this post was submitted on 22 Jan 2025
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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.

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Opinion | Trump’s Paris Withdrawal Executive Order Is Grimmer This Time (www.nytimes.com)
submitted 3 weeks ago by [email protected] to c/[email protected]
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[–] [email protected] 5 points 3 weeks ago* (last edited 3 weeks ago)

Sure it will, there's a lot of inertia and feedbacks in the system, some kicking in recently although there's nothing physically special about 1.5^o^C. Also, as well as CO~2~, emissions of CH~4~ rise fast, while those of SO~x~ fall. My point is rather that people (especially anglophones) tend to over-estimate the importance of USA in world affairs. What matters is that the rest of the world gets on with transitions.