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.

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

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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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[–] avidamoeba@lemmy.ca 34 points 2 months ago (11 children)

This is with the US electricity generation mix. That is a significant amount of gas and coal. In a country with a greener mix the emissions will diverge further.

[–] brianary@startrek.website 3 points 2 months ago (1 children)

In the PNW, we've been all hydropower for generations.

[–] sonori@beehaw.org 2 points 2 months ago

Depends a lot on which company, for instance while Bonneville is like 50% hydro and 6% fossil, Puget Sound Energy and Portland General Electric are currently something like 19% and 25% fossil fuel respectively in this last year and used to be far higher in the recent past.

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