this post was submitted on 06 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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The little-known, massive advantage that renewables hold over coal. (slrpnk.net)
submitted 8 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[โ€“] hemko@lemmy.dbzer0.com 2 points 8 months ago (1 children)

It looks also like this graph is completely ignoring the fact that the excess heat is actually used to heat up homes (at least in Finland), making the process of burning coal way more efficient.

That said, renewables are obviously still better on the climate, and should be heavily invested to.

[โ€“] silence7@slrpnk.net 3 points 8 months ago

I can say that in the US, such use of waste heat is fairly uncommon