AN ESTIMATION OF SAGE II CLOUD LONGWAVE RADIATIVE FORCING BETWEEN 1985 AND 1998: PRELIMINARY RESULTS

摘要

The present study investigates the cloud longwave radiative forcing (CLRF) based on cloud observations of the Stratospheric Aerosol and Gas Experiment (SAGE) II between November 1984 and December 1998, along with the meteorological information provided to the SAGE II data processing team by the National Center for Environment Prediction (NCEP). The preliminary results suggest a range of the global mean CLRF of about ―34 to ―68 W/m~2 and a range of increasing CLRF trend of about 0.5 to 1.0 W/m~2/decade for the 15-year period of the SAGE II observation.