Ever wonder why NASA’s Jim Hansen (and many others) see red at high northern latitudes?
Above 2011 Temperature Anomaly. Source: NASA GISS interactive plotter
With all that red up north, you’d think Jimbo, Gore, and Trenberth would want to get a look at that firsthand, instead of making a fossil fueled boat trip to Antarctica during peak of the southern summer melt season so they could give us grand proclamations about the melting there.
All the “hot action” is up north according the the latitude plot that accompanies the GISS anomaly map:
Funny how in the anomaly map above, with the great Texas Heat Wave this year, Texas is not red. WUWT? (The way it was portrayed in media, you’d think it was a permanent condition).
It seems to be all in the adjustments. Cooling the past helps the slope of the trend:
Guest post By Paul Homewood
GISS Surface Temperature Analysis
Now that GHCN have created a false warming trend in Iceland and Greenland , and GISS have amended every single temperature record on their database for Reykjavik going back to 1901 (except for 2010 and 2011), we should have a look at the overall effect.
The red line reflects the actual temperature records provided by the Iceland Met Office and shows quite clearly a period around 1940, followed by another 20 years later, which were much warmer than the 1970’s. GISS, as the blue line shows, have magically made this warm period disappear, by reducing the real temperatures by up to nearly 2 degrees.
Meanwhile the Iceland Met Office say that “The GHCN “corrections” are grossly in error in the case of Reykjavik”.
Just for completeness, here is the GISS trend map and latitude plot for the start of the GISS baseline (1951) to 2011.
UPDATE: 1/26/2012 10:30AM
I added (The way it was portrayed in media, you’d think it was a permanent condition) to the body of this post. since my intent with that statement about Texas wasn’t clear. I got distracted by phone calls and other business in the middle of writing this post and lost my train of thought (and I haven’t been following comments on it either). It is one of the pitfalls of trying to run a business and family while trying to keep up with the demands of this venue. Apologies to anyone who thought I was suggesting Texas summer temp data would show up in December data. Such transient events are just one more indication of the synoptic scale blocking high which caused that event, not any long term climate issue.
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
From: Trausti Jónsson
To: paul homewood
Cc: Halldór Björnsson
Sent: Monday, 23 January 2012, 17:40
Subject: Re: monthly temperatures
We have sent a questions to the GHCN database regarding this and they will look into the problem. Regarding your questions:
No we were not aware of this.
No, but we are asking for the reasons
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”.
No changes have been made in the Stykkisholmur series since about 1970, the Reykjavík and Akureyri series that I sent you have been slightly adjusted for major relocations and changes in observing hours. Because of the observing hour changes, values that where published before 1924 in Reykjavík and before 1928 in Akureyri are not compatible with the later calculation practices. For other stations in Iceland values published before 1956 are incompatible with later values except at stations that observed 8 times per day (but the differences are usually small). The linked paper outlines these problems (in English):
The monthly publication Vedrattan 1924 to 1997 (in Icelandic) is available at:
and earlier data (in Icelandic and Danish – with a summary in French) at:
Monthly data from all stations from 1961 onwards :
Til: “Trausti Jónsson”
Sent: Mánudagur, 23. Janúar, 2012 17:09:30
Efni: Re: monthly temperatures
From: Trausti Jónsson
Cc: Guðrún Þórunn Gísladóttir
Sent: Tuesday, 17 January 2012, 11:19
Subject: monthly temperatures
I attach a table including the monthly temperature averages for Reykjavik (1871), Akureyri (1881) and Stykkisholmur (1845).
Lýsing: Could you please send me, or let me know where I can access, annual mean temperatures for Reykjavik and Akureyri, back to 1900,(or when records are available from).. Many thanks Paul Homewood –