In 2007 I started monitoring a few GISS stations. Amundsen-Scott, Vostok, Halley, Davis in Antarctica. Then a few more over the years. It was just to check some of the claims of data changing. Also to see if I could plot the temps over time. Some small changes at first, but nothing of concern.
In 2008 I added more stations such as Nuuk, to check more claims. It is easy to save the temp files for each station. Picking a few stations at random points around the GISS globe, up to about 12.
Goddard was right. Past data points were changing. Usually small amounts on a monthly basis. Some station data did not change at all, but only the new monthly data were added.
In 2009 I was saving monthly data for 15 stations.Every month the most recent data is added to the end of each file. But, scanning past data it became apparent that some historical station data was being “revised” almost completely. That means that a time plot shifted by enough to notice on a temperature plot. Usually the “new” plot showed that the past became cooler. Small amounts, maybe one tenth of a degree. When I got to 20 stations, I noticed that one or two sets of data were being extensively revised every month. At the end of 2009 there was a sudden revision of more stations by larger amounts. Almost always the data before 1960 was getting cooler.
By 2010 I was up to 30 stations, plus the Antarctic four.
Akureyri, Bartow, Beaver City, Concordia, Crete NE, Ellsworth, Franklin, Gothenburg, Hanford, Honolulu, Hilo, Jan Mayen, Kodiak, Kwajaalein, La Serena, Loup City, Minden, Nantes, Nome, Norfolk Island, Nuuk, Red Cloud, St. Helena, St. Paul, Steffenville, Thiruvanantha, Truk, Wakeeny, Yakutat, Yamba.
Downloading 30 sets of temperature data to save. Then putting all data into an excel file to make plots. Then comparing time plots to see where individual data points had changed. It became clear that a regular revision of about 10 percent of all GISS stations was taking place on a monthly basis.
Every month in 2010, three of the 30 stations has changes to past data points that were visible by plotting. Looking at every point for every station is not possible, but scanning at random shows that many stations have small changes. 2011 was about the same, but at the end of 2011 was another substantial change to many stations.
In early 2012 my 10 year old hard drive died. I had a separate backup, but it was found to be virus infected to the extent that I could not save all data. I still have the drive and can open some files but can’t copy files to another drive.
In 2012 GISS began making larger changes to more past data. Some stations were showing monthly changes that could only be described as “erratic” with some large shifts for a couple months, followed by data returning to values from months earlier. Sometime in December 2012 was a very large change in past data for many stations. Some stations showed data that stopped in 2007 or 2008. In March 2013 those stations were suddenly “restored” and resumed showing complete data up to March 2013.
Every month GISS changes past data by small amounts to some historical data. Some stations are being selected for larger revisions at random times. For some stations, portions of data from decades ago vanishes completely. The numbers are replaced with “999.9″ indicating no data. Months later those same past data points re-appear, just as they were before, sometimes with small adjustments. If what is happening to a sample of 30 stations is any indication of the entire GISS data set, then I’d say that there is an Orwellian plot to manipulate the past.
There is no record of these past changes, it would be impossible to verify or reproduce those changes. Over the years, the past keeps getting colder.
h/t John Groves

Like an onion, the layers are peeled back to expose another corruption, but is it too late?
Are there enough low info citizens who will just shrug and say, “Well they’re the experts!” and “What the hell would you know?” Like my brother…..
He thinks I’m just some whack job right winger who he presumes to be ignorant and extremist.
Telling him I have been following this global warming “debate” since the 90’s does nothing to cause him to pause.
When the onion is finally peeled back morons like Jim Hansen and Gavin Schmidt are going to end up being the laughing stock scientists of their generation, the poster kiddies for fraudulent science and the best historical examples of how scientists go corrupt in pursuit of personal goals and private ambitions.
They should be in jail now but the Eco Loonies, Fruits & Nutters cover for them.
This is quite the act of criminal vandalism, eh?
I would wager they don’t even have the original data archived. They probably aren’t smart enough to be able to keep an uncorrupted database for that long. Besides, it would be quite incriminating if there were two sets of books, wouldn’t it?
