this post was submitted on 01 Dec 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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[–] mehdi_benadel@lemmy.balamb.fr 16 points 3 weeks ago

There could be a good opportunity to try and re plant the Sahara forests too, with climate changing. They say Sahara was green when the temperature was a bit higher around 10,000+ years ago, it supposedly dried out because of west winds bringing sand and pushing clouds away.

[–] aasatru@kbin.earth 9 points 3 weeks ago (1 children)

Would this be a scalable solution to help mitigate climate change and to give room to wildlife?

It's fantastic that they can produce food, and I can see why also for political reasons food aid would be the first priority here. But it seems strange to me that companies never talk about this when they want to greenwash - replacing the Sahara with foreat seems like a potential game changer, and it seems to be something where money can really make an impact.

[–] CheeseNoodle@lemmy.world 11 points 3 weeks ago

iirc there are plenty of food forest designs that result in higher yields and better soil quality than modern industrial agriculture with less or no need for chemicals past a certain point... However they're also much more labour intensive, you basically need to plant and pick everything by hand because the whole setup is way too complicated to just pull a plow through. Perhaps one day we could do it with some kind of mass drone based approach but right now its not feasable at scale.

[–] Gradually_Adjusting@lemmy.world 7 points 3 weeks ago

I really love the idea. I hope it works out beautifully.