Lmst

@kurtus51 Der #Jetstream ist normalerweise ein meist geradliniges Starkwindband mit 200–400 km/h (Spitzen teilweise weit über 500 km/h), das Polarluft von gemäßigter Luft trennt.
Die derzeitige Windgeschwindigkeit beträgt teilweise nur noch 100- 250 km/h. Dadurch mäandert er, bekommt diese „Wellen“ und Kaltluftblasen brechen nach Süden aus.

https://www.ventusky.com/de/wind-karte/10hpa-30000m#p=31;-15;1&t=20260203/1800

@kurtus51 Die aktuelle Kältewelle kommt vom gestörten Polarwirbel (Jetstream). Die rapide erwärmte Arktis verringert den Temperaturkontrast zur gemäßigten Zone, so dass der Jetstream schwächer wird und die eisige Polarluft nach Süden ausbrechen kann. #Klimawandel #Jetstream

Starke #Winterkälte in Europa und den USA trotz #Erderwärmung lässt sich durch einen gestörten #Polarwirbel erklären.

Ein Wärmeereignis in der arktischen #Stratosphäre schwächte die #Ringströmung, arktische #Kaltluft konnte weit nach Süden vordringen. Der #Jetstream verstärkte zusätzlich #Schneefall und #Sturm. Solche #Extremwetterlagen werden seltener, aber intensiver.

https://www.scinexx.de/news/geowissen/woher-kommt-die-winterkaelte-trotz-klimawandel/

#Klimawandel #Wetter #atmosphere #environment #climatechange

Yes, #climatechange can supercharge a #winter storm. Here’s how.
If it feels like you’re at North Pole, it’s because you kind of are. Swirling high above Arctic is very cold air known as the #polarvortex. This is encircled, and typically trapped, by a strong wind pattern called a #jetstream, which is at a lower level in atmosphere. That separates cold air in Arctic from warmer air to south. Research suggests the jet stream has been weakening of late, making it wobblier.
https://grist.org/climate/yes-climate-change-can-supercharge-a-winter-storm-heres-how/

That's right, and we need to start talking about disruptions to the #jetstream and #climatechange
https://gothamist.com/news/new-yorkers-begin-to-lose-hope-as-freeze-sets-in-and-snow-turns-gray
More here https://yaledailynews.com/articles/weather-fits-climate-forecasts-of-more-freak-storms-less-total-snow #blizzard #brooklyn #nyc

#PreventionWeb #ExtremeWeather #coldsnap #jetstream #PolarVortex

Barlow & Cohen 24 January 2026

How the polar vortex and warm ocean are intensifying a major US winter storm

https://www.preventionweb.net/news/how-polar-vortex-and-warm-ocean-are-intensifying-major-us-winter-storm

#climate #ClimateScience #ClimateChange #ClimateEmergency #ClimateCrisis #ClimateBreakdown #ClimateDisruption #polycrisis

RE: https://mastodon.social/@paulbeckwith/115976162498918819

#FYI #PaulBeckwith video lecture #ExtremeWeather #coldsnap #jetstream #PolarVortex

Paul explains the causes and effects of the extreme #coldstorm over northern #America

#climate #ClimateScience #ClimateChange #ClimateEmergency #ClimateCrisis #ClimateBreakdown #ClimateDisruption #globalWarming #polycrisis

#vereinfachteSprache

Der Jetstream wird langsamer durch die globale Erwärmung.

Nanu, was ist denn überhaupt der Jetstream? Und ist ein schwacher #Jetstream jetzt gut oder schlecht für uns? Schau dir an, wie der #Klimawandel unser #Wetter dadurch beeinflusst und was das bedeutet.

https://www.oekologisch-unterwegs.de/klimawissen-vereinfachte-sprache/1237-durch-die-globale-erwaermung-weht-der-jetstream-langsamer-und-wir-bekommen-mehr-wolkenbrueche-und-duerre-vereinfachte-sprache.html

#Extremwetter #Überschwemmung #Platzregen #Trockenheit

Manchester Monday 3 19th January 2026.

G-AXUI, Handley-Page HP-137 Jetstream Mk.1, Cranfield University, taxiing in after landing at the British Aerospace plant at Woodford, 25th March 1993.

#Manchester #Woodford #EGCD #BritishAerospace #HandleyPage #HP137 #Jetstream #Cranfield #ManchesterMonday
#Avgeek #aviation #planespotting #photography

Side view of a white and grey, twin propellor-engined airliner taxiing from left to right.
The plane has white upper surfaces and grey lower surfaces, with a pale blue stripe running along the body, and black "Cranfield" titles on the upper rear fuselage.
There is a diagonal orange stripe on the tail, with the black registration "G-AXUI" passing through the base.
The wing-mounted engine pods are dark blue, almost purple.
Green grass fills the foreground. With more grass in the background leading up to trees in the distance, with tree-covered rolling hills beyond that.
Grey sky fills the rest of the frame.

Manchester Monday 19th January 2026.

[…]

https://mancavgeek.co.uk/2026/01/19/manchester-monday-19th-january-2026/

Side view of a high-winged, twin propellor-engined airliner turning on to a wide, grey runway. The plane is white, with a dark blue tail and rear fuselage. No other markings are visible, apart from the yellow tips of the spinning black propellors. Green grass fills the foreground, with more grass lining the other side of the runway visible under the belly. A tall and wide terminal building stretches across the frame in the distance, under pale blue sky.

