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Blaž Gasparini @blazgaspa.bsky.social · 3d

Made it to Kiruna to join the U Oslo's CELLO Arctic EarthCARE validation campaign for a week
www.mn.uio.no/geo/english/...

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Blaž Gasparini @blazgaspa.bsky.social · 6d

Some more memories from my September mountain trip and mountain boundary layer: clouds filling the valley and climbing up toward us

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Blaž Gasparini @blazgaspa.bsky.social · 8d

Look at all those anvil top turbulence!

Robin Hogan @robinjhogan.bsky.social · 9d

The level of detail revealed by EarthCARE is amazing: as well as the usual change in vertical Doppler velocity as snow melts to rain, we can see the rising air in the eye wall! The imager also captures the 3D nature of the convective cells in the rain bands further out. More analysis to come...

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Reposted by Blaž Gasparini

Clemens🇪🇺 @alpenwetter.bsky.social · 18d

Schöne Kollektion an #Föhnfischen heute am Himmel. Der #Föhn machts möglich.

Durch die vom starken Wind ausgelöste Wellenbewegung entstehen diese linsenförmigen Wolken, die scheinbar für mehrere Stunden an Ort und Stelle „stehen“.

#Lenticularis #AcLen #AltocumulusLenticularis

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Blaž Gasparini @blazgaspa.bsky.social · 23d

Finally, coming back to the evolution and the journey of ice crystals. We can tear that apart with the help of the "time after convection tracer". Caveat: Can we do something similar with observations? Such analysis will become even more useful at that point [I don't have a good answer to this one]

Blaž Gasparini @blazgaspa.bsky.social · 23d

We can tear the origins apart. The model produces lots of situ cirrus, but they are very thin, contributing only a little to the total TOA energy budget.

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Blaž Gasparini @blazgaspa.bsky.social · 23d

But the novelty here is the use of passive tracers to get to:
1. anvil cloud "age"
2. distinguish between convective-origin (anvils) and in situ origin cirrus (formed by ice nucleation on gravity waves)

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Blaž Gasparini @blazgaspa.bsky.social · 23d

But only proper input, particularly updrafts in combination with humidity, can lead to reasonable cloud properties. If you are interested in thin cirrus, you may need to go to well beyond km scales to get that right. For fresh anvils, however, 1-4 km may be sufficient (not shown here).

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Blaž Gasparini @blazgaspa.bsky.social · 23d

We achieved that in 3 steps that basically don't add up any additional cost to the model. All just quick fixes, not super novel, but simple to implement so you may want to do something similar (or better?)!

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Blaž Gasparini @blazgaspa.bsky.social · 23d

We are happy with the updated SAM-P3ice cloud-resolving model's ability to simulate tropical cirrus (both convective and non-convective = in situ origin)

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Blaž Gasparini @blazgaspa.bsky.social · 23d

Here the teaser movie...see later more for explanation

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Blaž Gasparini @blazgaspa.bsky.social · 23d

We studied the journey of ice crystals from deep convective cores to thin cirrus (and those formed by ice nucleation too) in a km-scale model
acp.copernicus.org/articles/25/...
@univie.ac.at

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Blaž Gasparini @blazgaspa.bsky.social · 23d

Great to see this article! We’re also happy to have @claudiablaas.bsky.social supporting us with teaching, running climate model simulations on an HPC system, and guiding us through ASC. Her involvement is certainly an inspiring example for our female students.

TU Wien @tuwien.at · 24d

„Sei mutig, glaube an dein Potenzial, bleib neugierig“: Das rät Claudia Blaas-Schenner allen jungen Kolleginnen, die eine Karriere im High-Performance Computing (HPC) anstreben.
Zum Interview im Blog von @eurocc-austria.at: eurocc-austria.at/blog/sei-mut...

„Sei mutig, glaube an dein Potenzial, bleib neugierig“

"Supercomputing ist nur etwas für Männer": Der Mythos hält sich hartnäckig. Physikerin und HPC-Pionierin Claudia Blaas-Schenner ist eine jener Frauen, die dieses Märchen ohne viel Getöse auflöst. Waru...

eurocc-austria.at

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Blaž Gasparini @blazgaspa.bsky.social · 24d

Last week at the Italy–France border: moist valley air rising and forming near-surface clouds, while a higher cloud layer (with a cloud base of around 3,500 metres) tries to grow by convection, but fails to reach the rain stage. Beautiful!

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Reposted by Blaž Gasparini

Andrew Dessler @andrewdessler.com · Sep 4

nice article from Nadir Jeevanjee (is he on bluesky?) about predictions climate models got right. successful predictions are the gold standard of science.

5 forecasts early climate models got right – the evidence is all around you
theconversation.com/5-forecasts-...

5 forecasts early climate models got right – the evidence is all around you

From rising global temperatures to the fast-warming Arctic, early climate models predicted the changes half a century ago.

theconversation.com

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Blaž Gasparini @blazgaspa.bsky.social · Aug 26

tomorrow at 19.00!

Blaž Gasparini @blazgaspa.bsky.social · Aug 20

Next Wednesday (27.8.) we're having a very diverse and hopefully interesting panel discussion on solar geoengineering within the ICNAA conference, 19.00 at Palais Eschenbach, welcome!

