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polarobs.bsky.social
Polar Observer
@polarobs.bsky.social
690 followers 330 following 1.2K posts
Promouvoir la connaissance des régions #australes et #polaires | Promoting knowledge of #austral and #polar regions #Arctic #Antarctica #TAAF

Compte maintenu par @thalassarche46.bsky.social
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polarobs.bsky.social
China's 42nd Antarctic expedition team is preparing to, for the first time, drill into Qilin Subglacial Lake buried over 3,600 meters deep beneath the ice cap in #Antarctica.

www.bastillepost.com/global/artic...
China to drill into subglacial lake in Antarctica
China's 42nd Antarctic expedition team is preparing to, for the first time, drill into a subglacial
www.bastillepost.com
November 10, 2025 at 8:21 PM
Reposted by Polar Observer
arcticsciencej.bsky.social
Explore 30 years of Earth system change in Svalbard with Arctic Science Journal! Discover insights on permafrost, glaciers, marine biology, and more.

Browse the collection ▶️ https://ow.ly/bx3A50XoH0W

#ArcticScience
Night view of a snowy Arctic research station under a clear blue sky in Svalbard, highlighting 30 years of Earth System Science studies.
November 10, 2025 at 2:10 PM
Reposted by Polar Observer
iceybethan.bsky.social
It was a delight to contribute a couple of chapters to this important UK National Commission to UNESCO book on glaciers and ice sheets in a warming world:
unesco.org.uk/resources/gl...
Glaciers and Ice Sheets in a Warming World: Impacts and Outcomes | UNESCO in the UK
Glaciers and Ice Sheets in a Warming World: Impacts and Outcomes reveals how British-led research is helping the world understand, and respond to, one of the most visible frontlines of climate change.
unesco.org.uk
November 10, 2025 at 3:49 PM
polarobs.bsky.social
Le dock Titan sera capable d'accueillir l'ensemble de la flotte de l'île de #LaRéunion, y compris les navires de la Marine nationale (il sera désormais possible de lever les 4 000 tonnes de L' #Astrolabe) et de pêche opérant dans les #TAAF.

la1ere.franceinfo.fr/reunion/le-d...
Le dock flottant "Titan" enfin opérationnel au Grand Port Maritime de La Réunion
Le Grand Port Maritime de La Réunion accueille un nouvel outil pour renforcer l’offre de réparation navale. Annoncé en 2017, le dock flottant "Titan" entre en service ce dimanche 9 novembre.
la1ere.franceinfo.fr
November 9, 2025 at 5:05 PM
Reposted by Polar Observer
earthdotcom.bsky.social
Fastest glacier collapse in history was recently recorded in Antarctica #EarthDotCom #EarthSnap #Earth
Fastest glacier collapse in history was recently recorded in Antarctica
Scientists uncover how a flat seabed triggered Hektoria Glacier’s record collapse, offering new warnings for Antarctica’s ice and rising seas.
www.earth.com
November 8, 2025 at 9:36 AM
polarobs.bsky.social
Ice at the sea surface blocks cosmic dust from reaching the seafloor, while open water allows cosmic dust to settle into sediment. By analyzing the amount of cosmic dust in sediment cores from three sites, researchers reconstructed the history of sea ice for the past 30,000 years via @uwnews.uw.edu.
Space dust reveals Arctic ice conditions before satellite imaging
A new University of Washington-led study shows that space dust sandwiched between layers of sediment tells scientists where and when ice covered the Arctic, and what happened to marine life when it...
www.washington.edu
November 6, 2025 at 9:41 PM
polarobs.bsky.social
A new study led by researchers from the @umanitoba.bsky.social Centre for Earth Observation Science provides the most detailed account yet of how the Thwaites Eastern Ice Shelf in West #Antarctica has progressively disintegrated over the past two decades.

