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A more complete view of radiative forcing and feedback

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Wednesday, 21 March 2018, 12:00

Wednesday March 21, 2018. 12:00 PM. A more complete view of radiative forcing and feedback. Yi Huang, McGill University.Sponsored by NOAA GFDL. More information here.

Climate forcing and feedback are usually analyzed at the top of atmosphere or troposphere. In this talk I will discuss the radiative forcing and feedback also concerning the surface and atmospheric energy budgets. This analysis is enabled by a new set of surface and TOA radiation kernels that we developed. A few results will be discussed: 1)Changes in poleward energy transports in the atmosphere and ocean, which we find are both driven by the non-uniform distribution pattern of the CO2 radiative forcing and for which the TOA only perspective is misleading for some feedbacks; 2) ENSO, where we notice a positive feedback of cloud via atmospheric radiation that strongly influences the ENSO amplitude; and 3) Interannual variability of Arctic sea ice, the connection of which to surface radiative forcing and feedback is analyzed. 

Location   Smagorinsky Seminar Room, NOAA GFDL, Princeton, NJ