Longwave cloud radiative forcing at the surface from ISCCP-C1 dataA method for deriving one component of the total cloud forcing picture, namely, the LW cloud forcing at the surface, is presented. The method is based on a validated radiative transfer technique and utilizes meteorological data available from the International Satellite Cloud Climatology Project. The radiative transfer model used was validated earlier and the TOVS-derived temperature and water vapor data used were generally reasonable. On a monthly-average basis, random error was estimated to be in the 5-10 W/sq m range, but biases as large as 10-20 W/sq m can occur in some regions. The lack of information on cloud-base heights were found to be the largest source of errors in the models and the meteorological data.
Document ID
19920031310
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gupta, Shashi K. (Lockheed Engineering and Sciences Co. Hampton, VA, United States)
Ritchey, Nancy A. (Lockheed Engineering and Sciences Co. Hampton, VA, United States)
Wilber, Anne C. (Lockheed Engineering and Sciences Co. Hampton, VA, United States)
Darnell, Wayne L. (NASA Langley Research Center Hampton, VA, United States)