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#atmosphere

12 posts12 participants0 posts today

New research on effects of reentries of 1000's of satellites on the Earth's #atmosphere: "We find that depending on reentry latitude and aerosol size distribution, a 20–40-Gg stratospheric burden of Al2O3 aerosols accumulates poleward of 30 N/S between 10 and 30 km. Small but statistically significant changes in mesospheric heating rates lead to 1.5 K-temperature anomalies in the mesosphere and the stratosphere at Southern Hemisphere high latitudes."

agupubs.onlinelibrary.wiley.co

All sorts of #toxic materials are released into the #atmosphere when buildings and their contents #burn. It's why one sees urban #firefighters donning breathing apparatus. #Wildlands adjacent to the Los Angeles basin also contain #mercury and #lead in #soil and litter layers, deposited over many years from #air #pollution generated by vehicles and industries. #Wildfires often emit these heavy metals.

nytimes.com/2025/03/28/well/la

The New York Times · L.A. Firefighters Who Fought Blazes Show Elevated Mercury and Lead LevelsBy Maggie Astor

The common mini-Neptunes typically form with a #hydrogen #atmosphere, resulting in conditions where #hydrogen and the #planet’s molten interior interact for millions to billions of years.

But the temperatures and pressures involved are so extreme that laboratory experiments to study them are nearly impossible.

Water and hydrogen would begin to separate deep within the atmosphere leading to rainfall deep inside the planet’s atmosphere as heavier water sinks.

astrobiology.com/2025/03/atmos

Astrobiology · Atmospheres Of New Planets Might Have Unexpected Mixtures Of Hydrogen And Water - AstrobiologyRecent studies show that the most common type of planets in our galaxy typically form with a hydrogen atmosphere

3D map of #exoplanet #atmosphere shows wacky climate
#Astronomers have mapped the 3D structure of the layered atmosphere of one such ultra-hot #Jupiter-size exoplanet, revealing powerful winds that create intricate #weather patterns across that atmosphere.
"This planet’s atmosphere behaves in ways that challenge our understanding of how weather works."
#Astronomy and #Astrophysics reported on unexpected identification of #titanium in the exoplanet's atmosphere as well.
arstechnica.com/science/2025/0

The 3D structure of the atmosphere of the exoplanet Tylos
Ars Technica · 3D map of exoplanet atmosphere shows wacky climateBy Jennifer Ouellette