this post was submitted on 29 Dec 2024
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Climate - truthful information about climate, related activism and politics.

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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

Recommended actions to cut greenhouse gas emissions in the near future:

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We've barely managed to make a tiny dent (lemmy.blahaj.zone)
submitted 1 week ago by FundMECFSResearch@lemmy.blahaj.zone to c/climate@slrpnk.net
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[โ€“] starman2112@sh.itjust.works 23 points 1 week ago (2 children)

Has there ever been a period in Earth's history where CO2 concentration in the atmosphere changed this quickly without being accompanied by mass extinctions?

[โ€“] Linedotdatdot@lemmynsfw.com 4 points 6 days ago

Boy, got awful quiet all of a sudden, huh? ๐Ÿคฃ๐Ÿ˜‚ Bro is over there desperately trying to convince himself that nah, he could totally live on Venus as long as he only measures the surface temperature as an average over 40 billion years, give or take

[โ€“] ZMoney@lemmy.world 1 points 6 days ago

The Paleocene-Eocene thermal maximum is actually a great analogue for what we're currently experiencing. Huge increase in global temperature over a relatively short period of time, probably due to runaway methane release. It went back to normal within a few hundred thousand years because of increased planktonic CO2 sequestration in the expanded tropical zone.