An investigation of Ekman upwelling in the North Atlantic
The spatial and temporal variability of the North Atlantic Ekman upwelling fields on seasonal and interannual time scales is investigated on the basis of surface winds from the Fleet Numerical Oceanography Center for 1979-1986. A pronounced minimum in the basin-wide monthly mean vertical Ekman veloc...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19930066882 2023-05-15T17:29:10+02:00 An investigation of Ekman upwelling in the North Atlantic Mcclain, Charles R. Firestone, James Unclassified, Unlimited, Publicly available July 15, 1993 http://ntrs.nasa.gov/search.jsp?R=19930066882 unknown http://ntrs.nasa.gov/search.jsp?R=19930066882 Accession ID: 93A50879 Copyright Other Sources 48 Journal of Geophysical Research; 98; C7; p. 12,327-12,339. 1993 ftnasantrs 2012-02-15T20:14:13Z The spatial and temporal variability of the North Atlantic Ekman upwelling fields on seasonal and interannual time scales is investigated on the basis of surface winds from the Fleet Numerical Oceanography Center for 1979-1986. A pronounced minimum in the basin-wide monthly mean vertical Ekman velocities during 1981-1982 is found. It is shown that the primary source of the interannual signal was the region off NW Africa in the vicinity of the Guinea Dome. Other sectors of the basin experienced no significant interannual trends. Hydrographic data and SST data from the NW Africa sector for 1981-1986 indicate a cooling trend beginning in late 1982, consistent with increased upwelling. The fall and winter seasons' mixed layers at the center of the Guinea Dome were deeper in 1984 and 1985 than in previous years. The potential impact of large interannual variations in Ekman upwelling on basin-wide primary productivity is discussed. Other/Unknown Material North Atlantic NASA Technical Reports Server (NTRS) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
48 |
spellingShingle |
48 Mcclain, Charles R. Firestone, James An investigation of Ekman upwelling in the North Atlantic |
topic_facet |
48 |
description |
The spatial and temporal variability of the North Atlantic Ekman upwelling fields on seasonal and interannual time scales is investigated on the basis of surface winds from the Fleet Numerical Oceanography Center for 1979-1986. A pronounced minimum in the basin-wide monthly mean vertical Ekman velocities during 1981-1982 is found. It is shown that the primary source of the interannual signal was the region off NW Africa in the vicinity of the Guinea Dome. Other sectors of the basin experienced no significant interannual trends. Hydrographic data and SST data from the NW Africa sector for 1981-1986 indicate a cooling trend beginning in late 1982, consistent with increased upwelling. The fall and winter seasons' mixed layers at the center of the Guinea Dome were deeper in 1984 and 1985 than in previous years. The potential impact of large interannual variations in Ekman upwelling on basin-wide primary productivity is discussed. |
format |
Other/Unknown Material |
author |
Mcclain, Charles R. Firestone, James |
author_facet |
Mcclain, Charles R. Firestone, James |
author_sort |
Mcclain, Charles R. |
title |
An investigation of Ekman upwelling in the North Atlantic |
title_short |
An investigation of Ekman upwelling in the North Atlantic |
title_full |
An investigation of Ekman upwelling in the North Atlantic |
title_fullStr |
An investigation of Ekman upwelling in the North Atlantic |
title_full_unstemmed |
An investigation of Ekman upwelling in the North Atlantic |
title_sort |
investigation of ekman upwelling in the north atlantic |
publishDate |
1993 |
url |
http://ntrs.nasa.gov/search.jsp?R=19930066882 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19930066882 Accession ID: 93A50879 |
op_rights |
Copyright |
_version_ |
1766122799063105536 |