PRELIMINARY April 2013 Sea Surface Temperature Anomaly Update

STANDARD OPENING PARAGRAPH

The April 2013 Reynolds OI.v2 Sea Surface Temperature (SST) data through the NOAA NOMADS website won’t be official until Monday, May 6th 2013. Refer to the schedule on the NOAA Optimum Interpolation Sea Surface Temperature Analysis Frequently Asked Questions webpage. The following are the preliminary Global and NINO3.4 SST anomalies for April 2013 that the NOMADS website prepares based on incomplete data for the month. I’ve also included the weekly data through the week centered on April 24, 2013, but I’ve shortened the span of the weekly data. As noted in the recent mid-April update, I’ve started January 2001, so that the variations can be seen AND so that you can see how “flat” global surface temperature anomalies have been since then.

The base years for anomalies are 1971-2000, which are the standard base years from the NOAA NOMADS website for this dataset.

PRELIMINARY MONTHLY DATA

The preliminary global sea surface temperature anomalies warmed a slight amount (+0.025 deg C) in the last month. The global sea surface temperature anomalies are presently at about +0.24 deg C. That of course will change a little when the full month of data is reported in a week.

Global Monthly

Monthly Global SST Anomalies

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The sea surface temperature anomalies of the NINO3.4 region in the eastern equatorial Pacific (5S-5N, 170W-120W) are a commonly used index for the strength, frequency, and duration of El Niño and La Niña events. Based on the preliminary data, April 2013 NINO3.4 sea surface temperature anomalies are basically zero (about -0.03 deg C). That indcates we’re in ENSO-neutral conditions, meaning the tropical Pacific is not showing El Niño or La Niña conditions. Also refer to the weekly data that follows.

NINO3.4 Monthly

Monthly NINO3.4 SST Anomalies

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WEEKLY DATA

Weekly NINO3.4 region (5S-5N, 170W-120W) sea surface temperature anomalies for the week centered on February 27, 2013 have been relatively constant near zero. The weekly NINO3.4 sea surface temperature anomalies were approximately -0.02 deg C.

NINO3.4 Weekly

Weekly NINO3.4 SST Anomalies

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Weekly Global SST Anomalies have shown some volatility over the past few weeks, a reasonably large spike, then drop, and minor rebound. They are presently about +0.23 deg C.

Global Weekly

Weekly Global SST Anomalies

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INTERESTED IN LEARNING MORE ABOUT THE EL NIÑO AND LA NIÑA AND THEIR LONG-TERM EFFECTS ON GLOBAL SEA SURFACE TEMPERATURES?

Why should you be interested? Sea surface temperature records indicate El Niño and La Niña events are responsible for the warming of global sea surface temperature anomalies over the past 30 years, not manmade greenhouse gases. I’ve searched sea surface temperature records for more than 4 years and ocean heat content records for more than 3 years, and I can find no evidence of an anthropogenic greenhouse gas signal in either dataset. That is, the warming of the global oceans has been caused by Mother Nature, not anthropogenic greenhouse gases.

I’ve recently published my e-book (pdf) about the phenomena called El Niño and La Niña. It’s titled Who Turned on the Heat? with the subtitle The Unsuspected Global Warming Culprit, El Niño Southern Oscillation. It is intended for persons (with or without technical backgrounds) interested in learning about El Niño and La Niña events and in understanding the natural causes of the warming of our global oceans for the past 30 years. Because land surface air temperatures simply exaggerate the natural warming of the global oceans over annual and multidecadal time periods, the vast majority of the warming taking place on land is natural as well. The book is the product of years of research of the satellite-era sea surface temperature data that’s available to the public via the internet. It presents how the data accounts for its warming—and there are no indications the warming was caused by manmade greenhouse gases. None at all.

Who Turned on the Heat? was introduced in the blog post Everything You Ever Wanted to Know about El Niño and La Niña… …Well Just about Everything. The Free Preview includes the Table of Contents; the Introduction; the beginning of Section 1, with the cartoon-like illustrations; the discussion About the Cover; and the Closing. The book was updated recently to correct a few typos.

Please buy a copy. (Credit/Debit Card through PayPal. You do NOT have to open a PayPal account. Simply scroll down to the “Don’t Have a PayPal Account” purchase option. It’s only US$8.00.

SOURCE

The Sea Surface Temperature anomaly data used in this post 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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