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Eddy covariance raw data processing for CO2 and energy fluxes calculation at ICOS ecosystem stations

handle: 10138/298976 , 10067/1562560151162165141 , 11573/1665180 , 10568/99039
Abstract The eddy covariance is a powerful technique to estimate the surface-atmosphere exchange of different scalars at the ecosystem scale. The EC method is central to the ecosystem component of the Integrated Carbon Observation System, a monitoring network for greenhouse gases across the European Continent. The data processing sequence applied to the collected raw data is complex, and multiple robust options for the different steps are often available. For Integrated Carbon Observation System and similar networks, the standardisation of methods is essential to avoid methodological biases and improve comparability of the results. We introduce here the steps of the processing chain applied to the eddy covariance data of Integrated Carbon Observation System stations for the estimation of final CO2, water and energy fluxes, including the calculation of their uncertainties. The selected methods are discussed against valid alternative options in terms of suitability and respective drawbacks and advantages. The main challenge is to warrant standardised processing for all stations in spite of the large differences in e.g. ecosystem traits and site conditions. The main achievement of the Integrated Carbon Observation System eddy covariance data processing is making CO2 and energy flux results as comparable and reliable as possible, given the current micrometeorological understanding and the generally accepted state-of-the-art processing methods.
- Helmholtz Association of German Research Centres Germany
- Central Maine Community College United States
- Karlsruhe Institute of Technology Germany
- Instituto de Investigación en Cambio Global Spain
- CGIAR Consortium France
FOOTPRINT PREDICTION, 550, FREQUENCY-RESPONSE CORRECTIONS, biosphere-atmosphere exchange, UNCERTAINTY, turbulent fluxes, 630, CARBON, ATTENUATION, ICOS; protocol; method standardisation, SONIC ANEMOMETER, greenhouse gases, protocol, EXCHANGE, Biology, PART II, info:eu-repo/classification/ddc/550, ddc:550, method standardisation, Environmental sciences, Earth sciences, climate change, ICOS, WATER-VAPOR, BALANCE, ICOS; method standardisation; biosphere-atmosphere exchange; turbulent fluxes; protocol, info:eu-repo/classification/ddc/640
FOOTPRINT PREDICTION, 550, FREQUENCY-RESPONSE CORRECTIONS, biosphere-atmosphere exchange, UNCERTAINTY, turbulent fluxes, 630, CARBON, ATTENUATION, ICOS; protocol; method standardisation, SONIC ANEMOMETER, greenhouse gases, protocol, EXCHANGE, Biology, PART II, info:eu-repo/classification/ddc/550, ddc:550, method standardisation, Environmental sciences, Earth sciences, climate change, ICOS, WATER-VAPOR, BALANCE, ICOS; method standardisation; biosphere-atmosphere exchange; turbulent fluxes; protocol, info:eu-repo/classification/ddc/640
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