this post was submitted on 20 Sep 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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How we get to zero emissions matters, not just the date we get there (slrpnk.net)
submitted 1 year ago* (last edited 1 year ago) by silence7@slrpnk.net to c/climate@slrpnk.net
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Cumulative emissions matter because CO2 accumulates in the atmosphere, and is removed fairly slowly by natural processes

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[โ€“] sinkingship@mander.xyz 15 points 1 year ago (1 children)

The title kinda implies we get to net zero at all.

Don't get me wrong, I don't doubt that one day on Earth there will be net zero carbon emissions. But will it be because humanity plans to and will work on it or because we screwed things up so badly.

I don't have a good feeling about that.

[โ€“] Gloomy@mander.xyz 6 points 1 year ago

Eventually there will be a global simplification. It remains to be seen if this will be by desing or desaster.

This is how a paper i read once put it and those words habe been engraved in my brain ever since.