this post was submitted on 02 Sep 2024
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Climate - truthful information about climate, related activism and politics.

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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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[–] [email protected] 11 points 2 months ago* (last edited 2 months ago) (13 children)

The problem is we set a target of "net zero" by <in 2 decades>. So naturally companies will do it the cheapest way that requires the least changes to their business.

We don't need "net zero" we need "as closest to total zero as possible".

[–] [email protected] 2 points 2 months ago (9 children)

If the carbon is properly sequestered after capture, and the energy use is accounted for in emissions, wouldn't net zero be just as good as zero? It's almost always going to be way more expensive to take the carbon back out of the atmosphere than to not emit it in the first place, so I'd think you'd get mostly the same effect.

[–] [email protected] 7 points 2 months ago* (last edited 2 months ago) (6 children)

"net zero" refers to continuing to emit greenhouse gases and fixing the problem some other way. Carbon capture, carbon credits, whatever.

Zero means actually stopping the emissions in the first place.

Except that net zero is mostly being used as an excuse to keep going with your business, emitting away while paying lip service to the idea of reducing emissions in ways that may or may not actually offset the continued emissions.

[–] [email protected] 5 points 2 months ago

The first thing we need to do is make carbon credits illegal all around the world.

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