Monday, 3 June 2002
The springtime radiative forcing of aerosols over the eastern Asia/western Pacific region
The eastern Asia/western Pacific region typically experiences large loadings of atmospheric aerosols during the springtime that can have a major effect on the radiative balance of the region and beyond. To quantify these effects we use the NAAPS (Navy Aerosol Analysis and Prediction System) global aerosol model combined with the Fu-Liou radiative transfer model to obtain estimates of the surface and top of the atmosphere aerosol forcing in the springtime in the eastern Asia/western Pacific region. NAAPS is a tropospheric aerosol model that generates near real-time, global forecasts of aerosol loading. It uses meteorological fields from the Navy Operational Global Atmospheric Prediction System (NOGAPS) to generate dust, sulfate, and smoke forecasts on a 1 X 1 degree grid at 6-hour intervals out to 120-hours. The historical output from NAAPS for previous springs will be input into the Fu-Liou radiative transfer model to estimate the aerosol forcing in the region. In particular we will focus on the spring of 2001 to coincide with the timeframe of the ACE-Asia field experiment. ACE-Asia was based out of Japan and used surface, airborne, and satellite-based measurements to study the radiative and microphysical properties of the aerosols flowing off of the Asian continent. During ACE-Asia NRL supplied detailed aerosol forecasts for the region of interest (eastern Asia and western Pacific) that have been qualitatively verified by satellite and ground-based measurements.