The Global Warming Challenge

Evidence-based forecasting for climate change

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Archive for March, 2017

February 2017 global average temperature gives Mr Gore’s chances a lift

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After 2 months that saw wins for Professor Armstrong’s bet on no long term change in global mean temperatures, the UAH estimate for February came in at 0.35°C. That was 0.1°C cooler than Mr Gore’s “bet” on the IPCC 3°C per century warming scenario, but 0.2°C warmer than Professor Armstrong’s forecast.

While Mr Gore’s bet had a run of wins recently—from October 2015 to November 2016—Professor Armstrong’s scientific no-change forecast has won 80 of the 110 months of the bet so far. So, while Mr Gore’s favoured dangerous manmade global warming scenario is looking more credible than it has done for almost five years, the scenario’s cumulative absolute forecast error to date is still more than 22% larger than that of the no-change forecast.

The Climate Bet now has only 10 months of its 10 year term to run.

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March 6th, 2017 at 11:53 am