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description Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2020 FrancePublisher:Springer Science and Business Media LLC Funded by:ANR | PRATOANR| PRATOGo Iwahana; Akihiko Ito; Tokuta Yokohata; Hiroshi Ohno; Kazuyuki Saito; Tomohiro Hajima; Katsumasa Tanaka; Katsumasa Tanaka;AbstractThe Yedoma layer, a permafrost layer containing a massive amount of underground ice in the Arctic regions, is reported to be rapidly thawing. In this study, we develop the Permafrost Degradation and Greenhouse gasses Emission Model (PDGEM), which describes the thawing of the Arctic permafrost including the Yedoma layer due to climate change and the greenhouse gas (GHG) emissions. The PDGEM includes the processes by which high-concentration GHGs (CO2and CH4) contained in the pores of the Yedoma layer are released directly by dynamic degradation, as well as the processes by which GHGs are released by the decomposition of organic matter in the Yedoma layer and other permafrost. Our model simulations show that the total GHG emissions from permafrost degradation in the RCP8.5 scenario was estimated to be 31-63 PgC for CO2and 1261-2821 TgCH4for CH4(68thpercentile of the perturbed model simulations, corresponding to a global average surface air temperature change of 0.05–0.11 °C), and 14-28 PgC for CO2and 618-1341 TgCH4for CH4(0.03–0.07 °C) in the RCP2.6 scenario. GHG emissions resulting from the dynamic degradation of the Yedoma layer were estimated to be less than 1% of the total emissions from the permafrost in both scenarios, possibly because of the small area ratio of the Yedoma layer. An advantage of PDGEM is that geographical distributions of GHG emissions can be estimated by combining a state-of-the-art land surface model featuring detailed physical processes with a GHG release model using a simple scheme, enabling us to consider a broad range of uncertainty regarding model parameters. In regions with large GHG emissions due to permafrost thawing, it may be possible to help reduce GHG emissions by taking measures such as restraining land development.
Université de Versai... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2020Full-Text: https://hal.science/hal-02970884Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2020Full-Text: https://hal.science/hal-02970884Data sources: Bielefeld Academic Search Engine (BASE)Progress in Earth and Planetary ScienceArticle . 2020 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1186/s40645-020-00366-8&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 22 citations 22 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Université de Versai... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2020Full-Text: https://hal.science/hal-02970884Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2020Full-Text: https://hal.science/hal-02970884Data sources: Bielefeld Academic Search Engine (BASE)Progress in Earth and Planetary ScienceArticle . 2020 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1186/s40645-020-00366-8&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2013Publisher:Elsevier BV Rikie Suzuki; Konosuke Sugiura; Konosuke Sugiura; Shin Nagai; Hideki Kobayashi; Yongwon Kim; Taro Nakai; Robert Busey; Akihiko Ito; Akihiko Ito; Hotaek Park;AbstractHere, the year 2011 characteristics of evapotranspiration and the energy budget of a black spruce forest underlain by permafrost in interior Alaska were explored. Energy balance was nearly closed during summer, and the mean value of the daily energy balance ratio (the ratio of turbulent energy fluxes to available energy) from June to August was 1.00, though a large energy balance deficit was observed in the spring. Such a deficit was explained partly by the energy consumed by snowmelt. Ground heat flux played an important role in the energy balance, explaining 26.5% of net radiation during summer. The mean daily evapotranspiration of this forest during summer was 1.37 mm day−1 – considered typical for boreal forests. The annual evapotranspiration and sublimation yielded 207.3 mm year−1, a value much smaller than the annual precipitation. Sublimation accounted for 8.8% (18.2 mm year−1) of the annual evapotranspiration and sublimation; thus, the sublimation is not negligible in the annual water balance in boreal forests. The daytime average decoupling coefficient was very small, and the mean value was 0.05 during summer. Thus, evapotranspiration from this forest was mostly explained by the component from the dryness of the air, resulting from the aerodynamically rough surface of this forest.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.polar.2013.03.003&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routeshybrid 63 citations 63 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.polar.2013.03.003&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2018Publisher:IOP Publishing Yutao Wang; Atul K. Jain; Shih-Chieh Kao; Joshua B. Fisher; Yuanyuan Fang; Akihiko Ito; Peter E. Thornton; Daniel J. Hayes; Shilong Piao; Shilong Piao; Shilong Piao; Whitney L. Forbes; Whitney L. Forbes; Xiaoying Shi; Mingzhou Jin; Forrest M. Hoffman; Ben Poulter; Hanqin Tian; Aurélien Ribes; Daniel M. Riccuito; Wenting Fu; Christopher R. Schwalm; Christopher R. Schwalm; Jiafu Mao; Tianbao Zhao;Abstract Runoff in the United States is changing, and this study finds that the measured change is dependent on the geographic region and varies seasonally. Specifically, observed annual total runoff had an insignificant increasing trend in the US between 1950 and 2010, but this insignificance was due to regional heterogeneity with both significant and insignificant increases in the eastern, northern, and southern US, and a greater significant decrease in the western US. Trends for seasonal mean runoff also differed across regions. By region, the season with the largest observed trend was autumn for the east (positive), spring for the north (positive), winter for the south (positive), winter for the west (negative), and autumn for the US as a whole (positive). Based on the detection and attribution analysis using gridded WaterWatch runoff observations along with semi-factorial land surface model simulations from the Multi-scale Synthesis and Terrestrial Model Intercomparison Project (MsTMIP), we found that while the roles of CO2 concentration, nitrogen deposition, and land use and land cover were inconsistent regionally and seasonally, the effect of climatic variations was detected for all regions and seasons, and the change in runoff could be attributed to climate change in summer and autumn in the south and in autumn in the west. We also found that the climate-only and historical transient simulations consistently underestimated the runoff trends, possibly due to precipitation bias in the MsTMIP driver or within the models themselves.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1748-9326/aabb41&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 9 citations 9 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1748-9326/aabb41&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2021 AustriaPublisher:American Geophysical Union (AGU) Shinichiro Fujimori; Shinichiro Fujimori; Shinichiro Fujimori; Fang Li; Kiyoshi Takahashi; Akihiko Ito; Tomoko Hasegawa; Tomoko Hasegawa; Tomoko Hasegawa; Jun’ya Takakura; D. K. Lee; C. Y. Park;doi: 10.1029/2020ef001786
AbstractGlobally, many parts of fire emissions are driven by deforestation. However, few studies have attempted to evaluate deforestation and vegetation degradation fires (DDF) and predict how they will change in the future. In this study, we expanded a fire model used in the Community Land Model to reflect the diverse causes of DDF. This enabled us to differentiate DDFs by cause (climate change, wood harvesting, and cropland, pastureland, and urban land‐use changes) and seasonality. We then predicted the state of fire regimes in the 2050s and 2090s under RCP 2.6 and RCP 6.0 scenarios. Our results indicate that the area affected by global total fires will decrease from the current 452 to 211–378 Mha yr−1 in the 2090s under RCP 6.0 and to 184–333 Mha yr−1 under RCP 2.6, mainly due to socioeconomic factors such as population and economic growth. We also predict that DDF will decrease from the current 73 million hectares per year (Mha yr−1) to 54–66 Mha yr−1 in the 2090s under RCP 6.0 and 46–55 Mha yr−1 under RCP 2.6. The main contributor to these decreases in DDF burned area was climate change, especially the increasing of precipitation. The impact of future land use change on future DDF was similar or slightly lower than present‐day. South America, Indonesia, and Australia were identified as high‐risk regions for future DDF, mainly due to the expansion of wood harvest and pastureland. Appropriate land and fire management policies will be needed to reduce future fire damage in these areas.
