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description Publicationkeyboard_double_arrow_right Article , Journal 2006 Denmark, United Kingdom, France, United Kingdom, Switzerland, GermanyPublisher:Springer Science and Business Media LLC Authors: M.-L. Siggaard-Andersen; Regine Röthlisberger; Biancamaria Narcisi;Jean-Louis Tison;
+85 AuthorsJean-Louis Tison
Jean-Louis Tison in OpenAIREM.-L. Siggaard-Andersen; Regine Röthlisberger; Biancamaria Narcisi;Jean-Louis Tison;
Felix Fundel;Jean-Louis Tison
Jean-Louis Tison in OpenAIREJørgen Peder Steffensen;
J. R. Petit;Jørgen Peder Steffensen
Jørgen Peder Steffensen in OpenAIREDiedrich Fritzsche;
Diedrich Fritzsche
Diedrich Fritzsche in OpenAIREPhilippe Huybrechts;
Paolo Gabrielli; F. Marino;Philippe Huybrechts
Philippe Huybrechts in OpenAIREBarbara Delmonte;
Ilka Hamann; Hutterli; Torbjörn Karlin; Johannes Freitag; Jan-Gunnar Winther; Urs Federer;Barbara Delmonte
Barbara Delmonte in OpenAIREOleg Rybak;
Mika Kohno; Elisabeth Isaksson;Oleg Rybak
Oleg Rybak in OpenAIREDorthe Dahl-Jensen;
Dorthe Dahl-Jensen
Dorthe Dahl-Jensen in OpenAIREHanno Meyer;
Hanno Meyer
Hanno Meyer in OpenAIRESilvia Becagli;
K. Weiler; J. Beer; J. Beer; Renato Spahni; Jean Jouzel; J. M. Barnola; J. M. Barnola;Silvia Becagli
Silvia Becagli in OpenAIRESérgio H. Faria;
Dominique Raynaud;Sérgio H. Faria
Sérgio H. Faria in OpenAIREValérie Masson-Delmotte;
Olivier Cattani; Urs Siegenthaler; Dieter Lüthi;Valérie Masson-Delmotte
Valérie Masson-Delmotte in OpenAIREM. Bigler;
Grant M. Raisbeck; U. Ruth;M. Bigler
M. Bigler in OpenAIREMarkus Leuenberger;
Claude F. Boutron; Claude F. Boutron; H. Oerter;Markus Leuenberger
Markus Leuenberger in OpenAIREHeinrich Miller;
Heinrich Miller
Heinrich Miller in OpenAIREAmaelle Landais;
Amaelle Landais
Amaelle Landais in OpenAIRECarlo Barbante;
Wolfgang Graf; D. Dick;Carlo Barbante
Carlo Barbante in OpenAIREEric W. Wolff;
Eric W. Wolff
Eric W. Wolff in OpenAIREMaxime Debret;
George R. Hoffmann; Thomas F. Stocker; D. Grigoriev; Rainer Gersonde; Astrid Lambrecht;Maxime Debret
Maxime Debret in OpenAIRERita Traversi;
Johannes Oerlemans;Rita Traversi
Rita Traversi in OpenAIREBarbara Stenni;
Margareta Hansson; Gunther Lawer; Vania Gaspari; Dietmar Wagenbach;Barbara Stenni
Barbara Stenni in OpenAIREJochen Schmitt;
Geneviève C Littot; E. Castellano; R. S. W. van de Wal; Jakob Schwander;Jochen Schmitt
Jochen Schmitt in OpenAIREValter Maggi;
L. Loulergue;Valter Maggi
Valter Maggi in OpenAIREFrédéric Parrenin;
Frédéric Parrenin
Frédéric Parrenin in OpenAIREThomas Blunier;
Anna Wegner;Thomas Blunier
Thomas Blunier in OpenAIREFabrice Lambert;
Fabrice Lambert
Fabrice Lambert in OpenAIREM. R. van den Broeke;
S. Falourd; Sigfus J Johnsen; Fernando Valero-Delgado; Patrik R Kaufmann; Andreas Frenzel; S. Kipfstuhl;M. R. van den Broeke
M. R. van den Broeke in OpenAIREHubertus Fischer;
Jérôme Chappellaz; Jérôme Chappellaz;Hubertus Fischer
Hubertus Fischer in OpenAIREMirko Severi;
Roberto Udisti;Mirko Severi
Mirko Severi in OpenAIRERobert Mulvaney;
M. Kaczmarska;Robert Mulvaney
Robert Mulvaney in OpenAIREFrank Wilhelms;
Frank Wilhelms
Frank Wilhelms in OpenAIREdoi: 10.1038/nature05301
Precise knowledge of the phase relationship between climate changes in the two hemispheres is a key for understanding the Earth's climate dynamics. For the last glacial period, ice core studies have revealed strong coupling of the largest millennial-scale warm events in Antarctica with the longest Dansgaard-Oeschger events in Greenland through the Atlantic meridional overturning circulation. It has been unclear, however, whether the shorter Dansgaard-Oeschger events have counterparts in the shorter and less prominent Antarctic temperature variations, and whether these events are linked by the same mechanism. Here we present a glacial climate record derived from an ice core from Dronning Maud Land, Antarctica, which represents South Atlantic climate at a resolution comparable with the Greenland ice core records. After methane synchronization with an ice core from North Greenland, the oxygen isotope record from the Dronning Maud Land ice core shows a one-to-one coupling between all Antarctic warm events and Greenland Dansgaard-Oeschger events by the bipolar seesaw6. The amplitude of the Antarctic warm events is found to be linearly dependent on the duration of the concurrent stadial in the North, suggesting that they all result from a similar reduction in the meridional overturning circulation.
