Is The US surface Temperature Record a Reliable Indicator of Warming?
An official U.S. Climate monitoring station, operated by NOAA/NWS at the University of Arizona, Tucson. It has been closed since it was revealed that it was sited in a hot parking lot.
Pro: Multiple Studies Confirm the Reliability
A recent study conducted by scientists at NOAA’s National Centers for Environmental Information found no evidence that the U.S. temperature trend is inflated by poor siting of stations that comprise the US Historical Climatology Network (USHCN).
NCEI scientists conducted this study to determine the reliability of surface temperature trends over the conterminous U.S. (CONUS) following photographic documentation of poor siting conditions at USHCN stations.
A comparison of trends derived from poorly and well-sited USHCN stations indicates that there is a bias associated with poor exposure sites in the unadjusted USHCN version 2 data (relative to data from good exposure sites). However, this bias is consistent with previous studies documenting the impact of the widespread conversion to electronic sensors in the USHCN during the last 25 years because the majority of poor exposure sites were subject to this instrument change.
Of significant note, the sign of the bias is counterintuitive to photographic documentation of poor exposure because associated instrument changes led to an artificial negative (“cool”) bias in maximum temperatures and only a slight positive (“warm”) bias in minimum temperatures.
https://everythingclimate.com/the-us-surface-temperature-record-is-unreliable/
