this post was submitted on 09 Feb 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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The world is reducing its reliance on fossil fuels – except for in three key sectors: shipping, aviation and industry a long way from net zero (www.theguardian.com)
submitted 9 months ago by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] Encromion@sh.itjust.works 2 points 9 months ago (2 children)

Maybe out in a limb here but, I think industry and aviation are two of the areas that should be able to use fossil fuels longer than others. Their energy expenditure is huge, yes, but the scientific advancement that is necessary to make them zero carbon are still quite a ways in the future.

[–] silence7@slrpnk.net 2 points 9 months ago

It depends on the industry. We know how to prevent the bulk of emissions from concrete and steel, which are the big ones. And yes, aviation might well end up needing to use direct air capture to remove their emissions

[–] benjhm@sopuli.xyz 1 points 9 months ago

Who decides the 'should be able to' - do sectors get 'grandfathering' rights? Maybe energy-inefficient sectors should decline to give more space for smarter solutions. Much aviation could be replaced by faster rail or shipping, which is much less energy intensive. Many (not all) industrial products also have substitutes. Much concrete and steel is used to make unnecessary roads which cover green spaces, and in the case of China, blocks that nobody even lives in. Many agri-chemicals are over-applied, leading to water pollution.