michaelemann.bsky.social
Scientist/Author/Speaker; Presidential Distinguished Prof/Director Center for Science, Sustainability & the Media/Vice Provost for Climate, U. Penn; National Academy of Sciences; Royal Society; Tyler Prize
2,906 posts
87,853 followers
419 following
Prolific Poster
Conversation Starter
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Indeed David. Receipts: bsky.app/profile/mich...
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Indeed David. Receipts: bsky.app/profile/mich...
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When @michaelemann.bsky.social and I were separately selected for Fulbright Scholarships a few years ago to go to Australia and France, respectively, the Fulbright board was stuffed with Trump appointees including Hope Hicks and Sarah Huckabee Sanders. They vetoed our climate-related applications.
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Simple rules unfortunately aren't applicable. It's quite complicated because one has to account for both terrestrial and ocean carbon cycle dynamics that can be quite complicated. IPCC AR6 is a good place to start: www.ipcc.ch/report/ar6/w...
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The proportion isn't fixed. At some point we reduce emissions below the background geological uptake and net emissions reach zero.
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The 50% is a proportionality not an absolute number. If emissions today are ~40 Gt/year, uptake is 20 Gt/yr. But if we lower emissions by 50% to 20 Gt/yr, then uptake is reduce to 10 Gt/yr. It's Zeno's paradox in another form. We never get to zero net emissions. The good news however is that...
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arghh, did the OP not read the piece. This specifically applies to him:
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Mannsplainers get blocked. Your first warning.
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always a pleasure to collaborate w/ you my friend!
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from the link: "At high levels, the carbon dioxide itself can cause headache, dizziness, nausea and other symptoms. This could occur when exposed to levels above 5,000 ppm for many hours. At even higher levels of CO2 can cause asphyxiationas it replaces oxygen..CO2 poisoning, however, is very rare."
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bsky.app/profile/did:...
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Yep--I did try to explain that!! 🤷♂️
Alas, I don't get to write the headlines (there's an alternative universe where I do! 😆)
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right back at ya!