Lmst

#atmosphericScience

Trump admin threatens to break up major climate research center https://arstechni.ca/JT5a #atmosphericscience #climatechange #Earthscience #research #Science #NCAR #NSF

Postdoctoral Scholar
Colorado State University

The Laboratory for Air Quality Research (LAQR) in the Department of Mechanical Engineering at Colorado State University (CSU) in Fort Collins, Colorad

See the full job description on jobRxiv: https://jobrxiv.org/job/colorado-state-university-27778-postdoctoral-scholar/

#atmosphericscience #EnvironmentalEngineering #modeling #pollutants #wildlandfire #Sc...
https://jobrxiv.org/job/colorado-state-university-27778-postdoctoral-scholar/?fsp_sid=6255

Postdoctoral Scholar
Colorado State University

The Laboratory for Air Quality Research (LAQR) in the Department of Mechanical Engineering at Colorado State University (CSU) in Fort Collins, Colorad

See the full job description on jobRxiv: https://jobrxiv.org/job/colorado-state-university-27778-postdoctoral-scholar/

#atmosphericscience #EnvironmentalEngineering #modeling #pollutants #wildlandfire #Sc...
https://jobrxiv.org/job/colorado-state-university-27778-postdoctoral-scholar/?fsp_sid=4708

@space_environmentalism @planet4589
Exactly the problem.

We failed to understand that there are risks to evaluate.

Unfortunately, unless we have a global process, Starlink, etc will simply swap launch sites to countries that don't care about safety or ecosystems or sustainable use of scarce orbital space.

Unlike Vegas, what happens "here" doesn't stay "here". And satellite debris seems to disperse to everywhere.

#spacejunk #AtmosphericScience #kesslersyndrome #pollution

What is #SciX? Think of it as your one-stop platform for exploring #research across #EarthScience, #EnvironmentalScience, and #SpaceScience, including #PlanetaryScience, #Heliophysics, #Geology, #Geophysics, #AtmosphericScience, and #Oceanography. Watch our new video! bit.ly/WelcomeToSciX

TROPICS Eyes Hurricane Erin

#Atmosphere #AtmosphericPhenomena #Atmosphericscience #Constellation #CubeSat #EarthScience #Heliosphere #Hurricanes

⏩ 2 new pictures and 2 new videos from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=6&user=OptimusPrimeBot&ilshowall=1&offset=20250822125635

TROPICS_Eyes_Hurricane_Erin_(SVS5576).jpg

Powerful Hurricane Erin forms in the Atlantic 🌑🧑‍🚀

#ApolloMissions #Artemis #AtlanticOcean #Atmosphere #AtmosphericPhenomena #Atmosphericscience #Caribbean #EarthScience

⏩ 3 new pictures and 2 new videos from NASA (SVS) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=6&user=OptimusPrimeBot&ilshowall=1&offset=20250820125645

Powerful_Hurricane_Erin_forms_in_the_Atlantic_(SVS5575).jpg

Simulated_Artemis_II_Lunar_Flyby_(SVS5536).jpg

Un disque solaire lévite seul à 60 km grâce à la photophorèse… cette poussée vieille de 150 ans pourrait-elle ouvrir la mésosphère ? https://media24.fr/2025/08/14/pour-la-premiere-fois-ce-phenomene-physique-rare-et-connu-depuis-150-ans-va-permettre-de-creer-des-sondes-sans-batterie-ni-moteur-la-photophorese/ #Space #Science #Innovation #AtmosphericScience #Photophoresis #PassiveProbes #MesosphereExploration

Cloud Convection on Titan

Saturn’s moon Titan is a fascinating mirror to our own planet. It’s the only other planetary body with surface-level liquid lakes and seas, but instead of water, Titan’s are made of frigid ethane and methane. Like Earth, Titan has a weather cycle that includes evaporation, condensation, and rain. And now scientists have made their first observations of clouds convecting in Titan’s northern hemisphere.

Using data from both the Keck Observatory and JWST, the team tracked clouds on Titan rising to higher altitudes, a critical step in the planet’s methane cycle. This translation took place over a period of days, giving scientists modeling the Saturnian moon new insight into the seasonal behaviors of Titan’s atmosphere. (Image credit: NASA/ESA/CSA/STScI; research credit: C. Nixon et al.; via Gizmodo)

#atmosphericScience #clouds #convection #fluidDynamics #physics #planetaryScience #science #Titan

A Sprite From Orbit

A sprite, also known as a red sprite, is an upper-atmospheric electrical discharge sometimes seen from thunderstorms. Unlike lightning, sprites discharge upward from the storm toward the ionosphere. This particular one was captured by an astronaut aboard the International Space Station. That’s a pretty incredible feat because sprites typically only last a millisecond or so. The first one wasn’t photographed until 1989. (Image credit: NASA; via P. Byrne)

#astronaut #atmosphericScience #fluidDynamics #lightning #physics #plasma #science #sprite

An astronuat photo of a red sprite -- a plasma outburst from a thundercloud -- as viewed from orbit.

On 27th May, the U.S. Federal Communications Commission published "FCC Kickstarts a Proceeding that Could Unlock More than 20,000 Megahertz of Spectrum for High-Speed Internet Delivered from Space". (https://www.fcc.gov/document/fcc-looks-unleash-more-spectrum-satellite-spectrum-abundance) Some of it is a Notice of Proposed Rulemaking and other parts are a Further NPRM. This proceeding has not been released in the Federal Register, so we don't yet know when comments and reply comments are due.

