Ales Kuchar

A: Zonal mean weighted average for latitudes between 60–90◦N of water vapour volume mixing ratio (VMR; shading and contour of 1 ppmv; monthly) anomalies for the extended winter 2024/2025 from MLS. Anomalies are expressed as differences with respect to the climatology for the period 2006–2020. Due to missing data, water vapour is visualized as monthly anomalies with interpolated gaps. Due to a retrieval artifact in the 10–8 hPa layer we smoothed the data vertically. B: The average (east-west) zonal wind for 60◦N at 10 hPa for the extended winter 2024/2025 (OW3) in MERRA2. This is near the peak of the polar jet maximum.

🚨New preprint alert!🚨 Was the strengthening of the Northern polar vortex in 2024/2025 associated with the Hunga Tonga #volcano? Our research using models and obs links descending volcanic water vapor plumes to the record-strong 2024/2025 Northern #PolarVortex
egusphere.copernicus.org/preprints/20...

Important note for non-academics: you do not get tenure or promotion for pre-prints. You need published peer reviewed articles.

V tomhle smeru muze pomoci remen misto retezu, baterii a cyklo pocitac vzdy skladovat uvnitr...

Je to kolo urcene do mesta. Tezko tedy ocekavat, ze na parkovani bude mit kazdy k dispozici garaz. My podobne parkujeme na ulici. Se silnym zamkem a pojistenim jsme klidnejsi. Neprizen pocasi se da resit plachtou 😉

Does anyone know how to access the 10 hPa ECMWF forecast data?

With ecmwf-opendata, it seems I can only get up to 50 hPa.

Thanks!

I appreciate that monthly and seasonal forecasts produced using CanSIPSv3 will become available on ClimateData.ca starting January 26th, 2026.

We are currently advertising a four-year fully-funded* PhD project on if we can use stratospheric waves to predict hurricanes and typhoons earlier. If you or someone you know would be interested in this, please get in touch!

www.findaphd.com/phds/project...

* for UK students only, unfortunately

Enjoy it!

Today at @agu.org the long-awaited report on global atmospheric impacts has been released. Kudos to all authors - tremendous work!

See the document here: aparc-climate.org/publications...
Press conference here: www.youtube.com/watch?v=l-Re...

#WCRP #APARC #ClimateScience #HungaEruption #volcano

Twenty 4-Year #Postdoct Positions for Female Researchers at the @univie.ac.at

Are you a female postdoctoral researcher interested in pursuing independent research at one of Europe’s leading universities? Don’t miss the opportunity to apply to the #ESTEEM:

careers.univie.ac.at/en/postdoc/e...

pro srovnani Viden: presse.wien.gv.at/presse/bilde...

If you would like to collaborate on Tonga's impact, please let me know ;)

Sudden 30 °C temperature rise over Antarctica upends Australia's spring outlook
www.abc.net.au/news/2025-09-26/weather-pattern-could-disrupt-australia-for-months/105817572
www.youtube.com/watch?v=iYWj...

Heat Spurs Unequal Consumption of Sweet Treats - Eos A new analysis shows warmer weather may drive more added sugar consumption, particularly among already-vulnerable groups.

Each degree of warmer weather leads to more added sugar consumption for the average adult male in the U.S. Climate change will intensify the issue.

Are those simulations (at least several variables) publicly available?

Kidical mass

Kidical mass

Mark your calendars! On 10 May, the Grätzl Kidical Mass rolls through Vienna! 🚲🇦🇹🥳Join us for a fun, safe bike ride with kids and families—reclaiming our streets for the next generation. Let’s make cycling visible, joyful, and loud! See you there! #KidicalMass #Vienna

Introducing Notebook Intelligence! I am thrilled to announce the release of Notebook Intelligence! NBI is an AI coding assistant for JupyterLab powered by GitHub Copilot…

If you are a JupyterLab user: blog.jupyter.org/introducing-...

A greater awareness and scrutiny of the upper atmosphere is a must to inform on impacts and future regulation of satellite reentry. Let’s hope upcoming missions like the European www.cairt.eu and similar US missions go forward.

V češtině zde: ct24.ceskatelevize.cz/clanek/pocas...

Modulation of the northern polar vortex by the Hunga Tonga–Hunga Ha'apai eruption and the associated surface response Abstract. The January 2022 Hunga Tonga–Hunga Ha’apai (HT) eruption injected sulfur dioxide and unprecedented amounts of water vapour (WV) into the stratosphere. Given the manifold impacts of previous ...

Regional effects on the surface may be dynamically driven: acp.copernicus.org/articles/25/3623/2025/

Compensating atmospheric adjustments reduce the volcanic forcing from Hunga stratospheric water vapor enhancement A systematic assessment is carried out to estimate the radiative forcings from Hunga stratospheric water vapor enhancement.

Ensemble simulations of a coupled atmosphere-ocean model suggest a surface warming of 0.05 K, affirming a limited influence on global mean surface temperature from the volcanic stratospheric water vapor injection. www.science.org/doi/full/10....

Am 14. Mai, über solares #Geoengineering für die Stadt #Wien, online

Vulkanausbruch im Südpazifik beeinflusste Winterwetter in Europa. TEXT: short.boku.ac.at/92odzp001000... VIDEO: youtu.be/iwMkAvyJV9M @bokuvienna.bsky.social @sn.at #PyVista

Beautiful data-art on the cover of the European State of the Climate Report released today.

The mountainscape shows changes in European temperatures since 1940.

Designed by @annalombardi.bsky.social. #esotc

Full report: climate.copernicus.eu/esotc/2024

Our ACP Letter finally published. It introduces a novel pathway by which a massive amount of WV by the Hunga Tonga #volcano may have contributed to #PolarVortex disruptions and consequently impacted surface climate. @bokuvienna.bsky.social www.atmospheric-chemistry-and-physics.net/about/news_a...

The 2023 global warming spike was driven by the El Niño–Southern Oscillation Abstract. Global-mean surface temperature rapidly increased 0.29 ± 0.04 K from 2022 to 2023. Such a large interannual global warming spike is not unprecedented in the observational record, with a prev...

acp.copernicus.org/articles/24/...

Lusti forever ;)

Thank you for sharing. Would you be willing to share the code for educational purposes as well?

#PyVista #visualization of my left knee based on DICOM files from MRI. Amazing how easily and openly you can visualize medicine data dev.pyvista.org/api/readers/...