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Title: Evaluating the Carbon Cycle of a Coupled Atmosphere-Biosphere Model

Conference ·
DOI:https://doi.org/10.1029/2002GB001870· OSTI ID:15004812

We investigate how well a coupled biosphere-atmosphere model, CCM3-IBIS, can simulate the functioning of the terrestrial biosphere and the carbon cycling through it. The simulated climate is compared to observations, while the vegetation cover and the carbon cycle are compared to an offline version of the biosphere model IBIS forced with observed climatic variables. The simulated climate presents some local biases that strongly affect the vegetation (e.g., a misrepresentation of the African monsoon). Compared to the offline model, the coupled model simulates well the globally averaged carbon fluxes and vegetation pools. The zonal mean carbon fluxes and the zonal mean seasonal cycle are also well represented except between 0{sup o} and 20{sup o}N due to the misrepresentation of the African monsoon. These results suggest that, despite regional biases in climate and ecosystem simulations, this coupled atmosphere-biosphere model can be used to explore geographic and temporal variations in the global carbon cycle.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
US Department of Energy (US)
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
15004812
Report Number(s):
UCRL-JC-149715; TRN: US200321%%95
Resource Relation:
Journal Volume: 17; Journal Issue: 1; Conference: American Geophysical Union 2002 Fall Meeting, San Francisco, CA (US), 12/07/2002--12/10/2002; Other Information: PBD: 21 Aug 2002
Country of Publication:
United States
Language:
English

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