Monday, May 24, 2010

Mid-May 2010 SST Anomaly Update

I’ve moved to WordPress.  This post can now be found at Mid-May 2010 SST Anomaly Update
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NOTE: The weekly OI.v2 SST data is available in two periods through the NOAA NOMADS website, from November 1981 to 1989, and from 1990 to present. I’ve been providing these mid-month updates with graphs that include the full term of the second batch of data. It’s really impossible to tell from those graphs what has transpired over the past few weeks due to the length of the dataset, so I’ve added shorter-term graphs, beginning in 2004, to make the wiggles visible.

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NINO3.4
NINO3.4 SST anomalies for the week centered on May 19, 2010 show that central equatorial Pacific SST anomalies are below zero and continuing their decline. Presently they’re at -0.21 deg C, which is in ENSO-neutral levels.
http://i49.tinypic.com/b5nsbn.png
NINO3.4 SST Anomalies
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http://i45.tinypic.com/16gd8p4.png
NINO3.4 SST Anomalies - Short-Term

GLOBAL
Weekly Global SST anomalies are still elevated, but they may have peaked for this El Nino. They are starting to show signs of a drop in response to the decline in central equatorial Pacific temperatures, but the global weekly data is much too variable to tell for sure.
http://i49.tinypic.com/23utxk2.png
Global SST Anomalies
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http://i46.tinypic.com/2whjxfp.png
Global SST Anomalies - Short-Term

SOURCE
OI.v2 SST anomaly data is available through the NOAA NOMADS system:
http://nomad3.ncep.noaa.gov/cgi-bin/pdisp_sst.sh?lite