Temperature Adjustments Transform Arctic Climate History

NOT A LOT OF PEOPLE KNOW THAT

By Paul Homewood

The Arctic Ice Melting

We are told that the biggest sign of “climate change” is the rapidly warming Arctic, even called the World’s thermometer, proof that global warming cannot have stopped.

Certainly, the evidence of this from GISS is persuasive.

image

http://data.giss.nasa.gov/cgi-bin/gistemp/nmaps.cgi?sat=4&sst=3&type=anoms&mean_gen=1212&year1=2014&year2=2014&base1=1951&base2=1980&radius=1200&pol=pol

Yet it is well established that the Arctic warmed up rapidly during the 1930’s and 40’s, before temperatures plunged in the 1960’s and 70’s. James Hansen, himself, recognised this, as the graph below from his 1987 paper Global Trends of Measured Surface Air Temperature ,  showed.

image

http://pubs.giss.nasa.gov/docs/1987/1987_Hansen_Lebedeff_1.pdf

So how much is what we have been seeing in recent years just part of that cycle? How much warmer is the Arctic now than it was 80 years ago?

Quite a lot, according to GISS.

image

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

But can we trust their figures? We saw previously how the temperature history for Paraguay, and a large slice of the surrounding region, had been altered…

View original post 1,259 more words


One Comment on “Temperature Adjustments Transform Arctic Climate History”

  1. ren says:

    Fig. 2 Total Arctic sea ice volume from PIOMAS showing the volume of the mean annual cycle, the current year, 2010 (the year of previous September volume minimum), and 2007 (the year of minimum sea ice extent in September). Shaded areas indicate one and two standard deviations from the mean.

    Like


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