ACCURATE CLOUD COVER DETERMINATION AND ITS EFFECTS ON ALBEDO COMPUTATIONS

摘要

The effect of accurate cloud cover determination on computation of the earth's albedo is investigated through utilization of Nimbus II photographic and radiometric data Satellite observed cloud cover, extracted primarily from APT (Automatic Picture Transmission) photography, is compared with standard surface observations for selected locations in the eastern United States To determine whether cloud observations from viewed areas of limited size are applicable to albedo computation, a detailed analysis of cloud reflectance, obtained from MRIR (Medium Resolution Infrared) observations, is carried out for areas of uniform cloud cover