Investigation of seasonal variability of the wind stress curl over the North Atlantic Ocean by means of empirical orthogonal function analysis
The seasonal variability of the wind stress curl over the North Atlantic is investigated by means of empirical orthogonal function (EOF) analysis. The curl field is calculated from 1 year of First Global GARP Experiment wind data. It was found that 44 percent of the variability is contained in four...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19860038379 2023-05-15T17:29:55+02:00 Investigation of seasonal variability of the wind stress curl over the North Atlantic Ocean by means of empirical orthogonal function analysis Barnier, B. Unclassified, Unlimited, Publicly available Jan 15, 1986 http://ntrs.nasa.gov/search.jsp?R=19860038379 unknown http://ntrs.nasa.gov/search.jsp?R=19860038379 Accession ID: 86A23117 Copyright Other Sources 47 Journal of Geophysical Research; 91; 863-868 1986 ftnasantrs 2012-02-15T16:44:13Z The seasonal variability of the wind stress curl over the North Atlantic is investigated by means of empirical orthogonal function (EOF) analysis. The curl field is calculated from 1 year of First Global GARP Experiment wind data. It was found that 44 percent of the variability is contained in four significant eigenvectors. Their spatial patterns are characterized by basin-sized oscillations with larger amplitude to the north of 40 deg N. Their associated time series coefficients have the highest amplitude during the winter and show a tendency toward a white frequency spectrum which nevertheless exhibits noticeable peaks or gaps at certain frequencies. Physically, the first EOF is seen as the seasonal fluctuations of the mean wind stress curl pattern. Five other eigenvectors are also found to be above the noise level, but they account for only a smaller percentage of variability (19 percent). They are characterized by smaller spatial scales than the basin size. Their time series coefficients show a whiter frequency spectrum. Other/Unknown Material North Atlantic NASA Technical Reports Server (NTRS) Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
language |
unknown |
topic |
47 |
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47 Barnier, B. Investigation of seasonal variability of the wind stress curl over the North Atlantic Ocean by means of empirical orthogonal function analysis |
topic_facet |
47 |
description |
The seasonal variability of the wind stress curl over the North Atlantic is investigated by means of empirical orthogonal function (EOF) analysis. The curl field is calculated from 1 year of First Global GARP Experiment wind data. It was found that 44 percent of the variability is contained in four significant eigenvectors. Their spatial patterns are characterized by basin-sized oscillations with larger amplitude to the north of 40 deg N. Their associated time series coefficients have the highest amplitude during the winter and show a tendency toward a white frequency spectrum which nevertheless exhibits noticeable peaks or gaps at certain frequencies. Physically, the first EOF is seen as the seasonal fluctuations of the mean wind stress curl pattern. Five other eigenvectors are also found to be above the noise level, but they account for only a smaller percentage of variability (19 percent). They are characterized by smaller spatial scales than the basin size. Their time series coefficients show a whiter frequency spectrum. |
format |
Other/Unknown Material |
author |
Barnier, B. |
author_facet |
Barnier, B. |
author_sort |
Barnier, B. |
title |
Investigation of seasonal variability of the wind stress curl over the North Atlantic Ocean by means of empirical orthogonal function analysis |
title_short |
Investigation of seasonal variability of the wind stress curl over the North Atlantic Ocean by means of empirical orthogonal function analysis |
title_full |
Investigation of seasonal variability of the wind stress curl over the North Atlantic Ocean by means of empirical orthogonal function analysis |
title_fullStr |
Investigation of seasonal variability of the wind stress curl over the North Atlantic Ocean by means of empirical orthogonal function analysis |
title_full_unstemmed |
Investigation of seasonal variability of the wind stress curl over the North Atlantic Ocean by means of empirical orthogonal function analysis |
title_sort |
investigation of seasonal variability of the wind stress curl over the north atlantic ocean by means of empirical orthogonal function analysis |
publishDate |
1986 |
url |
http://ntrs.nasa.gov/search.jsp?R=19860038379 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
geographic |
Curl |
geographic_facet |
Curl |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19860038379 Accession ID: 86A23117 |
op_rights |
Copyright |
_version_ |
1766125158376931328 |