LightNews — News, ranked by scholars

France-Jeunes

@francejeunes.bsky.social

Traînées de condensation : pourquoi elles réchauffent, et ce qui peut les réduire

❓ Pourquoi les traînées de condensation réchauffent-elles le climat ?
❓ Les traînées persistantes sont-elles des épandages délibérés ?

#contrails #cirrusclouds #sootparticles

Traînées de condensation : pourquoi elles réchauffent et ce qui peut les réduire

Les traînées persistantes ont un effet réchauffant net, mais leur forçage estimé a été revu à la baisse en 2024. L'évitement ciblé donne des résultats surtout lorsqu'il est appliqué ; l'UE impose depuis 2025 une surveillance des effets non-CO2, sans les tarifer.

france-jeunes.net

October 20, 2026 at 10:03 AM

WDEF Chief Meteorologist Austen Onek

@wdefaustenonek.bsky.social

Thanks to @WDEFNews12 viewer John Chastain for some #CirrusClouds from Spring City TN... Thursday's HEP Heating #WeatherWindow #PictureOfTheDay.

August 20, 2026 at 11:00 PM

WDEF News 12

@wdefnews12.bsky.social

Thanks to @WDEFNews12 viewer John Chastain for some #CirrusClouds from Spring City TN... Thursday's HEP Heating #WeatherWindow #PictureOfTheDay.

August 21, 2026 at 12:15 AM

MereTheeWell

@mymerehut.bsky.social

After a day of working outside, a chance to sit and relax. #Colorado #LarimerCountyColorado #CrescentMoon #cirrusClouds

May 3, 2025 at 10:44 PM

Gnomie 🌼🌿

@gnomieshobbycorner.bsky.social

Went down to Fairplain for a bite to eat and ended up watching the sunset. 🌄

#nature #sunset #trees #cirrusclouds #mobilephotography

Blue sky and cirrus clouds. Orange/yellow evening sun sinking low between the trees. Tree line appears black in the foreground.

November 30, 2024 at 11:43 PM

Oregon Randy

@oregonrandy.bsky.social

I love me some Sundogs! Only one side today. If there is good, consistent high cirrus cloud cover, you may see them to the left and right of the sun! #lookup #sundog #cirrusclouds #📷
There are a bunch of other types of arcs, and whatnot, that are not sundogs. You can look those up. #EastCoastKin

$A photo of high clouds in a blue sky, with a bright, rainbow colored sundog appearing. They are caused by refracted sunlight passing through very uniform ice crystals in high clouds, like many many tiny prisms. With sundogs, there are one, or sometimes, two. One to each side of the sun. If you're lucky, and the clouds are just right, you may get to witness an arc, or complete halo with them as well. To the far right side is the edge of a houses roof line, and some of it's walls exterior siding, and toward the bottom, a few utility wires.$

May 30, 2025 at 1:43 AM

Carson Hill

@dicenbuttons.mastodon.social.ap.brid.gy

Not a lot of flowers around on my walks this time of year. A gorgeous sky though.

#bloomscrolling #cirrusclouds #awalkaday

A cloud drifts across an azure sky, enjoying a brief existence as the sun licks it away molecule by molecule.

A spikey weed of some kind grows in the shade, each blossom looking like a yellow frisbee.

July 30, 2026 at 1:14 AM

Prof Phoebe Barnard

@phoebebarnard.bsky.social

#Cirrusclouds tend to warm the climate: #stratusclouds tend to cool the climate; #cumulusclouds are often radiatively neutral. Cambridge Prof @michaelherzog.bsky.social on cloud atmospheric physics at #ArcticRepair2025.com. So we might seed marine stratocumulus w sea salt aerosols for cooling. #mcb