Nature arrow_drop_down INRIA a CCSD electronic archive serverArticle . 2006Data sources: INRIA a CCSD electronic archive serverElectronic Publication Information CenterArticle . 2006Data sources: Electronic Publication Information CenterUniversity of Copenhagen: ResearchArticle . 2006Data sources: Bielefeld Academic Search Engine (BASE)University of Bristol: Bristol ResearchArticle . 2006Data sources: Bielefeld Academic Search Engine (BASE)Natural Environment Research Council: NERC Open Research ArchiveArticle . 2006Data sources: Bielefeld Academic Search Engine (BASE)Université Savoie Mont Blanc: HALArticle . 2006Data sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2006Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2006Data 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/nature05301&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 1K citations 1,088 popularity Top 0.1% influence Top 1% impulse Top 0.1% Powered by BIP!
more_vert Nature arrow_drop_down INRIA a CCSD electronic archive serverArticle . 2006Data sources: INRIA a CCSD electronic archive serverElectronic Publication Information CenterArticle . 2006Data sources: Electronic Publication Information CenterUniversity of Copenhagen: ResearchArticle . 2006Data sources: Bielefeld Academic Search Engine (BASE)University of Bristol: Bristol ResearchArticle . 2006Data sources: Bielefeld Academic Search Engine (BASE)Natural Environment Research Council: NERC Open Research ArchiveArticle . 2006Data sources: Bielefeld Academic Search Engine (BASE)Université Savoie Mont Blanc: HALArticle . 2006Data sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2006Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2006Data 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/nature05301&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2013 Germany, France, ItalyPublisher:American Association for the Advancement of Science (AAAS) Funded by:SNSF | Climate and Environmental..., ANR | DOME A, EC | AMON-RA +1 projectsSNSF| Climate and Environmental Physics ,ANR| DOME A ,EC| AMON-RA ,SNSF| Klima- und UmweltphysikAuthors:Parrenin, F.;
Parrenin, F.
Parrenin, F. in OpenAIREMasson-Delmotte, Valérie;
Masson-Delmotte, Valérie
Masson-Delmotte, Valérie in OpenAIREKöhler, P.;
Raynaud, D.; +6 AuthorsKöhler, P.
Köhler, P. in OpenAIREParrenin, F.;
Parrenin, F.
Parrenin, F. in OpenAIREMasson-Delmotte, Valérie;
Masson-Delmotte, Valérie
Masson-Delmotte, Valérie in OpenAIREKöhler, P.;
Raynaud, D.;Köhler, P.
Köhler, P. in OpenAIREPaillard, D.;
Schwander, J.;Paillard, D.
Paillard, D. in OpenAIREBarbante, C.;
Barbante, C.
Barbante, C. in OpenAIRELandais, Amaelle;
Wegne, A.; Jouzel, Jean;Landais, Amaelle
Landais, Amaelle in OpenAIREpmid: 23449589
No Leader to Follow Changes in the concentration of atmospheric CO 2 and surface air temperature are closely related. However, temperature can influence atmospheric CO 2 as well as be influenced by it. Studies of polar ice cores have concluded that temperature increases during periods of rapid warming have preceded increases in CO 2 by hundreds of years. Parrenin et al. (p. 1060 ; see the Perspective by Brook ) present a revised age scale for the atmospheric component of Antarctic ice cores, based on the isotopic composition of the N 2 that they contain, and suggest that temperature and CO 2 changed synchronously over four intervals of rapid warming during the last deglaciation.
