this post was submitted on 18 Aug 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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Sources of California greenhouse gas emissions (slrpnk.net)
submitted 3 months ago by [email protected] to c/[email protected]
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From this report

I'll note that California is a bit unusual, having imposed energy efficiency standards on buildings decades ago (much of the US didn't) and having actively taken steps to substitute solar, wind, and storage for fossil-fuel based electric generation

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[–] anticonnor 5 points 2 months ago

Yeah, this report is designed with a transportation agenda in mind, so the graph only shows a select set of emission sources to make the tailpipe emissions look as bad as possible. Add in all other sources of emissions and the graph doesn't look quite as impressive for the point they're trying to make.

Figure 1: In the 2019 statewide greenhouse gas emissions inventory, car tailpipes accounted for 119 MMTCO2e — roughly 28% of California’s overall emissions, and more than the emissions from the entire buildings sector and electricity sector combined.