this post was submitted on 16 Sep 2024
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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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Food is a huge source of methane emissions. Fixing that is no easy feat. (grist.org)
submitted 2 months ago by RvTV95XBeo@sh.itjust.works to c/climate@slrpnk.net
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Methane spends a lot less time in the atmosphere than carbon dioxide; about 20 years after it’s released, most of it will have decayed, while carbon dioxide lingers in the atmosphere for hundreds of years. But methane also generates heat much more readily than carbon dioxide — about 80 times more in its first 20 years in the atmosphere — meaning it contributes significantly towards global warming in the short term. It is good news — sort of — because by the same token, any reductions in methane emissions will have more of an impact on the climate right away.

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[–] RvTV95XBeo@sh.itjust.works 6 points 2 months ago (1 children)

You're absolutely right, but to be fair, it'd probably take a full growing season to swap all of the animal feed farms to human foods - so fixed by this time next year perhaps

Still much quicker than renewables and global electrification.

[–] 14th_cylon@lemm.ee 4 points 2 months ago

so fixed by this time next year perhaps

well sure, tomorrow was slight exaggeration for dramatic effect, but i think we understand each other.