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The effect of windspeed on sea surface temperature retrieval from space

Harris, AR; Brown, SJ; Mason, IM; (1994) The effect of windspeed on sea surface temperature retrieval from space. Geophysical Research Letters , 21 (16) 1715 - 1718. 10.1029/94GL01276. Green open access

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Abstract

The effect of windspeed on water emissivity, whilst being negligible around normal incidence, becomes significant above angles of about 50-degrees. We calculate the effect of windspeed On retrieved sea surface temperature and show that errors become significant for the potentially very accurate Along Track Scanning Radiometer (ATSR, carried on board ESA's first remote sensing satellite, ERS-1) since brightness temperatures measured at almost-equal-to 56-degrees, as well as those measured at nadir, are used to provide improved atmospheric correction. We show that when an SST retrieval algorithm generated assuming zero windspeed is applied to brightness temperatures calculated for windspeeds of 5, 10 and 15 m/s, a potential error of up to 0.4 K is introduced. Since coincident windspeed data can be obtained from the ERS-1 radar altimeter, accurate correction can be made for this effect and we Provide a Preliminary algorithm for the correction of ATSR SST data.

Type: Article
Title: The effect of windspeed on sea surface temperature retrieval from space
Open access status: An open access version is available from UCL Discovery
DOI: 10.1029/94GL01276
Publisher version: http://dx.doi.org/10.1029/94GL01276
Language: English
Additional information: Copyright 1994 by the American Geophysical Union
Keywords: Atmospheric correction, Infrared measurements, Channels
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1303976
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