"initial measurement errors have been corrected"
Anytime I hear weasel words like this I'm reminded of the old saying about torturing the evidence until it confesses.
One of the oldest [Liberal] tricks in the book is to take the opposite side, then slowly manipulate the "facts" until the opposition "sees it your way" This is exactly what I see going on right here. Obvious natural processes and historical facts are slowly and inexorably being "adjusted" and manipulated to bring the "naysayers" back on to the reservation, as it were.
The opposer (former global warming skeptic) explains a series of 'Epiphanies" in the process if becoming "right minded" and drags as many gullible spineless skeptics back on to the farm with them.