Solar radiation enters the Earth's atmosphere with a portion being scattered by clouds and aerosols.

Processing, archiving and distributing Earth science data
at the NASA Langley Research Center

What is ERBS?

Earth Radiation Budget Satellite (ERBS) is a dedicated NASA research satellite launched by Space Shuttle Challenger in October 1984 and was the first spacecraft to carry ERBE instruments into orbit. ERBS is in a precessing orbit (57 degree) allowing the ERBE instruments on board this satellite to provide complete diurnal sampling in 72 days. The ERBS satellite mission came to an official end on August 2005 after 20+ years of continuous operations.