Observations of Irminger Sea Anticyclonic Eddies

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Ifremer

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Ifremer

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2013 American Meteorological Society , info:eu-repo/semantics/openAccess , restricted use


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North Atlantic Ocean Eddies Mesoscale processes

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Velocity Velocity nucléus

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Xue Fan et al., « Observations of Irminger Sea Anticyclonic Eddies », Archimer, archive institutionnelle de l'Ifremer, ID : 10.1175/JPO-D-11-0155.1


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Mesoscale anticyclonic eddies in the Irminger Sea are observed using a mooring and a glider. Between 2002 and 2009, the mooring observed 53 anticyclones. Using a kinematic model, objective estimates of eddy length scales and velocity structure are made for 16 eddies. Anticyclones had a mean core diameter of 12 km, and their mean peak observed azimuthal speed was 0.1 m s(-1). They had core salinities and potential temperatures of 34.91-34.98 and 4.488-5.34 degrees C, respectively, making them warm and salty features. These properties represent a typical salinity anomaly of 0.03 and a temperature anomaly of 0.28 degrees C from noneddy values. All eddies had small (

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