this post was submitted on 04 Apr 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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The hard lessons of Harvard’s failed geoengineering experiment (www.technologyreview.com)
submitted 7 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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Archived copies of the article: web.archive.org archive.today

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[–] sonori@beehaw.org 3 points 7 months ago

I agree. While I am very skeptical that high altitude geoengineering would work, to me at least this massive fear around studying the upper atmosphere in these ways just makes it more likely that a rouge nation will go ahead with it anyway, precisely because these large margins of errors provide a hope that it could save millions of their citizens lives for negligible cost.

Of course, the other possibility is that it might actually work as expected, we did after all see a big change post fuel oil sulfur regulations, in which case we will have killed more people than died in both world wars purely out of unfounded fewrmongering.

Given the number of real people who are dying today because of climate change, I feel that it is negligent to not at least look into every card we have at our disposal to save lives.