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Research Abstracts Online
January - December 2011

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University of Minnesota Twin Cities
College of Food, Agricultural, and Natural Resource Sciences
Department of Soil, Water, and Climate

PI: Timothy J. Griffis

Modeling Global Carbon Isofluxes

The primary goal of this project is to improve the scientific understanding of the biophysical processes and discrimination mechanisms controlling the exchange of carbon dioxide (13CO2, 12CO2, and C18O16O) between the land and atmosphere at the ecosystem, landscape, and regional scales. Tall tower carbon isotope fluxes of CO2 are measured at an Ameriflux site (Rosemount, Minnesota) using micrometeorological techniques. However, this type of isotope measurement is very expensive and is not feasible to be conducted over larger areas and long term. Thus, the researchers are using the Community Earth System Model 1.0 (CESM1.0) to study how climate variations versus land cover change impact regional carbon cycling and the global carbon isotope budget.

Group Member

Ming Chen, Graduate Student