IIASA DARE arrow_drop_down add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1029/2020ef001786&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 10 citations 10 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert IIASA DARE arrow_drop_down add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1029/2020ef001786&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2017 United States, France, France, France, FrancePublisher:Springer Science and Business Media LLC Fabienne Maignan; Kevin Schaefer; Joshua B. Fisher; Anthony W. King; Deborah N. Huntzinger; Ning Zeng; Xiaoying Shi; Yuanyuan Fang; Atul K. Jain; Christopher R. Schwalm; Christopher R. Schwalm; Robert B. Cook; Jiafu Mao; Benjamin Poulter; P. Ciais; Daniel M. Ricciuto; Nicholas C. Parazoo; Huimin Lei; Anna M. Michalak; Weile Wang; Maoyi Huang; Akihiko Ito; Shushi Peng; Chaoqun Lu; Fang Zhao; Yaxing Wei; Hanqin Tian; Daniel J. Hayes;AbstractTerrestrial ecosystems play a vital role in regulating the accumulation of carbon (C) in the atmosphere. Understanding the factors controlling land C uptake is critical for reducing uncertainties in projections of future climate. The relative importance of changing climate, rising atmospheric CO2, and other factors, however, remains unclear despite decades of research. Here, we use an ensemble of land models to show that models disagree on the primary driver of cumulative C uptake for 85% of vegetated land area. Disagreement is largest in model sensitivity to rising atmospheric CO2 which shows almost twice the variability in cumulative land uptake since 1901 (1 s.d. of 212.8 PgC vs. 138.5 PgC, respectively). We find that variability in CO2 and temperature sensitivity is attributable, in part, to their compensatory effects on C uptake, whereby comparable estimates of C uptake can arise by invoking different sensitivities to key environmental conditions. Conversely, divergent estimates of C uptake can occur despite being based on the same environmental sensitivities. Together, these findings imply an important limitation to the predictability of C cycling and climate under unprecedented environmental conditions. We suggest that the carbon modeling community prioritize a probabilistic multi-model approach to generate more robust C cycle projections.
Hyper Article en Lig... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2017Full-Text: https://hal.science/hal-01584147Data sources: Bielefeld Academic Search Engine (BASE)University of California: eScholarshipArticle . 2017License: CC BYFull-Text: https://escholarship.org/uc/item/2z35q7ccData sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2017Full-Text: https://hal.science/hal-01584147Data sources: Bielefeld Academic Search Engine (BASE)INRIA a CCSD electronic archive serverArticle . 2017Data sources: INRIA a CCSD electronic archive servereScholarship - University of CaliforniaArticle . 2017Data sources: eScholarship - University of CaliforniaDigital Repository @ Iowa State UniversityArticle . 2017Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/s41598-017-03818-2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 178 citations 178 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2017Full-Text: https://hal.science/hal-01584147Data sources: Bielefeld Academic Search Engine (BASE)University of California: eScholarshipArticle . 2017License: CC BYFull-Text: https://escholarship.org/uc/item/2z35q7ccData sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2017Full-Text: https://hal.science/hal-01584147Data sources: Bielefeld Academic Search Engine (BASE)INRIA a CCSD electronic archive serverArticle . 2017Data sources: INRIA a CCSD electronic archive servereScholarship - University of CaliforniaArticle . 2017Data sources: eScholarship - University of CaliforniaDigital Repository @ Iowa State UniversityArticle . 2017Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/s41598-017-03818-2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2010Publisher:Springer Science and Business Media LLC Authors: Akihiko Ito; Akihiko Ito;pmid: 20169411
Using a process-based model, I assessed how ecophysiological processes would respond to near-future global changes predicted by coupled atmosphere-ocean climate models. An ecosystem model, Vegetation Integrative SImulator for Trace gases (VISIT), was applied to four sites in East Asia (different types of forest in Takayama, Tomakomai, and Fujiyoshida, Japan, and an Alpine grassland in Qinghai, China) where observational flux data are available for model calibration. The climate models predicted +1-3 degrees C warming and slight change in annual precipitation by 2050 as a result of an increase in atmospheric CO2. Gross primary production (GPP) was estimated to increase substantially at each site because of improved efficiency in the use of water and radiation. Although increased respiration partly offset the GPP increase, the simulation showed that these ecosystems would act as net carbon sinks independent of disturbance-induced uptake for recovery. However, the carbon budget response relied strongly on nitrogen availability, such that photosynthetic down-regulation resulting from leaf nitrogen dilution largely decreased GPP. In relation to long-term monitoring, these results indicate that the impacts of global warming may be more evident in gross fluxes (e.g., photosynthesis and respiration) than in the net CO2 budget, because changes in these fluxes offset each other.
Journal of Plant Res... arrow_drop_down Journal of Plant ResearchArticle . 2010 . Peer-reviewedLicense: Springer TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s10265-009-0305-x&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu91 citations 91 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Journal of Plant Res... arrow_drop_down Journal of Plant ResearchArticle . 2010 . Peer-reviewedLicense: Springer TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s10265-009-0305-x&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2015 FrancePublisher:IOP Publishing Funded by:NSF | Sustained-Petascale In Ac..., NSF | Leadership Class Scientif..., NSERCNSF| Sustained-Petascale In Action: Blue Waters Enabling Transformative Science And Engineering ,NSF| Leadership Class Scientific and Engineering Computing: Breaking Through the Limits ,NSERCJiafu Mao; Wenting Fu; Xiaoying Shi; D. M. Ricciuto; Joshua B. Fisher; Robert E. Dickinson; Yaxing Wei; W. Shem; Shilong Piao; Kaicun Wang; Christopher R. Schwalm; Hanqin Tian; M. Mu; M. Altaf Arain; Philippe Ciais; R.B. Cook; Yongjiu Dai; D. J. Hayes; Forrest M. Hoffman; Maoyi Huang; Shengfu Huang; D. N. Huntzinger; Akihiko Ito; Atul K. Jain; A. W. King; Huimin Lei; Chaoqun Lü; A. M. Michalak; Nicholas C. Parazoo; Changhui Peng; Shushi Peng; Benjamin Poulter; Kevin Schaefer; Elchin Jafarov; P. E. Thornton; Weile Wang; Ning Zeng; Zhenzhong Zeng; Fang Zhao; Qiuan Zhu; Zaichun Zhu;Nous avons examiné les contrôles naturels et anthropiques sur les changements de l'évapotranspiration terrestre (ET) de 1982 à 2010 en utilisant de multiples estimations à partir d'ensembles de données de télédétection et de modèles de surface terrestre orientés processus. Une tendance à la hausse significative de l'ET dans chaque hémisphère a été constamment révélée par des données contraintes par l'observation et des ensembles multimodèles qui considéraient les facteurs naturels et anthropiques historiques. Les impacts climatiques ont été simulés pour déterminer les variations spatio-temporelles de l'ET. À l'échelle mondiale, l'augmentation du CO2 s'est classée au deuxième rang de ces modèles après les influences climatiques prédominantes et a entraîné une diminution des tendances en matière de transpiration de la canopée et d'ET, en particulier pour les forêts tropicales et les terres arbustives de haute latitude. L'augmentation des dépôts d'azote a légèrement amplifié l'ET global via une croissance accrue des plantes. Les réponses ET induites par l'utilisation des terres, bien qu'avec des incertitudes substantielles dans l'analyse factorielle, étaient mineures à l'échelle mondiale, mais prononcées localement, en