this post was submitted on 26 Aug 2024
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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.

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A Small Electric SUV Produces 52% Fewer Life Cycle Greenhouse Gas Emissions than a Comparable Gasoline Vehicle (www.energy.gov)
submitted 2 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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The emissions from the EV are largely because we've not yet gotten fossil fuels out of electric generation.

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[โ€“] someguy3@lemmy.world 8 points 2 months ago* (last edited 2 months ago) (1 children)

Lifetime vehicle miles traveled is 183,363 miles, and the assumed grid mix is the 2022 U.S. average in R&D GREET 2023.

EVs vehicle should last longer than that (though the battery will require replacement) so I think the EV production part will shrink.

Notice they break down the production and distribution of gas (not including the burning). Interesting.

[โ€“] silence7@slrpnk.net 4 points 2 months ago

Yeah, refining some oil deposits involves absolutely huge inputs of methane to turn heavy oil into something that's suitable for use in motor vehicles.