Tag Archives: GHCN

Homogenisation of temperature data

Posted on March 11, 2022 by Clive Best

How accurate is the pair-wise homogenisation algorithm applied to GHCN land temperature measurements and the instrumentation corrections made to sea surface temperatures? Long term station measurements are affected  by a station’s physical relocation, by environmental changes (urban development)  and by … Continue reading →

Posted in AGW, Hadley, NOAA, Uncategorized | Tagged | 19 Comments

GHCNV4 September Temperature is either 0.93C or 0.70C

Posted on October 16, 2020 by Clive Best

My calculation uses  a 3D integration of GHCNV4 and HadSST3  temperature data.  If I use GHCN V4C (corrected data) I get 0.93C for September,  whereas if instead I use the uncorrected V4U I get 0.70C. In the first case 2020 … Continue reading →

Posted in climate science | Tagged , | 7 Comments

GHCN V4

Posted on September 24, 2020 by Clive Best

Each monthly update of V4C (corrected)  changes past results as well as adding the new monthly temperatures. This is due to their homogenisation algorithm.  I had already noticed that V4 gave warmer results than V3 but found that the uncorrected … Continue reading →

Posted in AGW, climate science, NOAA | Tagged | 1 Comment