>Absolute RSS MSU TLT Data

>If you haven’t noticed, KNMI has added RSS MSU TLT data to their Climate Explorer:
http://climexp.knmi.nl/selectfield_obs.cgi?someone@somewhere

In absolute form, the Global TLT data of course includes seasonal variations, as shown in Figure 1.

http://i40.tinypic.com/141qvra.png
Figure 1

And for those who are interested in things like these, Figure 2 shows the Annual Global TLT Minimums, Maximums, and Means and their trends. The linear trend of the annual maximums is higher than the minimums. And curiously, the trends for the annual means and minimums are the same.

http://i40.tinypic.com/260g26f.png
Figure 2

And there’s always Global TLT anomalies and linear trend, Figure 3.

http://i41.tinypic.com/2qan2wj.png
Figure 3

At present, the RSS TLT data at KNMI is lagging a few months.

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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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2 Responses to >Absolute RSS MSU TLT Data

  1. Anonymous says:

    >BobI don't know how to duplicate the data for Figures 1 and 2 so I can't check this. The slopes of the satellite data are almost entirely caused by the jump raise in temperatures after the 1998 El Nino. The slopes before the El Nino (taken from Jan 1979 to Sept 1997 – the 6th month after ONI first = 0.5 ) are much less that the overall slope. Matter of fact the Annual Min temperatures appear to fall during this time and the Annual Max and Mean look to be slightly +ve. Putting in straight trend lines obscures this interesting and perhaps important observation. This result is quite different from the land based temps based on GISS, NCDC, Hadcrut or whatever.It will be interesting to see what happens in the next decade.

  2. Bob Tisdale says:

    >Anonymous: You wrote, "The slopes of the satellite data are almost entirely caused by the jump raise in temperatures after the 1998 El Nino."The early period is also biased downward by the volcanic eruptions in 1982 and 1991. And there's also a smaller upward step change from the 1986/87/88 El Nino, not as large as the one from the 1997/98 El Nino, but it's there.http://bobtisdale.blogspot.com/2009/06/rss-msu-tlt-time-latitude-plots.html

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