this post was submitted on 10 Dec 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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Interactive: The pathways to meeting the Paris Agreement’s 1.5C limit (interactive.carbonbrief.org)
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[–] riodoro1@lemmy.world 2 points 2 years ago (1 children)

Haha, 2100. Good fucking luck!

[–] benjhm@sopuli.xyz 1 points 2 years ago

2100 is within lifetime of kids today. You need to go to at least 2150 to stabilise temperature, and 2300 to have a chance of stabilising sea-level rise. Lifetime of CO2 in atmosphere is over 100 years. Demographic inertia works on similar timescale. For such reasons my interactive model goes to 2300. IPCC made projections to 2100 since 1990, stuck with this tradition due lack political consensus. Laws of physics not necessarily convenient for mass human psychology.