Discover and read the best of Twitter Threads about #methanepavilion
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On @COP26 rest day time to reflect on where we are with the science. First up, #methanepledge. @BBCMoreOrLess fact check needed: Would it save up 0.2C of warming, has methane caused half of global warming to date, is it 84x worse than CO2? bbc.co.uk/news/world-591…
1. Half of global warming? Half right. It's (0.5C) roughly half of NET warming, but misleading as really its 1/3 of GHG warming, and the total GHG warming contribution is countered by aerosol cooling. @IPCC_CH AR6 Fig SPM2 
Methane emission causes ozone pollution, so the 0.5C, is not all due to methane change, but 0.35C is. Emissions also increase ozone and CO2, adding an extra 0.15C. Figure 6.12 AR6 @SophieSzopa, Vaishali Naik, @chrisroadmap
