this post was submitted on 07 Dec 2023
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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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This start-up can convert your petrol car into an EV in just 8 hours (www.euronews.com)
submitted 11 months ago by [email protected] to c/[email protected]
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[–] [email protected] 7 points 11 months ago (2 children)

I'm sure there's concern there, but I would like to see how that is offset by the elimination of various extra systems a EV doesn't need like the transmission, drive line, gear boxes, diffs, drive shafts, axles, and the various fluids needed for maintenance and lubricantion of these various systems.

Then there is the mining for the various computer controlled components for these systems but that's probably a wash.

[–] [email protected] 2 points 11 months ago

I don’t know how the numbers work out in a conversion like this, but in new cars EVs take about 1.5 to 2 times the emissions of ICE cars to build including battery. That being said, 91% of a ICE’s emissions are from the gas, not producing the car.

[–] [email protected] 2 points 11 months ago

Wtf. You obviously haven't looked into EVs. There's still all those things, a planetary gear set because you need Regen braking and you need wheel speed at X rpm and need to keep electric engine below... 12000? Rpm, likely lower.

You don't need fluid clutch, you can reduce brakes with Regen braking, but still need emergency braking. There are some designs with two motors for each wheel, but it complicated Regen energy storage.