this post was submitted on 31 Jan 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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Revisiting the hot model problem | Despite a hot 2023 and the recent Hansen et al paper, there is still reason to doubt very high climate sensitivity models (www.theclimatebrink.com)
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[–] sonori@beehaw.org 2 points 2 years ago

Ya, her rejection of dark matter also confused me, becuse it’s not a theory but rather a set of images and observations. There are some theories about dark matter like MOND and WIMPs but dark matter itslef isn’t a theory that can be wrong, as unless our telescopes are just making up data, we can pretty clearly see that some galaxies have lots more gravity then they have things like stars and matter, while others nearly exactly fit the equations. While we still can’t say exactly what it is, hence the name, we can be pretty confident that we’re making maps of something.