this post was submitted on 03 Mar 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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Energy efficiency of active travel (walking, cycling, ebike) compared to an electric car (slrpnk.net)
submitted 8 months ago* (last edited 8 months ago) by [email protected] to c/[email protected]
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[–] [email protected] 0 points 8 months ago (1 children)

In this graph a bus would be a lot worse than a far given the massive size, aerodynamic brick wall, and constant stops.

[–] [email protected] 4 points 8 months ago (1 children)

Yeah but you have to divide the footprint by the average number of travelers.

[–] [email protected] 1 points 8 months ago

Which in non city environments with high frequency is often only a handful to a dozen at most. Not that it matters, as this graph doesn’t show or or try to compare per person, only calories per vehicle mile.