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Satellite-Altimeter Measurements of Surface Height in Sea-Ice Areas (Abstract)

Published online by Cambridge University Press:  20 January 2017

S.W. Laxon  and
C.G. Rapley
S.W. Laxon
Affiliation:
Mullard Space Science Laboratory, University College London, Dorking, Surrey RH5 6NT, U.K.
C.G. Rapley
Affiliation:
Mullard Space Science Laboratory, University College London, Dorking, Surrey RH5 6NT, U.K.
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Abstract

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The Seasat radar altimeter was designed to operate over the open ocean and encountered problems over sea ice. In particular, the on-board measurements of surface height were noisy and unreliable. As a consequence, published mean sea-surface and geoid maps based on the Seasat on-board height estimates either omit sea-ice-covered areas or include suspect data. We have identified and investigated the problems encountered by the Seasat altimeter over sea ice and have developed a technique for extracting accurate surface-height values from the sea-ice echo wave-form data. The retracking method is based upon fitting real wave forms to a library of model returns.

Type
Abstract
Information
Annals of Glaciology , Volume 9 , 1987 , pp. 240
Copyright
Copyright © International Glaciological Society 1987