Paul Homewood
Following the pause busting adjustments made by RSS, we need to keep in mind how GISS have been up to the same tricks for years.
Last year, of course, they instituted the same massive set of
adjustments that NOAA had done, following Thomas Karl’s efforts.
However, although these were by far the largest ones, in recent years
other adjustments had been made, gradually cooling the past and warming
the present.
One of the problems in trying to keep track is that, unlike RSS, they
don’t archive old data. Also, because they only report anomalies, it is
impossibly to identify which years have been adjusted in absolute
terms.
Fortunately, bloggers have been archiving their own GISS records, and
we also have the Wayback Machine, so we can piece together some of the
recent alterations. ........
These may only be small amounts, but cumulatively they gradually add
up, and over such a short period of time can be quite significant.
Also we don’t know what other changes took place prior to 2008, or
what 2014 would have looked like if the 2008 methodology was still being
used.
But if we add the 0.01C adjustment. made between the 2008 to 2015
versions, to the 2014 discrepancy of 0.05C, we get a total of 0.06C.
This is more than half of the claimed increase from 1998 to 2014."
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