Science arrow_drop_down INRIA a CCSD electronic archive serverArticle . 2013Data sources: INRIA a CCSD electronic archive serverElectronic Publication Information CenterArticle . 2013Data sources: Electronic Publication Information CenterUniversité de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2013Data sources: Bielefeld Academic Search Engine (BASE)Université Savoie Mont Blanc: HALArticle . 2013Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2013Data 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=10.1126/science.1226368&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 295 citations 295 popularity Top 1% influence Top 10% impulse Top 0.1% Powered by BIP!
more_vert Science arrow_drop_down INRIA a CCSD electronic archive serverArticle . 2013Data sources: INRIA a CCSD electronic archive serverElectronic Publication Information CenterArticle . 2013Data sources: Electronic Publication Information CenterUniversité de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2013Data sources: Bielefeld Academic Search Engine (BASE)Université Savoie Mont Blanc: HALArticle . 2013Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2013Data 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=10.1126/science.1226368&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2022 NorwayPublisher:American Chemical Society (ACS) Funded by:MIURMIURAuthors:Elena Barbaro;
Elena Barbaro
Elena Barbaro in OpenAIREMatteo Feltracco;
Matteo Feltracco
Matteo Feltracco in OpenAIREAzzurra Spagnesi;
Federico Dallo; +6 AuthorsAzzurra Spagnesi
Azzurra Spagnesi in OpenAIREElena Barbaro;
Elena Barbaro
Elena Barbaro in OpenAIREMatteo Feltracco;
Matteo Feltracco
Matteo Feltracco in OpenAIREAzzurra Spagnesi;
Federico Dallo; Jacopo Gabrieli;Azzurra Spagnesi
Azzurra Spagnesi in OpenAIREFabrizio De Blasi;
Daniele Zannoni; Warren R.L. Cairns; Andrea Gambaro;Fabrizio De Blasi
Fabrizio De Blasi in OpenAIRECarlo Barbante;
Carlo Barbante
Carlo Barbante in OpenAIREThe development of new analytical systems and the improvement of the existing ones to obtain high-resolution measurements of chemical markers in samples from ice cores, is one of the main challenges the paleoclimatic scientific community is facing. Different chemical species can be used as markers for tracking emission sources or specific environmental processes. Although some markers, such as methane sulfonic acid (a proxy of marine productivity), are commonly used, there is a lack of data on other organic tracers in ice cores, making their continuous analysis analytically challenging. Here, we present an innovative combination of fast liquid chromatography coupled with tandem mass spectrometry (FLC-MS/MS) to continuously determine organic markers in ice cores. After specific optimization, this approach was applied to the quantification of vanillic and syringic acids, two specific markers for biomass burning. Using the validated method, detection limits of 3.6 and 4.6 pg mL-1 for vanillic and syringic acids, respectively, were achieved. Thanks to the coupling of FLC-MS/MS with the continuous flow analytical system, we obtained one measurement every 30 s, which corresponds to a sampling resolution of a sample every 1.5 cm with a melting rate of 3.0 cm min-1. To check the robustness of the method, we analyzed two parallel sticks of an alpine ice core over more than 5 h. Vanillic acid was found with concentrations in the range of picograms per milliliter, suggesting the combustion of coniferous trees, which are found throughout the Italian Alps.
University of Bergen... arrow_drop_down University of Bergen: Bergen Open Research Archive (BORA-UiB)Article . 2022License: CC BYFull-Text: https://hdl.handle.net/11250/3062137Data 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=10.1021/acs.analchem.1c05412&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!
more_vert University of Bergen... arrow_drop_down University of Bergen: Bergen Open Research Archive (BORA-UiB)Article . 2022License: CC BYFull-Text: https://hdl.handle.net/11250/3062137Data 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=10.1021/acs.analchem.1c05412&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2022 Spain, Denmark, ItalyPublisher:Springer Science and Business Media LLC Funded by:EC | EARLYHUMANIMPACT, UKRI | RootDetect: Remote Detect..., EC | CLIMAHAL +1 projectsEC| EARLYHUMANIMPACT ,UKRI| RootDetect: Remote Detection and Precision Management of Root Health ,EC| CLIMAHAL ,EC| ICE2ICEAuthors: Juan Pablo Corella; Niccolo Maffezzoli;Andrea Spolaor;
Paul Vallelonga; +9 AuthorsAndrea Spolaor
Andrea Spolaor in OpenAIREJuan Pablo Corella; Niccolo Maffezzoli;Andrea Spolaor;
Paul Vallelonga;Andrea Spolaor
Andrea Spolaor in OpenAIRECarlos A. Cuevas;
Carlos A. Cuevas
Carlos A. Cuevas in OpenAIREFederico Scoto;
Federico Scoto
Federico Scoto in OpenAIREJuliane Müller;
Juliane Müller
Juliane Müller in OpenAIREBo Vinther;
Bo Vinther
Bo Vinther in OpenAIREHelle A. Kjær;
Helle A. Kjær
Helle A. Kjær in OpenAIREGiulio Cozzi;
Ross Edwards;Giulio Cozzi
Giulio Cozzi in OpenAIRECarlo Barbante;
Carlo Barbante
Carlo Barbante in OpenAIREAlfonso Saiz-Lopez;
Alfonso Saiz-Lopez
Alfonso Saiz-Lopez in OpenAIREAbstractIodine has a significant impact on promoting the formation of new ultrafine aerosol particles and accelerating tropospheric ozone loss, thereby affecting radiative forcing and climate. Therefore, understanding the long-term natural evolution of iodine, and its coupling with climate variability, is key to adequately assess its effect on climate on centennial to millennial timescales. Here, using two Greenland ice cores (NEEM and RECAP), we report the Arctic iodine variability during the last 127,000 years. We find the highest and lowest iodine levels recorded during interglacial and glacial periods, respectively, modulated by ocean bioproductivity and sea ice dynamics. Our sub-decadal resolution measurements reveal that high frequency iodine emission variability occurred in pace with Dansgaard/Oeschger events, highlighting the rapid Arctic ocean-ice-atmosphere iodine exchange response to abrupt climate changes. Finally, we discuss if iodine levels during past warmer-than-present climate phases can serve as analogues of future scenarios under an expected ice-free Arctic Ocean. We argue that the combination of natural biogenic ocean iodine release (boosted by ongoing Arctic warming and sea ice retreat) and anthropogenic ozone-induced iodine emissions may lead to a near future scenario with the highest iodine levels of the last 127,000 years.
