Category Archives: climate science

30 years of IPCC assessment reports – How well have they done?

Over the last 30 years there have been 5 IPCC assessment reports on climate change.  I decided to compare each  warming predictions made at the time of publication to the consequently measured  temperatures. The objective is twofold. Firstly how well … Continue reading

Posted in AGW, Climate Change, climate science, CRU, Hadley, IPCC | Tagged , | 23 Comments

CRUTEM4 is cooler than GHCN-V4

The October 2019 global temperature anomaly that I calculate based on the latest CRUTEM4 station data is 0.15C cooler than that using GHCN-V4 (0.79C as  compared to 0.96C). The temperature series are calculated in exactly the same way and both … Continue reading

Posted in AGW, Climate Change, climate science, CRU, Hadley, NOAA | Tagged | 7 Comments

October temperatures rise 0.18C

October saw a large increase of 0.18C in the global average temperature (anomaly) since September. These results use a spherical triangulation of land (GHCN-V4) and ocean (HadSST3) temperature data with a baseline of 1961-1990. The methodology is described in this … Continue reading

Posted in AGW, Climate Change, climate science, GCM, Hadley, NOAA | 1 Comment