particulier dans les régions avec des changements intensifs de la couverture terrestre. Notre étude souligne l'importance d'utiliser des estimations multi-flux d'ET et de composantes d'ET pour quantifier l'empreinte anthropique de renforcement dans le cycle hydrologique mondial. Examinamos los controles naturales y antropogénicos sobre los cambios de evapotranspiración terrestre (ET) de 1982 a 2010 utilizando múltiples estimaciones de conjuntos de datos basados en teledetección y modelos de superficie terrestre orientados a procesos. Una tendencia creciente significativa de ET en cada hemisferio fue revelada consistentemente por datos restringidos observacionalmente y conjuntos multimodelo que consideraron impulsores históricos naturales y antropogénicos. Los impactos climáticos se simularon para determinar las variaciones espaciotemporales en ET. A nivel mundial, el aumento de CO2 ocupó el segundo lugar en estos modelos después de las influencias climáticas predominantes, y produjo tendencias decrecientes en la transpiración del dosel y ET, especialmente para los bosques tropicales y las tierras de arbustos de alta latitud. El aumento de la deposición de nitrógeno amplificó ligeramente la ET global a través del crecimiento mejorado de las plantas. Las respuestas ET inducidas por el uso de la tierra, aunque con incertidumbres sustanciales en todo el análisis factorial, fueron menores a nivel mundial, pero pronunciadas a nivel local, particularmente en regiones con cambios intensivos en la cobertura terrestre. Nuestro estudio destaca la importancia de emplear estimaciones de múltiples corrientes ET y componentes ET para cuantificar el fortalecimiento de la huella dactilar antropogénica en el ciclo hidrológico global. قمنا بفحص الضوابط الطبيعية والبشرية على تغيرات التبخر والنتح الأرضي (ET) من عام 1982 إلى عام 2010 باستخدام تقديرات متعددة من مجموعات البيانات القائمة على الاستشعار عن بعد ونماذج سطح الأرض الموجهة نحو العمليات. تم الكشف باستمرار عن اتجاه متزايد كبير للكائنات الفضائية في كل نصف كرة من خلال البيانات المقيدة بالملاحظة والمجموعات متعددة النماذج التي تعتبر محركات طبيعية وبشرية المنشأ تاريخية. تمت محاكاة التأثيرات المناخية لتحديد الاختلافات المكانية والزمانية في المخلوقات الفضائية. على الصعيد العالمي، احتل ارتفاع ثاني أكسيد الكربون المرتبة الثانية في هذه النماذج بعد التأثيرات المناخية السائدة، وأسفر عن اتجاهات متناقصة في نتح المظلة والمخلوقات الفضائية، خاصة بالنسبة للغابات الاستوائية وأراضي الشجيرات على خطوط العرض العالية. أدت زيادة ترسب النيتروجين إلى تضخيم المخلوقات الفضائية العالمية قليلاً عن طريق تعزيز نمو النبات. كانت استجابات المخلوقات الفضائية الناجمة عن استخدام الأراضي، وإن كان ذلك مع وجود أوجه عدم يقين كبيرة عبر تحليل العوامل، طفيفة على مستوى العالم، ولكنها كانت واضحة محليًا، لا سيما في المناطق التي تشهد تغيرات مكثفة في الغطاء الأرضي. تسلط دراستنا الضوء على أهمية استخدام تقديرات المخلوقات الفضائية ومكوناتها متعددة الدفق لقياس البصمة البشرية القوية في الدورة الهيدرولوجية العالمية. We examined natural and anthropogenic controls on terrestrial evapotranspiration (ET) changes from 1982 to 2010 using multiple estimates from remote sensing-based datasets and process-oriented land surface models. A significant increasing trend of ET in each hemisphere was consistently revealed by observationally-constrained data and multi-model ensembles that considered historic natural and anthropogenic drivers. The climate impacts were simulated to determine the spatiotemporal variations in ET. Globally, rising CO2 ranked second in these models after the predominant climatic influences, and yielded decreasing trends in canopy transpiration and ET, especially for tropical forests and high-latitude shrub land. Increasing nitrogen deposition slightly amplified global ET via enhanced plant growth. Land-use-induced ET responses, albeit with substantial uncertainties across the factorial analysis, were minor globally, but pronounced locally, particularly over regions with intensive land-cover changes. Our study highlights the importance of employing multi-stream ET and ET-component estimates to quantify the strengthening anthropogenic fingerprint in the global hydrologic cycle.
Hyper Article en Lig... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2015Full-Text: https://hal.science/hal-01805225Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2015Full-Text: https://hal.science/hal-01805225Data sources: Bielefeld Academic Search Engine (BASE)Institut National de la Recherche Agronomique: ProdINRAArticle . 2015Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 135 citations 135 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2015Full-Text: https://hal.science/hal-01805225Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2015Full-Text: https://hal.science/hal-01805225Data sources: Bielefeld Academic Search Engine (BASE)Institut National de la Recherche Agronomique: ProdINRAArticle . 2015Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Conference object , Journal 2018 Germany, France, France, France, FrancePublisher:IOP Publishing Funded by:NSF | Collaborative Research: E..., NSF | CNH: Pluvials, Droughts, ..., EC | HELIXNSF| Collaborative Research: EaSM2--Wildfires and Regional Climate Variability - Mechanisms, Modeling, and Prediction ,NSF| CNH: Pluvials, Droughts, Energetics, and the Mongol Empire ,EC| HELIXJia Yang; Kazuya Nishina; Richard Betts; Richard Betts; Sibyll Schaphoff; Louis François; Alexandra-Jane Henrot; Jinfeng Chang; Christopher P. O. Reyer; Catherine Morfopoulos; Katja Frieler; Philippe Ciais; Jörg Steinkamp; Rashid Rafique; Fang Zhao; Thomas Hickler; Hanqin Tian; Sebastian Ostberg; Anselmo García Cantú; Akihiko Ito; Shufen Pan;This paper evaluates the ability of eight global vegetation models to reproduce recent trends and inter-annual variability of biomass in natural terrestrial ecosystems. For the purpose of this evaluation, the simulated trajectories of biomass are expressed in terms of the relative rate of change in biomass (RRB), defined as the deviation of the actual rate of biomass turnover from its equilibrium counterpart. Cumulative changes in RRB explain long-term changes in biomass pools. RRB simulated by the global vegetation models is compared with its observational equivalent, derived from vegetation optical depth reconstructions of above-ground biomass (AGB) over the period 1993–2010. According to the RRB analysis, the rate of global biomass growth described by the ensemble of simulations substantially exceeds the observation. The observed fluctuations of global RRB are significantly correlated with El Niño Southern Oscillation events (ENSO), but only some of the simulations reproduce this correlation. However, the ENSO sensitivity of RRB in the tropics is not significant in the observation, while it is in some of the simulations. This mismatch points to an important limitation of the observed AGB reconstruction to capture biomass variations in tropical forests. Important discrepancies in RRB were also identified at the regional scale, in the tropical forests of Amazonia and Central Africa, as well as in the boreal forests of north-western America, western and central Siberia. In each of these regions, the RRBs derived from the simulations were analyzed in connection with underlying differences in net primary productivity and biomass turnover rate ̶as a basis for exploring in how far differences in simulated changes in biomass are attributed to the response of the carbon uptake to CO _2 increments, as well as to the model representation of factors affecting the rates of mortality and turnover of foliage and roots. Overall, our findings stress the usefulness of using RRB to evaluate complex vegetation models and highlight the importance of conducting further evaluations of both the actual rate of biomass turnover and its equilibrium counterpart, with special focus on their background values and sources of variation. In turn, this task would require the availability of more accurate multi-year observational data of biomass and net primary productivity for natural ecosystems, as well as detailed and updated information on land-cover classification.
