this post was submitted on 18 Jun 2024
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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.

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Please Do Not Let Elon Musk Destroy the Ozone Layer (www.splinter.com)
submitted 5 months ago by [email protected] to c/[email protected]
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[–] [email protected] 15 points 5 months ago (1 children)

https://phys.org/news/2024-06-satellite-megaconstellations-jeopardize-recovery-ozone.amp

The issue is that meteorites don't have hardly any aluminum, which is the metal of concern here. We're already seeing significant increases in the upper atmospheric concentration, and it's projected to get a lot worse.

[–] [email protected] 2 points 5 months ago

Meteorites do contain aluminum. The issue is with the concentration of aluminum in the atmosphere, as well as its rate of increase. If there's an increase in the atmospheric burn up of artificial satellites accompanied by an increase in the problematic particulate in the atmosphere, then it's certainly fair to consider that the two are correlated. This is especially so if there is no increase in the burn up of objects from any natural source — eg meteors.