>December 2008 SST Update

>The first graph, the NINO3.4 SST anomaly graph marked weekly, illustrates raw weekly OI.v2 SST anomaly data that’s centered on Wednesdays, from January 3, 1990 to December 31, 2008. The rest of the graphs illustrate raw monthly OI.v2 SST anomaly data from November 1981 to December 2008.

The monthly change (December 2008 Minus November 2008) in Global SST anomalies was approximately +0.019 deg C, driven primarily by the South Atlantic and South Pacific Oceans, which dominate the area of the Southern Hemisphere ocean. The remainder of the Ocean datasets showed decreases. The one-year change in Global SST anomaly since December 2007 was approximately +0.161 deg C, a rebound from the induced dip of last year’s significant La Nina. Present NINO3.4 SST anomalies are well below the threshold of a La Nina, but they aren’t at last year’s levels. With a few more months of NINO3.4 SST anomalies below -0.5 deg C, the CPC would consider it a full-fledged La Nina event and color code the anomaly values blue on its Oceanic Nino Index (ONI).

NINO3.4 SST ANOMALIES BASED ON WEEKLY OI.v2 SST DATA
http://i42.tinypic.com/j7ugdx.jpg
NINO3.4 SST Anomaly (Weekly)
Present Value = -1.088
#####

MONTHLY OI.v2 SST UPDATES
http://i41.tinypic.com/1q2ws3.jpg
NINO3.4 SST Anomaly (Monthly)
Monthly Change = -0.51 deg C
#####
http://i44.tinypic.com/33y54cp.jpg
Global SST
Monthly Change = +0.019 deg C
#####
http://i40.tinypic.com/ev46qx.jpg
Northern Hemisphere
Monthly Change = -0.068 deg C
#####
http://i39.tinypic.com/rsqwqv.jpg
Southern Hemisphere
Monthly Change = +0.088 deg C
#####
http://i41.tinypic.com/vfxveb.jpg
North Atlantic (0 to 75N, 78W to 10E)
Monthly Change = -0.061 deg C
#####
http://i43.tinypic.com/jii55l.jpg
South Atlantic (0 to 60S, 70W to 20E)
Monthly Change = +0.212 deg C
#####
http://i40.tinypic.com/2gu9v8j.jpg
North Pacific (0 to 65N, 90 to 180W) & (0 to 65N, 100 to 180E)
Monthly Change = -0.072 Deg C
#####
http://i43.tinypic.com/2zg6aro.jpg
South Pacific (0 to 60S, 70 to 180W) & (0 to 60S, 145 to 180E)
Monthly Change = +0.144 deg C
#####
http://i42.tinypic.com/28a52dk.jpg
Indian Ocean (30N to 60S, 20 to 145E)
Monthly Change = -0.033 deg C
#####
http://i39.tinypic.com/ngfbs.jpg
Arctic Ocean (65 to 90N)
Monthly Change = -0.019 deg C
#####
http://i40.tinypic.com/ka6a78.jpg
Southern Ocean (60 to 90S)
Monthly Change = -0.056 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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