Another GISS miss, this time in Iceland

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:

How GISS Has Totally Corrupted Reykjavik’s Temperatures

Guest post By Paul Homewood

GISS Surface Temperature Analysis

image

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.

image

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”.

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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

—– 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.

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):

Click to access Climatological1960.pdf

The monthly publication Vedrattan 1924 to 1997 (in Icelandic) is available at:

http://timarit.is/view_page_init.jsp?pubId=278&lang=is&navsel=666

and earlier data (in Icelandic and Danish – with a summary in French) at:

http://timarit.is/view_page_init.jsp?pubId=240&lang=is&navsel=666

http://timarit.is/view_page_init.jsp?pubId=241&lang=is&navsel=666

Monthly data from all stations from 1961 onwards :

http://www.vedur.is/Medaltalstoflur-txt/Manadargildi.html

Best wishes,

Trausti J.


Frá: “paul homewood”

Til: “Trausti Jónsson”

Sent: Mánudagur, 23. Janúar, 2012 17:09:30

Efni: Re: monthly temperatures

Many thanks for this.
I have noticed that in the latest version of the GHCN database, NOAA have made certain adjustments to temperatures at several Icelandic stations, which have the effect of reducing temperatures from around 1940 to 1965, and increasing temperatures since.
For instance in Reykjavik, there is something like an extra degree of warming added by these adjustments, as per the following link. Also affected are Stykkisholmur , Akureyri and Hofn.
Can I ask :-
a) Were the Iceland Met Office aware that these adjustments are being made?
b) Has the Met Office been advised of the reasons for them?
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?
d) Does the Met Office intend to modify their own temperature records in line with GHCN?
Many thanks

Paul Homewood


From: Trausti Jónsson

To: phomewooduk

Cc: Guðrún Þórunn Gísladóttir

Sent: Tuesday, 17 January 2012, 11:19

Subject: monthly temperatures

Dear Mr Homewood,

I attach a table including the monthly temperature averages for Reykjavik (1871), Akureyri (1881) and Stykkisholmur (1845).

Best wishes,

Trausti J.

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 –

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Rogelio
January 25, 2012 2:20 pm

When are the legal people going to be brought into this?

Russ in Houston
January 25, 2012 2:24 pm

um…Iceland seems to be in the blue…
REPLY: You are confusing single year anomaly and trend, see the trend map, I’m just pointing out where the red is. – Anthony

Jason H
January 25, 2012 2:34 pm

Note that the temperature plot at the top of the article is December 2011 only, not all of 2011. So of course the summer heat wave in Texas doesn’t show up. It is noticeable on the Annual plot.

David L. Hagen
January 25, 2012 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?

Eric Seufert
January 25, 2012 2:38 pm

Seriousely need a FOI request on this. This is a big deal as I imagine that one sensor has big impacts on a large area due to a lack of nearby temp stations. Someone should go to jail if this is tampering as it appears.

pittzer
January 25, 2012 2:40 pm

Makes this Texan red in the face. I want due credit for suffering through last summer. We should be ochre, damnit!

A physicist
January 25, 2012 2:42 pm

Anthony Watts asks: Funny how in the anomaly map above, with the great Texas Heat Wave this year, Texas is not red. WUWT?

When we look at the all-year 2011 map (not the December-only map), then we see Texas showing plenty hot .

Gator
January 25, 2012 2:53 pm

“Wrongway Hansen strikes again!
Red crayon, meet red hand.

Dr David
January 25, 2012 2:59 pm

In the 2011 anomaly map, the north pole seems to have a 15 degree temperature swing depending upon which way you are facing. Unless this map is cropped at 85 N, I would have expected the anomaly to converge at the pole. The south pole directional variation seems to be a bit smaller.

January 25, 2012 3:04 pm

As long as we are discussing GISS distortions….
Let’s look at the Map. It is a equi-lat, equi-longitude map that is real handy for making quick computer plots with Long,Lat plotting point. The problem is, that the plot distors area.
Apparent Area = Real Area * (1/cos(Latitude)) The Map shows Latitude 0 to 10N as the same area as Latitude 70-80 North (warm anomally) area. But the 70-80 N band is only 25% of the equatorial band.
The same goes for the Normal Mean by Latitude graph above. The X-axis should be changed to be spaced as cos(Latitude) so that 0 to 30 degrees is about 4 times bigger than 60 to 90 deg.
suddenly that spike in the right hand look a lot less important and more spurious.

January 25, 2012 3:06 pm

Rogelio says:
January 25, 2012 at 2:20 pm
When are the legal people going to be brought into this?

