It is very gratifying to see adjustments of temperature data from surface stations getting some attention again. You could say I started blogging due to that very issue. One of my first posts back in November 2009 was Climate Fast Food (“processed data”). The comparison between the unadjusted and adjusted data for certain stations was shocking:
“If climate change is weather records homogenised, I’d rather have the raw data, as I’m finding the processed kind rather hard to digest.”
Having spent a very long time examining, comparing and mapping station data, the continual changes and new versions of the data made comparisons with previous work challenging. GISS used a new classification method for identifying which stations to adjust; NCDC developed new versions of datasets and pair-wise comparisons. Adjustments seemed to get more and more extreme, but I felt like I was in the Red Queen’s Race (“it takes all the running you can do, to keep in the same place”).
It felt like I was banging my head against a brick wall, so I stopped.