Nature Communication... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAArticle . 2022 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAUniversity of Copenhagen: ResearchArticle . 2022Data 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/s41467-021-27642-5&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 6 citations 6 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
visibility 26visibility views 26 download downloads 35 Powered bymore_vert Nature Communication... arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAArticle . 2022 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAUniversity of Copenhagen: ResearchArticle . 2022Data 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/s41467-021-27642-5&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2022 Denmark, SpainPublisher:Proceedings of the National Academy of Sciences Authors:Federico Scoto;
Federico Scoto
Federico Scoto in OpenAIREHenrik Sadatzki;
Henrik Sadatzki
Henrik Sadatzki in OpenAIRENiccolò Maffezzoli;
Niccolò Maffezzoli
Niccolò Maffezzoli in OpenAIRECarlo Barbante;
+10 AuthorsCarlo Barbante
Carlo Barbante in OpenAIREFederico Scoto;
Federico Scoto
Federico Scoto in OpenAIREHenrik Sadatzki;
Henrik Sadatzki
Henrik Sadatzki in OpenAIRENiccolò Maffezzoli;
Niccolò Maffezzoli
Niccolò Maffezzoli in OpenAIRECarlo Barbante;
Carlo Barbante
Carlo Barbante in OpenAIREAlessandro Gagliardi;
Cristiano Varin;Alessandro Gagliardi
Alessandro Gagliardi in OpenAIREPaul Vallelonga;
Paul Vallelonga
Paul Vallelonga in OpenAIREVasileios Gkinis;
Vasileios Gkinis
Vasileios Gkinis in OpenAIREDorthe Dahl-Jensen;
Dorthe Dahl-Jensen
Dorthe Dahl-Jensen in OpenAIREHelle Astrid Kjær;
Helle Astrid Kjær
Helle Astrid Kjær in OpenAIREFrançois Burgay;
François Burgay
François Burgay in OpenAIREAlfonso Saiz-Lopez;
Alfonso Saiz-Lopez
Alfonso Saiz-Lopez in OpenAIRERuediger Stein;
Ruediger Stein
Ruediger Stein in OpenAIREAndrea Spolaor;
Andrea Spolaor
Andrea Spolaor in OpenAIRESea ice decline in the North Atlantic and Nordic Seas has been proposed to contribute to the repeated abrupt atmospheric warmings recorded in Greenland ice cores during the last glacial period, known as Dansgaard-Oeschger (D-O) events. However, the understanding of how sea ice changes were coupled with abrupt climate changes during D-O events has remained incomplete due to a lack of suitable high-resolution sea ice proxy records from northwestern North Atlantic regions. Here, we present a subdecadal-scale bromine enrichment (Br enr ) record from the NEEM ice core (Northwest Greenland) and sediment core biomarker records to reconstruct the variability of seasonal sea ice in the Baffin Bay and Labrador Sea over a suite of D-O events between 34 and 42 ka. Our results reveal repeated shifts between stable, multiyear sea ice (MYSI) conditions during cold stadials and unstable, seasonal sea ice conditions during warmer interstadials. The shift from stadial to interstadial sea ice conditions occurred rapidly and synchronously with the atmospheric warming over Greenland, while the amplitude of high-frequency sea ice fluctuations increased through interstadials. Our findings suggest that the rapid replacement of widespread MYSI with seasonal sea ice amplified the abrupt climate warming over the course of D-O events and highlight the role of feedbacks associated with late-interstadial seasonal sea ice expansion in driving the North Atlantic ocean–climate system back to stadial conditions.
