VERY PRELIMINARY March 2012 SST Anomaly Update

STANDARD OPENING PARAGRAPH

The March 2012 Reynolds OI.v2 Sea Surface Temperature (SST) data through the NOAA NOMADS website won’t be official until Monday, April 9th. Refer to the schedule on the NOAA Optimum Interpolation Sea Surface Temperature Analysis Frequently Asked Questionswebpage. The following are the preliminary Global and NINO3.4 SST anomalies for March 2012 that the NOMADS website prepares based on incomplete data for the month. I’ve also included the weekly data through the week centered on March 21, 2012, but I’ve shortened the span of the weekly data, starting it in March 2004, so that the variations can be seen.

PRELIMINARY MONTHLY DATA

Based on the preliminary data, Monthly NINO3.4 SST anomalies are at -0.63 deg C. The 2011/12 La Niña has not yet ended.

Monthly NINO3.4 SST Anomalies

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The preliminary global SST anomaly has decreased a little, slowing its rise from the seasonal La Niña low. It’s presently at +0.101 deg C.

Monthly Global SST Anomalies

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WEEKLY DATA

The weekly NINO3.4 SST anomalies for the week centered on March 21, 2012 are showing a minor rise. They are now at -0.494 deg C, which is just above La Niña range.

Weekly NINO3.4 SST Anomalies

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Weekly Global SST Anomalies have warmed a small amount after the sudden upsurge and fall. They are presently at +0.113 deg C.

Weekly Global SST Anomalies

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SOURCES

SST anomaly data is available through the NOAA NOMADS website:

http://nomad1.ncep.noaa.gov/cgi-bin/pdisp_sst.sh

or:

http://nomad3.ncep.noaa.gov/cgi-bin/pdisp_sst.sh?lite=

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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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5 Responses to VERY PRELIMINARY March 2012 SST Anomaly Update

  1. ssupak says:

    So, I’m wondering how this data applies to this:

    http://data.giss.nasa.gov/gistemp/tabledata_v3/GLB.Ts+dSST.txt

    How do I figure an estimate for the March 2012 GTA from what you’ve presented here?

  2. ssupak says:

    So, how do I interpret this data as to the GTA for March 2012 as will be posted here:

    http://data.giss.nasa.gov/gistemp/tabledata_v3/GLB.Ts+dSST.txt

    Thank you.

  3. Bob Tisdale says:

    ssupak says: “So, how do I interpret this data as to the GTA for March 2012 as will be posted here:

    The GISS Land-Ocean Temperature Index data that you’ve linked, for some reason, is provided in 0.01 degrees Celsius. In other words, starting in the upper left-hand corner of their table, they show a value of -43 for January 1880, which represents a global surface temperature anomaly of -0.43 deg C. And their value of -27 for February 1880 is an anomaly of -0.27 deg C. Scroll down to the bottom of the table and they show a February 2012 value of 40 and that’s an anomaly of 0.4 deg C.

    You also asked, “How do I figure an estimate for the March 2012 GTA from what you’ve presented here?”

    I’ve presented global and NINO3.4 sea surface temperature anomalies in this post. The NINO3.4 sea surface temperature anomalies are an El Nino-Southern Oscillation Index.

    The GISS Land-Ocean Temperature Index data you’ve linked is made up of sea surface temperature data and land surface temperature data. The satellite-based Reynolds OI.v2 sea surface temperature data I presented above is the sea surface temperature data that GISS has been using for that portion since Dec 1981. When the March sea surface temperature value is becomes official in a few more weeks, GISS then:

    1. deletes the sea surface temperature data where there is seasonal sea ice.
    2. shifts the base years for anomalies to their base years of 1950-1981, and,
    3. adds their land surface temperature.

    GISS explains the very detailed process they go through on this webpage:
    http://data.giss.nasa.gov/gistemp/sources_v3/gistemp.html

    To provide you with a short answer to your question, we can’t figure an estimate for the March 2012 GTA from what I’ve presented here. The sea surface temperature data in the post represents about 70% of the total.

  4. ssupak says:

    Thank you.

  5. Pingback: Cooling, not warming…and wet, in Broome | pindanpost

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