news.umanitoba.ca/cracking-the...
Cracking the code of Thwaites ice shelf’s disintegration
Thwaites Glacier in West Antarctica — often called the “Doomsday Glacier” — is one of the fastest-changing ice–ocean systems on Earth, and its future remains a major uncertainty in global se
news.umanitoba.ca
November 6, 2025 at 9:34 PM
Reposted by Polar Observer
pmarques35.bsky.social
[1/8] Frédéric Lasserre, Mathieu Landriault, Pauline Pic et Stéphane Roussel (Université Laval, ESEI et ENAP) analysent les prétendues menaces sur la souveraineté du Canada dans l’Arctique. Leur étude démonte les discours alarmistes sur la Russie et la Chine, jugés sans fondement réel. #geography
La sécurité et la souveraineté du Canada dans l’Arctique sont-elles vraiment menacées ?
Quatre chercheurs de l’École supérieure d’études internationales (ESEI) de l’Université Laval émettent des doutes sur les menaces qui planeraient sur la souveraineté de l’Arctique canadien à cause de ...
www.lapresse.ca
November 6, 2025 at 8:19 AM
Reposted by Polar Observer
earthdotcom.bsky.social
Warming oceans are pushing Antarctic ice shelves to the brink of collapse #EarthDotCom #EarthSnap #Earth
Warming oceans are pushing Antarctic ice shelves to the brink of collapse
Ocean heat, not air temperature, may decide Antarctica’s fate as new models predict widespread ice shelf loss by 2300.
www.earth.com
November 5, 2025 at 1:19 PM
polarobs.bsky.social
Le dessinateur costarmoricain #EmmanuelLepage revient avec un nouvel album intitulé "Danser avec le Vent" #Kerguelen #TAAF qui paraît ce 5 novembre aux éditions @futuropolis.bsky.social. Il y raconte le quotidien des scientifiques, notamment ceux qui suivent les populations d'éléphants de mer.
BD. L'expédition polaire d'Emmanuel Lepage : "les gens qui partent là-bas ne reviennent plus comme avant"
Le dessinateur costarmoricain Emmanuel Lepage revient des Îles Kerguelen avec un nouvel album intitulé "Danser avec le Vent". Il y raconte le quotidien des scientifiques, notamment ceux qui suivent le...
france3-regions.franceinfo.fr
November 5, 2025 at 10:08 PM
polarobs.bsky.social
OPINION: Negativity won’t help #Antarctica By Professor Steven L Chown @arcsaef.bsky.social

www.australiangeographic.com.au/topics/opini...
OPINION: Negativity won’t help Antarctica - Australian Geographic
Antarctica, and the treaty that protects it, have been in the news of late – but for all the wrong reasons, argues Professor Steven L Chown.
www.australiangeographic.com.au
November 5, 2025 at 11:58 AM
polarobs.bsky.social
#Antarctic conservation summit #CCAMLR closes with stalemate on MPAs & krill fishing rules via @mongabay.com

news.mongabay.com/2025/11/anta...
Antarctic conservation summit closes with stalemate on MPAs & krill fishing rules
The annual meeting of the international body responsible for conservation of the marine ecosystems in the Southern Ocean concluded on Friday with no progress on two contentious issues before it: the c...
news.mongabay.com
November 5, 2025 at 7:08 AM
Reposted by Polar Observer
alaskawx.bsky.social
Incredible Arctic heat in October. Highest average temperature on record for land and seas north of 60ºN. In Canada, Yukon Territory and Nunavut second warmest, Northwest Territories third warmest. Alaska and Svalbard fourth warmest. Data courtesy ERA5. #akwx #Arctic #Canada #Climate
Map centered on the North Pole showing the October 2025 average temperature as the difference from the 1991-2020 baseline.
November 5, 2025 at 4:28 AM
polarobs.bsky.social
Probing the radio sky from #Antarctica - The benefits of placing your radio telescope in Antarctica, illustrated by a Chinese experiment near the Kunlun station (Dome A) via @astrobites.bsky.social

astrobites.org/2025/11/04/r...
Probing the radio sky from Antarctica
In the latest of our #UndergradResearch series, discover how authorname ...
astrobites.org
November 4, 2025 at 9:58 PM
Reposted by Polar Observer
eos.org
A new analysis of #CryoSat-2 data revealed that subglacial lake levels in Antarctica are changing not by centimeters but by *meters*.

