this post was submitted on 11 Oct 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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Even temporary global warming above 2℃ will affect life in the oceans for centuries (www.csiro.au)
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The paper is here

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[–] [email protected] 1 points 2 years ago (6 children)

Amy ideas how close we are to this actually happening? I saw we hit 1.8° a few weeks ago... .2° is not a big difference..

[–] [email protected] 9 points 2 years ago (1 children)

We haven't reached 2° yet, but we're past the point where it's even theoretically possible to avoid.
Even if we stopped absolutely all CO2 production right now. What we've already released is enough to put us over 2° in the coming years.

[–] [email protected] 3 points 2 years ago

Even without any fossil fuels, the current food system alone is responsible for +2°C

https://www.science.org/doi/10.1126/science.aba7357 (2020)

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