Assessing the Net Carbon Balance of Western Siberia: Results from the EUROSIBERIAN CARBONFLUX Project (1998-2000)

Details Assessing the Net Carbon Balance of Western Siberia: Results from the EUROSIBERIAN CARBONFLUX Project (1998-2000) Assessing the Net Carbon Balance of Western Siberia: Results from the EUROSIBERIAN CARBONFLUX Project (1998-2000)

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufm.b51c..06h&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #B51C-06

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0300 Atmospheric Composition And Structure, 0315 Biosphere/Atmosphere Interactions, 0400 Biogeosciences, 4805 Biogeochemical Cycles (1615)

Scientific paper

EUROSIBERIAN CARBONFLUX (1998-2000) constitutes a feasibility study for the development of an observing system to quantify the net regional (1-2000 km) and continental scale carbon balance of western Siberia and Eastern Europe and its variation from year to year. This goal is addressed by means of an integrated top-down and bottom-up approach consisting of: (1) Continuous surface flux measurements of CO2 in key ecosystems at 2 locations in Western Russia (Fyodorovskoye, 56N, 33E), and Central Siberia (Zotino, 60N, 90E). (2) Regular (every 2-4 weeks) vertical profile measurements in the lower troposphere with light aircraft of the concentration of CO2 and other carbon cycle relevant tracers (carbon and oxygen isotopes, CO, CH4, O2/N2 ratio) at 3 locations (Fyodorovskoye, 56N, 33E, Syktyvkar, 62N, 53E, and Zotino, 60N, 90E) along a West-East zonal gradient across Russia. (3) Development and implementation of a continental scale meteorological and biogeochemical-model framework for determination of net carbon balance of the study region by means of forward and inverse model simulations. Up to now almost three years of data have been obtained, documenting (1) the interannual climate impact on surface fluxes and (2) the seasonal cycle and mean annual gradients of the atmospheric carbon tracers in the planetary boundary layer and the overlying free troposphere in the interior of the Eurasian continent. The developed modeling system consists of a global transport model with a nested meso-scale atmospheric model over boreal Eurasia, linked to a surface model of carbon exchange fluxes based on remote sensing data (NDVI). Starting in 2002, the observing system will be expanded ina follow-up project to Eastern Siberia, the northern Eurasian tundra and the Mongolian grasslands. >http://www.bgc-jena.mpg.de/~martin.heimann/eurosib

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