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| Titel |
The gyre-scale circulation of the North Atlantic and sea level at Brest |
| VerfasserIn |
P. L. Woodworth, N. Pouvreau, G. Wöppelmann |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 6, no. 1 ; Nr. 6, no. 1 (2010-02-08), S.185-190 |
| Datensatznummer |
250003352
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| Publikation (Nr.) |
 copernicus.org/os-6-185-2010.pdf |
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| Zusammenfassung |
| The relationship between the gyre-scale circulation of the North Atlantic,
represented by air pressure near to the centre of the sub-tropical gyre, and
sea level measured at the eastern boundary of the ocean has been
investigated using records commencing in the middle of the 18th century.
These time series are twice as long as those employed in an earlier
study of this relationship. Near-continuous values of annual mean sea level
and mean high water from Brest, and air pressure fields for the eastern
North Atlantic derived from terrestrial instrumental pressure records and
ship logbook information, have been used to demonstrate that sea level on
the eastern boundary does indeed appear to be related to air pressure at the
centre of the gyre (subject to reservations concerning short sub-sections of
data near to the ends of the records). These findings confirm the earlier
conclusions but over much longer timescales. This relationship can explain
at least part of the century timescale accelerations in European sea level
records obtained from tide gauge and saltmarsh data. This finding has
important implications for interpretation of the observed sea level rise and
acceleration on the European Atlantic coast, suggesting that redistribution
of water could play an important role instead of (or as well as) change in
ocean volume. |
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