Mid-September 2011 SST Anomaly Update


NINO3.4 Sea Surface Temperature (SST) anomalies (a commonly used El Niño-Southern Oscillation Index) are still within weak La Niña range. For the week centered on September 14, 2011, NINO3.4 SST anomalies are approximately -0.68 deg C.

NINO3.4 SST Anomalies – Short-Term


Weekly Global SST anomalies appear to have peaked for the season.  For the week centered on September 13, 2011, Global SST anomalies are +0.146 deg C, which is about where they were in the Mid-July 2011 SST Anomaly Update.

Global SST Anomalies – Short-Term


This weekly Reynolds OI.v2 SST dataset begins in 1990. I’ve started the graphs in 2004 to make the variations visible.


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


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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3 Responses to Mid-September 2011 SST Anomaly Update

  1. Keith Minto says:

    Is this overview of the Pacific, by Noaa, Laboratory for Satellite Altimetry. http://ibis.grdl.noaa.gov/SAT/SeaLevelRise/index.php (right side) a useful, general overview of Nino/Nina progression?. It seems that east/west sea levels are a reasonable indicator but I would like your opinion.

  2. Juraj V. says:

    Hi Bob, what do you think about the above? Cold La Nina subsurface pool evolves, but the usual build-up of warm pool more to the west is like diminishing. Is it a case, when La Nina does not recharge the OHC, maybe connected with cold PDO phase?

  3. Bob Tisdale says:

    Juraj V. : If you recall earlier in the year, the Western Equatorial Pacific had been recharging. Not sure what happened to it, but that slice is not too thick.

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