The strong pressure gradient between a cut-off cyclone over N Africa and a cold anticyclone over eastern Europe will lead in the next few days to very strong SE winds and heavy precipitation over southern Italy and Spain. The whole western Mediterranean will feel it! 🌀⛈️🌬️🌊 Plots: charts.ecmwf.int

In only 8 days, it is EGU26 submission deadline! 🚨 If your work involves Rossby waves, jet streams and extreme weather/climate events, consider submitting your abstract to the "Atmospheric Rossby Waves and Jet Dynamics" session! 🌬️〰️🌀 Invited speaker this year: Dr. Philipp Breul (University of Köln)

An interesting new project about the physical and dynamical processes behind extreme windstorms in present and future climate 🌬 at @unirdg-artcol.bsky.social Consider applying if you are interested!

"Sycophancy essentially means that the model trusts the user to say correct things,” says Jasper Dekoninck, a data science PhD student at the Swiss Federal Institute of Technology in Zurich".

Cette carte est unique au monde. Après plusieurs mois de modélisation, AgroClimat2050 dévoile une 1ère mondiale : la biogéographie future (c’est-à-dire l’aire de répartition) de l’une des 🍎 les + consommées au monde (Golden) grâce à un modèle agroclimatique qui n'a pas d'équivalent en Europe. 1/7

Storm Boris hit central Europe with extreme precipitation in September 2024: how will this event look like in a warmer climate? 🌧🌡 Many different, but equally correct answers can be given! Discover the nuances in our new work, now in open discussion at egusphere.copernicus.org/preprints/20...

Bref coup de chaud mardi&mercredi associé a une dépression "pompe a chaleur" au large du Portugal #PlumeDeChaleur, puis probable mise en place d'un très puissant #DomeDeChaleur (fort anticyclone) pour la fin du moins de Juin avec persistance de chaleur extrême (Sud 🇫🇷). Effrayant mais pas surprenant!

Under pressure from the Trump administration, the National Science Foundation (NSF), a $9 billion agency funding scientific research that has made America great, has canceled over a thousand grants and slowed new funding. That's just the beginning and will get way worse unless Congress intervenes.

Dear weather and climate dynamics enthusiasts, an exciting session with 24 contributions (orals+posters) awaits you at EGU25 **tomorrow**, Monday 28.05, from 14 to 18 in rooms M1 and X5. Hope to see many of you there at the "Atmospheric Rossby Waves and Jet Dynamics" session! 🌬️〰️🌀

An incredible view of a dust storm charging south across Mexico.

Première #galerne (coup de vent brutal sur Pays Basque/Sud Landes) ce soir 18 Avril autour de 19h avec rafales locales proches de 100km/h. Renversement/renforcement extrêmement rapide des vents au passage d'un front orageux après belle journée de chauffage (Température ~25°C dans le Sud-Ouest) 1/

Doppler radars for tornado and severe weather rapid warnings, hurricane hunters' flights for improved track and intensity forecasts, weather and climate models used by many stakeholders... NOAA excellence and contribution to society are under threat. Full support to it and to @ametsoc.org effort!

One of a meteorologist’s biggest pet peeves is “my app says it’ll be ____”. Weather apps can miss so many details that a meteorologist will know. Let’s use tomorrow in NYC — my app says it’ll be 78 degrees but rainy. But is that the full story? Spoiler alert… no, it’s not!

From life-saving weather warnings and cancer treatments to tech breakthroughs, federally funded science drives progress. In an open letter, the AMS urges strong federal science funding to ensure our future. More: bit.ly/4j6rQGZ

🧵: I am getting texts on what scientists should do in this perilous and scary moment. My advice: your biggest power is to organize through your professional societies. A few ideas -

🚨Paper alert 🚨 Do you wonder about how emotions influence climate-friendly outcomes? @kimdoell.bsky.social and I have analyzed how 8 emotions influence climate beliefs, climate policy support, sharing climate messages, and climate behavior across 63 countries. We found that... 1/

129 cm di neve in 12 ore a Obihiro (Hokkaido), nuovo record nazionale. A record-breaking 1.29m of snow fell in Obihiro, Japan, within just 12 hours on February 4, 2025, setting a new national record for 12-hour snowfall and leaving cars stranded in deep snow. 1/2 watchers.news/2025/02/04/j...

Aumento de las frecuencias de bloqueo en simulaciones de modelos climáticos idealizados de muy alta resolución, por @bernat_jimenez igeo.ucm-csic.es/aum... #IGEOinvestiga

Interesting read! There are many neopositivist and even "messianic" expectations about AGI, I hope we will soon have more realistic expectations about that "bubble", too.

