Composite potential temperature and moisture profiles from radiosondes collected in nearly solid stratus during FIRE (from San Nicolas Island, SNI) and more broken cloud conditions during ASTEX from Santa Maria (SM) and the German R/V Vldivi (VALD). The fractional cloudiness for each of these composite soundings was obtained using laser ceilometers. The fractional cloudiness for SNI as 0.82 while for SM and VALD it was 0.67 and 0.40 respectively. (After Jensen, 1993; and Albrecht et al., 1993).