this post was submitted on 15 Apr 2026
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Climate

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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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The paper is here

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[–] grue@lemmy.world 35 points 1 day ago (3 children)

Every few years there's a headline like this.

...

Not because people are dredging up old news, but because the collapse estimate keeps getting revised to be sooner.

[–] silence7@slrpnk.net 13 points 1 day ago (2 children)

Not sooner so much as more likely. We're into the 40% to 50% range now

[–] grue@lemmy.world 13 points 1 day ago (1 children)

It's kinda the same thing. The curve of probability over time is shifting closer to the present (faster than we approach it through the normal passage of time).

[–] benjirenji@slrpnk.net 1 points 1 day ago

And the model gets refined making the predictions more accurate and reliable.