Improved statistics of submesoscale eddies in the Baltic Sea retrieved from SAR imagery

[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 :

Issue :

Pages :

2394-2414

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://www.tandfonline.com/doi/abs/10.1080/01431161.2016.1145367

Available on ORBi :

since 16 January 2017

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