The operational data collection phase of the International Satellite Cloud Climatology Project (ISCCP) began in July 1983. Since then, visible and infrared images from an international network of weather satellites have been routinely processed to produce a global cloud climatology. This report outlines the key steps in the data processing, describes the main features of the data products, and indicates how to obtain these data. We illustrate some early results of this analysis.

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*NASA Goddard Institute for Space Studies, New York, NY 10025

+NASA Headquarters, Washington, DC 20546