Some readers complained that GISS uses a different baseline (1851-1980) than NCDC (1901-2000) – so my blink comparator (below) wasn’t fair.
Here is the same thing with GISS using a 1901-2000 baseline. A little better, but GISS is still far off the mark.
Below shows GISS cherry-picked baseline (1951-1980) vs GISS with a 1901-2000 baseline.
Joe Bastardi writes :
Hansen is comparing his data to 1951 to 1980 data, pre satellite, COLD PDO 90% OF THE TIME, Cold AMO 80% . He has free reign to adjust pre satellite temps DOWN and can not monkey with the 30 year record from 1980 on. Simple solution, keep adjusting down the colder period. No sweat.
Is is obviously despicable and non applicable for three reasons 1) The NATURAL DRIVERS which he wants us to ignore were stacked for cold. 2) The way of measuring temperatures then is different from now 3) He is simply doing whatever he wants and has license to get away with it, since he can reasonably argue it is “accepted” data
If he wants to truly compare, start the clock running in 1978 when satellites came on and watch it as the natural cycles change. But in his world of win at all costs, why would he do that when he has a herd of sheep following him that wish everyone else to become sheep with them.
In fact, that is what this whole thing comes down too, a few sheep herders leading unsuspecting sheep to the slaughter. Hansen, for whatever you wish to say about him, certainly uses his sheep-dogs ( things like this data) well to drive home his point. You gotta give him that.
Read the date its being compared too, and understand what they are doing with that period ( making it colder) and you have how he does it. And gets away with it