In case anyone ever wondered, it is stuff exactly like this that keeps the Third World the crap-hole that it is. Petty chiseling. Just little bits of @ss-covering, concealment and theft, but it is all pervasive. Because of it public records are just corrupt enough that catastrophes happen. Such as brand new buildings that fall down because the foundation contractors cheated on the concrete and bribed the inspectors, who were happy to look the other way. Or entire tribes of people are kept in concentration camps because… well just because.
This particular bit of chiseling has aided in created a political environment in Canada which allows the Liberal Party of Ontario to construct gigantic windmills at public expense. This scam will eventually be revealed to have cost Canadians more money than every previous government scam in our history taken together. ORNGE? EMR? Gun registry? Power plants? They’re nothing compared to this. There’s hundreds of billions tied up here. They’ve jacked electric rates more than double for the whole province in a couple years, with no end in sight. That’s -billions- in direct cash money, possibly trillions in long term lost opportunity.
All possible because these little twerp Lefties were allowed to take over weather stations, of all things.
Time to clean house. Fire every single person that currently works in Environment Canada and start over.
I agree with those above who say that this was and is criminal. But don’t hold your breath about anyone being prosecuted for this.
Meanwhile Quebecers will be hosed at the pumps by their new Liberal government, which did not mention a carbon tax during the election a few months ago.
http://www.sunnewsnetwork.ca/sunnews/straighttalk/archives/2014/07/20140703-075949.html
AGW is not a hoax, it is a crime of monumental proportions.
That 1984 was an instruction manual, most of us missed.
Those who control the past control the present, seem to control the future, until reality comes visiting.
Due to the agenda driven Fools and Bandits infesting our government, this kind of corruption creeps in.
The Ends Justify the Ends.
Our cause is pure we can do no evil.
Except history shows us this never works.
Now it seems the planet may be actually cooling.
The temperature data base is too corrupted to know.
But real “proxies” like the growing sea ice in Antarctica, Alaska’s weather, our current Northern winters, point that way.
The Cult of Calamitous Climate is riding for a brutal fall if the weather patterns turn unmistakably cool.
Riding high on Belief,Arrogance,Authority and Smug self satisfaction, these people have been impervious to reason or logic.
For “our good” we have been abused, robbed and commanded.
I think of CAGW as an intelligence test, the internet never forgets.
And as these people have behaved like thugs, I have no problem treating them as they have advocated for all of us
And the crime is pervasive, ideology always runs cover for thieves and fools.
The big Green Machine has enabled insiders to make out like… BANDITS.
Using force of government to rob the many for the exclusive benefit of the few.
Leaving the sacred environment worse off in almost every way.
The result is corruption runs rampant through out all agencies of our institutions, Kleptocracy is now the norm.
If we turn to retributive justice, feeding the fools and their bandit comrades to the Polar Bears, would be just.
Ironically Government can barely beat mediocracy. That is with iron discipline, rigid rules and a watchful taxpayer.
Even then the very best the organization can achieve is just barely adequate.
Yet inside the structure, these 3rd rate parasites, constantly insist that they are here to help us.If only they had more control over us.
Yet never has these institutions come close to producing what free men do in their spare time.
This whole sorry episode will help cure the current generation of paying taxes.
How can you support an institution that has lied to you from your birth.
No global warming for near 18 years and counting….
All your temperature data are belong to us.
Every thing noted in all the wise posts above have been standard operating procedure in every 3rd world country for generations. Because the citizens are uneducated and brainwashed to believe what the elite wants them to believe. Judging by how our citizens are now being screwed and still begging for more, I would suggest that the dumbing down in our own education system and pushed hard by the UN is bearing fruit for those that want future generations of compliant sheep. No different than the the rise and fall of every great empire in the past. That’s why they no longer teach history. The proof is in the re election of Wynne, Obama and the potential election of Trudeau. This is the age of bread and circus. The race to the bottom is on. OOooh look………….it’s Justin Bieber……
As it grows older and larger, almost any bureaucracy becomes more focused on preserving the bureaucracy than the reason it was created. As people are promoted beyond their level of competence, corruption becomes more prevalent. That’s the system that runs the world today.