TY - RPRT TI - Longwave cloud radiative forcing at the surface from ISCCP-C1 data AU - Gupta, Shashi K. AU - Ritchey, Nancy A. AU - Wilber, Anne C. AU - Darnell, Wayne L. PY - 1990 UR - https://ntrs.nasa.gov/citations/19920031310 ID - 19920031310 ER -