Article (Scientific journals)
Improved statistics of submesoscale eddies in the Baltic Sea retrieved from SAR imagery
Karimova, Svetlana; Gade, Martin
2016In International Journal of Remote Sensing, 37 (10), p. 2394-2414
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Keywords :
submesoscale eddies; spiral eddies; eddy statistics
Abstract :
[en] In the present paper the spatio-temporal distribution of submesoscale eddies seen in Envisat Advanced Synthetic Aperture Radar (ASAR) imagery of the Baltic Sea is discussed. A total of 1250 ASAR images acquired between 2009 and 2011 form the basis of our studies and show imprints of almost 7000 submesoscale eddies. Since the visibility of vortical structures in synthetic aperture radar (SAR) imagery significantly depends on the near-surface wind speed, wind data from a numerical model of the Baltic Sea were additionally used to get improved eddy statistics. Seasonally averaged fields of near-surface wind speed, surface currents, sea surface temperature (SST), and SST gradient were also analyzed in order to reveal the role of these hydrophysical parameters in the observed spatial and temporal variation of submesoscale eddies.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Karimova, Svetlana ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Gade, Martin;  University of Hamburg
Language :
English
Title :
Improved statistics of submesoscale eddies in the Baltic Sea retrieved from SAR imagery
Publication date :
2016
Journal title :
International Journal of Remote Sensing
ISSN :
0143-1161
eISSN :
1366-5901
Publisher :
Taylor & Francis, Abingdon, United Kingdom
Volume :
37
Issue :
10
Pages :
2394-2414
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 January 2017

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