HR: 09:00h
AN: A51B-05 INVITED     [PDF]
TI: How Well Can We Constrain Regional CO2 Budgets Using Inverse Models?
AU: * Fung, I
EM: inez@atmos.berkeley.edu
AF: Berkeley Atmospheric Sciences Center, University of California, Berkeley, Berkeley, CA 94720-4767
AB: The atmospheric distribution of CO2 is the 4D response to surface CO2 sources and sinks (or forcing), and the (incomplete) mixing by the atmospheric circulation. Commonly used inversion techniques divide the total forcing spatially and temporally into regions and periods with unknown forcing strengths, and seek the optimal set of forcing strengths that best produces the observed response, in the context of an atmospheric circulation/ transport model. Because of the rapidity of CO2 mixing in the atmosphere, the sparsity of atmospheric observations, the heteorogeneity of the land surface, and high-frequency variability of surface fluxes, current inversion methods have yielded source strengths only for large spatial regions. In this paper, we review what we have learned about carbon sources and sink through inverse modeling, and explore how we could use satellite observations and ground-based ecological observations in inverse models for improving the resolution of CO2 sources and sinks.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0315 Biosphere/atmosphere interactions
DE: 0322 Constituent sources and sinks
DE: 0368 Troposphere--constituent transport and chemistry
DE: 1600 GLOBAL CHANGE (New category)
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting