Ironwood 2022 version 1921-1997 trends etc

Both NOAA and GISS alter the actual recorded data, and these images show this clearly.

If for some reason you found this page, it's mostly images of data and adjusted data, with little or no commentary.  If for some obscure reason you want to know more, leave a comment.

https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/time-series/2001/tavg/3/3/1921-1997?trend=true&trend_base=100&begtrendyear=1921&endtrendyear=2009

https://data.giss.nasa.gov/gistemp/maps/

https://data.giss.nasa.gov/cgi-bin/gistemp/stdata_show_v4.cgi?id=USC00204104&ds=14&dt=1