Change to Raw USHCN Value after Homogenization Estimate

Approximately 92% (or 99%) of USHCN surface temperature data consists of estimated values

An analysis of the U.S. Historical Climatological Network (USHCN) shows that only about 8%-1% (depending on the stage of processing) of the data survives in the climate record as unaltered/estimated data. Guest essay by John Goetz A previous post showed that the adjustment models applied to the GHCN data produce estimated values for  approximately 66% of…

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NOAA Releases New Pause-Buster Global Surface Temperature Data and Immediately Claims Record-High Temps for May 2015 – What a Surprise!

Guest Post by Bob Tisdale NOAA recently published their State of the Climate Report for May 2015. Under the heading of Global Summary Information, they note: Note: With this report and data release, the National Centers for Environmental Information is transitioning to improved versions of its global land (GHCN-M version 3.3.0) and ocean (ERSST version…