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Detailed Reference Information |
Chelton, D.B. (1994). The sea state bias in altimeter estimates of sea level from collinear analysis of TOPEX data. Journal of Geophysical Research 99: doi: 10.1029/94JC02113. issn: 0148-0227. |
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The wind speed and significant wave height (H1/3) dependencies of the sea state bias in altimeter estimates of sea level, expressed in the form ΔhSSB=bH1/3, are examined from least squares analysis of 21 cycles of collinear TOPEX data. The bias coefficient b is found to increase in magnitude with increasing wind speed up to about 12 m s-1 and decrease monotonically in magnitude with increasing H1/3. A parameterization of b as a quadratic function of wind speed only, as in the formulation used to produce the TOPEX geophysical data records (GDRs), is significantly better than a parameterization purely in terms of H1/3. However, a four-parameter combined wind speed and wave height formulation for b (quadratic in wind speed plus linear in H1/3) significantly improves the accuracy of the sea state bias correction. The GDR formulation in terms of wind speed only should therefore be expanded to account for a wave height dependence of b. An attempt to quantify the accuracy of the sea state bias correction ΔhSSB concludes that the uncertainty is a disconcertingly large 1% of H1/3. ¿American Geophysical Union 1994 |
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Abstract |
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Keywords
Oceanography, General, Instruments and techniques, Oceanography, Physical, Sea level variations, Radio Science, Radio oceanography, Oceanography, General, Remote sensing and electromagnetic processes |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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