#atmosphericchemistry — Public Fediverse posts

LINK Arrives at NASA Wallops, Begins Rocket Integration

#Ast #Astrophysics #Atmosphere #AtmosphericChemistry/OxygenCompounds #AtmosphericGravityWaves #Balloon #Camera #EarthScience

⏩ 3 new pictures and 3 new videos from NASA (SVS) https://commons.wikimedia.org/w/index.php?search=incategory%3A%22NASA+SVS+files+uploaded+by+OptimusPrimeBot%22&sort=create_timestamp_desc&ns6=1

Airborne particulate matter from North African deserts is reaching Europe in increasing concentrations, creating a rising source of air pollution that counteracts the continent's recent decline in anthropogenic emissions.
#AtmosphericChemistry #Climatology #EnvironmentalScience #Epidemiology #sflorg
https://www.sflorg.com/2026/07/as07152601.html

Levoglucosan, a molecular tracer traditionally used to measure fine particulate matter (PM2.5) emissions from biomass burning, degrades chemically in the atmosphere significantly faster than previously assumed. Up to 88 percent of the compound is lost to volatilization and atmospheric degradation before it can be measured.
#AtmosphericChemistry #EnvironmentalScience #AnalyticalChemistry #sflorg
https://www.sflorg.com/2026/06/as06262601.html

Atmospheric chemistry is a specialized branch of atmospheric science focused on the chemical composition of the Earth's atmosphere and the atmospheres of other planets.
#AtmosphericChemistry #AtmosphericScience #Chemistry #Physics #sflorg
https://www.sflorg.com/2026/05/cat05242601.html

Researchers have successfully synthesized and stabilized rare radical anions containing an extended four-atom nitrogen chain
#SyntheticChemistry #ComputationalChemistry #AtmosphericChemistry #sflorg
https://www.sflorg.com/2026/05/chm05212602.html

Antarctic Ozone Hole Maximum Area, 1979-2025

#Antarctic #AtmosphericChemistry/OxygenCompounds #OzoneHole #ozone

⏩ 1 new picture and 1 new video from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=4&user=OptimusPrimeBot&ilshowall=1&offset=20260430125608

Corona discharges are miniature pulses of electricity that occur at the highest tips of tree leaves during thunderstorms, generating a faint glow in both the visible and ultraviolet (UV) spectrums.
#Meteorology #AtmosphericScience #AtmosphericChemistry #sflorg
https://www.sflorg.com/2026/04/as04162601.html

New Notice
An Overdue Update: Giving Atmospheric Science Its Own Space
#AtmosphericScience #Climatology #Meteorology #Paleoclimatology #AtmosphericPhysics #Aeronomy #AtmosphericChemistry #sflorg
https://www.sflorg.com/p/notices.html

Atmospheric Science is the comprehensive study of the Earth's atmosphere, its physical and chemical processes, and the interactions between the atmosphere and other systems such as the hydrosphere, lithosphere, and biosphere.
#AtmosphericScience #Climatology #Meteorology #Paleoclimatology #AtmosphericPhysics #Aeronomy #AtmosphericChemistry #sflorg
https://www.sflorg.com/2026/02/cat02172602.html

The unprecedented surge in #atmospheric #methane during the early 2020s was primarily driven by a temporary decline in #hydroxyl (OH) radicals, which reduced the atmosphere's ability to break down the gas, coupled with increased natural emissions from wetlands due to wetter #climate conditions.
#AtmosphericChemistry #Biogeochemistry #Chemistry #Environmental #EarthScience #sflorg
https://www.sflorg.com/2026/02/chm02092601.html

@MennoWolff @amiserabilist @Kierkegaanks @TidalFlats

depends how hydrophilic it is. Some things, like sulfur trioxide, go after water vapor like a doberman on a pork chop (duh, those things are called "desiccants")

In that both HF and H2O hydrogen bond like crazy, I bet you'd need a low RH to stop this.

