Paul Homewood sends his email correspondence and supporting data from the Icelandic Met Office. Here is a PDF file containing the data (referenced in the emails): Reykjavik-1871_Akureyri-1881_Stykkisholmur-1845
—– Forwarded Message —–
From: Trausti Jónsson
To: paul homewood
Cc: Halldór Björnsson
Sent: Monday, 23 January 2012, 17:40
Subject: Re: monthly temperatures
Hi Paul.
We have sent a questions to the GHCN database regarding this and they will look into the problem. Regarding your questions:
a) Were the Iceland Met Office aware that these adjustments are being made?
No we were not aware of this.
b) Has the Met Office been advised of the reasons for them?
No, but we are asking for the reasons
c) Does the Met Office accept that their own temperature data is in error, and that the corrections applied by
GHCN are both valid and of the correct value? If so, why?
The GHCN “corrections” are grossly in error in the case of Reykjavik but not quite as bad for the other stations. But we will have a better look. We do not accept these “corrections”.
d) Does the Met Office intend to modify their own temperature records in line with GHCN?
No.
wattsupwiththat.com
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David L. Hagen says:
January 25, 2012 at 2:36 pm
Paul earlier posted on the 18th:
In both cases the temperatures from 1940 to 1964 have been adjusted downwards, and as with Reykjavik the overall effect is to create about a half a degree of warming.
On further investigation, it appears that the adjustments have actually been carried out by GHCN, whose figures GISS use. The changes seem to have taken place when they issued a revised version, 3.1, of their database in November 2011. The GHCN website gives access to all their stations and shows both adjusted and unadjusted data. Examination of these records confirms that, out of eight stations in Iceland, seven have had such artificial warming applied. . .Similar adjustments have already been found in Greenland, Ireland and Scotland. . . .
If GHCN believe the adjustments are justified, why have they not published their results and reasons for discussion, before issuing the revision?
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