Lightnews — Scholar-powered news

Jacopo Riboldi @jriboldi.bsky.social · Aug 8

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...

EGUsphere - Storm Boris (2024) in the current and future climate: a dynamics-centered contextualization, and some lessons learnt

egusphere.copernicus.org

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Jacopo Riboldi @jriboldi.bsky.social · Jul 25

A question about causality: are the oceans intensifying heat inland, or are they warming as a result of the same circulation inducing heat over land? The second pathway is clear, the first not immediately obvious as sea temperature is less than land air temperature.

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Jacopo Riboldi @jriboldi.bsky.social · Jul 21

Esto no es un video del tifón, es un viejo video de una tormenta.

Reposted by Jacopo Riboldi

Christophe Cassou @cassouman40.bsky.social · Jun 23

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!

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Jacopo Riboldi @jriboldi.bsky.social · Jun 23

Yes and indeed these bullet points about inertia are nowhere to be found in the English version of Red Electrica.

Still interesting, however, that everything seems to have started from a solar power plant... and the exact cause not been found yet.

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Jacopo Riboldi @jriboldi.bsky.social · Jun 23

Interestingly yes, it seems. This is an excerpt from the conclusions (in Spanish, but I think the first sentence is still understandable).

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Reposted by Jacopo Riboldi

David Ho @davidho.bsky.social · May 1

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.

Amid DOGE-induced turmoil, National Science Foundation in crisis

The $9 billion agency, which exists solely to fund researchers, projects and facilities outside its Alexandria, Virginia, headquarters, is hitting reverse on its mission.

wapo.st

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Jacopo Riboldi @jriboldi.bsky.social · Apr 27

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! 🌬️〰️🌀

Jacopo Riboldi @jriboldi.bsky.social · Jan 6

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)!

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Reposted by Jacopo Riboldi

cira-csu.bsky.social @cira-csu.bsky.social · Apr 21

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

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Reposted by Jacopo Riboldi

Christophe Cassou @cassouman40.bsky.social · Apr 18

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)
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Jacopo Riboldi @jriboldi.bsky.social · Apr 17

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!

American Meteorological Society @ametsoc.org · Apr 17

The 2026 budget passback plan calls for eliminating NOAA Research, the scientific backbone that keeps weather forecasts, alerts, and warnings accurate and effective. This would have disastrous consequences.

Read the AMS statement, in partnership w/ @nwas.org: bit.ly/4cz2RtC

Stand Up for NOAA Research – The Time to Act is Now

The AMS is a global community committed to advancing weather, water, and climate science and service.

bit.ly

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Jacopo Riboldi @jriboldi.bsky.social · Apr 15

You are welcome :) it is algebra-based but very insightful. And free, also for your students :)

In case you need to deepen more specific topics just let me know, and I can easily refer to more advanced tomes.

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Jacopo Riboldi @jriboldi.bsky.social · Apr 15

www.eoas.ubc.ca/books/Practi...

Practical Meteorology An Algebra-based Survey of Atmospheric Science - version 1.02b. isbn 978-0-88865-283-6

www.eoas.ubc.ca

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Reposted by Jacopo Riboldi

Tomer Burg @burgwx.bsky.social · Mar 28

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!

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Reposted by Jacopo Riboldi

American Meteorological Society @ametsoc.org · Mar 25

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

Science Helps You Thrive: Strong U.S. Scientific Leadership Raises Us All

The AMS is a global community committed to advancing weather, water, and climate science and service.

bit.ly

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Jacopo Riboldi @jriboldi.bsky.social · Mar 18

In Svizzera si puoʻ essere un vero "Eidgenosse" (un "confederato") o magari più informalmente un "Bünzli" 🇨🇭

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Reposted by Jacopo Riboldi

Miriam Goldstein @miriamgoldstein.bsky.social · Jan 23

🧵: 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 -

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Reposted by Jacopo Riboldi

Tobia Spampatti, PhD @tspampatti.bsky.social · Feb 19

🚨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/

OSF

osf.io

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Reposted by Jacopo Riboldi

Giulio Betti @giuliofirenze.bsky.social · Feb 10

www.theguardian.com/us-news/2025...

Doge staffers enter Noaa headquarters and incite reports of cuts and threats

Members reportedly sought access to IT systems at agency that Project 2025 has called ‘harmful to US prosperity’

www.theguardian.com

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Reposted by Jacopo Riboldi

Giulio Betti @giuliofirenze.bsky.social · Feb 6

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...

Japan sets new national 12-hour snowfall record with 1.29 m (4 feet) in Hokkaido

A record-breaking 1.29 m (4 feet) 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.

watchers.news

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Reposted by Jacopo Riboldi

Instituto de Geociencias (CSIC-UCM) @igeociencias.bsky.social · Jan 28

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

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Jacopo Riboldi @jriboldi.bsky.social · Jan 27

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.

Karen Hao @karenhao.bsky.social · Jan 27

As someone who has reported on AI for 7 years and covered China tech as well, I think the biggest lesson to be drawn from DeepSeek is the huge cracks it illustrates with the current dominant paradigm of AI development. A long thread. 1/

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Reposted by Jacopo Riboldi

Tomer Burg @burgwx.bsky.social · Jan 22

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 🧵

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Jacopo Riboldi @jriboldi.bsky.social · Jan 21

This drastic circulation change indicates that the large-scale flow configuration has to be fully reconfigured over the North Atlantic after the cold spell.

Does such a pattern shift happen as a result of the cold spell, or is the cold spell a byproduct of it? That's an open question imo. (4/4)

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Jacopo Riboldi @jriboldi.bsky.social · Jan 21

The risk of windstorms over the North Sea region remains significantly high up to 7-10 days after the cold spell.
This is consistent with the zonal flow pattern expected in the next few days over the North Atlantic and "seen" by medium-range models. (3/4)

bsky.app/profile/simo...

Simon Lee @simonleewx.com · Jan 16

After the Alaskan Ridge, forecasts are very confident in a prolonged Pacific Ridge regime. This regime can instead bring some of the warmest winter conditions to the eastern US, which may lead to a "weather whiplash" in some regions.

simonleewx.com/gefs_north_a...
simonleewx.com/ecmwf_north_...

GEFS ensemble weather regime plot showing a transition from AK Ridge to Pacific Ridge.

ECMWF ensemble weather regime plot showing a transition from AK Ridge to Pacific Ridge.

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