Proceedings of the N... arrow_drop_down Proceedings of the National Academy of SciencesArticle . 2022 . Peer-reviewedLicense: CC BY NC NDData sources: CrossrefRecolector de Ciencia Abierta, RECOLECTAArticle . 2022 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAUniversity of Copenhagen: ResearchArticle . 2022Data 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=10.1073/pnas.2203468119&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 8 citations 8 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
visibility 7visibility views 7 download downloads 40 Powered bymore_vert Proceedings of the N... arrow_drop_down Proceedings of the National Academy of SciencesArticle . 2022 . Peer-reviewedLicense: CC BY NC NDData sources: CrossrefRecolector de Ciencia Abierta, RECOLECTAArticle . 2022 . Peer-reviewedData sources: Recolector de Ciencia Abierta, RECOLECTAUniversity of Copenhagen: ResearchArticle . 2022Data 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=10.1073/pnas.2203468119&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2017 ItalyPublisher:Springer Science and Business Media LLC Funded by:EC | TREES4FUTURE, EC | EARLYHUMANIMPACTEC| TREES4FUTURE ,EC| EARLYHUMANIMPACTAuthors:Carlo Barbante;
Carlo Barbante
Carlo Barbante in OpenAIREFederico Carotenuto;
Federico Carotenuto
Federico Carotenuto in OpenAIREFranco Miglietta;
Franco Miglietta
Franco Miglietta in OpenAIREClaudio Donati;
+12 AuthorsClaudio Donati
Claudio Donati in OpenAIRECarlo Barbante;
Carlo Barbante
Carlo Barbante in OpenAIREFederico Carotenuto;
Federico Carotenuto
Federico Carotenuto in OpenAIREFranco Miglietta;
Franco Miglietta
Franco Miglietta in OpenAIREClaudio Donati;
Tobias Weil; Jacopo Gabrieli;Claudio Donati
Claudio Donati in OpenAIRECarlotta De Filippo;
Carlotta De Filippo;Carlotta De Filippo
Carlotta De Filippo in OpenAIREMassimo Pindo;
Massimo Pindo
Massimo Pindo in OpenAIREMassimiliano Pasqui;
Luisa Poto;Massimiliano Pasqui
Massimiliano Pasqui in OpenAIREDavide Albanese;
Duccio Cavalieri; Duccio Cavalieri; Lorenzo Pavarini; Birgit Sattler;Davide Albanese
Davide Albanese in OpenAIREA critical aspect regarding the global dispersion of pathogenic microorganisms is associated with atmospheric movement of soil particles. Especially, desert dust storms can transport alien microorganisms over continental scales and can deposit them in sensitive sink habitats. In winter 2014, the largest ever recorded Saharan dust event in Italy was efficiently deposited on the Dolomite Alps and was sealed between dust-free snow. This provided us the unique opportunity to overcome difficulties in separating dust associated from "domestic" microbes and thus, to determine with high precision microorganisms transported exclusively by desert dust.Our metagenomic analysis revealed that sandstorms can move not only fractions but rather large parts of entire microbial communities far away from their area of origin and that this microbiota contains several of the most stress-resistant organisms on Earth, including highly destructive fungal and bacterial pathogens. In particular, we provide first evidence that winter-occurring dust depositions can favor a rapid microbial contamination of sensitive sink habitats after snowmelt.Airborne microbial depositions accompanying extreme meteorological events represent a realistic threat for ecosystem and public health. Therefore, monitoring the spread and persistence of storm-travelling alien microbes is a priority while considering future trajectories of climatic anomalies as well as anthropogenically driven changes in land use in the source regions.
Fondazione Edmund Ma... arrow_drop_down Fondazione Edmund Mach: IRIS-OpenPubArticle . 2017Full-Text: http://hdl.handle.net/10449/38356Data 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=10.1186/s40168-017-0249-7&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 72 citations 72 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
visibility 25visibility views 25 download downloads 96 Powered bymore_vert Fondazione Edmund Ma... arrow_drop_down Fondazione Edmund Mach: IRIS-OpenPubArticle . 2017Full-Text: http://hdl.handle.net/10449/38356Data 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=10.1186/s40168-017-0249-7&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2013Publisher:EDP Sciences Authors: Paolo Gabrielli;Carlo Barbante;
Changhee Han; Sungmin Hong; +6 AuthorsCarlo Barbante
Carlo Barbante in OpenAIREPaolo Gabrielli;Carlo Barbante;
Changhee Han; Sungmin Hong; Soon Do Hur; Heejin Hwang; J. H. Kang;Carlo Barbante
Carlo Barbante in OpenAIRET-O. Soyol-Erdene;
Claude F. Boutron; L.J.Burn-Nunes;T-O. Soyol-Erdene
T-O. Soyol-Erdene in OpenAIRETrace elements (V, Cr, Mn, Fe, Co, Cu, Zn, As, Rb, Sr, Mo, Cd, Sb, Ba, Tl, Pb, Bi, Th and U) and Pb isotopic compositions from the EPICA (European Project for Ice Coring in Antarctica) Dome C ice core have been determined using inductively coupled plasma sector field mass spectrometry (ICP-SFMS) and thermal ionization mass spectrometry (TIMS), covering the period from ~533 kyr BP to ~800 kyr BP, respectively. Our data have enabled us to extend the previous EDC records of trace elements and Pb isotopes from the Holocene back to the Marine Isotopic Stage 20.2, ~800 kyr BP. We here discuss the EDC records of Ba, Rb, Mo, Sb, Cd, Tl, Bi and Pb isotopes. Crustal elements such as Ba and Rb show well defined variations in concentrations in relation to climatic conditions with lower values during the interglacial periods and much higher values during the coldest periods of the last eight climatic cycles. Volcanogenic Cd, Tl and Bi show a less pronounced relationship between concentrations and climatic conditions. The isotopic signatures of Pb suggest that changes in the provenance of dust reaching the East Antarctic Plateau from Potential Source Areas occurred during the interglacial periods before the MBE. Our data suggest that the main factors affecting deposition fluxes and sources of natural trace elements over Antarctica are most likely linked to a progressive coupling of the climates of Antarctica and lower latitudes over the past 800 kyr.