Hyper Article en Lig... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2018Full-Text: https://hal.science/hal-02903437Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2018Full-Text: https://hal.science/hal-02903437Data sources: Bielefeld Academic Search Engine (BASE)Fachrepositorium LebenswissenschaftenArticle . 2018License: CC BYData sources: Fachrepositorium Lebenswissenschaftenadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 3 citations 3 popularity Average influence Average impulse Average Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2018Full-Text: https://hal.science/hal-02903437Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2018Full-Text: https://hal.science/hal-02903437Data sources: Bielefeld Academic Search Engine (BASE)Fachrepositorium LebenswissenschaftenArticle . 2018License: CC BYData sources: Fachrepositorium Lebenswissenschaftenadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1748-9326/aac63c&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Conference object , Other literature type , Journal 2019Embargo end date: 16 Mar 2019 Netherlands, France, United Kingdom, Germany, Switzerland, France, France, France, France, Japan, France, Netherlands, Netherlands, Canada, Spain, France, AustriaPublisher:Springer Science and Business Media LLC Funded by:EC | IMPACT2C, EC | HELIXEC| IMPACT2C ,EC| HELIXJeroen Steenbeek; Erwin Schmid; Tyler D. Eddy; Tyler D. Eddy; Tyler D. Eddy; Derek P. Tittensor; Derek P. Tittensor; Rene Orth; Rene Orth; Yadu Pokhrel; Joshua Elliott; Yusuke Satoh; Yusuke Satoh; Christian Folberth; Louis François; Andrew D. Friend; Catherine Morfopoulos; Nikolay Khabarov; Peter Lawrence; Naota Hanasaki; Michelle T. H. van Vliet; Akihiko Ito; Sonia I. Seneviratne; Veronika Huber; Thomas A. M. Pugh; Jinfeng Chang; Tobias Stacke; Philippe Ciais; Lila Warszawski; Jan Volkholz; Matthias Büchner; Yoshihide Wada; Christopher P. O. Reyer; Xuhui Wang; Xuhui Wang; Xuhui Wang; Dieter Gerten; Dieter Gerten; Sebastian Ostberg; Qiuhong Tang; Gen Sakurai; David A. Carozza; David A. Carozza; Christoph Müller; Jacob Schewe; Lutz Breuer; Delphine Deryng; Heike K. Lotze; Hannes Müller Schmied; Robert Vautard; Hyungjun Kim; Fang Zhao; Allard de Wit; Jörg Steinkamp; Katja Frieler; Simon N. Gosling; Lukas Gudmundsson; Marta Coll; Hanqin Tian;doi: 10.1038/s41467-019-08745-6 , 10.17863/cam.37807 , 10.60692/8dj48-81382 , 10.3929/ethz-b-000330244 , 10.60692/8mcvk-e7225
pmid: 30824763
pmc: PMC6397256
handle: 10261/181642
doi: 10.1038/s41467-019-08745-6 , 10.17863/cam.37807 , 10.60692/8dj48-81382 , 10.3929/ethz-b-000330244 , 10.60692/8mcvk-e7225
pmid: 30824763
pmc: PMC6397256
handle: 10261/181642
AbstractGlobal impact models represent process-level understanding of how natural and human systems may be affected by climate change. Their projections are used in integrated assessments of climate change. Here we test, for the first time, systematically across many important systems, how well such impact models capture the impacts of extreme climate conditions. Using the 2003 European heat wave and drought as a historical analogue for comparable events in the future, we find that a majority of models underestimate the extremeness of impacts in important sectors such as agriculture, terrestrial ecosystems, and heat-related human mortality, while impacts on water resources and hydropower are overestimated in some river basins; and the spread across models is often large. This has important implications for economic assessments of climate change impacts that rely on these models. It also means that societal risks from future extreme events may be greater than previously thought.
IIASA PURE arrow_drop_down Université Jean Monnet – Saint-Etienne: HALArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)École Polytechnique, Université Paris-Saclay: HALArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)Publication Database PIK (Potsdam Institute for Climate Impact Research)Article . 2019License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)Memorial University of Newfoundland: Research RepositoryArticle . 2019License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)Recolector de Ciencia Abierta, RECOLECTAArticle . 2019 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAWageningen Staff PublicationsArticle . 2019License: CC BYData sources: Wageningen Staff PublicationsHochschulschriftenserver - Universität Frankfurt am MainArticle . 2019Data sources: Hochschulschriftenserver - Universität Frankfurt am MainPublication Server of Goethe University Frankfurt am MainArticle . 2019License: CC BYData sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/s41467-019-08745-6&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 202 citations 202 popularity Top 0.1% influence Top 10% impulse Top 0.1% Powered by BIP!
more_vert IIASA PURE arrow_drop_down Université Jean Monnet – Saint-Etienne: HALArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)École Polytechnique, Université Paris-Saclay: HALArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)Publication Database PIK (Potsdam Institute for Climate Impact Research)Article . 2019License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)Memorial University of Newfoundland: Research RepositoryArticle . 2019License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)Recolector de Ciencia Abierta, RECOLECTAArticle . 2019 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAWageningen Staff PublicationsArticle . 2019License: CC BYData sources: Wageningen Staff PublicationsHochschulschriftenserver - Universität Frankfurt am MainArticle . 2019Data sources: Hochschulschriftenserver - Universität Frankfurt am MainPublication Server of Goethe University Frankfurt am MainArticle . 2019License: CC BYData sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/s41467-019-08745-6&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2018Embargo end date: 01 Jan 2019 United Kingdom, United Kingdom, Netherlands, United Kingdom, Finland, SwitzerlandPublisher:Springer Science and Business Media LLC Funded by:EC | IMPRESSIONS, AKA | Pathways linking uncertai...EC| IMPRESSIONS ,AKA| Pathways linking uncertainties in model projections of climate and its effects / Consortium: PLUMESFlorian Wimmer; Kiyoshi Takahashi; Martina Flörke; Eric Audsley; Rik Leemans; Akihiko Ito; Minoru Yoshikawa; Stefan Fronzek; Sarahi Nunez; Rebecca S. Snell; Rebecca S. Snell; Daniel L. Sandars; Valentine Lafond; Timothy R. Carter; Akemi Tanaka; Harald Bugmann; Nina Pirttioja; Marc Mokrech; Victoria Janes-Bassett; Victoria Janes-Bassett; Rob Alkemade; Rob Alkemade; Yasushi Honda; Ian P. Holman;handle: 10138/340715
Responses to future changes in climatic and socio-economic conditions can be expected to vary between sectors and regions, reflecting differential sensitivity to these highly uncertain factors. A sensitivity analysis was conducted using a suite of impact models (for health, agriculture, biodiversity, land use, floods and forestry) across Europe with respect to changes in key climate and socio-economic variables. Depending on the indicators, aggregated grid or indicative site results are reported for eight rectangular sub-regions that together span Europe from northern Finland to southern Spain and from western Ireland to the Baltic States and eastern Mediterranean, each plotted as scenario-neutral impact response surfaces (IRSs). These depict the modelled behaviour of an impact variable in response to changes in two key explanatory variables. To our knowledge, this is the first time the IRS approach has been applied to changes in socio-economic drivers and over such large regions. The British Isles region showed the smallest sensitivity to both temperature and precipitation, whereas Central Europe showed the strongest responses to temperature and Eastern Europe to precipitation. Across the regions, sensitivity to temperature was lowest for the two indicators of river discharge and highest for Norway spruce productivity. Sensitivity to precipitation was lowest for intensive agricultural land use, maize and potato yields and Scots pine productivity, and highest for Norway spruce productivity. Under future climate projections, North-eastern Europe showed increases in yields of all crops and productivity of all tree species, whereas Central and East Europe showed declines. River discharge indicators and forest productivity (except Holm oak) were projected to decline over southern European regions. Responses were more sensitive to socio-economic than to climate drivers for some impact indicators, as demonstrated for heat-related mortality, coastal flooding and land use. Regional Environmental Change, 19 (3) ISSN:1436-3798 ISSN:1436-378X
Cranfield University... arrow_drop_down Cranfield University: Collection of E-Research - CERESArticle . 2018License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Regional Environmental ChangeArticle . 2019Data sources: DANS (Data Archiving and Networked Services)HELDA - Digital Repository of the University of HelsinkiArticle . 2022Data sources: HELDA - Digital Repository of the University of HelsinkiWageningen Staff PublicationsArticle . 2019License: CC BYData sources: Wageningen Staff Publicationshttp://dx.doi.org/10.1007/s101...Other literature typeData sources: European Union Open Data PortalLancaster University: Lancaster EprintsArticle . 2019Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s10113-018-1421-8&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 23 citations 23 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Cranfield University... arrow_drop_down Cranfield University: Collection of E-Research - CERESArticle . 2018License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Regional Environmental ChangeArticle . 2019Data sources: DANS (Data Archiving and Networked Services)HELDA - Digital Repository of the University of HelsinkiArticle . 2022Data sources: HELDA - Digital Repository of the University of HelsinkiWageningen Staff PublicationsArticle . 2019License: CC BYData sources: Wageningen Staff Publicationshttp://dx.doi.org/10.1007/s101...Other literature typeData sources: European Union Open Data PortalLancaster University: Lancaster EprintsArticle . 2019Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s10113-018-1421-8&type=result"></script>'); --> </script>
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description Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2020 FrancePublisher:Springer Science and Business Media LLC Funded by:ANR | PRATOANR| PRATOGo Iwahana; Akihiko Ito; Tokuta Yokohata; Hiroshi Ohno; Kazuyuki Saito; Tomohiro Hajima; Katsumasa Tanaka; Katsumasa Tanaka;AbstractThe Yedoma layer, a permafrost layer containing a massive amount of underground ice in the Arctic regions, is reported to be rapidly thawing. In this study, we develop the Permafrost Degradation and Greenhouse gasses Emission Model (PDGEM), which describes the thawing of the Arctic permafrost including the Yedoma layer due to climate change and the greenhouse gas (GHG) emissions. The PDGEM includes the processes by which high-concentration GHGs (CO2and CH4) contained in the pores of the Yedoma layer are released directly by dynamic degradation, as well as the processes by which GHGs are released by the decomposition of organic matter in the Yedoma layer and other permafrost. Our model simulations show that the total GHG emissions from permafrost degradation in the RCP8.5 scenario was estimated to be 31-63 PgC for CO2and 1261-2821 TgCH4for CH4(68thpercentile of the perturbed model simulations, corresponding to a global average surface air temperature change of 0.05–0.11 °C), and 14-28 PgC for CO2and 618-1341 TgCH4for CH4(0.03–0.07 °C) in the RCP2.6 scenario. GHG emissions resulting from the dynamic degradation of the Yedoma layer were estimated to be less than 1% of the total emissions from the permafrost in both scenarios, possibly because of the small area ratio of the Yedoma layer. An advantage of PDGEM is that geographical distributions of GHG emissions can be estimated by combining a state-of-the-art land surface model featuring detailed physical processes with a GHG release model using a simple scheme, enabling us to consider a broad range of uncertainty regarding model parameters. In regions with large GHG emissions due to permafrost thawing, it may be possible to help reduce GHG emissions by taking measures such as restraining land development.
