this post was submitted on 18 Jun 2024
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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 6 months ago by silence7 to c/climate
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[–] rbesfe@lemmy.ca 4 points 6 months ago (2 children)

Of all the valid reasons to hate elon for, this is not one of them. The emissions from the entire world's satellite re-entries are basically nothing on an atmospheric scale.

[–] Hirom@beehaw.org 4 points 6 months ago

The article cite a peer-reviewed scientific paper paper which indicate satellites reentry has a significant effect.

Have you published (or know of) a better research paper that show this is incorrect?

the population of reentering satellites in 2022 caused a 29.5% increase of aluminum in the atmosphere above the natural level.

[..]

As aluminum oxide nanoparticles may remain in the atmosphere for decades, they can cause significant ozone depletion.

Source: Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega-Constellations

[–] silence7 3 points 6 months ago

There article is about a paper showing that there's a significant increase in aluminum oxide in the atmosphere. The particulates from that are part of how the small amounts of chlorine in the atmosphere are able to destroy ozone.