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=10.1051/e3sconf/20130123001&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 5 citations 5 popularity Average influence Average impulse Average 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=10.1051/e3sconf/20130123001&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euResearch data keyboard_double_arrow_right Dataset 2021Publisher:Zenodo Funded by:EC | ERA-PLANET, MIUR, EC | ACTRIS-2EC| ERA-PLANET ,MIUR ,EC| ACTRIS-2Authors:Spolaor Andrea;
Spolaor Andrea
Spolaor Andrea in OpenAIREVecchiato Marco;
Vecchiato Marco
Vecchiato Marco in OpenAIRECallegaro Alice;
Callegaro Alice
Callegaro Alice in OpenAIREMaffezzoli Niccolo;
+2 AuthorsMaffezzoli Niccolo
Maffezzoli Niccolo in OpenAIRESpolaor Andrea;
Spolaor Andrea
Spolaor Andrea in OpenAIREVecchiato Marco;
Vecchiato Marco
Vecchiato Marco in OpenAIRECallegaro Alice;
Callegaro Alice
Callegaro Alice in OpenAIREMaffezzoli Niccolo;
Maffezzoli Niccolo
Maffezzoli Niccolo in OpenAIRECairns Warren R.L.;
Cairns Warren R.L.
Cairns Warren R.L. in OpenAIREBarbante Carlo;
Barbante Carlo
Barbante Carlo in OpenAIREThe produced dataset (in MS Excel format) contains concentrations of mercury, trace elements and organic contaminants in snow samples collected in the Ny-Alesund area (Svalbard - Norway) (78.917° N 11.933° E) and from the Antarctic Plateau, Dome C (75.103°S, 123.35°E). The Arctic sampling sites are reported in figure 1. The concentrations for trace elements and mercury are in ngg-1 while for the organic contaminants they are reported in ngL-1. The inorganic contaminants dataset reports concentration of Hg, Trace elements and Black Carbon in Arctic and Antarctic site. The Arctic sites are subdivided in annual snow pack on the glacier and surface snow sampling close to the Gruvebadet Aerosol Laboratory. In Antarctica mercury concentrations in surface snow are also reported. The organic contaminants dataset reports the concentrations of Polycyclic Aromatic Hydrocarbons (PAHs) in surface snow samples collected close to the Gruvebadet Aerosol Laboratory (78.91622°N 11.89536°E, Ny Alesund, Norway). Samplings were performed from 04/10/2018 to 13/05/2019, obtaining a total of 35 samples, encompassing the entire winter season with an approximatively weekly resolution. Total PAH (sum of naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, benzo(a)anthracene, chrysene, benzo(b)fluoranthene, benzo(k) fluoranthene, benzo(a)pyrene, benzo(ghi)perylene, indeno(1,2,3-c,d)pyrene and dibenzo(a,h)anthracene) concentrations range from 0.8 to 37 ng L-1. Individual PAHs were mean blank corrected and average percentage abundances in the samples are reported in the dataset. {"references": ["Pet\u00e4j\u00e4, T., et al., Overview: Integrative and Comprehensive Understanding on Polar Environments (iCUPE) \u2013 concept and initial results. Atmos. Chem. Phys., 2020. 20(14): p. 8551-8592.", "Bert\u00f2, M., et al., Variability in black carbon mass concentration in surface snow at Svalbard. Atmos. Chem. Phys., 2021. 21(16): p. 12479-12493.", "Cairns, W.R.L., et al., Mercury in precipitated and surface snow at Dome C and a first estimate of mercury depositional fluxes during the Austral summer on the high Antarctic plateau. Atmospheric Environment, 2021. 262: p. 118634."]}
