Changes? Well hardly. Apparently the shocking “dog bites man” story of minuscule changes in GISS global anomaly data is making the rounds on denier sites.
A poster here embedded the copy/pasted accusation in an off topic thread, it goes thus:
Looks like Hansen/GISS is up to their old tricks;
Here are the June global temperature anomaly comparisons:
GISS is way above the other two, but it does not end there apparently 2007 has now replaced 1998 as the second hottest year on record this was achieved not by rigorous scientific study and evaluation but by sleight of hand an the part of GISS.
This has been achieved by lowering the 1998 J-D average temperature anomaly to 0.56 , and raising the 2007 J-D average temperature anomaly to 0.57. Last month they were viceversa.
This of course would give the impression that global temps are ever increasing keeping Hansen et al in a job. One day people like Hansen will be called to account for their actions, i hope i live long enough to see that day.
how can GISS change the temp of a year, 11 years after the
fact. Also how can GISS have June anomoly at 0.63 a whole 0.55 above
RSS and .629 above UAH? Surely GISS must be in error.
Firstly about the insinuation of fraud in the name of giving of an impression of greater warming. Here’s the current temperature record from GISS’s website:
Now here’s a close up of the last few years before and after the new adjustment:
Shocking. (Yes, they are identical pictures did anyone expect a 0.01oC to show?). So, conspiracy theorists would have us believe NASA scientists are manipulating the data in a way that does not show, not telling anyone about and…what exactly? This is supposed to restore NASA GISS’s slashed funding?
But why would they change the temperature reading of a year eleven years after the fact? Let’s not forget that this record is not taken from some giant global thermometer, the reading recorded year by year, written on a piece of paper and then put in a drawer. This is a complicated reconstruction made from thousands of data sources, subject to active research and the algorithms that turn it into a table of anomalies is constantly being scrutinized and refined. Why would anyone expect that it would not change as improvements are made?
One of the other questions was why is GISS so much higher. Well, I have not verified this claim, this may be an apples to oranges comparison, preliminary numbers, incomplete data filled in with estimates, I have no idea. But one thing to remember about the GISS record is that it is the only one that includes the arctic, which is one of the fastest warming regions in the world.
I wonder how our poster knows there was no rigorous study involved, but rather it is “sleight of hand”? He doesn’t, of course. It is pure paranoia (if he believes it himself). I recall a lot of yelling when NASA adjusted a temperature down.