>January 2009 SST Anomaly Update

>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 January 28, 2009. The rest of the graphs illustrate raw monthly OI.v2 SST anomaly data from November 1981 to January 2009.

The monthly change (January 2009 Minus December 2008) in Global SST anomalies was approximately -0.018 deg C. The only two datasets with increases were the South Atlantic (+0.068 deg C) and the Arctic Ocean (+0.021 deg C). The other Ocean datasets showed decreases. NINO3.4 SST anomalies are well below the threshold of a La Nina, but it would require a few more months of NINO3.4 SST anomalies below -0.5 deg C for the CPC to consider this a full-fledged La Nina event.

NINO3.4 SST ANOMALIES BASED ON WEEKLY OI.v2 SST DATA

http://i43.tinypic.com/fee4cn.jpg
NINO3.4 SST Anomaly (Weekly)
Present Value = -0.94
#####

MONTHLY OI.v2 SST UPDATES

http://i40.tinypic.com/10frsif.jpg
NINO3.4 SST Anomaly (Monthly)
Monthly Change = -0.261 deg C
#####
http://i40.tinypic.com/1js3kw.jpg
Global SST
Monthly Change = -0.018 deg C
#####

http://i42.tinypic.com/2hzn8r9.jpg
Northern Hemisphere
Monthly Change = -0.021 deg C
#####

http://i41.tinypic.com/142anaq.jpg
Southern Hemisphere
Monthly Change = -0.016 deg C
#####
http://i40.tinypic.com/xc1ytf.jpg
North Atlantic (0 to 75N, 78W to 10E)
Monthly Change = -0.036 deg C
#####

http://i42.tinypic.com/2qkm9i0.jpg
South Atlantic (0 to 60S, 70W to 20E)
Monthly Change = +0.068 deg C
#####

http://i40.tinypic.com/ohsjfp.jpg
North Pacific (0 to 65N, 100 to 270E, where 270E=90W)
Monthly Change = -0.009 Deg C
#####
http://i41.tinypic.com/fdx66a.jpg
South Pacific (0 to 60S, 145 to 290E, where 290E=70W)
Monthly Change = -0.043 deg C
#####

http://i42.tinypic.com/okmupu.jpg
Indian Ocean (30N to 60S, 20 to 145E)
Monthly Change = -0.054 deg C
#####

http://i40.tinypic.com/2uikmki.jpg
Arctic Ocean (65 to 90N)
Monthly Change = +0.021 deg C
#####

http://i41.tinypic.com/kcedd2.jpg
Southern Ocean (60 to 90S)
Monthly Change = -0.060 deg C

SOURCE

The Optimally Interpolated Sea Surface Temperature Data (OISST) are available through the NOAA National Operational Model Archive & Distribution System (NOMADS).http://nomads.ncdc.noaa.gov/#climatencdc

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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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