Tanja Amerstorfer ☀️
@tamersto.bsky.social
☀️Chasing CMEs at the Austrian Space Weather Office ☀️
🏳️🌈🐴🐈🐓
🏳️🌈🐴🐈🐓
Reposted by Tanja Amerstorfer ☀️
Here is todays Nov 14 #solarstorm (NOT Earth directed 🙃) in its full glory - it has one super interesting feature concerning future #spaceweather missions!
Guess which 🤔
First the solar source as imaged in extreme ultraviolet by NASA/SDO:
Guess which 🤔
First the solar source as imaged in extreme ultraviolet by NASA/SDO:
November 14, 2025 at 3:27 PM
Here is todays Nov 14 #solarstorm (NOT Earth directed 🙃) in its full glory - it has one super interesting feature concerning future #spaceweather missions!
Guess which 🤔
First the solar source as imaged in extreme ultraviolet by NASA/SDO:
Guess which 🤔
First the solar source as imaged in extreme ultraviolet by NASA/SDO:
Reposted by Tanja Amerstorfer ☀️
A shock arrived Nov 12 7:32 UT at Solar Orbiter, from the early Tue Nov 11 X5 flare #solarstorm. Reminder: SolO is at 17.5° east, 10.3° north of Earth, 0.83 au, so our forecast should be taken with a grain of salt as its quite a bit away from the Sun Earth-line - it will not fully match L1 data.
November 12, 2025 at 1:32 PM
A shock arrived Nov 12 7:32 UT at Solar Orbiter, from the early Tue Nov 11 X5 flare #solarstorm. Reminder: SolO is at 17.5° east, 10.3° north of Earth, 0.83 au, so our forecast should be taken with a grain of salt as its quite a bit away from the Sun Earth-line - it will not fully match L1 data.
Reposted by Tanja Amerstorfer ☀️
The #northernlights were also seen at the Sonnblick Observatory from the GeoSphere Austria early on Nov 12 2025!
credits: Herman Scheer / foto-webcam.eu
credits: Herman Scheer / foto-webcam.eu
November 12, 2025 at 7:46 AM
The #northernlights were also seen at the Sonnblick Observatory from the GeoSphere Austria early on Nov 12 2025!
credits: Herman Scheer / foto-webcam.eu
credits: Herman Scheer / foto-webcam.eu
Reposted by Tanja Amerstorfer ☀️
Resulting in a massive maximum total magnetic field of 63 nT, presumably the #solarstorm from Monday morning arrived 2025 Nov 11 23:38 at L1, and interacted with the previous storm just before it arrived at the L1 point near Earth. Dst reached - 238 nT, which is the 3rd strongest storm of this cycle
November 12, 2025 at 7:39 AM
Resulting in a massive maximum total magnetic field of 63 nT, presumably the #solarstorm from Monday morning arrived 2025 Nov 11 23:38 at L1, and interacted with the previous storm just before it arrived at the L1 point near Earth. Dst reached - 238 nT, which is the 3rd strongest storm of this cycle
Reposted by Tanja Amerstorfer ☀️
We are waiting for the arrival of both #solarstorms at the @esa.int #SolarOrbiter spacecraft. Its magnetometer could measure their internal magnetic field which can improve our forecasts. It is a bit away from the Sun-Earth line at 10° north / 18° west but at a good distance of 0.83 au from the ☀️
👇
👇
November 11, 2025 at 9:28 AM
We are waiting for the arrival of both #solarstorms at the @esa.int #SolarOrbiter spacecraft. Its magnetometer could measure their internal magnetic field which can improve our forecasts. It is a bit away from the Sun-Earth line at 10° north / 18° west but at a good distance of 0.83 au from the ☀️
👇
👇
Reposted by Tanja Amerstorfer ☀️
The source region of both #solarstorms, one from early Sunday Nov 9, and the other from early Monday Nov 10, are (as usual) complex. Judging from the main neutral line, where the +/white, and -/black magnetic fields meet, we may expect a magnetic field rotation as south-east-north (SEN) or ENW.
November 11, 2025 at 9:37 AM
The source region of both #solarstorms, one from early Sunday Nov 9, and the other from early Monday Nov 10, are (as usual) complex. Judging from the main neutral line, where the +/white, and -/black magnetic fields meet, we may expect a magnetic field rotation as south-east-north (SEN) or ENW.
