this post was submitted on 13 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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$266 Trillion in Climate Spending Is a No-Brainer | Without the investment, the alternative is $2.3 quadrillion in accumulated damage by the end of the century. (www.bloomberg.com)
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[–] TropicalDingdong@lemmy.world 1 points 1 year ago

However it is propably smarter to store just the carbon in the form of coal. That would only be 0.475 trillion t. Thats like 1200 times the global paper production in mass.

So I tried doing my calculations with better data.

My estimate is that there are 2041 gigatonnes of co2 in the atmosphere remaining post industrial revolution. This equivalent to about 5% of the mass of Mauna Loa, in the form of wood equivalent carbon. Still a bewilderingly large amount, but much smaller.

We would need to sequester approximately 1,133,900,000,000 megagrams of wood from trees to offset these emissions.

Would also love a sanity check. I'm using this dataset and some conversion factors for my math: https://ourworldindata.org/grapher/cumulative-co-emissions?country=~OWID_WRL