Faculty of Physics - University of Vienna @univie-physik.bsky.social · Aug 5

Event:
Do we need to darken the sun? Solar radiation management as a solution to the climate crisis?

Public event of the 22 ICNAA, co-organized by Prof. Paul Winkler.

📆Wednesday, 27 August 2025 19:00
📍Palais Eschenbach, Eschenbachgasse 11, 1010 Vienna
🔗https://physik.univie.ac.at/events/

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Blaž Gasparini @blazgaspa.bsky.social · Aug 21

Thanks for sharing these beautiful pictures, nice clouds, nothing unusual about them, no reason to worry...

Blaž Gasparini @blazgaspa.bsky.social · Aug 20

Hey Erich, nobody is artificially spraying the sky to my knowledge. However, sometimes, there's either human-made or natural pollution up there, causing nice colorful sunsets. No evil involved. Recently getting often some Canadian wildfire smoke here, for example. www.derstandard.de/story/300000...

Waldbrände in Kanada sorgten für diesigen Himmel über Österreich

Die milchiggrauen Schleier, die den Himmel über dem Alpenraum eintrübten, kamen von besonders weit her. Die Luftqualität in Bodennähe war nicht beeinträchtigt

www.derstandard.de

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Blaž Gasparini @blazgaspa.bsky.social · Aug 20

Next Wednesday (27.8.) we're having a very diverse and hopefully interesting panel discussion on solar geoengineering within the ICNAA conference, 19.00 at Palais Eschenbach, welcome!

Faculty of Physics - University of Vienna @univie-physik.bsky.social · Aug 5

Event:
Do we need to darken the sun? Solar radiation management as a solution to the climate crisis?

Public event of the 22 ICNAA, co-organized by Prof. Paul Winkler.

📆Wednesday, 27 August 2025 19:00
📍Palais Eschenbach, Eschenbachgasse 11, 1010 Vienna
🔗https://physik.univie.ac.at/events/

Events

physik.univie.ac.at

Blaž Gasparini @blazgaspa.bsky.social · Jul 29

Paul Winkler and me talked about clouds and aerosols, which ended up in a nice short article put together by Thomas Zauner for the @univie.ac.at Environment and Climate Research Hub.
ech.univie.ac.at/story/cloud-...

Cloud Power: How the Sky Shapes Our Climate - ECH

Almost every day, we can see clouds in the sky, but rarely we are aware of their wide-ranging impact on the climate. They can both raise and drop temperatures and have complex interactions with the pa...

ech.univie.ac.at

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Reposted by Blaž Gasparini

Tanja Malle @scharlatanja.bsky.social · Jul 29

Am Peršmanhof hat ein SS Polizeiregiment vier Erwachsene & sieben Kinder niedergemetzelt.

80 Jahre später in der Gedenkstätte:
Polizei brüllt mit Hand an der Waffe rum.

Videos: ZiB 1 & Dnevnik (die wesentliche Nachrichtensendung in SLO):

on.orf.at/video/142854...

365.rtvslo.si/arhiv/dnevni...

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Reposted by Blaž Gasparini

Lukas Brunner @lukasbrunner.bsky.social · Jul 28

Vor einigen Wochen durfte ich im Rahmen des Formats Vorlesung für Alle der @uni-hamburg.de einen Vortrag zu Temperaturextremen geben. Die Aufzeichnung ist jetzt auf YouTube 👇 Danke für die Einladung und das Interesse!
youtu.be/0KGi4Y6J2Ls?...

Vorlesung für alle - Wie ändern sich Wetterextreme mit dem Klimawandel?

YouTube video by Universität Hamburg

youtu.be

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Reposted by Blaž Gasparini

Teresa Wirth @diewirthin.bsky.social · Jul 28

Hätte da einen Veranstaltungstipp für diverse Kärntner Beamte: #persmanhof

„Hinschaun! Poglejmo. ist die Aufforderung, einen unverstellten Blick auf die NS-Herrschaft in Kärnten zu werfen und sich mit verdrängten Aspekten der eigenen Geschichte zu befassen.“
landesmuseum.ktn.gv.at/ausstellunge...

Kärnten und der Nationalsozialismus | Koroška in nacionalsocializem

Sonderausstellung

09.05.–26.10.2025 | kärnten.museum Klagenfurt

Hinschaun!
ist die Aufforderung, einen unverstellten Blick auf die NS-Herrschaft in Kärnten zu werfen und sich – 80 Jahre nach dem Ende des Zweiten Weltkrieges – mit verdrängten Aspekten der eigenen Geschichte zu befassen.

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Reposted by Blaž Gasparini

Ferris Jabr @ferrisjabr.bsky.social · Jul 25

Earlier this year I traveled to Australia to report on a unique, localized geoengineering effort: Scientists are investigating whether they can help save the Great Barrier Reef by changing the weather, generating fog and brightening clouds
@nytimes.com Magazine 🎁 www.nytimes.com/2025/07/25/m...

The Manmade Clouds That Could Help Save the Great Barrier Reef

www.nytimes.com

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Blaž Gasparini @blazgaspa.bsky.social · Jul 24

Nice storm over Vienna now, though with some more rotation at low levels could be even nicer...

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