Université de Versai... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2020Full-Text: https://hal.science/hal-02970884Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2020Full-Text: https://hal.science/hal-02970884Data sources: Bielefeld Academic Search Engine (BASE)Progress in Earth and Planetary ScienceArticle . 2020 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1186/s40645-020-00366-8&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 22 citations 22 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Université de Versai... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2020Full-Text: https://hal.science/hal-02970884Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2020Full-Text: https://hal.science/hal-02970884Data sources: Bielefeld Academic Search Engine (BASE)Progress in Earth and Planetary ScienceArticle . 2020 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1186/s40645-020-00366-8&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2013Publisher:Elsevier BV Rikie Suzuki; Konosuke Sugiura; Konosuke Sugiura; Shin Nagai; Hideki Kobayashi; Yongwon Kim; Taro Nakai; Robert Busey; Akihiko Ito; Akihiko Ito; Hotaek Park;AbstractHere, the year 2011 characteristics of evapotranspiration and the energy budget of a black spruce forest underlain by permafrost in interior Alaska were explored. Energy balance was nearly closed during summer, and the mean value of the daily energy balance ratio (the ratio of turbulent energy fluxes to available energy) from June to August was 1.00, though a large energy balance deficit was observed in the spring. Such a deficit was explained partly by the energy consumed by snowmelt. Ground heat flux played an important role in the energy balance, explaining 26.5% of net radiation during summer. The mean daily evapotranspiration of this forest during summer was 1.37 mm day−1 – considered typical for boreal forests. The annual evapotranspiration and sublimation yielded 207.3 mm year−1, a value much smaller than the annual precipitation. Sublimation accounted for 8.8% (18.2 mm year−1) of the annual evapotranspiration and sublimation; thus, the sublimation is not negligible in the annual water balance in boreal forests. The daytime average decoupling coefficient was very small, and the mean value was 0.05 during summer. Thus, evapotranspiration from this forest was mostly explained by the component from the dryness of the air, resulting from the aerodynamically rough surface of this forest.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.polar.2013.03.003&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routeshybrid 63 citations 63 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.polar.2013.03.003&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2018Publisher:IOP Publishing Yutao Wang; Atul K. Jain; Shih-Chieh Kao; Joshua B. Fisher; Yuanyuan Fang; Akihiko Ito; Peter E. Thornton; Daniel J. Hayes; Shilong Piao; Shilong Piao; Shilong Piao; Whitney L. Forbes; Whitney L. Forbes; Xiaoying Shi; Mingzhou Jin; Forrest M. Hoffman; Ben Poulter; Hanqin Tian; Aurélien Ribes; Daniel M. Riccuito; Wenting Fu; Christopher R. Schwalm; Christopher R. Schwalm; Jiafu Mao; Tianbao Zhao;Abstract Runoff in the United States is changing, and this study finds that the measured change is dependent on the geographic region and varies seasonally. Specifically, observed annual total runoff had an insignificant increasing trend in the US between 1950 and 2010, but this insignificance was due to regional heterogeneity with both significant and insignificant increases in the eastern, northern, and southern US, and a greater significant decrease in the western US. Trends for seasonal mean runoff also differed across regions. By region, the season with the largest observed trend was autumn for the east (positive), spring for the north (positive), winter for the south (positive), winter for the west (negative), and autumn for the US as a whole (positive). Based on the detection and attribution analysis using gridded WaterWatch runoff observations along with semi-factorial land surface model simulations from the Multi-scale Synthesis and Terrestrial Model Intercomparison Project (MsTMIP), we found that while the roles of CO2 concentration, nitrogen deposition, and land use and land cover were inconsistent regionally and seasonally, the effect of climatic variations was detected for all regions and seasons, and the change in runoff could be attributed to climate change in summer and autumn in the south and in autumn in the west. We also found that the climate-only and historical transient simulations consistently underestimated the runoff trends, possibly due to precipitation bias in the MsTMIP driver or within the models themselves.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1748-9326/aabb41&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 9 citations 9 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1748-9326/aabb41&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2021 AustriaPublisher:American Geophysical Union (AGU) Shinichiro Fujimori; Shinichiro Fujimori; Shinichiro Fujimori; Fang Li; Kiyoshi Takahashi; Akihiko Ito; Tomoko Hasegawa; Tomoko Hasegawa; Tomoko Hasegawa; Jun’ya Takakura; D. K. Lee; C. Y. Park;doi: 10.1029/2020ef001786
AbstractGlobally, many parts of fire emissions are driven by deforestation. However, few studies have attempted to evaluate deforestation and vegetation degradation fires (DDF) and predict how they will change in the future. In this study, we expanded a fire model used in the Community Land Model to reflect the diverse causes of DDF. This enabled us to differentiate DDFs by cause (climate change, wood harvesting, and cropland, pastureland, and urban land‐use changes) and seasonality. We then predicted the state of fire regimes in the 2050s and 2090s under RCP 2.6 and RCP 6.0 scenarios. Our results indicate that the area affected by global total fires will decrease from the current 452 to 211–378 Mha yr−1 in the 2090s under RCP 6.0 and to 184–333 Mha yr−1 under RCP 2.6, mainly due to socioeconomic factors such as population and economic growth. We also predict that DDF will decrease from the current 73 million hectares per year (Mha yr−1) to 54–66 Mha yr−1 in the 2090s under RCP 6.0 and 46–55 Mha yr−1 under RCP 2.6. The main contributor to these decreases in DDF burned area was climate change, especially the increasing of precipitation. The impact of future land use change on future DDF was similar or slightly lower than present‐day. South America, Indonesia, and Australia were identified as high‐risk regions for future DDF, mainly due to the expansion of wood harvest and pastureland. Appropriate land and fire management policies will be needed to reduce future fire damage in these areas.
