How Much Do Temperature Adjustments Affect Global Temperatures?

By Paul Homewood

While we’re on the topic of temperature adjustments, it is worth revisiting this paper from 2012.

http://www.itia.ntua.gr/getfile/1212/2/documents/EGU2012-956-1.pdf

It must be pointed out that it is the old GHCN Version 2 which they are working on, though adjustments such as the Arctic ones did not seem to appear till Version 3.

Nevertheless, what the authors claim is that adjustments account for 0.3C of the 0.7C of warming recorded in the last century. Certainly not the insignificant amounts usually claimed.

One of the points they make is that corrections may introduce bigger errors than the errors they try to remove.

They conclude:

http://www.itia.ntua.gr/getfile/1212/1/documents/2012EGU_homogenization_1.pdf