this post was submitted on 05 Feb 2025
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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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Climate change target of 2C is ‘dead’, says renowned climate scientist (www.theguardian.com)
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[–] Hugin 17 points 1 day ago (2 children)

Sure but didn't we already hit 1.5 C warming? We've barely slowed the amount of CO2 we are dumping in the atmosphere. Even If we stopped all CO2 emissions today we are getting to 2C.

[–] [email protected] 9 points 1 day ago

Unfortunately we haven't even slowed it at all. 2024 was the highest-emission year yet. We're still accelerating

[–] [email protected] 2 points 1 day ago

We had a year of average +1.5C, but the coming years are unlikely to be as hot on account of moving into La Niña. This is bad, but it's not the same as having crossed the +1.5C-threshold, which is measured in a window of multiple years.