Significance of cyclonic SubTropical Oceanic Rings of Magnitude (STORM) eddies for the carbon budget of the euphotic layer in the subtropical northeast Atlantic
Author Posting. © American Geophysical Union, 2003. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 108, C12 (2003): 3383, doi:10.1029/2003JC001884. The interannu...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/3630 2023-05-15T17:41:14+02:00 Significance of cyclonic SubTropical Oceanic Rings of Magnitude (STORM) eddies for the carbon budget of the euphotic layer in the subtropical northeast Atlantic Mourino, Beatriz Fernandez, Emilio Etienne, Helene Hernandez, Fabrice Giraud, Sylvie 2003-12-20 application/pdf https://hdl.handle.net/1912/3630 en_US eng American Geophysical Union https://doi.org/10.1029/2003JC001884 Journal of Geophysical Research 108, C12 (2003): 3383 https://hdl.handle.net/1912/3630 doi:10.1029/2003JC001884 Journal of Geophysical Research 108, C12 (2003): 3383 doi:10.1029/2003JC001884 Mesoscale eddies Organic carbon deficit Subtropical northeast Atlantic Article 2003 ftwhoas https://doi.org/10.1029/2003JC001884 2022-05-28T22:58:02Z Author Posting. © American Geophysical Union, 2003. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 108, C12 (2003): 3383, doi:10.1029/2003JC001884. The interannual and seasonal variability of cyclonic eddies budded from the Azores Current during the period 1993–1999 in the northeast subtropical Atlantic region (20°N–34°N; 19°W–35°W) was studied by using TOPEX/Poseidon and ERS-1/2 altimeter images, the operational ocean mesoscale forecasting system SOPRANE, and a mesoscale eddies automatic detection system. Seventeen cyclonic eddies were detected and monitored for time periods ranging from 50 to 360 days. They were characterized by mean westward velocity, amplitude, diameter, and eccentricity of about 2 km d−1, 8 cm, 187 km and 0.7, respectively. The generation of cyclonic eddies was subjected to an important interannual variability, especially in 1995 when the activity of cyclonic eddies in the northeast Atlantic was more intense and associated with parallel changes in the eddy energy of the Azores Current. Seventy-five percent of the mesoscale features were generated throughout the October–February period. Significant relationships were found between the seasonal NAO index and both the annual eddy kinetic and potential energy in the Azores Current region and also the total annual area occupied by STORM eddies, calculated with a 1-year phase lag. The outcome of this study was used to estimate the contribution of STORM eddies to the organic carbon deficit measured in the northeast subtropical Atlantic. On average, these eddies accounted for <1% of the net community production in the region. This work has been done by CLS under contract (98.87.064.00.470.29.25) with SHOM/ CMO. This study was funded by the European Commission under the CANIGO contract MAS3CT960060 and CICYT. B. Mouriño was supported by a FPU fellowship from the Ministerio de Educacio´n y Cultura (Spain). Article in Journal/Newspaper Northeast Atlantic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Journal of Geophysical Research 108 C12 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Mesoscale eddies Organic carbon deficit Subtropical northeast Atlantic |
spellingShingle |
Mesoscale eddies Organic carbon deficit Subtropical northeast Atlantic Mourino, Beatriz Fernandez, Emilio Etienne, Helene Hernandez, Fabrice Giraud, Sylvie Significance of cyclonic SubTropical Oceanic Rings of Magnitude (STORM) eddies for the carbon budget of the euphotic layer in the subtropical northeast Atlantic |
topic_facet |
Mesoscale eddies Organic carbon deficit Subtropical northeast Atlantic |
description |
Author Posting. © American Geophysical Union, 2003. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 108, C12 (2003): 3383, doi:10.1029/2003JC001884. The interannual and seasonal variability of cyclonic eddies budded from the Azores Current during the period 1993–1999 in the northeast subtropical Atlantic region (20°N–34°N; 19°W–35°W) was studied by using TOPEX/Poseidon and ERS-1/2 altimeter images, the operational ocean mesoscale forecasting system SOPRANE, and a mesoscale eddies automatic detection system. Seventeen cyclonic eddies were detected and monitored for time periods ranging from 50 to 360 days. They were characterized by mean westward velocity, amplitude, diameter, and eccentricity of about 2 km d−1, 8 cm, 187 km and 0.7, respectively. The generation of cyclonic eddies was subjected to an important interannual variability, especially in 1995 when the activity of cyclonic eddies in the northeast Atlantic was more intense and associated with parallel changes in the eddy energy of the Azores Current. Seventy-five percent of the mesoscale features were generated throughout the October–February period. Significant relationships were found between the seasonal NAO index and both the annual eddy kinetic and potential energy in the Azores Current region and also the total annual area occupied by STORM eddies, calculated with a 1-year phase lag. The outcome of this study was used to estimate the contribution of STORM eddies to the organic carbon deficit measured in the northeast subtropical Atlantic. On average, these eddies accounted for <1% of the net community production in the region. This work has been done by CLS under contract (98.87.064.00.470.29.25) with SHOM/ CMO. This study was funded by the European Commission under the CANIGO contract MAS3CT960060 and CICYT. B. Mouriño was supported by a FPU fellowship from the Ministerio de Educacio´n y Cultura (Spain). |
format |
Article in Journal/Newspaper |
author |
Mourino, Beatriz Fernandez, Emilio Etienne, Helene Hernandez, Fabrice Giraud, Sylvie |
author_facet |
Mourino, Beatriz Fernandez, Emilio Etienne, Helene Hernandez, Fabrice Giraud, Sylvie |
author_sort |
Mourino, Beatriz |
title |
Significance of cyclonic SubTropical Oceanic Rings of Magnitude (STORM) eddies for the carbon budget of the euphotic layer in the subtropical northeast Atlantic |
title_short |
Significance of cyclonic SubTropical Oceanic Rings of Magnitude (STORM) eddies for the carbon budget of the euphotic layer in the subtropical northeast Atlantic |
title_full |
Significance of cyclonic SubTropical Oceanic Rings of Magnitude (STORM) eddies for the carbon budget of the euphotic layer in the subtropical northeast Atlantic |
title_fullStr |
Significance of cyclonic SubTropical Oceanic Rings of Magnitude (STORM) eddies for the carbon budget of the euphotic layer in the subtropical northeast Atlantic |
title_full_unstemmed |
Significance of cyclonic SubTropical Oceanic Rings of Magnitude (STORM) eddies for the carbon budget of the euphotic layer in the subtropical northeast Atlantic |
title_sort |
significance of cyclonic subtropical oceanic rings of magnitude (storm) eddies for the carbon budget of the euphotic layer in the subtropical northeast atlantic |
publisher |
American Geophysical Union |
publishDate |
2003 |
url |
https://hdl.handle.net/1912/3630 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Journal of Geophysical Research 108, C12 (2003): 3383 doi:10.1029/2003JC001884 |
op_relation |
https://doi.org/10.1029/2003JC001884 Journal of Geophysical Research 108, C12 (2003): 3383 https://hdl.handle.net/1912/3630 doi:10.1029/2003JC001884 |
op_doi |
https://doi.org/10.1029/2003JC001884 |
container_title |
Journal of Geophysical Research |
container_volume |
108 |
container_issue |
C12 |
_version_ |
1766142685899390976 |