this post was submitted on 09 Jul 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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[โ€“] millie 4 points 4 months ago* (last edited 4 months ago) (1 children)

Heat doesn't go up. Hot air rises because it's less dense than cold air. You know what's less dense than hot air though? Vacuum. That's a good thing, though, because we don't want to be hemorrhaging atmosphere.

Even if we could build a physical heat sink sticking out of the atmosphere somehow, it would be less protected from solar radiation than anything inside the atmosphere, so if it were facing the sun it probably wouldn't work.

Even if we had the resources and like, enough readily available materials on Earth to make some sort of retractable heat sink sticking out of the night-side of the planet, it'd probably require more energy consumption to create than would be worth it.

Probably the best way to cool things down is to quit burning so much shit and quit knocking forests down.

[โ€“] Tronn4@lemmy.world -2 points 4 months ago

Are you assuming heats gender? /s