The Commission seeks comment on expanding satellite connectivity across four spectrum bands: 12.7-13.25 GHz, 42.0-42.5 GHz, 51.4-52.4 GHz, and the so-called "W-band" at 92.0-94.0 GHz, 94.1-100 GHz, 102.0-109.5 GHz, and 111.8-114.25 GHz. It covers a number of bands and certainly touches on areas of concern to both #RadioAstronomy and #AtmosphericScience.

Inside Hail Formation

Conventional wisdom suggests that hailstones form over the course of repeated trips up and down through a storm, but a new study suggests that formation method is less common than assumed. Researchers studied the isotope signatures in the layers of 27 hailstones to work out each stone’s formation history. They found that most hailstones (N = 16) grew without any reversal in direction. Another 7 only saw a single period when upwinds lifted them, and only 1 of the hailstones had cycled down-and-up more than once. They did find, however, that hailstones larger than 25mm (1 inch) in diameter had at least one period of growth during lifting.

So smaller hailstones likely don’t cycle up and down in a storm, but the largest (and most destructive) hailstones will climb at least once before their final descent. (Image credit: D. Trinks; research credit: X. Lin et al.; via Gizmodo)

#atmosphericScience #fluidDynamics #iceFormation #meteorology #physics #science #thunderstorm

Many small hailstones scattered among blades of green grass.

☁️ ❄️ EPFL atmospheric and climate scientists show that biological particles may induce rain events that could contribute to flooding and snowstorms, owing to their ability to precipitate ice formation in clouds. They call for an update of meteorological and climate models.

#ClimateScience #AtmosphericScience #ClimateModels

Read more: https://go.epfl.ch/UGG-en

Climate Change and the Equatorial Cold Tongue

A cold region of Pacific waters stretches westward along the equator from the coast of Ecuador. Known as the equatorial cold tongue, this region exists because trade winds push surface waters away from the equator and allow colder, deeper waters to surface. Previous climate models have predicted warming for this region, but instead we’ve observed cooling — or at least a resistance to warming. Now researchers using decades of data and new simulations report that the observed cooling trend is, in fact, a result of human-caused climate changes. Like the cold tongue itself, this new cooling comes from wind patterns that change ocean mixing.

As pleasant as a cooling streak sounds, this trend has unfortunate consequences elsewhere. Scientists have found that this cooling has a direct effect on drought in East Africa and southwestern North America. (Image credit: J. Shoer; via APS News)

#atmosphericScience #climateChange #fluidDynamics #oceanography #physics #planetaryScience #science

The equatorial cold tongue stretches thousands of kilometers westward from Ecuador along the equator. It has far-ranging effects, including in the Galapagos archipelago seen here.

Playful Martian Dust Devils

The Martian atmosphere lacks the density to support tornado storm systems, but vortices are nevertheless a frequent occurrence. As sun-warmed gases rise, neighboring air rushes in, bringing with it any twisted shred of vorticity it carries. Just as an ice skater pulling her arms in spins faster, the gases spin up, forming a dust devil.

In this recent footage from the Perseverance Rover, four dust devils move across the landscape. In the foreground, a tiny one meets up with a big 64-meter dust devil, getting swallowed up in the process. It’s hard to see the details of their crossing, but you can see other vortices meeting and reconnecting here. (Video and image credit: NASA/JPL-Caltech/LANL/CNES/CNRS/INTA-CSIC/Space Science Institute/ISAE-Supaero/University of Arizona; via Gizmodo)

#atmosphericScience #conservationOfAngularMomentum #dustDevils #fluidDynamics #Mars #physics #science #vorticity

Black and white video illustrating a small Martian dust devil catching up to and getting swallowed up by a larger dust devil.

Inside an Alien Atmosphere

Studying the physics of planetary atmospheres is challenging, not least because we only have a handful of examples to work from in our own solar system. So it’s exciting that researchers have unveiled our first look at the 3D structure of an exoplanet‘s atmosphere.

Using ground-based observations, researchers studied WASP-121b, also known as Tylos, an ultra-hot Jupiter that circles its star in only 30 Earth hours. One face of the planet always faces its star while the other faces into space. The team found that the exoplanet has a flow deep in the atmosphere that carries iron from the hot daytime side to the colder night side. Higher up, the atmosphere boasts a super-fast jet-stream that doubles in speed (from an estimated 13 kilometers per second to 26 kilometers per second) as it crosses from the morning terminator to the evening. As one researcher observed, the planet’s everyday winds make Earth’s worst hurricanes look tame. (Image credit: ESO/M. Kornmesser; research credit: J. Seidel et al.; via Gizmodo)

#astronomy #atmosphericScience #exoplanets #fluidDynamics #physics #planetaryScience #science

Illustration of 3 layers of an ultra-hot Jupiter's atmosphere, labeled by their tracer element. Beginning from the outer layer and moving inward, they are labeled: Hydrogen, Sodium, and Iron.

Atmospheric Rivers Raise Temperatures

Atmospheric rivers are narrow streams of moisture-rich air running from tropical regions to mid- or polar latitudes. Though relatively short-lived, they are capable of carrying — and depositing — more water than the largest rivers. But researchers have found that their impact is not measured in water content alone. Instead, a survey of 43 years’ worth of data shows that atmospheric rivers also bring unusually warm temperatures. In some cases, the authors found surface temperatures near an atmospheric river climbed to as high as 15 degrees Celsius above the typical. On average, temperatures were about 5 degrees Celsius higher than expected for the region’s climate.

Several factors raise those temperatures — like the heat released when rising vapor meets cooler air and condenses into liquid — but the biggest effect came from carrying warm tropical temperatures to (usually) cooler regions. (Image credit: L. Dauphin/NASA; research credit: S. Scholz and J. Lora; via Physics Today)

#atmosphericRiver #atmosphericScience #fluidDynamics #meteorology #physics #science #weather