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=10.5281/zenodo.5254571&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
visibility 62visibility views 62 download downloads 7 Powered bymore_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=10.5281/zenodo.5254571&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2010Embargo end date: 11 Oct 2024 Switzerland, France, Italy, United Kingdom, ItalyPublisher:Springer Science and Business Media LLC Funded by:SNSF | Klima- und Umweltphysik, EC | TALDICE HOLOCENESNSF| Klima- und Umweltphysik ,EC| TALDICE HOLOCENEAuthors:B. Stenni;
B. Stenni
B. Stenni in OpenAIRED. Buiron;
D. Buiron
D. Buiron in OpenAIREM. Frezzotti;
M. Frezzotti
M. Frezzotti in OpenAIRES. Albani;
+36 AuthorsS. Albani
S. Albani in OpenAIREB. Stenni;
B. Stenni
B. Stenni in OpenAIRED. Buiron;
D. Buiron
D. Buiron in OpenAIREM. Frezzotti;
M. Frezzotti
M. Frezzotti in OpenAIRES. Albani;
S. Albani
S. Albani in OpenAIREC. Barbante;
E. Bard; J. M. Barnola; M. Baroni; M. Baumgartner;C. Barbante
C. Barbante in OpenAIREM. Bonazza;
E. Capron; E. Castellano; J. Chappellaz;M. Bonazza
M. Bonazza in OpenAIREB. Delmonte;
S. Falourd; L. Genoni; J. Jouzel; S. Kipfstuhl;B. Delmonte
B. Delmonte in OpenAIREA. Landais;
A. Landais
A. Landais in OpenAIREB. Lemieux Dudon;
B. Lemieux Dudon
B. Lemieux Dudon in OpenAIREV. Maggi;
V. Maggi
V. Maggi in OpenAIREV. Masson Delmotte;
C. Mazzola; B. Minster; M. Montagnat;V. Masson Delmotte
V. Masson Delmotte in OpenAIRER. Mulvaney;
B. Narcisi; H. Oerter;R. Mulvaney
R. Mulvaney in OpenAIREF. Parrenin;
J. R. Petit;F. Parrenin
F. Parrenin in OpenAIREC. Ritz;
C. Scarchilli;
C. Scarchilli
C. Scarchilli in OpenAIREA. Schilt;
S. Schupbach; J. Schwander;A. Schilt
A. Schilt in OpenAIREM. Severi;
T. F. Stocker; R. Udisti;M. Severi
M. Severi in OpenAIREIACUMIN, Paola;
SELMO, Enricomaria;IACUMIN, Paola
IACUMIN, Paola in OpenAIREdoi: 10.1038/ngeo1026 , 10.48350/10122
handle: 11381/2338248
Ice-core records of climate from Greenland and Antarctica show asynchronous temperature variations on millennial timescales during the last glacial period (1). The warming during the transition from glacial to interglacial conditions was markedly different between the hemispheres, a pattern attributed to the thermal bipolar see-saw (2). However, a record from the Ross Sea sector of East Antarctica has been suggested to be synchronous with Northern Hemisphere climate change (3). Here we present a temperature record from the Talos Dome ice core, also located in the Ross Sea sector. We compare our record with ice-core analyses from Greenland, based on methane synchronization (4), and find clearly asynchronous temperature changes during the deglaciation. We also find distinct differences in Antarctic records, pointing to differences in the climate evolution of the Indo-Pacific and Atlantic sectors of Antarctica. In the Atlantic sector, we find that the rate of warming slowed between 16,000 and 14,500 years ago, parallel with the deceleration of the rise in atmospheric carbon dioxide concentrations and with a slight cooling over Greenland. In addition, our chronology supports the hypothesis that the cooling of the Antarctic Cold Reversal is synchronous with the Bølling–Allerød warming in the northern hemisphere 14,700 years ago(5).
