The Global Warming Challenge

Evidence-based forecasting for climate change

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May 2017: Global temperature ticks up for 2 months running

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A good month for Mr Gore with UAH’s global average temperature figure almost on the Gore/IPCC red warming line after two months in a row of increasing temperatures. This is an uncommon event: during the 113 months of the bet, so far, temperatures have increased for two months running only 20% of the time.

Runs of temperature increases or decreases are the exception. Three months of increasing temperatures has only occurred for 6% of the bet months, so an increase again in June would be even more unusual. By contrast, three months running of falling temperatures has occurred for 9% of the 113 bet month.

Despite the warmer month, Mr Gore’s cumulative absolute forecast error remains nearly 22% greater than the error from Professor Armstrong’s Green-Armstrong-Soon no change forecast.

Written by admin

June 7th, 2017 at 12:43 pm