this post was submitted on 03 Apr 2025
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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.

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With respect to nuclear energy, in what ways will it help alleviate the climate crisis and where will it not? (lemmy.dbzer0.com)
submitted 3 days ago by SpiceDealer@lemmy.dbzer0.com to c/climate@slrpnk.net
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Nuclear always comes up when discussing the energy transition but renewables seem to be a much more popular consideration. Can nuclear energy help us towards a greener future or is it a long dead dream?

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[–] houseofleft@slrpnk.net 2 points 3 days ago

I think a nuclear future is definitely greener than our gas, oil and coal based present. But wouldn't a renewable energy future be much, much better than either?

I've heard the argument that nuclear can provide a consistent base, which I suppose is true. But you need a way to flex the remaining renewables you have still, since nuclear can't turn up and down as easily as fossil fuels. Which to me says, nuclear + renewables requires the energy-flexing mechanisms that would also make pure renewable possible.

So my take is, I think it might help reduce warming somewhat, but really we should be aiming for 100% renewables.