this post was submitted on 23 May 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.

Recommended actions to cut greenhouse gas emissions in the near future:

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Big Tech thinks it can plant trees better than everyone else (www.theverge.com)
submitted 5 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] Delta_V@lemmy.world 3 points 5 months ago (1 children)

That might work for a little while, but I suspect there is an upper limit to how many trees a bog can absorb over a given time before it stops behaving like a bog.

[–] cerement@slrpnk.net 2 points 5 months ago (1 children)

hügelkultur → hügelcounty → hügelstate → hügelcountry

[–] Delta_V@lemmy.world 3 points 5 months ago

If the biomass inside hugelkultur garden beds didn't decay, then it would just be a means of water retention. It does decay though, which enriches the soil but also releases CO2.

Hugelkultur can reduce demand for fossil carbon based fertilizer, but IDK if composting trees is economically viable without some level of carbon tax, or even logistically viable for meeting demand at the scale of modern, mechanized agriculture. It would be cool if it were though - paired with machines that run on liquid fuels created using renewable energy, fertilizer made from compost could be part of a zero net carbon system for growing food.