this post was submitted on 08 Dec 2023
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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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How carbon removal technology is like a time machine | Sucking greenhouse gases out of the atmosphere could help address climate change. So far, available technology is barely winding the clock back (www.technologyreview.com)
submitted 9 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] HubertManne@kbin.social 25 points 9 months ago (7 children)

how carbon removal technology is like a time machine. They are both pipe dreams and distract from real helpful actions.

[–] girsaysdoom@sh.itjust.works 3 points 9 months ago (5 children)

We will likely need both carbon reduction and sequestration to actually be effective in reducing carbon emissions in general. Here's an article that touches on that and as well as goes over concerns about relying too much on carbon dioxide removal.

[–] sic_1@slrpnk.net 3 points 9 months ago (1 children)

I get that carbon collection on industry exhausts are necessary and a must have for a lot of products (like steel). But other than that this is silly. Plant trees and use them to build stuff, plant new trees after that. Rinse, repeat.

[–] girsaysdoom@sh.itjust.works 2 points 9 months ago* (last edited 9 months ago)

I think we need to go a step further. The article I linked earlier touches on how several natural carbon sequestration systems rerelease carbon seasonally or have other implications. Seagrasses release carbon when water is warmer than usual. Trees release carbon during forest fires or from natural decomposition, and even potentially cause local atmospheric warming due to a low reflectivity. Artificial methods of sequestration are necessary, whether as systems that directly capture atmospheric carbon and store it or as systems that interrupt the process of natural decomposition or combustion and divert it to storage or further processing.

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