this post was submitted on 20 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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World facing ‘hellish’ 3C of climate heating, UN warns before Cop28 | ‘We must start setting records on cutting emissions,’ UN boss says after temperature records obliterated in 2023 (www.theguardian.com)
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[–] KISSmyOS@lemmy.world 7 points 2 years ago* (last edited 2 years ago)

I got the yield range of the Hiroshima bomb from https://en.wikipedia.org/wiki/Nuclear_weapon_yield and used 60 TJ as a middle estimate.
I got the increase in Ocean Heat Content between 2020 and 2021 from here: https://link.springer.com/article/10.1007/s00376-022-1461-3 and used 14 ZJ as a middle estimate.

Then I divided one by the other and rounded down to the nearest 10 million Hiroshima bombs, cause who cares about a couple million of those here and there?