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Jan Wildeboer 😷:krulorange:'s posts Post Back to profile
Jan Wildeboer 😷:krulorange:

Adding up to 360 metric tons of aluminium oxide per year to the atmosphere due to disposing of mega-constellation (Starlink etc) satellites might create ozone depletion amongst other as of yet unknown effects. agupubs.onlinelibrary.wiley.co

Potential Ozone Depletion From Satellite Demise During Atmospheric Reentry in the Era of Mega‐Constellations JosΓ© P. Ferreira1 , Ziyu Huang1 , Ken‐ichi Nomura2 , and Joseph Wang1 1Department of Astronautical Engineering, University of Southern California, Los Angeles, CA, USA, 2Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA, USA Abstract Large constellations of small satellites will significantly increase the number of objects orbiting the Earth. Satellites burn up at the end of service life during reentry, generating aluminum oxides as the main byproduct. These are known catalysts for chlorine activation that depletes ozone in the stratosphere. We present the first atomic‐scale molecular dynamics simulation study to resolve the oxidation process of the satellite's aluminum structure during mesospheric reentry, and investigate the ozone depletion potential from aluminum oxides. We find that the demise of a typical 250‐kg satellite can generate around 30 kg of aluminum oxide nanoparticles, which may endure for decades in the atmosphere. Aluminum oxide compounds generated by the entire population of satellites reentering the atmosphere in 2022 are estimated at around 17 metric tons. Reentry scenarios involving mega‐constellations point to over 360 metric tons of aluminum oxide compounds per year, which can lead to significant ozone depletion.
13 Jun 2024 at 13:24 | Open on social.wildeboer.net
14 comments
FediThing πŸ³οΈβ€πŸŒˆ

@jwildeboer

Hey @JohnBarentine and @sundogplanets did you know Starlink etc might be threatening ozone layer too? 😦

13 Jun 2024 at 13:41 | Open on social.chinwag.org
Prof. Sam Lawler

@FediThing @jwildeboer @JohnBarentine I did know about the possibility, I am very happy that atmospheric chemistry experts wrote a paper on it!

13 Jun 2024 at 14:07 | Open on mastodon.social
Mallory's Musings & Mischief

@jwildeboer You're telling me letting something burn up in the atmosphere doesn't just mean it magically disappears? Inconceivable!

13 Jun 2024 at 14:19 | Open on thingy.social
Albert Cardona

@jwildeboer

"If you don't know how to fix it, please, stop breaking it!" – Severn Cullis-Suzuki's speech to the United Nations, 1992.

youtube.com/watch?v=JGdS8ts63C

#EcosystemCollapse #GlobalWarming #ClimateChange

13 Jun 2024 at 14:21 | Open on mathstodon.xyz
Jan Wildeboer 😷:krulorange:

I had a longer thread on this topic a while ago and wanted to turn it into a blog post. But I am happy to see real experts weighing in.

13 Jun 2024 at 14:40 | Open on social.wildeboer.net
Metin Seven 🎨

@jwildeboer Ken je deze site al? Daarmee kun je een Mastodon thread omzetten naar een blog layout:

mastoreader.io/

13 Jun 2024 at 15:32 | Open on graphics.social
Jan Wildeboer 😷:krulorange:
🦊 Paul Schoonhoven πŸ‰ πŸ‹

@jwildeboer heb je toevallig ook een oplossing andersom? πŸ˜‡
(eigenlijk vind ik dat t iets moet zijn voor in een app als
@Tusky)
@metin

13 Jun 2024 at 15:37 | Open on mastodon.nl
Jan Wildeboer 😷:krulorange:
🦊 Paul Schoonhoven πŸ‰ πŸ‹

@jwildeboer van lap tekst naar draadje toots. πŸ˜‡
@Tusky @metin

13 Jun 2024 at 15:41 | Open on mastodon.nl
Jan Wildeboer 😷:krulorange:

@vosje62 Ah, OK. Nee, want zo werk ik niet. I begin vaak met een toot, dan denk ik "oh and this and this and that" :) @Tusky @metin

13 Jun 2024 at 15:43 | Open on social.wildeboer.net
🦊 Paul Schoonhoven πŸ‰ πŸ‹

@jwildeboer haha... Ja,.. Ik ook. Alleen soms wil ik iets kwijt waar ik van te voren weet dat het dan zeker 10 toots zal worden. Vaak laat ik het dan maar zitten.
@Tusky @metin

13 Jun 2024 at 15:45 | Open on mastodon.nl
Jan Wildeboer 😷:krulorange:

@vosje62 My simple rule is: If it takes more than 3 toots with a max 500 char limit it's a blog post :) @Tusky @metin

13 Jun 2024 at 15:50 | Open on social.wildeboer.net
🦊 Paul Schoonhoven πŸ‰ πŸ‹

@jwildeboer daar heb je eigenlijk gewoon gelijk in. πŸ˜‡
Maar een blog blijkt niet mn ding te zijn. πŸ™ˆ

@Tusky @metin

13 Jun 2024 at 15:52 | Open on mastodon.nl
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