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Tag Archives: GHCN
Homogenisation of temperature data
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
GHCNV4 September Temperature is either 0.93C or 0.70C
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
GHCN V4
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