USHCN raw monthly data (which is not really raw and already tampered) shows a long term cooling trend in the US.
The USHCN V1 adjustments just weren’t getting the job done, and weren’t able to keep up with the cooling trend
So they invented V2, with a spectacular hockey stick of adjustments – used to create the false impression that the US was warming.
The next graph shows both sets of adjustments on the same scale. It looks like someone forgot to double check their homework before they turned it in, because V2 and V1 adjustments don’t even vaguely resemble each other. They are supposed to be almost the same the algorithms. Close enough for government work though.
The next graph shows the impressive hockey stick of new data tampering they piled on to USHCN V2 – on top of the USHCN V1 tampering.
Climate experts say that this is all golden, and that I should shut up – because I just don’t know what I am talking about.