this post was submitted on 26 Nov 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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Reality check on technologies to remove carbon dioxide from the air (news.mit.edu)
submitted 3 weeks ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] houseofleft@slrpnk.net 2 points 3 weeks ago (1 children)

Yeah, trees are pretty amazing! There's also a mammoth amount of carbon capture in the ocean (more than land) mostly via plankton but also sea grass and the like.

Trees play a massive role in the ecosystem we're part of aside from just being carbon stores. If we just focus on carbon storage and invent new tech that does that, it might somewhat improve the situation, but we're really just kicking the can down the road, and waiting for our extraction based economy to cause chaos somewhere else.

[–] futatorius@lemm.ee 1 points 3 weeks ago (1 children)

Only phytoplankton. Quite a lot of plankton biomass consists of animals and single-celled organisms that don't consume CO2.

[–] houseofleft@slrpnk.net 1 points 3 weeks ago

Amazingly zooplankton does play a huge role in reducing CO2. The ocean carbon pump is a mammoth thing, and it's effects are just from the combined movement of life, not phytoplankton's direct FlCO2 storage.

https://en.m.wikipedia.org/wiki/Biological_pump