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#######################MONTHLY SST ANOMALY MAP
The map of Global OI.v2 Sea Surface Temperature anomalies for April 2009 provided by NOMADS is shown below. Global SST anomalies rose approximately 0.037 deg C. The North Pacific shows the typical negative PDO pattern. The equatorial Pacific shows neutral ENSO conditions.
http://i43.tinypic.com/20axmbo.jpgApril 2009 SST Anomalies Map (Global SST Anomaly = +0.174 deg C)
AMO
The Atlantic Multidecadal Oscillation as calculated by the NOAA ESRL is detrended North Atlantic SST anomalies. Since OI.v2 SST data begins in November 1981, it does not seem appropriate to use a 28-year trend on a cycle that lasts about 60 years, so I am not presenting the AMO. Using North Atlantic SST anomalies as a reference, the AMO will have continued its drop in April. Scroll down for the North Atlantic SST anomalies.
MONTHLY OVERVIEW
The monthly change (April 2009 Minus March 2009) in Global SST anomalies was approximately +0.037 deg C. NINO3.4 SST anomalies continue to rise. There were significant changes in the South Atlantic (+0.185 deg C) and the North Pacific (-0.178 deg C).
NOTES ABOUT THE DATA
The first NINO3.4 SST anomaly graph illustrates raw WEEKLY OI.v2 SST anomaly data that’s centered on Wednesdays, from January 3, 1990 to April 22, 2009. The rest of the graphs illustrate raw monthly OI.v2 SST anomaly data from November 1981 to April 2009.
NINO3.4 SST ANOMALIES BASED ON WEEKLY OI.v2 SST DATA
http://i40.tinypic.com/212y8lw.jpgNINO3.4 SST Anomaly (Weekly)
Present Value = -0.148
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MONTHLY OI.v2 SST UPDATES
http://i43.tinypic.com/169pa39.jpgNINO3.4 SST Anomaly (Monthly)
Monthly Change = +0.246 deg C
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http://i42.tinypic.com/6j0qe0.jpgGlobal
Monthly Change = +0.037 deg C
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http://i41.tinypic.com/258w03s.jpgNorthern Hemisphere
Monthly Change = -0.033 deg C
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http://i41.tinypic.com/23ro3s7.jpgSouthern Hemisphere
Monthly Change = +0.092 deg C
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http://i40.tinypic.com/119t35y.jpgNorth Atlantic (0 to 75N, 78W to 10E)
Monthly Change = -0.037 deg C
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http://i41.tinypic.com/fcr4ht.jpgSouth Atlantic (0 to 60S, 70W to 20E)
Monthly Change = +0.185 deg C
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http://i44.tinypic.com/x6j39e.jpgNorth Pacific (0 to 65N, 100 to 270E, where 270E=90W)
Monthly Change = -0.178 Deg C
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http://i43.tinypic.com/9pxiix.jpgSouth Pacific (0 to 60S, 145 to 290E, where 290E=70W)
Monthly Change = +0.093 deg C
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http://i44.tinypic.com/av4t3q.jpgIndian Ocean (30N to 60S, 20 to 145E)
Monthly Change = -0.075 deg C
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http://i42.tinypic.com/2lo3taa.jpgArctic Ocean (65 to 90N)
Monthly Change = -0.073 deg C
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http://i42.tinypic.com/bfpeo2.jpgSouthern Ocean (60 to 90S)
Monthly Change = +0.058 deg C
SOURCE
The Optimally Interpolated Sea Surface Temperature Data (OISST) are available through the NOAA National Operational Model Archive & Distribution System (NOMADS).
http://nomad3.ncep.noaa.gov/cgi-bin/pdisp_sst.sh?lite