Reposted by Tanja Amerstorfer ☀️
#solarstorm update 💥 - the CME predicted to arrive early Friday, November 7th seems to have impacted L1 around 04:51 UTC today - speed around 793 km/s, Bz initially northward with strength around 13 nT and currently at -7 nT
November 7, 2025 at 8:52 AM
#solarstorm update 💥 - the CME predicted to arrive early Friday, November 7th seems to have impacted L1 around 04:51 UTC today - speed around 793 km/s, Bz initially northward with strength around 13 nT and currently at -7 nT
Congratulations, Hannah!!! 🤩
@hannahruedisser.bsky.social
@hannahruedisser.bsky.social
With a bit of delay we announce also here that at the ml-helio.github.io conference in Madrid our PhD student Hannah T. Rüdisser @hannahruedisser.bsky.social was awarded with the
"ML-Helio Early Career Award" for her contributions to AI based detection of solar storms - congrats!!
"ML-Helio Early Career Award" for her contributions to AI based detection of solar storms - congrats!!
November 7, 2025 at 7:44 AM
Congratulations, Hannah!!! 🤩
@hannahruedisser.bsky.social
@hannahruedisser.bsky.social
Reposted by Tanja Amerstorfer ☀️
We just rolled out v0h of the PUNCH data pipeline. Most of Aug and Sep are now up. By Sunday we should have reprocessed it all. The L2 data include 4-min-cadence images of 3I/Atlas for those who wish to verify it is not an alien spaceship doing maneuvers. 🧪🚀🛰️🔭☀️
punch.space.swri.edu/punch_scienc...
punch.space.swri.edu/punch_scienc...
October 30, 2025 at 10:21 PM
We just rolled out v0h of the PUNCH data pipeline. Most of Aug and Sep are now up. By Sunday we should have reprocessed it all. The L2 data include 4-min-cadence images of 3I/Atlas for those who wish to verify it is not an alien spaceship doing maneuvers. 🧪🚀🛰️🔭☀️
punch.space.swri.edu/punch_scienc...
punch.space.swri.edu/punch_scienc...
Reposted by Tanja Amerstorfer ☀️
Some impressions from day one at #ESWW2025 including first poster presentations and big congrats to long-time collaborator Erika Palmerio @erikapal.bsky.social for receiving the Alexander Chizhevsky Medal for early career scientists!
October 27, 2025 at 4:56 PM
Some impressions from day one at #ESWW2025 including first poster presentations and big congrats to long-time collaborator Erika Palmerio @erikapal.bsky.social for receiving the Alexander Chizhevsky Medal for early career scientists!
Reposted by Tanja Amerstorfer ☀️
👏 to our Satabdwa Majumdar @satabdwa.bsky.social who had an invited talk about solar wind modeling at a conference in India!
It was an honour to deliver an invited talk at the historic Vikram Sarabhai Space Centre during the international meeting “The Variable Sun: Past, Present and Future Perspectives.”
I presented our recent work from the Austrian Space Weather Office, on understanding errors in solar wind predictions.
I presented our recent work from the Austrian Space Weather Office, on understanding errors in solar wind predictions.
October 23, 2025 at 9:20 AM
👏 to our Satabdwa Majumdar @satabdwa.bsky.social who had an invited talk about solar wind modeling at a conference in India!
Reposted by Tanja Amerstorfer ☀️
There are a few rather minor #solarstorms traveling to the west of Earth at the moment, and we expect only minor effects at Earth in the next few days, starting Thursday October 16. Likely only high-latitude #aurora is possible.
However - the @esa.int #SolarOrbiter spacecraft observed them!
👇
However - the @esa.int #SolarOrbiter spacecraft observed them!
👇
October 16, 2025 at 11:21 AM
There are a few rather minor #solarstorms traveling to the west of Earth at the moment, and we expect only minor effects at Earth in the next few days, starting Thursday October 16. Likely only high-latitude #aurora is possible.
However - the @esa.int #SolarOrbiter spacecraft observed them!
👇
However - the @esa.int #SolarOrbiter spacecraft observed them!
