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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[โ€“] Skua@kbin.social 4 points 1 year ago (1 children)

A 1m square tower that size would only be 4,169 m ^3 . Mauna Loa is mostly basalt, which weighs about 2.9 Mg per m ^3 . This tower would therefore weigh about 12,000 tonnes. You'd need almost 6 billion of those towers to get to the 70 trillion Mg figure.

Mauna Loa's actual mass is probably about three times that number because of the density of the rocks in it, but in terms of orders-of-magnitude estimation it was about right.