Self - Induced Ekman Pumping Over Oceanic Mesoscale Eddies
Self - Induced Ekman Pumping Over Oceanic Mesoscale Eddies
Self - Induced Ekman Pumping Over Oceanic Mesoscale Eddies
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Composite Averages of Eddy-<strong>Induced</strong> Vorticity and<br />
<strong>Ekman</strong> <strong>Pumping</strong> Velocity in the South Indian Ocean<br />
Composite Averages of Current-<strong>Induced</strong> <strong>Ekman</strong> <strong>Pumping</strong><br />
Geostrophic Vorticity<br />
from Altimetry<br />
geostrophic vorticity current-induced pumping observed <strong>Ekman</strong> pumping<br />
South Indian Ocean<br />
m s-1 per 100 km<br />
cm day-1 anticyclones cm day cyclones<br />
-1<br />
contour interval<br />
2 cm<br />
Composite Averages of Current-<strong>Induced</strong> <strong>Ekman</strong> <strong>Pumping</strong><br />
Surface Current-<strong>Induced</strong><br />
<strong>Ekman</strong> Pumpming<br />
from Altimetry<br />
<strong>Ekman</strong> Pumpming<br />
from QuikSCAT<br />
South Indian Ocean<br />
cm day-1 anticyclones cyclones<br />
contour interval<br />
0.5 cm day -1<br />
contour interval<br />
0.5 cm day -1<br />
The nearly circular regions of<br />
strong upwelling and downwelling<br />
are indicative of highly variable<br />
direction of the wind stress.<br />
The somewhat weaker upwelling<br />
velocities in the QuikSCAT<br />
composites are again consistent<br />
with small mislocations of the<br />
eddy centroids because of noise<br />
in the altimeter SSH fields.
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