ACRIMSAT (Active Cavity Radiometer Irradiance Monitor Satellite)
ACRIM-1 was the first experiment to show clearly that the TSI varies. The solar variability is so slight, however, that its study calls for continuous state-of-the-art monitoring. Theory suggests that as much as 25% of Earth's global warming may be of solar origin. It also seems that even small (0.5%) changes in the TSI over a century or more may have significant climatic effects. ACRIMSAT is part of NASA's EOS (Earth Observing System).
Related category• SATELLITES AND SPACE PROBES
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