Steve McIntyre complains about the large adjustments made by NASA GISS to some of the data series. In fact, he displays graphs showing some of those adjustments, the largest of which are for Puerto Maldon, which has more than a 3-degree adjustment between 1958 and 1988. As usual, a question is asked which includes a none-too-subtle (in fact rather obvious) implication of deliberate misdeeds by NASA GISS:
"The annual variation in monthly temperatures is only a few degrees. Given this very placid temperature variation, how can Hansen simply assume that something happened that threw the measurements off by 3 deg C?"
A better question is how can Steve McIntyre simply ASSUME that James Hansen would “simply assumeâ€�
In reality, NASA simply used the nearby rural stations to correct for the bias in the urban station (Puerto Maldon).
http://tamino.files.wordpress.com/2008/02/3city1yrtrend.jpg
http://tamino.wordpress.com/2008/02/25/one-of-these-things-is-not-like-the-others/
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