this post was submitted on 27 Jul 2024
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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.

Recommended actions to cut greenhouse gas emissions in the near future:

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We Just Lived Through Two of the Hottest Days Ever. Does Anyone Care? (www.rollingstone.com)
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[–] silence7@slrpnk.net 4 points 4 months ago* (last edited 4 months ago) (1 children)

Emissions have been falling in the US and EU since ~2005 or so, and look to be about to start falling in China, which means that they'll be falling worldwide after this year.

But...they'll likely be falling slowly, rather than rapidly, which is a problem.

[–] hobovision@lemm.ee 1 points 4 months ago (1 children)

That's a really hopeful reading of that chart. What I see in that chart is that even a year or two of falling emissions could quickly be wiped away. Just look at 2022.

[–] silence7@slrpnk.net 1 points 4 months ago

It's a bit more than that; there are policies in place which make Chinese emissions likely to slowly drop from here on out