Posted on 01/20/2013 10:46:01 AM PST by Ernest_at_the_Beach
The Climate of Gavin: How GISS Have Changed The Temperature Record Since 2008
Guest post by Paul Homewood
I ran a post yesterday, showing how the latest version of GISSTEMP had changed from using Hadley/Reynolds to ERSST for ocean temperatures, with the result that about 0.03C had been added to recent warming.
However, this is not the only change they have made to the historical temperature record in recent years. Climate4You, fortunately, archived the GISS data in May 2008. Comparing this dataset with today’s version, we can see that about 0.10C of warming, or more, has been added to temperatures in the last decade, compared to data up to about 1950.
Alterations to temperature record 1881-2008
It must be remembered that these are only changes made by GISS since 2008. As I pointed out, prior to 2008, other adjustments of about 0.03C had already been added to the numbers originally declared just a few years earlier. These adjustments must, therefore, also be added on to the adjustments made since.
An adjustment of 0.10C or so may not seem a lot, but the latest GISS anomaly, against the baseline of 1951-80, is 0.44C. These adjustments make up about a quarter of this figure.
I have also done some digging on the original numbers GISS declared for 1998, which seem much different to what they now show. News on this later.
jc says:
This site used to carry the statement “Not evil, just wrong”. That may well apply to most of devotees and many of the proponents of the CAGW creed. It is overtime to continue to pretend it applies to all. There are enemies of humanity involved in this.
They, their actions, their manipulations, their destruction of human capacity to see reality, need to be cataloged. Be they “scientists”, “activists”, “journalists”, functionaries businesses politicians or toadies. The day is fast approaching when the world will judge them, and the evidence needs to be gathered and stored.
*****************************EXCERPT************************************
Henry Clark says:
“An adjustment of 0.10C or so may need [not] seem a lot, but the latest GISS anomaly, against the baseline of 1951-80, is 0.44C. These adjustments make up about a quarter of this figure.”
Indeed, when the claimed basis for CAGW projections is all about several tenths of a degree, each bit matters. In the example of U.S. temperature history, Hansen’s GISS changed it over a key period by at least around 0.3 degrees, as seen by comparing plots within the latter portion of http://s7.postimage.org/69qd0llcr/intermediate.gif (click to enlarge).
By actions like that, they avoid having plots widely distributed to public view become relatively closer to data like http://earthobservatory.nasa.gov/Features/ArcticIce/Images/arctic_temp_trends_rt.gif or that in the old National Geographic article at http://tinyurl.com/cxo4d3l
Those who aren’t really bothered in the slightest by the preceding do likewise with sea level rise history (actually less rise in the 2nd half of the 20th century than in the first in trustworthy data in contrast to claims otherwise), cloud cover history, solar history, arctic ice history, and just about everything.
*******************************EXCERPT*****************************************
Keith Guy says:
If GISS have managed to add 0.1 degree of warming in 4 years, then by the turn of the next century they will have made adjustments of 2.2 degrees. That’s 2.5 degrees per century. We’re doomed!
Don’t worry....the sun is on strike......lack of sunspots leads to global cooling.
**************************EXCERPT****************************************
“These adjustments make up about a quarter of [the present claimed temperature anomaly].”
That is small potatoes, compared to the fraud Steven Goddard has uncovered in the USHCN temperatures, from which I readily found that
This From "OFFICIAL SOURCES?
Ya see those blue clusters post 1800. That's mainly from Mount Tambora.
Dire global climate “predictions” are strictly GISS-work...
fyi
Thanks.
Garbage in, garbage out. That pretty well sums up the work done by GISS.
Thanks Ernest.
Apparently what Hansen has been doing is nothing but GISS-work.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.
