this post was submitted on 02 Dec 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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Stop emissions, stop warming: A climate reality check | Why future warming isn't as "locked in" as you might think (www.theclimatebrink.com)
submitted 3 weeks ago by silence7 to c/climate
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[–] Rentlar@lemmy.ca 1 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

From what I have observed, the jury is still out on whether we are overestimating or underestimating impacts of feedback loops, I'm sure this author knows about them but they shouldn't be ignored when talking about it for the sole purpose of painting a rosy but unrealistic picture towards a solution.

As my specialty is electrical and not climatology, I'm just hoping to avoid the equivalent of "thermal runaway". If the planet loses its magic smoke we have no replacement on order. Our window of opportunity to get things under control is still open and there are more technical solutions and a broader range of support for implementing emissions reductions than ever before. There are also countless barriers and obstacles.

[–] silence7 2 points 3 weeks ago

It depends intensely on what you mean by "thermal runaway" — we can absolutely create a world which will support a much smaller population; we can't really create a world where we boil off the oceans like Venus.