Constraints on tropospheric CO2 from TES and ACOS-GOSAT assessed with TCCON and HIPPO measurements
Abstract
Obtaining accurate estimates of surface fluxes of atmospheric CO2 requires an improved understanding of the processes controlling the global distribution of CO2. We investigate the global distribution of CO2 through the assimilation of Aura-TES and ACOS-GOSAT into the GEOS-Chem model. The assimilated fields are compared against HIPPO aircraft profiles and TCCON column observations, which are non-coincident with the satellite sampling. We find that column observations from GOSAT and free tropospheric CO2 from TES provide complementary information with TES assimilation improving the model values in the summertime when uptake is a maximum. In contrast we find that GOSAT XCO2 most significantly improves the overall model bias.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2012
- Bibcode:
- 2012AGUFM.A33O..04K
- Keywords:
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- 0365 ATMOSPHERIC COMPOSITION AND STRUCTURE / Troposphere: composition and chemistry