this post was submitted on 16 Nov 2023
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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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Greenhouse gases soared to another record and there’s ‘no end in sight’ (wapo.st)
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[–] HaiZhung@feddit.de 4 points 1 year ago (1 children)

While I appreciate the sentiment, I think it’s unrealistic to expect the greenhouse gas concentration in the atmosphere to decrease. For that, we already would need net 0 emissions AND some sort of carbon capture system in place.

For now, what must decrease is greenhouse gas emissions, and the article admits that that is what happened (but the decrease was so low it could be attributed to natural fluctuations).

[–] MrMakabar@slrpnk.net 1 points 1 year ago

There are natural systems capturing carbon as well. The problem is that it takes 10,000 years or so to capture all humans have released to date. So zero emissions would already lower concentration over time.