>VERY, VERY Preliminary July 2009 SST Anomalies

>A quick check of the NOAA NOMADS system for the OI.v2 SST data revealed that the preliminary July 2009 data had been posted yesterday. Based on the schedule listed in the following FAQ page, the data will not be finalized until July 10.

So here’s a brief early look at the direction the global and NINO3.4 SST anomaly data are headed. Preliminary July 2009 Global SST anomaly data is showing a very slight drop, -0.02 deg C, since June 2009, while NINO3.4 SST anomalies are continuing their rise. Preliminary July 2009 NINO3.4 SST anomalies are 0.93 deg C, up 0.32 deg C since June. The graphs follow.

But first, here’s the preliminary map. It’s still showing the unusual pattern in the North Pacific, though it’s becoming less defined. Refer to my post “The Unusual SST Anomaly Pattern in the Pacific.”
Preliminary July 2009 Global SST Anomaly Map

And comparing the July and June maps in an animated gif, the unusual warm area in the Northeastern tropical Pacific appears to be ebbing as the waters along the equator are warming. Is this a result of the increased convection over the equator as SST there rises? This would cause an inflow of winds and, in turn, probably lower the SST in the adjacent tropics as the surface waters are drawn toward the equator.
Comparison of June and Preliminary July 2009 Global SST Anomaly Maps
Preliminary July 2009 Global SST Anomalies
Preliminary July 2009 NINO3.4 SST Anomalies


OI.v2 SST anomaly data is available through the NOAA NOMADS website:

About Bob Tisdale

Research interest: the long-term aftereffects of El Niño and La Nina events on global sea surface temperature and ocean heat content. Author of the ebook Who Turned on the Heat? and regular contributor at WattsUpWithThat.
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