Annual westward propagating anomalies near 26 degrees N and eddy generation south of the Canary Islands: remote sensing (altimeter/SeaWIFS) and in situ measurement
Seasonal changes in altimeter data are derived for the North Atlantic Ocean. Altimeter data are then used to examine annually propagating structure along 26 degree N. By averaging the altimeter data into monthly values or by Fourier analysis, a positive anomaly can be followed from 17 degree W to si...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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ftplymouthml:oai:plymsea.ac.uk:1729 2023-05-15T17:33:19+02:00 Annual westward propagating anomalies near 26 degrees N and eddy generation south of the Canary Islands: remote sensing (altimeter/SeaWIFS) and in situ measurement Pingree, RD Garcia-Soto, C 2004 application/pdf http://plymsea.ac.uk/id/eprint/1729/ http://plymsea.ac.uk/id/eprint/1729/1/JMBA84%286%29.pdf http://www.journals.cambridge.org/jid_MBI https://doi.org/10.1017/S0025315404010549h en eng http://plymsea.ac.uk/id/eprint/1729/1/JMBA84%286%29.pdf Pingree, RD; Garcia-Soto, C. 2004 Annual westward propagating anomalies near 26 degrees N and eddy generation south of the Canary Islands: remote sensing (altimeter/SeaWIFS) and in situ measurement. Journal of the Marine Biological Association of the United Kingdom, 84 (6). 1105-1115. https://doi.org/10.1017/S0025315404010549h <https://doi.org/10.1017/S0025315404010549h> Oceanography Publication - Article PeerReviewed 2004 ftplymouthml https://doi.org/10.1017/S0025315404010549h 2022-09-13T05:46:32Z Seasonal changes in altimeter data are derived for the North Atlantic Ocean. Altimeter data are then used to examine annually propagating structure along 26 degree N. By averaging the altimeter data into monthly values or by Fourier analysis, a positive anomaly can be followed from 17 degree W to similar to 50 degree W along similar to 26 degree N. The methods give a westward travel speed of 1 degree of longitude a month and a half-life of one year for the average decaying structure. At similar to 50 degree W 26 degree N, the average structure is about 2.8 years old with an elevation signal of similar to 1 cm, having gravelled similar to 3300 km westward. The mean positive anomaly results from the formation of anticyclonic eddies which are generally formed annually south of the Canary Islands by late summer and which then travel westward near 26 degree N. Individual eddy structure along 26 degree N is examined and related to in situ measurements and anomalies in the annual seasonal concentration cycle of SeaWiFS chlorophyll-a. Article in Journal/Newspaper North Atlantic Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) Journal of the Marine Biological Association of the United Kingdom 84 6 1105 1115 |
institution |
Open Polar |
collection |
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) |
op_collection_id |
ftplymouthml |
language |
English |
topic |
Oceanography |
spellingShingle |
Oceanography Pingree, RD Garcia-Soto, C Annual westward propagating anomalies near 26 degrees N and eddy generation south of the Canary Islands: remote sensing (altimeter/SeaWIFS) and in situ measurement |
topic_facet |
Oceanography |
description |
Seasonal changes in altimeter data are derived for the North Atlantic Ocean. Altimeter data are then used to examine annually propagating structure along 26 degree N. By averaging the altimeter data into monthly values or by Fourier analysis, a positive anomaly can be followed from 17 degree W to similar to 50 degree W along similar to 26 degree N. The methods give a westward travel speed of 1 degree of longitude a month and a half-life of one year for the average decaying structure. At similar to 50 degree W 26 degree N, the average structure is about 2.8 years old with an elevation signal of similar to 1 cm, having gravelled similar to 3300 km westward. The mean positive anomaly results from the formation of anticyclonic eddies which are generally formed annually south of the Canary Islands by late summer and which then travel westward near 26 degree N. Individual eddy structure along 26 degree N is examined and related to in situ measurements and anomalies in the annual seasonal concentration cycle of SeaWiFS chlorophyll-a. |
format |
Article in Journal/Newspaper |
author |
Pingree, RD Garcia-Soto, C |
author_facet |
Pingree, RD Garcia-Soto, C |
author_sort |
Pingree, RD |
title |
Annual westward propagating anomalies near 26 degrees N and eddy generation south of the Canary Islands: remote sensing (altimeter/SeaWIFS) and in situ measurement |
title_short |
Annual westward propagating anomalies near 26 degrees N and eddy generation south of the Canary Islands: remote sensing (altimeter/SeaWIFS) and in situ measurement |
title_full |
Annual westward propagating anomalies near 26 degrees N and eddy generation south of the Canary Islands: remote sensing (altimeter/SeaWIFS) and in situ measurement |
title_fullStr |
Annual westward propagating anomalies near 26 degrees N and eddy generation south of the Canary Islands: remote sensing (altimeter/SeaWIFS) and in situ measurement |
title_full_unstemmed |
Annual westward propagating anomalies near 26 degrees N and eddy generation south of the Canary Islands: remote sensing (altimeter/SeaWIFS) and in situ measurement |
title_sort |
annual westward propagating anomalies near 26 degrees n and eddy generation south of the canary islands: remote sensing (altimeter/seawifs) and in situ measurement |
publishDate |
2004 |
url |
http://plymsea.ac.uk/id/eprint/1729/ http://plymsea.ac.uk/id/eprint/1729/1/JMBA84%286%29.pdf http://www.journals.cambridge.org/jid_MBI https://doi.org/10.1017/S0025315404010549h |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://plymsea.ac.uk/id/eprint/1729/1/JMBA84%286%29.pdf Pingree, RD; Garcia-Soto, C. 2004 Annual westward propagating anomalies near 26 degrees N and eddy generation south of the Canary Islands: remote sensing (altimeter/SeaWIFS) and in situ measurement. Journal of the Marine Biological Association of the United Kingdom, 84 (6). 1105-1115. https://doi.org/10.1017/S0025315404010549h <https://doi.org/10.1017/S0025315404010549h> |
op_doi |
https://doi.org/10.1017/S0025315404010549h |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
84 |
container_issue |
6 |
container_start_page |
1105 |
op_container_end_page |
1115 |
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1766131780630347776 |