As many longtime readers of WUWT know, what brought this website to fame was the original surfacestations project done in 2007, 2008, and 2009. The exposure of the shoddy state of NOAA’s Cooperative Observer Network, and specifically its subset network the U.S. Historical Climatological Network (USHCN) caused quite a bit of consternation and embarrasment to NOAA as well as other agencies using the data such as NASA GISS, CRU in Britain, and others.
Since the publication of my How Not to Measure Temperature series and the subsequent booklet, NOAA has since disbanded the USHCN and no longer uses it in their National Temperature Index:
Please note: National USHCN monthly temperature updates have been discontinued. The official CONUS temperature record is now based upon nClimDiv. USHCN data for January 1895 to August 2012 will remain available for historical comparison.
https://www.ncei.noaa.gov/access/monitoring/national-temperature-index/https://wattsupwiththat.com/2022/05/07/participate-in-the-surfacestations-project-version-2/
