13C.1 Carbon Climate Interactions (Invited Presentation)

Thursday, 11 January 2018: 8:30 AM
Salon J (Hilton) (Austin, Texas)
Inez Fung, Univ. of California, Berkeley, Berkeley, CA

In the first Coupled Climate Carbon Cycle Model Intercomparison Project (C4MIP), anthropogenic CO2 emissions are specified in global climate model integrations, and the concentrations of radiative CO2 are predicted as the residual in the global carbon budget, after the climate- and CO2-sensitive land and oceans sinks have been accounted for. The C4MIP results, included in the IPCC 4th Assessment Report, show that the capacities of the land and oceans to absorb CO2 decrease with warming despite higher atmospheric CO2. Carbon-climate feedbacks are thus positive and act to accelerate the warming. IPCC AR5 specifies the CO2 trajectory, and infers the concomitant trajectory of “allowable emissions”. Jay Fein shepherded the first incorporation of an interactive carbon cycle into the NCAR global climate model CSM1 and enabled the development and growth of Earth System Models.
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