Detecting the surface salinity signature of Gulf Stream cold-core rings in Aquarius synergistic products
16 pages, 9 figures, 1 table
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American Geophysical Union
2015-02
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| Online Access: | http://hdl.handle.net/10261/113400 |
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dig-icm-es-10261-1134002020-12-09T18:04:36Z Detecting the surface salinity signature of Gulf Stream cold-core rings in Aquarius synergistic products Umbert, Marta Guimbard, Sébastien Lagerloef, Gary Thompson, L. Portabella, Marcos Ballabrera-Poy, Joaquim Turiel, Antonio 16 pages, 9 figures, 1 table All Rights Reserved. New sea surface salinity (SSS) observations derived from satellite remote sensing platforms provide a comprehensive view of salt exchanges across boundary currents such as the Gulf Stream. The high resolution (45 km spatial resolution and 3 day repeat subcycle) of the Soil Moisture and Ocean Salinity (SMOS) observations allows detection (and tracking) of meander and ring structures of the Gulf Stream from SSS maps. These structures are, however, not resolved by the relatively lower resolution (100 km and 7 day repeat subcycle) of Aquarius observations. A recently developed fusion technique, based on singularity analysis, is applied in this study to reconstruct these mesoscale (from 100 km and 3 days) features in Aquarius-derived products. New quarter-degree SSS maps are obtained by fusing Aquarius data with three different geophysical templates: sea surface height (SSH) from AVISO, SSS from SMOS, and sea surface temperature (SST) from AVHRR. The proposed method exploits the theoretical correspondence among the singularity exponents of different maps of ocean-surface remotely sensed scalar fields. The analysis results over the year 2012 show that merging Aquarius with SSH data provides a series of negative salinity anomalies that better collocate with the position of the cyclonic eddies identified from sea level anomaly maps. This result is consistent with the hypothesis that this SLA derived cyclonic eddies in this area are indeed CCRs shed off the GS. © 2015. American Geophysical Union This work has been funded by the Spanish Ministry of Economy through the National R+D Plan by means of MIDAS-7 project AYA2012–39356-C05-03. M. Umbert is funded by the Spanish Ministry of Economy through FPI grant BES-2011–047173. L. Thompson was supported by NASA through grant NNX08AR30G (Ocean Surface Topography Science Team) with the University of Washington Peer Reviewed 2015-04-09T06:33:35Z 2015-04-09T06:33:35Z 2015-02 2015-04-09T06:33:35Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1002/2014JC010466 e-issn: 2169-9291 Journal of Geophysical Research: Oceans 120(2): 859-874 (2015) http://hdl.handle.net/10261/113400 10.1002/2014JC010466 https://doi.org/10.1002/2014JC010466 open American Geophysical Union |
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| description |
16 pages, 9 figures, 1 table |
| format |
artículo |
| author |
Umbert, Marta Guimbard, Sébastien Lagerloef, Gary Thompson, L. Portabella, Marcos Ballabrera-Poy, Joaquim Turiel, Antonio |
| spellingShingle |
Umbert, Marta Guimbard, Sébastien Lagerloef, Gary Thompson, L. Portabella, Marcos Ballabrera-Poy, Joaquim Turiel, Antonio Detecting the surface salinity signature of Gulf Stream cold-core rings in Aquarius synergistic products |
| author_facet |
Umbert, Marta Guimbard, Sébastien Lagerloef, Gary Thompson, L. Portabella, Marcos Ballabrera-Poy, Joaquim Turiel, Antonio |
| author_sort |
Umbert, Marta |
| title |
Detecting the surface salinity signature of Gulf Stream cold-core rings in Aquarius synergistic products |
| title_short |
Detecting the surface salinity signature of Gulf Stream cold-core rings in Aquarius synergistic products |
| title_full |
Detecting the surface salinity signature of Gulf Stream cold-core rings in Aquarius synergistic products |
| title_fullStr |
Detecting the surface salinity signature of Gulf Stream cold-core rings in Aquarius synergistic products |
| title_full_unstemmed |
Detecting the surface salinity signature of Gulf Stream cold-core rings in Aquarius synergistic products |
| title_sort |
detecting the surface salinity signature of gulf stream cold-core rings in aquarius synergistic products |
| publisher |
American Geophysical Union |
| publishDate |
2015-02 |
| url |
http://hdl.handle.net/10261/113400 |
| work_keys_str_mv |
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1777666249960980480 |