IIASA DARE arrow_drop_down add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1029/2020ef001786&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 10 citations 10 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert IIASA DARE arrow_drop_down add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1029/2020ef001786&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2017 United States, France, France, France, FrancePublisher:Springer Science and Business Media LLC Fabienne Maignan; Kevin Schaefer; Joshua B. Fisher; Anthony W. King; Deborah N. Huntzinger; Ning Zeng; Xiaoying Shi; Yuanyuan Fang; Atul K. Jain; Christopher R. Schwalm; Christopher R. Schwalm; Robert B. Cook; Jiafu Mao; Benjamin Poulter; P. Ciais; Daniel M. Ricciuto; Nicholas C. Parazoo; Huimin Lei; Anna M. Michalak; Weile Wang; Maoyi Huang; Akihiko Ito; Shushi Peng; Chaoqun Lu; Fang Zhao; Yaxing Wei; Hanqin Tian; Daniel J. Hayes;AbstractTerrestrial ecosystems play a vital role in regulating the accumulation of carbon (C) in the atmosphere. Understanding the factors controlling land C uptake is critical for reducing uncertainties in projections of future climate. The relative importance of changing climate, rising atmospheric CO2, and other factors, however, remains unclear despite decades of research. Here, we use an ensemble of land models to show that models disagree on the primary driver of cumulative C uptake for 85% of vegetated land area. Disagreement is largest in model sensitivity to rising atmospheric CO2 which shows almost twice the variability in cumulative land uptake since 1901 (1 s.d. of 212.8 PgC vs. 138.5 PgC, respectively). We find that variability in CO2 and temperature sensitivity is attributable, in part, to their compensatory effects on C uptake, whereby comparable estimates of C uptake can arise by invoking different sensitivities to key environmental conditions. Conversely, divergent estimates of C uptake can occur despite being based on the same environmental sensitivities. Together, these findings imply an important limitation to the predictability of C cycling and climate under unprecedented environmental conditions. We suggest that the carbon modeling community prioritize a probabilistic multi-model approach to generate more robust C cycle projections.
Hyper Article en Lig... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2017Full-Text: https://hal.science/hal-01584147Data sources: Bielefeld Academic Search Engine (BASE)University of California: eScholarshipArticle . 2017License: CC BYFull-Text: https://escholarship.org/uc/item/2z35q7ccData sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2017Full-Text: https://hal.science/hal-01584147Data sources: Bielefeld Academic Search Engine (BASE)INRIA a CCSD electronic archive serverArticle . 2017Data sources: INRIA a CCSD electronic archive servereScholarship - University of CaliforniaArticle . 2017Data sources: eScholarship - University of CaliforniaDigital Repository @ Iowa State UniversityArticle . 2017Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/s41598-017-03818-2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 178 citations 178 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2017Full-Text: https://hal.science/hal-01584147Data sources: Bielefeld Academic Search Engine (BASE)University of California: eScholarshipArticle . 2017License: CC BYFull-Text: https://escholarship.org/uc/item/2z35q7ccData sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2017Full-Text: https://hal.science/hal-01584147Data sources: Bielefeld Academic Search Engine (BASE)INRIA a CCSD electronic archive serverArticle . 2017Data sources: INRIA a CCSD electronic archive servereScholarship - University of CaliforniaArticle . 2017Data sources: eScholarship - University of CaliforniaDigital Repository @ Iowa State UniversityArticle . 2017Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/s41598-017-03818-2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2010Publisher:Springer Science and Business Media LLC Authors: Akihiko Ito; Akihiko Ito;pmid: 20169411
Using a process-based model, I assessed how ecophysiological processes would respond to near-future global changes predicted by coupled atmosphere-ocean climate models. An ecosystem model, Vegetation Integrative SImulator for Trace gases (VISIT), was applied to four sites in East Asia (different types of forest in Takayama, Tomakomai, and Fujiyoshida, Japan, and an Alpine grassland in Qinghai, China) where observational flux data are available for model calibration. The climate models predicted +1-3 degrees C warming and slight change in annual precipitation by 2050 as a result of an increase in atmospheric CO2. Gross primary production (GPP) was estimated to increase substantially at each site because of improved efficiency in the use of water and radiation. Although increased respiration partly offset the GPP increase, the simulation showed that these ecosystems would act as net carbon sinks independent of disturbance-induced uptake for recovery. However, the carbon budget response relied strongly on nitrogen availability, such that photosynthetic down-regulation resulting from leaf nitrogen dilution largely decreased GPP. In relation to long-term monitoring, these results indicate that the impacts of global warming may be more evident in gross fluxes (e.g., photosynthesis and respiration) than in the net CO2 budget, because changes in these fluxes offset each other.
Journal of Plant Res... arrow_drop_down Journal of Plant ResearchArticle . 2010 . Peer-reviewedLicense: Springer TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s10265-009-0305-x&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu91 citations 91 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Journal of Plant Res... arrow_drop_down Journal of Plant ResearchArticle . 2010 . Peer-reviewedLicense: Springer TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s10265-009-0305-x&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2015 FrancePublisher:IOP Publishing Funded by:NSF | Sustained-Petascale In Ac..., NSF | Leadership Class Scientif..., NSERCNSF| Sustained-Petascale In Action: Blue Waters Enabling Transformative Science And Engineering ,NSF| Leadership Class Scientific and Engineering Computing: Breaking Through the Limits ,NSERCJiafu Mao; Wenting Fu; Xiaoying Shi; D. M. Ricciuto; Joshua B. Fisher; Robert E. Dickinson; Yaxing Wei; W. Shem; Shilong Piao; Kaicun Wang; Christopher R. Schwalm; Hanqin Tian; M. Mu; M. Altaf Arain; Philippe Ciais; R.B. Cook; Yongjiu Dai; D. J. Hayes; Forrest M. Hoffman; Maoyi Huang; Shengfu Huang; D. N. Huntzinger; Akihiko Ito; Atul K. Jain; A. W. King; Huimin Lei; Chaoqun Lü; A. M. Michalak; Nicholas C. Parazoo; Changhui Peng; Shushi Peng; Benjamin Poulter; Kevin Schaefer; Elchin Jafarov; P. E. Thornton; Weile Wang; Ning Zeng; Zhenzhong Zeng; Fang Zhao; Qiuan Zhu; Zaichun Zhu;Nous avons examiné les contrôles naturels et anthropiques sur les changements de l'évapotranspiration terrestre (ET) de 1982 à 2010 en utilisant de multiples estimations à partir d'ensembles de données de télédétection et de modèles de surface terrestre orientés processus. Une tendance à la hausse significative de l'ET dans chaque hémisphère a été constamment révélée par des données contraintes par l'observation et des ensembles multimodèles qui considéraient les facteurs naturels et anthropiques historiques. Les impacts climatiques ont été simulés pour déterminer les variations spatio-temporelles de l'ET. À l'échelle mondiale, l'augmentation du CO2 s'est classée au deuxième rang de ces modèles après les influences climatiques prédominantes et a entraîné une diminution des tendances en matière de transpiration de la canopée et d'ET, en particulier pour les forêts tropicales et les terres arbustives de haute latitude. L'augmentation des dépôts d'azote a légèrement amplifié l'ET global via une croissance accrue des plantes. Les réponses ET induites par l'utilisation des terres, bien qu'avec des incertitudes substantielles dans l'analyse factorielle, étaient mineures à l'échelle mondiale, mais prononcées localement, en particulier dans les régions avec des changements intensifs de la