Planned closure, one day only - NCAR Mesa Lab - Saturday April 18 more info>
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Aerosol-Cloud Interactions are a significant forcing agent on climate. Altering aerosols affect cloud droplet and ice crystal number, affecting cloud brightness (cloud radiative effect) and precipitation formation. Aerosols affect global and regional climate by changing the radiative forcing, and altering precipitation formation. The complexities and problems of simulating scales from the micro scale to the global will be discussed, along with new strategies to attempt to simulate these interactions better, with updated cloud microphysics for global models and how we plan to better simulate clouds in the Community Earth System Model. The implications for climate forcing by aerosols will be discussed: an analysis of recent aerosol emissions indicates growing emissions which may contribute to forcing the recent temperature record over the last 10 years. The pattern of forcing and response observed indicates that aerosols may be a significant contributor to the lack of N. Hemisphere warming over the last 10 years.
Seminars are live webcast: http://www.fin.ucar.edu/it/mms/ml-live.htm