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EVs Help Vehicle Emissions Drop To Historic Low In The U.S. | EVs and PHEVs brought huge climate wins for the transportation sector in 2023. Emissions are down, fuel economy levels are up. (insideevs.com)
submitted 3 weeks ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[-] whithom@discuss.online 0 points 3 weeks ago

Historic drop or historic low. Like, pre-1800s Or fake news?

[-] silence7@slrpnk.net 1 points 3 weeks ago

Historic low (since 1975 when records were first kept) in terms of emissions per mile, for motor vehicles sold in the US in model year 2023.

graph source

this post was submitted on 02 Dec 2024
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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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