"History provides us with valuable lessons, allowing us to learn from past mistakes. Despite the success of the Montreal protocol, the ozone layer is not expected to fully recover until 2066, meaning it will take an 80-year effort to restore what was harmed in just a few decades. "
#OnThisDay Birth Anniversary of David Livingstone (1813) - #Explorer in #Africa, and one of the most popular British heroes of the late 19th-century Victorian era.
Birth Anniversary of #Physicist and Nobel Laureate Frédéric Joliot-Curie (1900).
Birth Anniversary of Mario J. Molina (1943) - Mexican-born #Chemist known for his pivotal role in the discovery of the Antarctic #OzoneHole.
Happy Birthday Bruce Willis (1955).
#FYI #PaulBeckwith video lecture and literature review #satellites #starlink #musk #pollution #ozone #ozonehole
"The problem is that deploying massive constellations of low earth orbit (LEO) satellites that have a typical lifetime of 5 years can load up the mesosphere with the metal oxides upon their reentry, and there will be a lag of 20 or 30 years before gravity pulls these oxides down into the ozone layer which they can then severely degrade."
In the interests of my resolution to not spread bad news, here's something positive - looks like the #Antarctic #OzoneHole is getting smaller.
My ace colleagues @dmidk have a webpage they update regularly on this stuff: http://psc.dmi.dk/antarctica/
In the interests of my resolution to not spread bad news, here's somethign positive - the #Antarctic #OzoneHole is getting smaller. My ace colleagues @dmidk.bsky.social have a webpage they update regularly on this stuff: psc.dmi.dk/antarctica/
The 2024 Antarctic #ozonehole has persisted throughout November following its average development up to that point. The stratospheric polar vortex is predicted to breakdown in early December bringing it to a close.
See more charts and information: https://atmosphere.copernicus.eu/monitoring-ozone-layer
Our front garden, on Election Day. We've never gone this late without a frost before. Central Pennsylvania. #frost #frostwarning #autumn #fall #climatechange #globalwarming #ozonehole #garbageisland #gardens #gardener #gardening #pennsylvaniagarden #pennsylvaniagardens
The 2024 Antarctic #ozonehole continues its fairly average development, unlike the large ozone holes from previous years, declining very steadily since mid-October.
Is this a sign of recovery? We answered this question in this article: https://atmosphere.copernicus.eu/slow-start-2024-ozone-hole?utm_source=socialmedia&utm_medium=ma&utm_id=news-ozone-hole-0924
Follow the process with the #CopernicusAtmosphere Monitoring Service: https://atmosphere.copernicus.eu/monitoring-ozone-layer
Good news everyone!
The ozone hole looks like it's on the mend! Estimates are that by 2066 it will recover to its 1980 levels over Antarctica.
The Montreal Protocol, which limited production of ozone depleting chemicals, came into effect Jan 1989, took 30+ years to start working and it might be 70 years to fully repair the damage.
The bad news? We haven't started making serious inroads on curbing climate change!
Proof that #EnvironmentalPolicy works: "During the peak of #ozone depletion season, the 2024 area of the #OzoneHole ranked the seventh smallest since recovery began in 1992, when the #MontrealProtocol, a landmark international agreement to phase out ozone-depleting chemicals, began to take effect."
https://www.earthobservatory.nasa.gov/images/153523/ozone-hole-continues-healing-in-2024
Might have gone unnoticed among all the bad news these days: the #OzoneHole over #Antarctica is on a good track to recovery. We might be back to 1980s conditions around the 2060s.
Thanks to the #MontrealProtocol, the most successful environmental agreement ever!
https://wmo.int/media/news/wmo-ozone-and-uv-bulletin-published-world-ozone-day
The annual #ozonehole over the #Antarctic is developing again. If you want to keep track, visit our website for all the latest charts and details: https://atmosphere.copernicus.eu/monitoring-ozone-layer
There you will also find the daily updated 3D rendering of the ozone hole evolution in 2024.
Satellite Mega Constellations Could Jeopardize Ozone-Hole Recovery
Pollution from skyrocketing numbers of satellites burning up in Earth’s atmosphere could threaten our planet’s protective ozone layer
https://www.scientificamerican.com/article/satellite-mega-constellations-could-jeopardize-ozone-hole-recovery/ via @sciam_bot
If you think the #Cybertruck is a dystopian 80s retro-futurist dumpster fire, just wait until you see #Starlink and #SpaceX bring back the #OzoneHole
People who actually work on atmospheric sciences and do this stuff for a living have been warning about the ecological cluster of ducks posed by the risk of exponentially increasing amounts of #SpaceJunk for a while now. It's good to see it getting mainstream attention. If our world can't afford #BingeFlying (and she can't), then we absolutely can't afford #SpaceKaren and his #BingeRocketry.
https://www.independent.co.uk/space/elon-musk-spacex-starlink-internet-b2565081.html
"Using a chemistry-transport model we find that air-pollution ozone enhancements in the troposphere spill over into the stratosphere at significant rates, that is, 13%–34% of the excess tropospheric burden appears in the lowermost extra-tropical stratosphere... we should recognize that two tenths of that recovery may come from the transport of increasing tropospheric ozone into the stratosphere."
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023AV001154?af=R
Over the last 25 years, the ozone hole which forms over Antarctica each spring has started to shrink. But over the last four years, even as the hole has shrunk it has persisted for an unusually long time... #antarctica #ozonelayer #OzoneHole #climate #climatechange #species #breeding #EarthScience #environment #nature #antarctic #polarregions #atmosphere #climatescience #penguins #seals https://www.sciencealert.com/antarcticas-extended-ozone-hole-raises-concerns-for-penguin-and-seal-breeding
#OnThisDay Birth Anniversary of David Livingstone (1813) - #Explorer in #Africa, and one of the most popular British heroes of the late 19th-century Victorian era.
Birth Anniversary of Mario J. Molina (1943) - Mexican-born #Chemist known for his pivotal role in the discovery of the Antarctic #OzoneHole.
Happy Birthday Bruce Willis (1955).
About that ozone hole..
Doesn't seem to be healing very fast - not due to #CFCs necessarily but a quirk of the #Climate system means a colder #Stratosphere - which is delaying things.
Really good piece from my colleagues at DMI on it (in danish but DeepL works really well for translation):
#OzoneHole #OzoneLayer #Ozone #Antarctica
https://www.dmi.dk/nyheder/2024/ozonhullets-lange-helingsproces
Die #Menschheit glaubt abgöttisch an den #Mythos des Wachstums. Jetzt hat sich die intelligenteste Spezies auf dem Planeten (nach eigenen Angabe) eventuell etwas neues hinsichtlich #Wachstum des #Ozonlochs ausgedacht:
"An Endless Stream of Satellites Is Burning Up in The Sky, And Nobody Knows The Cost"
The large and persistent 2023 #OzoneHole finally closed on Dec 20, after a series of surprising twists 
. The reasons behind this behaviour remain unclear but point to #climatechange or volcanic emissions.
