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Proceedings Paper

Evidence of different regional behaviours in the oceanic response to atmospheric pressure variations and their departures from the hypothetical isostatic response
Author(s): Jesus Gomez-Enri; Pilar Villares; Rafael Jimenez-Garay; Manuel Catalan-Perez-Urquiola; Jerome Benveniste
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Paper Abstract

We have used the first three years of ERS-2 altimeter data (May 1995 - June 1998) in order to analyse the space-temporal ocean response to atmospheric pressure variations in the three main ocean world basins: Atlantic, Indian and Pacific. We have also quantified the magnitude of the departures of this response from the hypothetical barometric factor (-0.995 cm/mbar), commonly applied to altimeter data records to eliminate the effect of the atmospheric pressure variations in the ocean (Inverse Barometer Correction). From the results obtained, we have found a different behaviour in the Atlantic Ocean with respect to the other two basins, as far as the magnitude of the barometric factor is concerned. Considering that we have estimated the meridional response to atmospheric pressure variations by applying the collinear track and the crossover track methods, the Atlantic Ocean response is quite similar to the one deduced from the isostatic assumption at all latitudinal bands. Nonetheless, Indian and Pacific Oceans show important departures from the hypothetical value at low latitudes. In order to understand why the Atlantic Ocean response is different from the one obtained in the others two, we can infer some explanations but it seems that the different climatology in the basins could be explaining the results obtained, especially the effect of winds.

Paper Details

Date Published: 14 February 2003
PDF: 9 pages
Proc. SPIE 4880, Remote Sensing of the Ocean and Sea Ice 2002, (14 February 2003);
Show Author Affiliations
Jesus Gomez-Enri, Univ. of Cadiz (Spain)
Pilar Villares, Univ. of Cadiz (Spain)
Rafael Jimenez-Garay, Univ. of Cadiz (Spain)
Manuel Catalan-Perez-Urquiola, Univ. of Cadiz (Spain)
Jerome Benveniste, European Space Agency/ESRIN (Italy)

Published in SPIE Proceedings Vol. 4880:
Remote Sensing of the Ocean and Sea Ice 2002
Charles R. Bostater Jr.; Rosalia Santoleri, Editor(s)

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