this post was submitted on 02 Feb 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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Could a Giant Parasol in Outer Space Help Solve the Climate Crisis? Time and money would be better spent on working to reduce greenhouse gas emissions and removing carbon dioxide from the atmosphere (www.nytimes.com)
submitted 9 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] mozz@mbin.grits.dev 50 points 9 months ago (2 children)

I think this is the new phase of the bad-faith propaganda. Promote weird, outlandishly expensive but vaguely-plausible-sounding solutions to get people away from talking about the things we can actually do (but which would lead to someone making less money and so, unacceptable.)

[–] Johanno@feddit.de 16 points 9 months ago

No you don't understand. We just need to build a dyson sphere and we are ser in energy for ever.

This will be cheaper than anything we can do. For only 1$ per kW we can build it eeehm next year.

/s

[–] GreyEyedGhost@lemmy.ca 4 points 9 months ago (1 children)

It's not a bad idea if we had the technology to mass-produce film in the quantity required, the ability to easily and consistently place them where needed, and could maintain the array. None of those are true right now. If they were, it would be viable.

[–] mozz@mbin.grits.dev 2 points 9 months ago

Yeah. If we could do it, someone could run the numbers and find out that it's about ten to a hundred times cheaper to just build a bunch of non-coal power plants, or find and eliminate methane sources, or, hell, I don't know. I'm not an expert. But I definitely know that they're not talking about this because it's the easiest way.