couverture terrestre. Notre étude souligne l'importance d'utiliser des estimations multi-flux d'ET et de composantes d'ET pour quantifier l'empreinte anthropique de renforcement dans le cycle hydrologique mondial. Examinamos los controles naturales y antropogénicos sobre los cambios de evapotranspiración terrestre (ET) de 1982 a 2010 utilizando múltiples estimaciones de conjuntos de datos basados en teledetección y modelos de superficie terrestre orientados a procesos. Una tendencia creciente significativa de ET en cada hemisferio fue revelada consistentemente por datos restringidos observacionalmente y conjuntos multimodelo que consideraron impulsores históricos naturales y antropogénicos. Los impactos climáticos se simularon para determinar las variaciones espaciotemporales en ET. A nivel mundial, el aumento de CO2 ocupó el segundo lugar en estos modelos después de las influencias climáticas predominantes, y produjo tendencias decrecientes en la transpiración del dosel y ET, especialmente para los bosques tropicales y las tierras de arbustos de alta latitud. El aumento de la deposición de nitrógeno amplificó ligeramente la ET global a través del crecimiento mejorado de las plantas. Las respuestas ET inducidas por el uso de la tierra, aunque con incertidumbres sustanciales en todo el análisis factorial, fueron menores a nivel mundial, pero pronunciadas a nivel local, particularmente en regiones con cambios intensivos en la cobertura terrestre. Nuestro estudio destaca la importancia de emplear estimaciones de múltiples corrientes ET y componentes ET para cuantificar el fortalecimiento de la huella dactilar antropogénica en el ciclo hidrológico global. قمنا بفحص الضوابط الطبيعية والبشرية على تغيرات التبخر والنتح الأرضي (ET) من عام 1982 إلى عام 2010 باستخدام تقديرات متعددة من مجموعات البيانات القائمة على الاستشعار عن بعد ونماذج سطح الأرض الموجهة نحو العمليات. تم الكشف باستمرار عن اتجاه متزايد كبير للكائنات الفضائية في كل نصف كرة من خلال البيانات المقيدة بالملاحظة والمجموعات متعددة النماذج التي تعتبر محركات طبيعية وبشرية المنشأ تاريخية. تمت محاكاة التأثيرات المناخية لتحديد الاختلافات المكانية والزمانية في المخلوقات الفضائية. على الصعيد العالمي، احتل ارتفاع ثاني أكسيد الكربون المرتبة الثانية في هذه النماذج بعد التأثيرات المناخية السائدة، وأسفر عن اتجاهات متناقصة في نتح المظلة والمخلوقات الفضائية، خاصة بالنسبة للغابات الاستوائية وأراضي الشجيرات على خطوط العرض العالية. أدت زيادة ترسب النيتروجين إلى تضخيم المخلوقات الفضائية العالمية قليلاً عن طريق تعزيز نمو النبات. كانت استجابات المخلوقات الفضائية الناجمة عن استخدام الأراضي، وإن كان ذلك مع وجود أوجه عدم يقين كبيرة عبر تحليل العوامل، طفيفة على مستوى العالم، ولكنها كانت واضحة محليًا، لا سيما في المناطق التي تشهد تغيرات مكثفة في الغطاء الأرضي. تسلط دراستنا الضوء على أهمية استخدام تقديرات المخلوقات الفضائية ومكوناتها متعددة الدفق لقياس البصمة البشرية القوية في الدورة الهيدرولوجية العالمية. We examined natural and anthropogenic controls on terrestrial evapotranspiration (ET) changes from 1982 to 2010 using multiple estimates from remote sensing-based datasets and process-oriented land surface models. A significant increasing trend of ET in each hemisphere was consistently revealed by observationally-constrained data and multi-model ensembles that considered historic natural and anthropogenic drivers. The climate impacts were simulated to determine the spatiotemporal variations in ET. Globally, rising CO2 ranked second in these models after the predominant climatic influences, and yielded decreasing trends in canopy transpiration and ET, especially for tropical forests and high-latitude shrub land. Increasing nitrogen deposition slightly amplified global ET via enhanced plant growth. Land-use-induced ET responses, albeit with substantial uncertainties across the factorial analysis, were minor globally, but pronounced locally, particularly over regions with intensive land-cover changes. Our study highlights the importance of employing multi-stream ET and ET-component estimates to quantify the strengthening anthropogenic fingerprint in the global hydrologic cycle.
Hyper Article en Lig... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2015Full-Text: https://hal.science/hal-01805225Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2015Full-Text: https://hal.science/hal-01805225Data sources: Bielefeld Academic Search Engine (BASE)Institut National de la Recherche Agronomique: ProdINRAArticle . 2015Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1748-9326/10/9/094008&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 135 citations 135 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2015Full-Text: https://hal.science/hal-01805225Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2015Full-Text: https://hal.science/hal-01805225Data sources: Bielefeld Academic Search Engine (BASE)Institut National de la Recherche Agronomique: ProdINRAArticle . 2015Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1748-9326/10/9/094008&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Conference object , Journal 2018 Germany, France, France, France, FrancePublisher:IOP Publishing Funded by:NSF | Collaborative Research: E..., NSF | CNH: Pluvials, Droughts, ..., EC | HELIXNSF| Collaborative Research: EaSM2--Wildfires and Regional Climate Variability - Mechanisms, Modeling, and Prediction ,NSF| CNH: Pluvials, Droughts, Energetics, and the Mongol Empire ,EC| HELIXJia Yang; Kazuya Nishina; Richard Betts; Richard Betts; Sibyll Schaphoff; Louis François; Alexandra-Jane Henrot; Jinfeng Chang; Christopher P. O. Reyer; Catherine Morfopoulos; Katja Frieler; Philippe Ciais; Jörg Steinkamp; Rashid Rafique; Fang Zhao; Thomas Hickler; Hanqin Tian; Sebastian Ostberg; Anselmo García Cantú; Akihiko Ito; Shufen Pan;This paper evaluates the ability of eight global vegetation models to reproduce recent trends and inter-annual variability of biomass in natural terrestrial ecosystems. For the purpose of this evaluation, the simulated trajectories of biomass are expressed in terms of the relative rate of change in biomass (RRB), defined as the deviation of the actual rate of biomass turnover from its equilibrium counterpart. Cumulative changes in RRB explain long-term changes in biomass pools. RRB simulated by the global vegetation models is compared with its observational equivalent, derived from vegetation optical depth reconstructions of above-ground biomass (AGB) over the period 1993–2010. According to the RRB analysis, the rate of global biomass growth described by the ensemble of simulations substantially exceeds the observation. The observed fluctuations of global RRB are significantly correlated with El Niño Southern Oscillation events (ENSO), but only some of the simulations reproduce this correlation. However, the ENSO sensitivity of RRB in the tropics is not significant in the observation, while it is in some of the simulations. This mismatch points to an important limitation of the observed AGB reconstruction to capture biomass variations in tropical forests. Important discrepancies in RRB were also identified at the regional scale, in the tropical forests of Amazonia and Central Africa, as well as in the boreal forests of north-western America, western and central Siberia. In each of these regions, the RRBs derived from the simulations were analyzed in connection with underlying differences in net primary productivity and biomass turnover rate ̶as a basis for exploring in how far differences in simulated changes in biomass are attributed to the response of the carbon uptake to CO _2 increments, as well as to the model representation of factors affecting the rates of mortality and turnover of foliage and roots. Overall, our findings stress the usefulness of using RRB to evaluate complex vegetation models and highlight the importance of conducting further evaluations of both the actual rate of biomass turnover and its equilibrium counterpart, with special focus on their background values and sources of variation. In turn, this task would require the availability of more accurate multi-year observational data of biomass and net primary productivity for natural ecosystems, as well as detailed and updated information on land-cover classification.
