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)
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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€“] Uranium3006@kbin.social 10 points 1 year ago (1 children)

At this point we all know we gotta pull all that extra co2 back out of the atmosphere and store it long term.

[โ€“] chaogomu@kbin.social 11 points 1 year ago

Not only do we need to pull co2 out of the atmosphere, but we also likely have to start spraying ocean water into the upper atmosphere to help keep things halfway stable.

Maybe start doing tests on ocean iron seeding as well to promote open ocean algae blooms. (there's been some research, but it was done in about the single worst way possible)

The point is, we've been accidentally geoengineering the planet for centuries, we need to stop that, and do it with intention.