Now I'm wondering about water oligomers at say 70% RH. Water is a very sticky molecule, when you pull vacuum on a system pumping out the water is the first challenge.

Interesting discussion

I think I need to tag this

#chemistry #AtmosphericChemistry

ESCAPADE Theoretical Flight Through Active Mars Magnetosphere 🌑🌱🧑‍🚀🪐

#Artemis #Atmosphere #AtmosphericChemistry/OxygenCompounds #BiologicalClassification #CoronalMassEjections #ESCAPADE #EarthScience #Heliophysics

⏩ 2 new pictures and 3 new videos from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=20&user=OptimusPrimeBot&ilshowall=1&offset=20251126125614

Ozone–oxygen cycle (Biogeochemical cycle 🔄)

The ozone–oxygen cycle is the process by which ozone is continually regenerated in Earth's stratosphere, converting ultraviolet radiation into heat. In 1930 Sydney Chapman resolved the chemistry involved. The process is commonly called the Chapman cycle by atmospheric scientists. Most of the ozone production occurs...

https://en.wikipedia.org/wiki/Ozone–oxygen_cycle

#OzoneOxygenCycle #Oxygen #OzoneDepletion #BiogeochemicalCycle #AtmosphericChemistry

An X9.0 flare from Active Region 13842 - October 3, 2024

#Antarctic #Atmosphere #AtmosphericChemistry/OxygenCompounds #Corona #CoronalMassEjections #EUVImaging #EarthScience #ExtremeUltravioletImaging

⏩ 4 new pictures and 4 new videos from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=26&user=OptimusPrimeBot&ilshowall=1&offset=20241031130145

The Solar System May Have Passed Through Dense Interstellar Clouds 2 Million Years Ago, Altering Earth’s Climate
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https://www.eurekalert.org/news-releases/1047528 <-- AAAS press release
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https://doi.org/10.1038/s41550-024-02279-8 <-- shared paper
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“Astrophysicists calculate the likelihood that Earth was exposed to cold, harsh interstellar clouds, a phenomenon not previously considered in geologic climate models…"
#GIS #spatial #mapping #interstellar #clouds #astrophysics #climate #climatechange #atmosphere #geologic #paleoclimate #paleoclimatology #cold #iceage #solarwind #plasmashield #heliosphere #radiation #galacticrays #DNA #model #modeling #interstallarmedium #spacephysics #atmosphericchemistry #solarsystem #spaceweather

#climatechange #CarbondDioxide #AtmosphericChemistry

Looked around today, and the latest reported carbon dioxide atmospheric concentration is 422ppm. An online calculator converted this to a molar concentration of carbon dioxide of about 10 micromols. I found a graphic for carbon dioxide consumption in photosynthesis, the greatest sink for atmospheric carbon dioxide I could think of.

Like many biological processes substrate concentration determines the extent of reaction during any given amount of time, but there is an upper limit.
Also available photosynthetic light increases extent of reaction to an upper limit.

It seems carbon dioxide concentration and light both play a factor in determining the maximum rate of photosynthesis.

Does anyone have information on real world calculations of the maximum rate of photosynthesis?

When UV light is not always the solution indoors,.....

common UV lamps used as germicide have the unintended consequence of producing #ozone

the study
https://pubs.acs.org/doi/10.1021/acs.estlett.3c00314

#AtmosphericChemistry
#AtmosphericComposition

A new study investigates the transport and removal processes of tropospheric ozone trace gas precursors in thunderstorms. Numerical simulations were performed to understand storm processes affecting atmospheric gases with different solubilities. doi.org/10.1029/2022JD037107 #atmosphericchemistry

#introduction

Hi all! I'm an atmospheric chemist and professor at University of Minnesota. I study atmospheric trace gases and surface-atmosphere exchange using field measurements, modeling, and satellite-based remote sensing. Looking forward to conversations about those things and about science/academia more broadly. Also nerdy jokes. And anything about cycling, hockey, or coonhounds.

#Introductions #NewHere #AirQuality #AtmosphericChemistry #Science