this post was submitted on 01 Apr 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.

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I think this makes it really clear how most of the carbon capture proposals are aimed at influencing public opinion towards allowing ongoing extraction and burning, rather than actually doing much of anything.

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[–] zout@fedia.io 7 points 6 months ago (1 children)

I've worked in the development of a CCS plant last year. What I've learnt is that it is very costly, takes a lot of energy and there's not enough economic drivers today for companies to invest in this.

[–] admiralteal@kbin.social 3 points 6 months ago

This already happened with flyash and other coal byproducts. The law pointed out the shit was poison and had to be mitigated. That mitigation made coal a technology so worthless that utilities with purchase agreements were buying out coal plants just to shut them down.

Even under the huge incentives of the IRA, CCS is just never going to happen by market forces. It's nearly a thermodynamics violation to make it work.

Which is another way of saying that the only reason fossil fuels are economical at all is because the GHG producers are not paying for their negative externalities. That they're being massively, massively, hugely subsidized by the rest of us. It's another way of saying something anyone at all interested in the climate already knows: we cannot afford NOT switching all energy production to renewables as fast as possible.

Time to admit that CO2, on the horizon of time, is that bad.

[–] Minotaur@lemm.ee 5 points 6 months ago (1 children)

Kind of a headache to enforce this kind of stuff when natural resource production is essentially entirely private. Why would they make any of these costly changes when they can just bank that, at some point in the next 30 years or whatever, a republican will probably get elected who will free them of the obligation?

[–] perviouslyiner@lemmy.world 2 points 6 months ago

It's in Hampshire - 'Republican' means something entirely different here, and they already have a conservative government that likes to ignore pollution.

[–] Rentlar@lemmy.ca 5 points 6 months ago
[–] uberdroog@lemmy.world 3 points 6 months ago

In other news, a big corporation lies to expand profits and the government for and by the people is too broken to address it.