before GHCN adjustments
after GHCN adjustments
after GISS adjustments to the adjustments
today's GISS graph (which will soon disappear).
these massive adjustments are happening all over the world. Reykjavik is a well documented site with no need for phantom 'homgenization' by unaccountable computer programs. if they can do this to a well established western civilization country, what can they do to poorly measured and documented countries?
here is the amount of extra 'adjustment' to GISS land temps just in the last ten years.
think about that the next time someone tells you that this year was the 'hottest evah!' by one or two hundredths of a degree on one of the global temp datasets.