Manchester Monday 3 5th January 2026.

G-BUFL, British Aerospace Jetstream 3101, used by the manufacturer as a corporate shuttle but here operating a display flight at the Woodford Air Show, 1992 or 1993.

#Manchester #MAN #EGCD #AirShow #BritishAerospace #Jetstream #J31 #ManchesterMonday
#AvGeek #aviation #planespotting #photography

Side view of a small, white, twin propellor-engined airliner taxiing from right to left along a grey runway.
The plane is pretty much devoid of markings, apart from the black registration "G-BUFL" on the rear fuselage.
Green grass lines the sides of the runway in the foreground, with more grass in the background leading up to trees in the distance.
A red fire engine is on the right in the background, parked on the grass, with a white ambulance next to it partly hidden behind the plane.

Manchester Monday 5th January 2026.

[…]

https://mancavgeek.co.uk/2026/01/05/manchester-monday-5th-january-2026/

Side view of a white, 4 engined jet airliner taxiing from right to left along a grey taxiway. The plane has a grey and dark blue stripes running along the body, swooping up over the wing and back down again, and a smaller, similar stripe on the white tail. The engine pods under the wings are s deep blue, almost purple. The black registration "CS-TFX" is on the upper rear fuselage. Green grass fills the foreground on the left, with a black taxiway with a yellow line down the middle on the right. Grey airport buildings fill the background, with tall lighting towers climbing into the blue sky.

#JetStream #PolarVortex #NorthPole #ExtremeWeather

https://earth.nullschool.net/

RE: https://mastodon.social/@paulbeckwith/115754906378289134

#FYI #PaulBeckwith video lecture and literature review
#JetStream #PolarVortex #NorthPole #ExtremeWeather

Beckwith, Paul Beckwith, investigating.
The Suspect: Weakening of the #PolarVortex
The Crime: The latest cold outbreaks in #NorthAmerica
The Tool: Earth Nullschool (see link in 1st comment)

#climate #ClimateScience #ClimateEmergency #ClimateCrisis #ClimateBreakdown #ClimateDisruption #globalWarming #globalHeating #polycrisis

ICAO: 47183B
Flt: JSG962 #JETSTREAM
First seen: 2025-12-16 21:48:28 CET
Min Alt: 12483 m AGL
Min Dist: 15.98 km

https://globe.adsbexchange.com/?icao=47183b&lat=53.059067&lon=5.549088&zoom=12&showTrace=2025-12-16
#adsb #aboveFRL #EHLW

Vì sao máy bay bay Tây→Đông nhanh hơn Đông→Tây? Do tầng cao có dòng tia phản lực (jet stream) thổi từ Tây sang Đông, tạo gió đuôi thuận chiều cho chuyến bay Tây→Đông, giúp tốc độ tăng, tiết kiệm thời gian; chiều ngược lại gặp gió ngược nên chậm hơn. #JetStream #Tailwind #Headwind #AviaTinNhanh #TinTuc #Vietnam #VietNamNews

https://vtcnews.vn/vi-sao-may-bay-bay-tu-tay-sang-dong-lai-nhanh-hon-ar985156.html

Der #Frühling wird zunehmend trockener. In #Berlin-Brandenburg fällt seit Jahren deutlich weniger Regen in dieser Jahreszeit, während #Sonnenstunden und Temperaturen steigen.

Ursache ist der durch den #Klimawandel geschwächte #Jetstream, der stabile Hochdrucklagen begünstigt.

Das führt zu anhaltende #Dürrephasen in der sensiblen Wachstumszeit vieler Pflanzen.

https://www.rbb24.de/content/rbb/r24/panorama/beitrag/2025/10/daten-2-klimawandel-jahreszeiten-niederschlag-regen-sonne.html

#jahreszeiten #klima #frühling #landwirtschaft #wetterextreme #trockenheit #environment #climatechange

What #Pacific ‘blob’ + #LaNiña means for #winter in #US
What is clear to #meteorologists is that the Pacific #heatwave may be a significant player in influencing late fall and winter #weather patterns across large parts of the #NorthernHemisphere.
The big question mark for winter in the #UnitedStates is what the extreme #ocean heat, with water #temperatures running as much as 9 degrees Fahrenheit above average for this time of year, will do to the #jetstream.
https://www.cnn.com/2025/10/09/weather/winter-forecast-pacific-blob-la-nina-climate
#climate

Terrestrial Weather

Storm Amy is incoming and will hit northern Ireland and western Scotland on Friday.

Meanwhile, the jet stream across the Atlantic is running at a maximum of around 350km/h! No record, but for comparison, the average winter jetstream speed is around 213km/h.

#weather
#stormamy
#jetstream
#g7izu

Tree-ring data sheds light on past and present summer climate extremes

Scientists at the University of Arizona used historical tree-ring data to study a key driver for widespread, extreme summer weather events: locked jet stream wave patterns that are often preceded by winter La Niña conditions in the Pacific.

#TreeRingData #JetStream

https://news.arizona.edu/news/tree-ring-data-sheds-light-past-and-present-summer-climate-extremes

#Jetstream

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