The US Blows Hot And Cold
18 hours ago Willis Eschenbach 106 Comments
Guest Post by Willis Eschenbach
I got to thinking about the raw unadjusted temperature station data. Despite the many flaws in individual weather stations making up the US Historical Climate Network (USHCN), as revealed by Anthony Watts’ SurfaceStations project, the USHCN is arguably one of the best country networks. So I thought I’d take a look at what it reveals.
The data is available here, with further information about the dataset here. The page says:
UNITED STATES HISTORICAL CLIMATOLOGY NETWORK (USHCN) Daily Dataset M.J. Menne, C.N. Williams, Jr., and R.S. Vose National Climatic Data Center, National Oceanic and Atmospheric Administration
These files comprise CDIAC’s most current version of USHCN daily data.
These appear to be the raw, unhomogenized, unadjusted daily data files. Works for me. I started by looking at the lengths of the various records.
Figure 1. Lengths of the 1,218 USHCN temperature records. The picture shows a “Stevenson Screen”, the enclosure used to protect the instruments from direct sunlight so that they are measuring actual air temperature.
This is good news. 97.4% of the temperature records are longer than 30 years, and 99.7% are longer than 20 years. So I chose to use them all.
https://wattsupwiththat.com/2023/03/11/the-us-blows-hot-and-cold/
