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Thursday, May 28, 2009

ICOADS Monthly Tropical and Extratropical SST Samplings from 1800 to 2008

I’ve moved to WordPress.  This post can now be found at ICOADS Monthly Tropical and Extratropical SST Samplings from 1800 to 2008
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I regularly mention in ENSO posts that there was little SST sampling in the eastern equatorial Pacific prior to the opening of the Panama Canal in 1914, that the reader needs to keep that in mind when viewing early NINO3.4 data.

BUT THE SAME HOLDS TRUE FOR ALL SST DATA

The farther back in time we explore, the less accurate the SST data becomes because of the minimal sampling in early years.

I’m working on a post about a curious dataset created by JISAO, the Global-SST ENSO Index.
http://www.jisao.washington.edu/data_sets/globalsstenso/
Attached to it are listings of the number of monthly tropical and extratropical ICOADS SST readings (the last two columns here)…
http://www.jisao.washington.edu/data_sets/globalsstenso/globalsstenso18002008.ascii
…which I’ve broken down into five graphs. It’s very easy to see why the Hadley Centre and the NCDC don’t present SST anomaly data before 1850.
http://i42.tinypic.com/2w53hip.jpg
1800 to 2008
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http://i41.tinypic.com/3502ka1.jpg
1800 to 1849
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http://i44.tinypic.com/1zevwv8.jpg
1850 to 1899
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http://i43.tinypic.com/2m6jrwg.jpg
1900 to 1949
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http://i42.tinypic.com/14tlvmq.jpg
1950 to 2008

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Comments that are political in nature or that have nothing to do with the post will be deleted.
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The Smith and Reynolds SST Posts DOES NOT LIST ALL SST POSTS. I stopped using ERSST.v2 data for SST when NOAA deleted it from NOMADS early in 2009.

Please use the search feature in the upper left-hand corner of the page for posts on specific subjects.
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