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Spectral Distribution of Cloud Cover over Africa

An analysis is made of the spectral characteristics of the cloud cover observed over Africa for a period of three ~onths. The results indicate the predominance of a 2-2.7 day spectral peak within the vicinity of the Equator (100N-I00S) with the intensity of this peak much stronger over land than over the ocean. The peak itself may not be detected if the smallest resolved area used in the data analysis is too large. Coherence was found to be maximum in belt-like configurations along certain latitude bands. The phase difference, although very noisy, indicates a horizontal scale on the order at 2000 kilometers.