That’s what I want to know as well. Especially in anticipation of the outcome of the Antarctic Oh-No Tour in progress, which is sure to be a huge lie. How can one LEGALLY challenge these adjustments hiding declines and peaks and the like? It has gone beyond foolish, and through ludicrous, to settle at the bottom of the spin cesspool.

Keith Gordon
January 25, 2012 3:12 pm

This is pure fraud and should carry a custodial sentence, how can they get away with this? and what has Iceland’s Met Office got to say about it, are they complicit or not.We need answers.What ever reason they have for doing it, it can NEVER be good enough
Keith Gordon

January 25, 2012 3:13 pm

Long term forecast (up to 2020) for the Iceland’s winter and annual temperatures
http://www.vukcevic.talktalk.net/RF.htm

January 25, 2012 3:16 pm

I love Iceland. It has the best water and the best air I ever tasted.
Life in Iceland is tough, and people there tend to be on par with it.
At the same time, there is a surprising number of intellectuals there (not in the the ignoble way of the American Academia but in the noble way of the 19th-century intelligentsia).
I talked to many Icelanders; most of them hope for global warming. No wonder, considering their climate that changes every hour, usually for the worse. But when I ask Icelanders if there is, really, any indication of warming upon their shores and glaciers, they scratch their heads and shake them sorrowfully.

JPY
January 25, 2012 3:17 pm

here we go again. The GISTEMP package uses only publicly available data (specifically GHCNv3 for these areas) and performs analysis for which all the code is available, and has been replicated by outside groups.
So given that the post itself points to GHCN v3 as being the source of the change (and according to the Iceland met office, this change is an error), what do you expect the GISTEMP algorithm to do with it?
But I suppose it’s easier to blame GISS than look into why GHCN v3 (produced by NOAA) might be different.

Dave N
January 25, 2012 3:19 pm

“Funny how in the anomaly map above, with the great Texas Heat Wave this year, Texas is not red. WUWT?”
Probably because the map is for December only?

slow to follow
January 25, 2012 3:30 pm

Paul – do you have a source or reference for the Iceland Met Office comment? TIA

January 25, 2012 3:31 pm

This is just like an ancient map of the world, showing fabulous sea monsters and other strange artefacts outside known regions. You cant challenge the existence of the fabulous sea monsters and strange lands, because you’ve never been there to see for yourself whether they are there.
If you want to claim dangerous warming, but you cant find it, you put it in a place where noone is looking.

Dodgy Geezer
January 25, 2012 3:36 pm

My comment lifted verbatim from the notalotofpeoleknowthat site. I hope the moderators will allow this call for support…
@Paul Homewood
“..Their Met Office was not aware of these adjustments, but are now!..”
Good. Now we need someone to chase this through the technical press, someone else to chase this through the ‘political’ pressure groups around GISS via the newspapers, and a third party to look at all the other ‘adjustments’ for other country’s Met Offices and compare them to the real data.
I am sure the readership of WUWT will provide….

January 25, 2012 3:48 pm

No use looking for Texas heat waves here. This is the map for just December 2011. The trend map is just for Decembers.

Pierre
January 25, 2012 3:48 pm

The Texas Heat Wave plot is for July 2011, the “NASA GISS interactive plotter” shown on the WUWT Web page is for Dec. 2011. The only legal people that need to be brought are those required to permanently shut down the WUWT Web site for deliberately misinforming people.

January 25, 2012 3:48 pm

Amazing how GISS is able to root out all those (dear departed) dummies of the past who weren’t able to read thermometers, and correct their readings. People were shorter back then, and looking up at a thermometer induced parallax errors on the high side, apparently.
This is the same stuff GISS has been doing for years, aped more recently in the USHCN v2 climate set.

January 25, 2012 4:02 pm

JPY says:
January 25, 2012 at 3:17 pm

Here we go again. The GISTEMP package uses only publicly available data (specifically GHCNv3 for these areas) and performs analysis for which all the code is available, and has been replicated by outside groups.

Which “outside group” replicated a presumed 3°C measurement error in the 1940s? The Teletubbies? How do you replicate ad hoc adjustments to verified historical data?

January 25, 2012 4:10 pm

What effect does the location of monitoring stations have on the raw data and would it not requier newer temps to be lowered and older left alone or inflated. I look at temp records like currency inflation graphs where one is stated in terms a given point with changes ballanced out.

Bill Marsh
January 25, 2012 4:15 pm

JPY says:
January 25, 2012 at 3:17 pm
Here we go again. The GISTEMP package uses only publicly available data (specifically GHCNv3 for these areas) and performs analysis for which all the code is available, and has been replicated by outside groups.
————————-
I suppose if you ask them, “Which Outside Groups?”, they’d answer, “TOP …. outside groups” 😉

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