Upwelling Studies With Satellites

Abstract
Recent investigations with satellites over upwelling areas are presented. Using different techniques (i.e. colour enhancement and multispectral methods) the dynamics of upwelling water in connection with the Somali Current, the Canary Current and the Benguela and Agulhas Current were analyzed. Studies in the Somali Current revealed a very fast response time of the cold water onto the onset of the Southwest Monsoon. Separated cold patches were detected in the Somali upwelling area and along the Northwest Coast of Africa. They are probably produced by varying wind action. The radiation temperatures along the southwest and southeast coast of Africa showed the appearance of upwelling in connection with the Agulhas Current and the Benguela Current. Both areas are separated by the warm water from the Agulhas Current which leaves the coast in southwest direction at about 34°S.

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