It's no exaggeration to say today brought a truly historical weather event to the Gulf Coast - lots of places all the way down to the water got over 6-8 inches of snow, shattering records going as far back as 1895 in some places. Let's review what caused this historic event 🧵

It is high time to meditate on the effect that North American conditions can have on Europe (and not only from a meteorological viewpoint!) In the current event, I like how it is the same trough now above the southern US that moves over the Atlantic to support the strong Atlantic cyclogenesis 🌀

📢 Extended abstract submission deadline for the storm tracks workshop! 📢 15 Jan. 2025 -> 20 Jan. 2025 A very focused meeting, bringing together many experts of storm tracks and extratropical dynamics 🌦 I attended the previous one and can only recommend it 🙂

Very interesting review co-authored by @usyseth.bsky.social profs @manuelaibrunner.bsky.social and A. Prein about the increasing "hydroclimatic volatility", aka sudden transitions from drought to flooding or vice versa. Water cycle gets faster in a warmer climate!🌡🌧🔄 www.nature.com/articles/s43...

The fires ravaging the outskirts of Los Angeles are driven by anomalously strong easterly winds, locally known as 'Santa Ana winds". Low-level winds speeds over the area exceed 5 standard deviations in anomaly (though wind speed is not gaussian, but ok). But why are they so strong?

In 10 days, it is EGU25 submission deadline! 🚨 If your work involves large-scale dynamics and extreme weather/climate events, then consider submitting your abstract to the "Atmospheric Rossby Waves and Jet Dynamics" session! 🌬️〰️🌀 Invited speakers: Peiqiang Xu (IAP) and Talia Tamarin-Brodsky (MIT)!

New evidence that it was the economic vibes, stupid open.substack.com/pub/paulkrug...

Very interesting! A "red" weather alert might now have a direct effect on the GDP 🚨 An even greater responsibility for @aemet.extwitter.link and civil protection bodies. It will be an occasion to further refine the national warning system, while making Spain more resilient to climate change 🌦

Redrawing the global warming stripes. In a new paper led by Sebastian Sippel published in Nature today, we show that the early 20th century global ocean surface temperatures and thereby global mean surface temperature were warmer than previously thought. Thread... (1/13)

The 942hPa "bomb" cyclone roaring tonight off the west coast of N. America features a clear warm seclusion, making it a "warm-core" storm of non-tropical nature. Downward-bending isentropes mark the warm core at the center. Winds around it decrease with height, following the thermal wind law (1/7)

30-sec time lapse of a rain shower in the wake of ex-Kirk, taken from my office in #Zurich

WV RGB loop of Helene's extratropical transition.

Check out our new perspective piece published this week, which dives into an early career view on the importance of supporting and training scientists for interdisciplinary work in the rapidly growing field of extreme weather and climate event research... #OpenAccess Paper: doi.org/10.1002/asl....

Bluesky now has over 10 million users, and I was #2.247.128! 🦋🦋🦋🦋🦋

Cyclone Boris is affecting the weather of Eastern Europe for the next few days, bringing exceptional rainfall to Austria, Czech Republic and the neighboring countries. 🌧☔️🌫❄️ A thread with some meteorological aspects of this storm I found fascinating:

Impressions from the European Met Society meeting #EMS2024 in Barcelona Great venue, interesting talks, amazing colleagues :)

A strong upper-level ridge (500 hPa height > 5900 gpm) will bring a sunny and very warm summer weekend to central Europe. By Saturday evening, the 'heat dome' will center over the Alps, with freezing levels exceeding 5000 meters!

🚨Our new paper about barotropic Rossby wave dynamics and waveguidability is finally out on EGU Weather and Climate Dynamics! 🎇🌬️〰️ It took more than one year of review, but only now I realize why: this work actually consisted of three mini-papers in one 🧵(1/12) t.co/NIov1zZc8p

A one-year old article already, but still an interesting Sunday read: WMO weathered the cold war, but can it survive capitalism? eos.org/features/wmo...

This radar loop begins when #Beryl made landfall and spans 21 hours: bmcnoldy.earth.miami.edu/tropics/bery... It illustrates the nearly 100 tornado warnings (red polygons) that were issued as the rainbands moved inland... and as usual, the vast majority occurred in the storm's front-right quadrant.

A record-breaking 1052 hPa Azores high is expected tonight over the Central North Atlantic. Such an extreme anticyclone is tied to the extreme rains observed over the eastern US in the last few days. A short thread with some weather maps by @burgwx.bsky.social and Alicia Bentley (1/N)

We are very glad to announce the "Atmospheric Rossby waves and Jet Dynamics, and their Impacts on Extreme Weather and Climate Events" session at #EGU24! This year, Prof. Tiffany Shaw (@GeoSci_UChicago) will participate as invited speaker. Abstracts: meetingorganizer.copernicus.org/EGU24/session/…

Call for papers for a Special Issue of Weather on Storm Ciarán 🌀 and the Jersey tornado 🌪️ rmets.onlinelibrary.wiley.com/journal/1477...