NOAA’s National Climatic Data center caught cooling the past – modern processed records don’t match paper records
'The average state temp records used in current trends analysis by NCDC do not reflect actual published records of such as they appeared in Monthly Weather Reviews and Climatological Data Summaries of years past...looked at entire years of data from 1920s & 1930s for numerous different states & found that this 'cooling' of old data was fairly consistent across the board...Is this purposeful mendacity, or just another example of confirmation bias at work?'