Some Statistical Characteristics of Cloud Motion Winds Measured over the Indian Ocean during the Summer Monsoon

Donald P. Wylie Space Science and Engineering Center, University of Wisconsin–Madison, Madison 53706

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Barry B. Hinton Space Science and Engineering Center, University of Wisconsin–Madison, Madison 53706

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Abstract

Cloud motions over the Indian Ocean for May–July 1979 were used to obtain spatial auto correlations of the deviations of the wind components from local means. Best correlations were associated with u′, low altitude clouds and alongwind displacements. Worst correlations arose from v′, high clouds and crosswind displacements. The crosswind anisotropy was ∼15%. All correlations were 0.49 or greater at 5° separation or less.

Abstract

Cloud motions over the Indian Ocean for May–July 1979 were used to obtain spatial auto correlations of the deviations of the wind components from local means. Best correlations were associated with u′, low altitude clouds and alongwind displacements. Worst correlations arose from v′, high clouds and crosswind displacements. The crosswind anisotropy was ∼15%. All correlations were 0.49 or greater at 5° separation or less.

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