Hyper Article en Lig... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2018Full-Text: https://hal.science/hal-02903437Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2018Full-Text: https://hal.science/hal-02903437Data sources: Bielefeld Academic Search Engine (BASE)Fachrepositorium LebenswissenschaftenArticle . 2018License: CC BYData sources: Fachrepositorium Lebenswissenschaftenadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1748-9326/aac63c&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 3 citations 3 popularity Average influence Average impulse Average Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2018Full-Text: https://hal.science/hal-02903437Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2018Full-Text: https://hal.science/hal-02903437Data sources: Bielefeld Academic Search Engine (BASE)Fachrepositorium LebenswissenschaftenArticle . 2018License: CC BYData sources: Fachrepositorium Lebenswissenschaftenadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1748-9326/aac63c&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Conference object , Other literature type , Journal 2019Embargo end date: 16 Mar 2019 Netherlands, France, United Kingdom, Germany, Switzerland, France, France, France, France, Japan, France, Netherlands, Netherlands, Canada, Spain, France, AustriaPublisher:Springer Science and Business Media LLC Funded by:EC | IMPACT2C, EC | HELIXEC| IMPACT2C ,EC| HELIXJeroen Steenbeek; Erwin Schmid; Tyler D. Eddy; Tyler D. Eddy; Tyler D. Eddy; Derek P. Tittensor; Derek P. Tittensor; Rene Orth; Rene Orth; Yadu Pokhrel; Joshua Elliott; Yusuke Satoh; Yusuke Satoh; Christian Folberth; Louis François; Andrew D. Friend; Catherine Morfopoulos; Nikolay Khabarov; Peter Lawrence; Naota Hanasaki; Michelle T. H. van Vliet; Akihiko Ito; Sonia I. Seneviratne; Veronika Huber; Thomas A. M. Pugh; Jinfeng Chang; Tobias Stacke; Philippe Ciais; Lila Warszawski; Jan Volkholz; Matthias Büchner; Yoshihide Wada; Christopher P. O. Reyer; Xuhui Wang; Xuhui Wang; Xuhui Wang; Dieter Gerten; Dieter Gerten; Sebastian Ostberg; Qiuhong Tang; Gen Sakurai; David A. Carozza; David A. Carozza; Christoph Müller; Jacob Schewe; Lutz Breuer; Delphine Deryng; Heike K. Lotze; Hannes Müller Schmied; Robert Vautard; Hyungjun Kim; Fang Zhao; Allard de Wit; Jörg Steinkamp; Katja Frieler; Simon N. Gosling; Lukas Gudmundsson; Marta Coll; Hanqin Tian;doi: 10.1038/s41467-019-08745-6 , 10.17863/cam.37807 , 10.60692/8dj48-81382 , 10.3929/ethz-b-000330244 , 10.60692/8mcvk-e7225
pmid: 30824763
pmc: PMC6397256
handle: 10261/181642
doi: 10.1038/s41467-019-08745-6 , 10.17863/cam.37807 , 10.60692/8dj48-81382 , 10.3929/ethz-b-000330244 , 10.60692/8mcvk-e7225
pmid: 30824763
pmc: PMC6397256
handle: 10261/181642
AbstractGlobal impact models represent process-level understanding of how natural and human systems may be affected by climate change. Their projections are used in integrated assessments of climate change. Here we test, for the first time, systematically across many important systems, how well such impact models capture the impacts of extreme climate conditions. Using the 2003 European heat wave and drought as a historical analogue for comparable events in the future, we find that a majority of models underestimate the extremeness of impacts in important sectors such as agriculture, terrestrial ecosystems, and heat-related human mortality, while impacts on water resources and hydropower are overestimated in some river basins; and the spread across models is often large. This has important implications for economic assessments of climate change impacts that rely on these models. It also means that societal risks from future extreme events may be greater than previously thought.
IIASA PURE arrow_drop_down Université Jean Monnet – Saint-Etienne: HALArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)École Polytechnique, Université Paris-Saclay: HALArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)Publication Database PIK (Potsdam Institute for Climate Impact Research)Article . 2019License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)Memorial University of Newfoundland: Research RepositoryArticle . 2019License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)Recolector de Ciencia Abierta, RECOLECTAArticle . 2019 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAWageningen Staff PublicationsArticle . 2019License: CC BYData sources: Wageningen Staff PublicationsHochschulschriftenserver - Universität Frankfurt am MainArticle . 2019Data sources: Hochschulschriftenserver - Universität Frankfurt am MainPublication Server of Goethe University Frankfurt am MainArticle . 2019License: CC BYData sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/s41467-019-08745-6&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 202 citations 202 popularity Top 0.1% influence Top 10% impulse Top 0.1% Powered by BIP!
more_vert IIASA PURE arrow_drop_down Université Jean Monnet – Saint-Etienne: HALArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)École Polytechnique, Université Paris-Saclay: HALArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)Publication Database PIK (Potsdam Institute for Climate Impact Research)Article . 2019License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)Memorial University of Newfoundland: Research RepositoryArticle . 2019License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2019Full-Text: https://hal.science/hal-02895259Data sources: Bielefeld Academic Search Engine (BASE)Recolector de Ciencia Abierta, RECOLECTAArticle . 2019 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAWageningen Staff PublicationsArticle . 2019License: CC BYData sources: Wageningen Staff PublicationsHochschulschriftenserver - Universität Frankfurt am MainArticle . 2019Data sources: Hochschulschriftenserver - Universität Frankfurt am MainPublication Server of Goethe University Frankfurt am MainArticle . 2019License: CC BYData sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/s41467-019-08745-6&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2018Embargo end date: 01 Jan 2019 United Kingdom, United Kingdom, Netherlands, United Kingdom, Finland, SwitzerlandPublisher:Springer Science and Business Media LLC Funded by:EC | IMPRESSIONS, AKA | Pathways linking uncertai...EC| IMPRESSIONS ,AKA| Pathways linking uncertainties in model projections of climate and its effects / Consortium: PLUMESFlorian Wimmer; Kiyoshi Takahashi; Martina Flörke; Eric Audsley; Rik Leemans; Akihiko Ito; Minoru Yoshikawa; Stefan Fronzek; Sarahi Nunez; Rebecca S. Snell; Rebecca S. Snell; Daniel L. Sandars; Valentine Lafond; Timothy R. Carter; Akemi Tanaka; Harald Bugmann; Nina Pirttioja; Marc Mokrech; Victoria Janes-Bassett; Victoria Janes-Bassett; Rob Alkemade; Rob Alkemade; Yasushi Honda; Ian P. Holman;handle: 10138/340715
Responses to future changes in climatic and socio-economic conditions can be expected to vary between sectors and regions, reflecting differential sensitivity to these highly uncertain factors. A sensitivity analysis was conducted using a suite of impact models (for health, agriculture, biodiversity, land use, floods and forestry) across Europe with respect to changes in key climate and socio-economic variables. Depending on the indicators, aggregated grid or indicative site results are reported for eight rectangular sub-regions that together span Europe from northern Finland to southern Spain and from western Ireland to the Baltic States and eastern Mediterranean, each plotted as scenario-neutral impact response surfaces (IRSs). These depict the modelled behaviour of an impact variable in response to changes in two key explanatory variables. To our knowledge, this is the first time the IRS approach has been applied to changes in socio-economic drivers and over such large regions. The British Isles region showed the smallest sensitivity to both temperature and precipitation, whereas Central Europe showed the strongest responses to temperature and Eastern Europe to precipitation. Across the regions, sensitivity to temperature was lowest for the two indicators of river discharge and highest for Norway spruce productivity. Sensitivity to precipitation was lowest for intensive agricultural land use, maize and potato yields and Scots pine productivity, and highest for Norway spruce productivity. Under future climate projections, North-eastern Europe showed increases in yields of all crops and productivity of all tree species, whereas Central and East Europe showed declines. River discharge indicators and forest productivity (except Holm oak) were projected to decline over southern European regions. Responses were more sensitive to socio-economic than to climate drivers for some impact indicators, as demonstrated for heat-related mortality, coastal flooding and land use. Regional Environmental Change, 19 (3) ISSN:1436-3798 ISSN:1436-378X
Cranfield University... arrow_drop_down Cranfield University: Collection of E-Research - CERESArticle . 2018License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Regional Environmental ChangeArticle . 2019Data sources: DANS (Data Archiving and Networked Services)HELDA - Digital Repository of the University of HelsinkiArticle . 2022Data sources: HELDA - Digital Repository of the University of HelsinkiWageningen Staff PublicationsArticle . 2019License: CC BYData sources: Wageningen Staff Publicationshttp://dx.doi.org/10.1007/s101...Other literature typeData sources: European Union Open Data PortalLancaster University: Lancaster EprintsArticle . 2019Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s10113-018-1421-8&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 23 citations 23 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Cranfield University... arrow_drop_down Cranfield University: Collection of E-Research - CERESArticle . 2018License: CC BYData sources: Bielefeld Academic Search Engine (BASE)Regional Environmental ChangeArticle . 2019Data sources: DANS (Data Archiving and Networked Services)HELDA - Digital Repository of the University of HelsinkiArticle . 2022Data sources: HELDA - Digital Repository of the University of HelsinkiWageningen Staff PublicationsArticle . 2019License: CC BYData sources: Wageningen Staff Publicationshttp://dx.doi.org/10.1007/s101...Other literature typeData sources: European Union Open Data PortalLancaster University: Lancaster EprintsArticle . 2019Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s10113-018-1421-8&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu