Abstract

The radiative modulation of the planet by clouds depends on the cloud optical properties and the temperature difference between the surface and the cloud. These properties can, to first order, be estimated based on the cloud classification (e.g., stratus, cumulonimbus, altocumulus). This study investigates cloud radiative forcing as a function of cloud classification. In addition, for clear sky conditions, the greenhouse parameter is determined. This is accomplished by collocated AVHRR (Advanced Very High Resolution Radiometer) observations within the ERBE (Earth Radiation Budget Experiment) scanner footprints. This collocation in time and space, allows one to take full advantage of the capabilities of each instrument.

© 1993 Optical Society of America