GHCN V3 temperature data errors spotted within a day of release

From the Inconvenient Sceptic, word that the new Global Historical Climatological Network (GHCN) Version 3 may not have significant quality control. He writes: I have been looking at tweaking the blended temperature set that I have been using. My intent has been to replace the Hadley data with the NCDC data (Global, Land & Sea).…

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Comparing GHCN V1 and V3

Much Ado About Very Little Guest post by Zeke Hausfather and Steve Mosher E.M. Smith has claimed (see full post here: Summary Report on v1 vs v3 GHCN ) to find numerous differences between GHCN version 1 and version 3, differences that, in his words, constitute “a degree of shift of the input data of…

How not to measure temperature in the GHCN, part 1

Yes, it’s back. Dr. Roger Pielke Sr.  and I have started looking at the GHCN to document the siting quality of surface stations that measure climate in the Global Historical Climatological Network (GHCN), the darling of NCDC’s Dr. Thomas Peterson who has recently added another level of processing to the mix. I’ll be offering some…

Calculating global temperature anomaly

By Nick Stokes, There is much criticism here of the estimates of global surface temperature anomaly provided by the majors – GISS, NOAA and HADCRUT. I try to answer these specifically, but also point out that the source data is readily available, and it is not too difficult to do your own calculation. I point…

Hothouse claims from ‘Trajectories of the Earth System in the Anthropocene’ are in a virtual world, not the real world

From the “Tales of the Adjustocene” department. Guest essay by Albert Parker A recent paper Trajectories of the Earth System in the Anthropocene (Ref. [1] below) claims that even if the CO2 emission reductions called for in the Paris Agreement are met, our Earth may still enter what they call “Hothouse Earth” conditions, a long-term stabilization…