this post was submitted on 27 Jul 2023
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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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Why sucking CO2 out of the atmosphere can’t undo all the effects of climate change (www.theverge.com)
submitted 1 year ago by silence7@slrpnk.net to c/climate@slrpnk.net
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The paper is here

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[–] Rhaedas@kbin.social 10 points 1 year ago

No, because of entropy. We got the energy out by burning and letting carbon free, but to reverse that process takes a lot more energy than we got out. And the energy used would need to be zero carbon.