New research from Sally Wilson @universityofleeds.bsky.social, comments from @leighstearns.bsky.social @upenn.edu. eos.org/articles/sat...
Satellite Data Reveal Changing Lakes Under Antarctic Ice - Eos
Radar altimetry observations have pinpointed 85 active subglacial lakes, shedding light on how water moves beneath the Antarctic Ice Sheet.
eos.org
November 4, 2025 at 3:51 PM
Reposted by Polar Observer
copernicusecmwf.bsky.social
How does the #cryosphere shape our climate, and how do we track its changes? Dr. Erik Loebel from #C3S shares a first-hand account on monitoring glaciers, ice sheets, sea ice and permafrost, and why it matters. 

Read more: climate.copernicus.eu/c3s-behind-s...
November 4, 2025 at 4:28 PM
Reposted by Polar Observer
cires.colorado.edu
Here's a visual of how Hektoria Glacier started to disintegrate in 2022. #CIRES #Antarctica
November 4, 2025 at 12:44 AM
polarobs.bsky.social
L'étendue minimale de la banquise #arctique cette année a été atteinte avec une superficie supérieure à celle prévue au printemps. Cela a été favorisé par des variations naturelles de la dynamique de la banquise.

www.meteosuisse.admin.ch/portrait/met...
La dynamique de la banquise de l'Arctique - MétéoSuisse
www.meteosuisse.admin.ch
November 4, 2025 at 4:23 PM
polarobs.bsky.social
Hektoria Glacier in #Antarctica shrinks at fastest rate recorded in modern history by @southernsky.bsky.social

www.abc.net.au/news/2025-11...
Antarctic glacier shrinks at fastest pace in modern history
Antarctic scientists have documented the fastest retreat of a glacier in modern history, after it lost eight kilometres of ice in just two months, according to a new report.
www.abc.net.au
November 4, 2025 at 1:20 PM
polarobs.bsky.social
China has completed 43 successful manned submersible dives during its 2025 #Arctic expedition, including coordinated missions using two crewed deep-sea vehicles, by @maltehumpert.bsky.social

gcaptain.com/china-comple...
China Completes 43 Manned Arctic Dives in 2025, Demonstrates Dual Submersible Operations Under Ice
China has completed 43 successful manned submersible dives during its 2025 Arctic expedition, including coordinated missions using two crewed deep-sea vehicles, the country’s Ministry of Natural Resou...
gcaptain.com
November 4, 2025 at 10:16 AM
polarobs.bsky.social
Icebreakers Xue Long and Xue Long 2 depart on China's 42nd #Antarctic expedition

www.bairdmaritime.com/work-boat-wo...
Icebreakers depart on China's 42nd Antarctic expedition
The Chinese polar research icebreakers Xue Long and Xue Long 2 departed Beijing for Antarctica late last week as part of an expedition organised by the Chinese
www.bairdmaritime.com
November 4, 2025 at 10:07 AM
Reposted by Polar Observer
subfossilguy.bsky.social
8 km of retreat in just 2 months...! 😱

The fastest glacier retreat ever recorded in modern history, at Hektoria Glacier (Antarctic peninsula) 📈🔥

www.nature.com/articles/s41...
Via Etienne Berthier
November 4, 2025 at 8:54 AM
Reposted by Polar Observer
nicojourdain.bsky.social
A few comments on our recent paper:
1- The high end is based on the SSP585 scenario which was the only one available until 2300 in CMIP6, but according to the reduced-complexity models used in IPCC-AR6, the SSP370 scenario should also cross the limit beyond which most ice shelves become non-viable.
November 4, 2025 at 6:38 AM
Reposted by Polar Observer
exploration.esa.int
What's it like to live on White Mars? 🇦🇶
After a year of research and resilience at Concordia station, @esa.int doctor Nina Purvis shares her experience in a new blog 🧪❄️.
Discover her journey 🔗
blogs.esa.int/concordia/20...
November 4, 2025 at 9:08 AM
polarobs.bsky.social
A @discoverunb.bsky.social researcher investigating how declining sea ice affects the entire ecosystem has recently returned from her first scientific expedition to the Queen Elizabeth Islands in the Canadian #Arctic Archipelago, aboard the CCGS Amundsen @unbresearch.bsky.social
UNB researcher exploring at-risk sea ice returns from Arctic expedition | CBC News
A University of New Brunswick researcher has returned from the Amundsen icebreaker’s first scientific expedition to the Queen Elizabeth Islands, the northernmost group of islands in the Canadian Arcti...
www.cbc.ca
November 3, 2025 at 12:30 PM