Lars Kaleschke
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seaice.de
Lars Kaleschke
@seaice.de
2.7K followers 940 following 270 posts
Physicist. Climate, sea ice, earth observation @awi.de

https://orcid.org/0000-0001-7086-3299
https://det.social/@seaice
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seaice.de
Lars Kaleschke @seaice.de · Nov 19
The #Arctic Ocean is full of life, not only polar bears live on the sea ice.
🐦🐟🐦🦐🐦🐋🐦
Enjoy this short movie made in the marginal ice zone. 2nd June 2020 ⁦@MOSAiCArctic
seaice.de
Geomagnetic Storm Watches in Effect, to include G4 (Severe) potential for 12 November.

www.swpc.noaa.gov/news/g4-seve...
G4 (Severe) Watch in Effect for 12 November | NOAA / NWS Space Weather Prediction Center
www.swpc.noaa.gov
November 11, 2025 at 7:08 PM
Reposted by Lars Kaleschke
ursmansmann.bsky.social
Der schwere Magnetsturm auf dem Weg von der Sonne zur Erde könnte Stufe 4 von 5 erreichen, schätzen die Experten und ziemlich schnell hier eintreffen. Die Auswertung der Satellitendaten läuft noch, möglicherweise dauert das auch wegen des Shutdowns in USA länger als üblich.
Another, Faster Moving CME Blasts from the Sun Early on 11 November | NOAA / NWS Space Weather Prediction Center
www.swpc.noaa.gov
November 11, 2025 at 4:07 PM
Reposted by Lars Kaleschke
ursmansmann.bsky.social
Die große Schockwelle ist schneller als die vorherigen kleineren. Sie wird sie also einholen und sich mit ihnen vereinigen, was die Wucht erhöht. Zwar wird das Zentrum des Ausbruchs an der Erde vorbeifliegen, wir werden nur Ausläufer abbekommen, aber die können für Nordlichter in D reichen.
November 11, 2025 at 4:11 PM
Reposted by Lars Kaleschke
greatwhitecon.info
Here's a map of #Arctic sea ice thickness at the end of October:

greatwhitecon.info/2025/11/fact...

It's based on data from the CryoSat-2, Sentinel 3 and SMOS satellites.
A map of Arctic sea ice thickness on October 31st 2025. It's based on merged CryoSat-2, Sentinel 3 and SMOS data from the Alfred Wegener Institute.
November 7, 2025 at 3:00 PM
Reposted by Lars Kaleschke
polarbremen.bsky.social
Intensive and very productive workshop at @esa.int ESRIN in #Frascati 🇮🇹 to write the science plan 📝 for the large, international #AntarcticaInSync initiative! 🤝

More information about Antarctica InSync: www.antarctica-insync.org
November 7, 2025 at 9:18 AM
seaice.de
Just love watching the Arctic sea ice grow!
November 7, 2025 at 7:22 AM
Reposted by Lars Kaleschke
capitalweather.bsky.social
🌌 A strong geomagnetic storm is forecast tonight! 🌝 Currently expected to peak 8–11 PM ET & again before sunrise Fri. Aurora may reach our region, especially on long-exposure shots! 📸

All the details: www.washingtonpost.com/weather/2025...
Auroral oval forecast. The southern red line is where it is expected to be able to be seen with a naked eye, although photographs will often catch it further south and sometimes these storms end up delivering south of expected.
November 6, 2025 at 5:41 PM
Reposted by Lars Kaleschke
helmholtz.de
A total of six of the prestigious and highly endowed #ERC Synergy Grants have been awarded to research teams at the Helmholtz Association.

Congratulations to all successful applicants! www.helmholtz.de/en/newsroom/...
ERC Synergy Grants (Kopie 1)
ERC Synergy Grants (Kopie 1)
www.helmholtz.de
November 6, 2025 at 1:41 PM
Reposted by Lars Kaleschke
rav-ev.bsky.social
Wie tief will diese Regierung noch sinken? Erst wird die Aufnahme von massiv Schutzbedürftigen trotz Aufnahmezusage jahrelang verzögert - nun will man sich von der Verpflichtung freikaufen und setzt den Menschen mit einer Zweiwochenfrist die Pistole auf die Brust.
www.tagesschau.de/investigativ...
Aufnahmezusage: Bundesregierung bietet Afghanen Geld für freiwilligen Verzicht
Die Bundesregierung versucht nach Informationen des ARD-Hauptstadtstudios mit Geldzahlungen Afghaninnen und Afghanen in Pakistan dazu zu bewegen, auf ihre Aufnahmezusagen zu verzichten. Der Druck auf ...
www.tagesschau.de
November 4, 2025 at 9:20 PM
seaice.de
The Finnish Meteorological Institute (FMI) is accepting applications for a three-year postdoctoral researcher position focusing on the synergy of snow models, observations, and remote sensing over Arctic sea ice and lake ice.

valtiolle.fi/en/jobs/post...
Postdoctoral Researcher (synergy of snow models, observations, and remote sensing) - The Finnish Meteorological Institute
Open job: Postdoctoral Researcher (synergy of snow models, observations, and remote sensing), The Finnish Meteorological Institute - Find all jobs in Valtiolle.fi
valtiolle.fi
November 5, 2025 at 6:45 PM
Reposted by Lars Kaleschke
scar-antarctic.bsky.social
The first SCAR-Connect Online Training Series on the Antarctic Treaty System and the Antarctic Environments Portal will begin in just over an hour.
📝 5th November, 11:30am UTC.

