A21L-03:
Anthropogenic Aerosols in Asia, Radiative Forcing, and Climate Change
Tuesday, 16 December 2014: 8:30 AM
V "Ram" Ramaswamy, NOAA GFDL, Princeton, NJ, United States, Massimo A Bollasina, University of Edinburgh, Edinburgh, EH9, United Kingdom, Yi Ming, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States, Ilissa Ocko, Environmental Defense Fund New York, New York, NY, United States and Geeta Persad, Princeton University, AOS Program, Princeton, NJ, United States
Abstract:
Aerosols arising as a result of human-induced emissions in Asia form a key ‘driver’ in causing pollution and in the forcing of anthropogenic climate change. The manner of the forced climate change is sensitive to the scattering and absorption properties of the aerosols and the aerosol-cloud microphysical interactions. Using the NOAA/ GFDL global climate models and observations from multiple platforms, we investigate the radiative perturbations due to the 20th Century sulfate and carbonaceous aerosol emissions and the resultant impacts on surface temperature, tropical precipitation, Indian monsoon, hemispheric circulation, and atmospheric and oceanic heat transports. The influence of the aerosol species has many contrasts with that due to the anthropogenic well-mixed greenhouse gas emissions e.g., the asymmetry in the hemispheric climate response, but is subject to larger uncertainties. The aerosol forcing expected in the future indicates a significant control on the 21st Century anthropogenic climate change in Asia.
