Regional Estimation of Terrestrial CO2 exchange from NIGEC flux Data, Satellite Imagery, and Atmospheric Composition
نویسندگان
چکیده
We have proposed an analysis of regional CO2 budgets of North America, using coupled models of terrestrial ecophysiology and biogeochemistry and the physical climate system. The models are driven by observed climates and by the time-varying observed state of the vegetated land surface as derived from satellite imagery. The coupled system has been developed to predict atmospheric trace gas composition (CO2, δC, and CO), which can be compared directly to measurements made at remote observing stations, tall towers, and by aircraft during the study period. Input data include retrospective satellite vegetation imagery at 8 km for the period 1981-1999 and analyzed weather data. Methods have been tested at the WLEF tall tower site, which can also be applied at the ARM-CART Southern Great Plains site in Oklahoma, both sites having abundant atmospheric data. Model output was used to test observing strategies and prioritize data collection, as well as to estimate the carbon balance of subcontinental regions.
منابع مشابه
Regional and Global Estimation of Terrestrial CO2 Exchange from NIGEC Flux Data
of Proposed Work: We will perform a scaling analysis of terrestrial carbon exchange using several of the NIGEC flux sites in different biomes (forest, C 4 grassland, C 3 agriculture), using a numerical model of the biophysics and biogeochemistry of plants and soils (SiB2), which includes calculations of the surface fluxes of CO 2 , energy, and moisture. This model will be used to analyze local ...
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