Don't forget to register: eu.jotform.com/form/2529946...
November 5, 2025 at 10:20 AM
Reposted by Lars Kaleschke
eumetsat.int
Hello Sentinel-1D! 👋

Yesterday the satellite launched into orbit, and Meteosat-12's FCI instrument was ready to capture the moment from space.

Below: views in the 0.6µm channel (L) and (R) Rocket Plume RGB, revealing the rocket’s exhaust plume in the both visible and infrared range. 🚀
November 5, 2025 at 10:45 AM
seaice.de
"We find that retreat commenced immediately after the loss of decade-old fast ice in the Larsen B embayment"
www.nature.com/articles/s41...

The animation shows the changing sea ice condition at the former Larsen B ice shelf in 2022 compared to 2017.
#Antarctic #SeaIce #Glacier #Climate
November 5, 2025 at 9:55 AM
Reposted by Lars Kaleschke
signeaaboe.bsky.social
Refreezing is occurring in the Arctic. Worth keeping an eye on where the 2025 ice growth goes in the coming days. 🧐 (at present, third-lowest for this day of year.)
Line graph showing the daily sea-ice extent in the Arctic from 1978 to November 2025. The thick black line represents 2025, while the previous years are displayed in decadal-grouped colors. Ice is seen to grow since mid-September; however, the growth slows down in the last days.
November 5, 2025 at 8:43 AM
Reposted by Lars Kaleschke
zohrankmamdani.bsky.social
November 5, 2025 at 2:41 AM
seaice.de
"The loss of sea ice in the ocean next to Hektoria, believed to have been driven by ocean warmth, allowed wave swells to reach the fast ice and break it up, leaving the glacier exposed to ocean forces."
November 4, 2025 at 9:19 PM
Reposted by Lars Kaleschke
operations.esa.int
The Copernicus Sentinel-1D ‘Network Countdown’ has begun. Launch, communication and control facilities around the world have begun a synchronised sequence of activities to prepare for liftoff at 22:02 CET tonight and the crucial hours that follow. 🚀Watch live at esawebtv.esa.int
📷ESA - J. Mai
ESA’s ESOC facility with multiple large screens displaying data and status information. Several workstations with computers and keyboards are arranged in rows, and personnel in white shirts with ESA logos are monitoring spacecraft operations. The environment is filled with technical equipment, cables, and mission-related materials.
November 4, 2025 at 3:02 PM
seaice.de
www.butenunbinnen.de/videos/buten...
buten un binnen vom 31. Oktober - Weltraum-Extra: Die ESA kommt nach Bremen! - buten un binnen
Wenn Ende November 2025 mit das "Who is Who" der europäischen Raumfahrtbranche in Bremen zusammenkommt, soll es um die Zukunft Europas im All gehen.
www.butenunbinnen.de
November 2, 2025 at 9:23 PM
Reposted by Lars Kaleschke
thebarentsobserver.com
OPINION: For Vladimir Putin and his ex-KGB cohort, threatening with the new reactor-powered, nuclear-capable weapons systems brings Soviet nostalgia back onto the table. A look into history can help elucidating today's escalating Russian nuclear brinksmanship.
The Arctic has again become Moscow’s nuclear bluster playground
History is repeating itself.
www.thebarentsobserver.com
November 2, 2025 at 3:27 PM
Reposted by Lars Kaleschke
realkachelmann.bsky.social
Jeden Tag.
November 1, 2025 at 7:06 PM
Reposted by Lars Kaleschke
space.com
#nasa is shuttering the Goddard #space #flight center in a move that may not be entirely legal, according to critics. For months, our #staff #writer @joshdinner.bsky.social interviewed NASA #employees, read #senate reports and more to give you the deepest dive yet.

www.space.com/space-explor...
October 31, 2025 at 12:37 PM
Reposted by Lars Kaleschke
livescience.com
New simulations show that a solar storm on par with the infamous Carrington Event could potentially wipe out every single satellite orbiting our planet

https://www.livescience.com/space/the-sun/the-next-carrington-level-solar-superstorm-could-wipe-out-all-our-satellites-new-simulations-reveal
October 30, 2025 at 8:00 PM
Reposted by Lars Kaleschke
cira-csu.bsky.social
A look at the devastating power loss across Jamaica following the historic crossing of Hurricane Melissa, captured by NOAA-21.
October 30, 2025 at 6:27 PM
seaice.de
#Arctic System Science Conference
23-27 March 2026, #Potsdam, Germany

polarsystemscience.org/arcticsystem...
Arctic System Science Conference
Arctic System Science Conference 2026 - General Information, Program, Abstracts, Registration, Facility.
polarsystemscience.org
October 30, 2025 at 11:58 AM
Reposted by Lars Kaleschke
h-a-kjaer.bsky.social
Really no lack of exciting postdocs these days. This one at AWI in #icesheet modelling within our project P2F jobs.awi.de/Vacancies/20...
PostDoc in paleoclimate ice-sheet and climate modeling (d/f/m)
Layout AWI Forschung englisch extern
jobs.awi.de
October 30, 2025 at 8:05 AM