Thursday, December 27, 2007

La Nina hanging around

Equatorial Pacific SSTs have come up a bit since October, but they are still cool and at least in this region, the primary La Nina indicators are still in place. This monthly composite image (Nov 07) from the MODIS-Aqua satellite shows in very nice detail that the surface cool water in the eastern Pacific is still pronounced, although it is showing a little more warmth from the previous month. Easterly wind anomalies are still strong, but there is still a warm mass at about 150-200m depth that will sooner or later come to the surface and help to dissipate some of this cool water. Still see this LN weakening through the winter, and we should have an interesting climatological year ahead of us in '08.

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