this post was submitted on 18 Feb 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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Saturation point: Australia’s best known carbon-neutral farm can no longer offset its emissions | Trees and soil on Jigsaw Farms in western Victoria have now passed peak sequestration (www.theguardian.com)
submitted 9 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] DigitalNirvana@lemm.ee 4 points 9 months ago (1 children)

I’ve read some things about old growth forests actually increasing sequestration, compared to younger trees. This is the first I’ve heard of reaching saturation, dang. I mean I figured soil just keeps getting deeper, alas, it appears to not be so easy. Made me think, heck they should adopt these practices on the ‘land next over’. Tho’ I think those studies were in the PacificNW North American continent, it seems the same principles should apply, tho’ not necessarily the same species. Tho’ only a double handful of species are as longevitous as Sequoias. Ah, took a sec, here’s Jared Farmer : Thinking About Time with Trees https://podcasts.apple.com/us/podcast/long-now-seminars-about-long-term-thinking/id186908455?i=1000639485066

[–] exocrinous@lemm.ee 1 points 9 months ago

Worms and fungi burn the carbon in the soil.