👇
Reposted by Tanja Amerstorfer ☀️
#ThisWeek in 1991! On 2 October, Franz Viehböck became Austria's first astronaut. He was launched on Soyuz TM-13 to the Mir space station with colleagues Toktar Aubakirov and Alexander Volkov, returning on Soyuz TM-12 after just over a week in space.
@aseastronauts.bsky.social @fwf-at.bsky.social
@aseastronauts.bsky.social @fwf-at.bsky.social
October 3, 2025 at 9:34 AM
#ThisWeek in 1991! On 2 October, Franz Viehböck became Austria's first astronaut. He was launched on Soyuz TM-13 to the Mir space station with colleagues Toktar Aubakirov and Alexander Volkov, returning on Soyuz TM-12 after just over a week in space.
@aseastronauts.bsky.social @fwf-at.bsky.social
@aseastronauts.bsky.social @fwf-at.bsky.social
☀️ Final storm update: Last night’s storm intensified during the night and peaked at Dst -81 nT, considered a moderate event.
No aurora sightings have been reported in Austria.
🕐 The storm’s late arrival was likely due to interaction with an earlier CME, causing the #solarstorm to slow down.
No aurora sightings have been reported in Austria.
🕐 The storm’s late arrival was likely due to interaction with an earlier CME, causing the #solarstorm to slow down.
September 3, 2025 at 9:36 AM
Reposted by Tanja Amerstorfer ☀️
Storm update: A flux rope arrived at 10:20 UTC, raising the magnetic field strength to currently 23 nT. For now, Bz remains positive.
Rooting for a low-inclination, left-handed flux rope — that could flip Bz southward and boost #aurora chances again! ✨🤞 Stay tuned!
Rooting for a low-inclination, left-handed flux rope — that could flip Bz southward and boost #aurora chances again! ✨🤞 Stay tuned!
September 2, 2025 at 2:50 PM
Storm update: A flux rope arrived at 10:20 UTC, raising the magnetic field strength to currently 23 nT. For now, Bz remains positive.
Rooting for a low-inclination, left-handed flux rope — that could flip Bz southward and boost #aurora chances again! ✨🤞 Stay tuned!
Rooting for a low-inclination, left-handed flux rope — that could flip Bz southward and boost #aurora chances again! ✨🤞 Stay tuned!
☀️ Possible Aurora in Austria this evening (solar storm has not arrived yet) ☀️
A fast #SolarStorm is on its way! 🚨
Yesterday, 30 August, an M2.7-class solar flare peaked around 8 pm UTC, launching a CME at ~1300 km/s.
Yesterday, 30 August, an M2.7-class solar flare peaked around 8 pm UTC, launching a CME at ~1300 km/s.
September 1, 2025 at 1:47 PM
☀️ Possible Aurora in Austria this evening (solar storm has not arrived yet) ☀️
☀️
Near real time #solarwind magnetic field data by @imperialcollegeldn.bsky.social from the @esa.int Solar Orbiter 🛰️ spacecraft is available again! The probe was in a position on the solar backside as seen from Earth for the last 4 weeks (superior conjunction).
solar-orbiter.ic.ac.uk/quicklook/la...
solar-orbiter.ic.ac.uk/quicklook/la...
August 29, 2025 at 8:17 AM
☀️
Reposted by Tanja Amerstorfer ☀️
This cluster of ☀️ active regions, with sunspots showing magnetic fields in the SDO image on the left, is rotating towards Earth 🌍 in the coming week.
While the sunspot number (from SIDC Belgium, right image) made a dip in the last few months, some elevated solar activity could now be coming up. 👇
While the sunspot number (from SIDC Belgium, right image) made a dip in the last few months, some elevated solar activity could now be coming up. 👇
August 26, 2025 at 9:10 AM
This cluster of ☀️ active regions, with sunspots showing magnetic fields in the SDO image on the left, is rotating towards Earth 🌍 in the coming week.
