this post was submitted on 14 Sep 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 Atmosphere Just Set a Water Vapor Record | More water vapor means more rocket fuel for extreme rain — so this record is not good news (www.theclimatebrink.com)
submitted 14 hours ago by silence7@slrpnk.net to c/climate@slrpnk.net
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it is unimaginable that any month in the last few thousand years, maybe 100,000 years, has more PWAT in the atmosphere than August 2026. We are, as the proverb says, living in interesting times.

I'll note that water vapor, while a greenhouse gas, cycles out of the atmosphere quite quickly, making the amount present dependent on temperature, and hence the concentration of the long-lived greenhouse gases. It's a well-established feedback mechanism

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[–] kibblebits@quokk.au 2 points 14 hours ago

So stop using rocket fuel.