Hyper Article en Lig... arrow_drop_down Université Savoie Mont Blanc: HALArticle . 2011Full-Text: https://insu.hal.science/insu-00647558Data sources: Bielefeld Academic Search Engine (BASE)Université Grenoble Alpes: HALArticle . 2011Full-Text: https://insu.hal.science/insu-00647558Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2011Full-Text: https://insu.hal.science/insu-00647558Data sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2011Full-Text: https://insu.hal.science/insu-00647558Data sources: Bielefeld Academic Search Engine (BASE)INRIA a CCSD electronic archive serverArticle . 2011Data sources: INRIA a CCSD electronic archive serverNatural Environment Research Council: NERC Open Research ArchiveArticle . 2011Data sources: Bielefeld Academic Search Engine (BASE)Archivio della ricerca dell'Università di Parma (CINECA IRIS)Article . 2011Data 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/ngeo1026&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 203 citations 203 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Hyper Article en Lig... arrow_drop_down Université Savoie Mont Blanc: HALArticle . 2011Full-Text: https://insu.hal.science/insu-00647558Data sources: Bielefeld Academic Search Engine (BASE)Université Grenoble Alpes: HALArticle . 2011Full-Text: https://insu.hal.science/insu-00647558Data sources: Bielefeld Academic Search Engine (BASE)Institut national des sciences de l'Univers: HAL-INSUArticle . 2011Full-Text: https://insu.hal.science/insu-00647558Data sources: Bielefeld Academic Search Engine (BASE)Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQArticle . 2011Full-Text: https://insu.hal.science/insu-00647558Data sources: Bielefeld Academic Search Engine (BASE)INRIA a CCSD electronic archive serverArticle . 2011Data sources: INRIA a CCSD electronic archive serverNatural Environment Research Council: NERC Open Research ArchiveArticle . 2011Data sources: Bielefeld Academic Search Engine (BASE)Archivio della ricerca dell'Università di Parma (CINECA IRIS)Article . 2011Data 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/ngeo1026&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Journal 2018 United StatesPublisher:Copernicus GmbH Funded by:EC | EARLYHUMANIMPACT, NSF | Collaborative Research: I..., NSF | EAGER: 1500 Years of Indi...EC| EARLYHUMANIMPACT ,NSF| Collaborative Research: Indian Summer Monsoon Variability Reconstructed from Tibetan Lake Sediments ,NSF| EAGER: 1500 Years of Indian Summer Monsoon Variabilty Reconstructed from High-Resolution Tibetan Lake SedimentsAuthors:A. Callegaro;
A. Callegaro;A. Callegaro
A. Callegaro in OpenAIRED. Battistel;
D. Battistel
D. Battistel in OpenAIREN. M. Kehrwald;
+6 AuthorsN. M. Kehrwald
N. M. Kehrwald in OpenAIREA. Callegaro;
A. Callegaro;A. Callegaro
A. Callegaro in OpenAIRED. Battistel;
D. Battistel
D. Battistel in OpenAIREN. M. Kehrwald;
N. M. Kehrwald
N. M. Kehrwald in OpenAIREF. Matsubara Pereira;
F. Matsubara Pereira
F. Matsubara Pereira in OpenAIRET. Kirchgeorg;
M. D. C. Villoslada Hidalgo; B. W. Bird;T. Kirchgeorg
T. Kirchgeorg in OpenAIREC. Barbante;
C. Barbante;C. Barbante
C. Barbante in OpenAIREhandle: 1805/19724
Abstract. The fire history of the Tibetan Plateau over centennial to millennial timescales is not well known. Recent ice core studies reconstruct fire history over the past few decades but do not extend through the Holocene. Lacustrine sedimentary cores, however, can provide continuous records of local environmental change on millennial scales during the Holocene through the accumulation and preservation of specific organic molecular biomarkers. To reconstruct Holocene fire events and vegetation changes occurring on the southeastern Tibetan Plateau and the surrounding areas, we used a multi-proxy approach, investigating multiple biomarkers preserved in core sediment samples retrieved from Paru Co, a small lake located in the Nyainqentanglha Mountains (29∘47′45.6′′ N, 92∘21′07.2′′ E; 4845 m a.s.l.). Biomarkers include n-alkanes as indicators of vegetation, polycyclic aromatic hydrocarbons (PAHs) as combustion proxies, fecal sterols and stanols (FeSts) as indicators of the presence of humans or grazing animals, and finally monosaccharide anhydrides (MAs) as specific markers of vegetation burning processes. Insolation changes and the associated influence on the Indian summer monsoon (ISM) affect the vegetation distribution and fire types recorded in Paru Co throughout the Holocene. The early Holocene (10.7–7.5 cal kyr BP) n-alkane ratios demonstrate oscillations between grass and conifer communities, resulting in respective smouldering fires represented by levoglucosan peaks, and high-temperature fires represented by high-molecular-weight PAHs. Forest cover increases with a strengthened ISM, where coincident high levoglucosan to mannosan (L ∕ M) ratios are consistent with conifer burning. The decrease in the ISM at 4.2 cal kyr BP corresponds with the expansion of regional civilizations, although the lack of human FeSts above the method detection limits excludes local anthropogenic influence on fire and vegetation changes. The late Holocene is characterized by a relatively shallow lake surrounded by grassland, where all biomarkers other than PAHs display only minor variations. The sum of PAHs steadily increases throughout the late Holocene, suggesting a net increase in local to regional combustion that is separate from vegetation and climate change.
Indiana University -... arrow_drop_down Indiana University - Purdue University Indianapolis: IUPUI Scholar WorksArticle . 2018License: CC BYFull-Text: https://hdl.handle.net/1805/19724Data 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=10.5194/cp-14-1543-2018&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 26 citations 26 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Indiana University -... arrow_drop_down Indiana University - Purdue University Indianapolis: IUPUI Scholar WorksArticle . 2018License: CC BYFull-Text: https://hdl.handle.net/1805/19724Data 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=10.5194/cp-14-1543-2018&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu