Category Archives: Climate Change

Changing temperature anomaly baselines

I wanted to check whether the choice of baseline can affect the calculation of  global temperature anomalies from station data. Each temperature index (GISS, Berkeley, CRU) uses different normalisation periods for calculating weather station temperature anomalies. I was surprised to … Continue reading

Posted in AGW | Tagged , | 17 Comments

How does temperature depend on CO2?

Robert Rohde has produced a very nice animation of global temperatures as a function of CO2 levels in the atmosphere. Of course it is designed for public relations purposes in order to show increasing CO2 causes warming.  He even uses … Continue reading

Posted in AGW, Climate Change, climate science | Tagged , | 39 Comments

2018 Temperature Comparisons

The US Government shutdown delayed the release of the December GHCN station data. This also, perhaps surprisingly, also delayed the the Met Office/CRU results. So just how independent are they one from each other? Here is a comparison of the … Continue reading

Posted in AGW, Climate Change, climate science, NASA, NOAA, UK Met Office | Tagged | 5 Comments