this post was submitted on 08 Oct 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.

Recommended actions to cut greenhouse gas emissions in the near future:

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Study shows EV owners have bigger carbon footprint than average because they are wealthier (phys.org)
submitted 1 month ago by [email protected] to c/[email protected]
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Maybe EVs are not a comprehensive climate solution??

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[–] [email protected] 4 points 1 month ago (2 children)

Ok even if it does shift it, shouldn't big power plants be way more efficient and clean than hundreds of thousands of little engines?

[–] [email protected] 1 points 1 month ago

You also have to account for transmission losses and losses in the battery and at every conversion along the way. But also things like regenerative breaking help make electric more efficient as well. It would not surprise me though even with all that if electric was still more efficient than ICE even if the generation was completely fossil fuel based. Just pointing out that it is not just about the efficiency of the generation of power.

[–] [email protected] 0 points 1 month ago

As an argument for efficiency: If you drive a truck that drags an EV behind it (thus charging the EV), and then you drive the EV, you will get more total range than if you just drove the truck by itself.

That’s just how much more efficient EV designs are than traditional ICE vehicles.