While the sunspot number (from SIDC Belgium, right image) made a dip in the last few months, some elevated solar activity could now be coming up. 👇
While the sunspot number (from SIDC Belgium, right image) made a dip in the last few months, some elevated solar activity could now be coming up. 👇
Reposted by Tanja Amerstorfer ☀️
Academia may not give you job security, flexibility, or wealth, but it will let you unexpectedly connect to eduroam in foreign cities
August 20, 2025 at 4:58 PM
Academia may not give you job security, flexibility, or wealth, but it will let you unexpectedly connect to eduroam in foreign cities
Reposted by Tanja Amerstorfer ☀️
Over the weekend our story on new papers on AI 🤖usage for improving #solarstorm ☀️💨 images and their detection by @maikebauer.bsky.social and @lelouedecj.bsky.social has been featured on national Austrian TV (ORF2) and radio (Ö1) (both german)
TV on.orf.at/video/142878...
TV on.orf.at/video/142878...
Neue KI für Forschungen zu Weltraumwetter - Aktuell nach fünf vom 16.08.2025
Polarlichter und Sternschnuppen faszinieren seit jeher können aber GPS, Handy- und Stromnetz stören. In Graz arbeitet deshalb intensiv an der Weltraum-Wetterforschung. Dafür wird auch eine eigens entw...
on.orf.at
August 19, 2025 at 7:44 AM
Over the weekend our story on new papers on AI 🤖usage for improving #solarstorm ☀️💨 images and their detection by @maikebauer.bsky.social and @lelouedecj.bsky.social has been featured on national Austrian TV (ORF2) and radio (Ö1) (both german)
TV on.orf.at/video/142878...
TV on.orf.at/video/142878...
Proud of our project results achieved by @maikebauer.bsky.social and @lelouedecj.bsky.social 🤩
Following the evolution of solar storms in heliospheric images can now be done automatically using AI. ☀️
www.geosphere.at/en/news-and-...
Following the evolution of solar storms in heliospheric images can now be done automatically using AI. ☀️
www.geosphere.at/en/news-and-...
Artificial intelligence improves the prediction of solar storms
Two new scientific studies by GeoSphere Austria provide important contributions to the analysis and prediction of space weather.
www.geosphere.at
August 19, 2025 at 10:12 AM
Proud of our project results achieved by @maikebauer.bsky.social and @lelouedecj.bsky.social 🤩
Following the evolution of solar storms in heliospheric images can now be done automatically using AI. ☀️
www.geosphere.at/en/news-and-...
Following the evolution of solar storms in heliospheric images can now be done automatically using AI. ☀️
www.geosphere.at/en/news-and-...
Reposted by Tanja Amerstorfer ☀️
In the last 2 weeks @tamersto.bsky.social, Ute Amerstorfer, @chrisoutofspace.bsky.social and Maike Bauer (online) participated in 2 teams at @issibern.ch to work on 3D reconstructions of #solarstorms, and to improve #spaceweather forecasting from a combined heliospheric and magnetospheric view. ☀️
May 20, 2025 at 12:32 PM
In the last 2 weeks @tamersto.bsky.social, Ute Amerstorfer, @chrisoutofspace.bsky.social and Maike Bauer (online) participated in 2 teams at @issibern.ch to work on 3D reconstructions of #solarstorms, and to improve #spaceweather forecasting from a combined heliospheric and magnetospheric view. ☀️
Reposted by Tanja Amerstorfer ☀️
Check out my recent paper, just published in ApJ! ☄️
@sarahrosewatson.bsky.social has just published a nice study of how comet tail disconnections are associated with particular structures in the solar wind (the heliospheric current sheet). And how data assimilation enables us to better forecast these structures.
iopscience.iop.org/article/10.3...
iopscience.iop.org/article/10.3...
March 27, 2025 at 1:52 PM
Check out my recent paper, just published in ApJ! ☄️
Reposted by Tanja Amerstorfer ☀️
We have updated spacecraft mission trajectory movies for @esa.int Solar Orbiter, BepiColombo and NASA Parker Solar Probe, for the whole decade 2020 to 2030. There are extra movies for 2025-2030 for the just launched #PUNCH mission, for context where the other spacecraft are.
doi.org/10.6084/m9.f...
doi.org/10.6084/m9.f...
March 27, 2025 at 1:45 PM
We have updated spacecraft mission trajectory movies for @esa.int Solar Orbiter, BepiColombo and NASA Parker Solar Probe, for the whole decade 2020 to 2030. There are extra movies for 2025-2030 for the just launched #PUNCH mission, for context where the other spacecraft are.
doi.org/10.6084/m9.f...
doi.org/10.6084/m9.f...