Seasat
Seasat A was the first satellite designed for sensing of the Earth's oceans with active microwave instruments. Specific objectives were to collect data on sea-surface winds, ocean topography, sea-surface temperatures, wave heights, wave length and direction, atmospheric water, and sea ice features. The mission ended after 116 days due to a failure of the vehicle's electric power system.
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The Seasat satellite in orbit
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Global wind speed and direction are
shown in this image using recently processed data acquired in 1978 by Seasat.
The colors represent wind speed and the arrows show wind direction.
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