Abstract

Global satellite data are analyzed to determine trends in oceanic wind speed and wave height over the 33-year period 1985 to 2018. The analysis uses an extensive database obtained from a total of 31 satellite missions comprising three independent instruments—altimeters, radiometers and scatterometers. The analysis shows small increases in mean wind speed and wave height over this period, with stronger increases in extreme conditions (90th percentiles). The strongest increases occur in the Southern Ocean. Confidence in the results is strengthened because the wind speed trends are confirmed by all three satellite systems. An extensive set of sensitivity analyses confirm that both the mean and 90th percentile trends are robust with non-significant impacts caused by satellite calibration and sampling patterns.

Description

Multiplatform evaluation of global trends in wind speed and wave height | Science

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