Polar Observer

How the Southern Ocean helped end the last Ice Age Scientists trace ancient deep-sea changes in the Southern Ocean to explain how rising CO₂ helped warm Earth after the last Ice Age.

How the Southern Ocean helped end the last Ice Age #EarthDotCom #EarthSnap #Earth

Atmospheric instrument hitches ride on Antarctic planes This November through February, a specialized laser instrument that measures atmospheric gases is hitching a ride on regularly scheduled flights to and from McMurdo Station in Antarctica. The instrume...

Atmospheric instrument hitches ride on #Antarctic planes: NSF NCAR researchers leverage #McMurdo flights to study carbon in the Southern Ocean via @eurekalert.bsky.social

www.eurekalert.org/news-release...

150 years of #Arctic operations and the Polar Security Cutter @uscg-official.bsky.social

www.mycg.uscg.mil/News/Article...

APPEL À PROPOSITIONS POUR LE PROGRAMME PHILATÉLIQUE DES TAAF 2027 - Terres australes et antarctiques françaises

Les Terres australes et antarctiques françaises #TAAF lancent un appel à propositions pour définir les thèmes du programme philatélique 2027. Le public est invité à contribuer.

taaf.fr/actualite/ap...

Adrift like Shackleton: Robot float survives Antarctic ice The Argo float disappeared under the ice and survived to send back the first-ever ocean transect beneath an East Antarctic ice shelf.

Adrift like Shackleton: Robot float survives #Antarctic ice. The Argo float disappeared under the ice and survived to send back the first-ever ocean transect beneath an East Antarctic ice shelf.

www.csiro.au/en/news/All/...

New York Air National Guard’s 109th Airlift Wing Annual Antarctic Support Mission Under Way The New York Air National Guard’s 109th Airlift Wing kicked off its 38th year of supporting American science research in Antarctica as four LC-130H “Skibirds” and 45 Airmen departed Stratton Air Natio...

This season, LC-130H aircraft will be flying a specialized laser instrument that measures atmospheric gases on regularly scheduled flights to and from #McMurdo Station #SCARGO. The 109th will also support the IceCube Neutrino Observatory upgrade.

www.dvidshub.net/news/553172/...

Trump signs law that revokes some limits on drilling in Alaska’s National Petroleum Reserve | Alaska Beacon The reserve, located to the west of Prudhoe Bay, has been the site of interest by oil and gas producers working in Alaska.

Trump signs law that revokes some limits on drilling in Alaska’s National Petroleum Reserve, reports James Brooks for the @alaskabeacon.com

Antarctica’s future beyond 2100: high emissions would drive major long-term ice loss 05.12.2025 - The future of the Antarctic ice sheet, Earth’s largest store of freshwater ice, will play a decisive role in long-term sea level rise, finds a new study led jointly by the Potsdam Institu...

Antarctica’s future beyond 2100: high emissions would drive major long-term ice loss, finds new PIK study. The West Antarctic Ice Sheet’s long-term collapse becomes virtually certain under high emissions; strong mitigation would limit sea-level rise contribution.
www.pik-potsdam.de/en/news/late...

La Difesa torna in Antartide con la 41ª Spedizione italiana La Difesa a sostegno della ricerca nazionale.

Rinnovata la collaborazione tra Difesa e Agenzia nazionale #ENEA per supportare le missioni scientifiche #Antartide #PNRA

www.difesa.it/primopiano/l...

Argentina launches the 2025/2026 Antarctic Summer Campaign with new scientific and conservation missions - Noticias Ambientales On November 28, the official start of the 2025/2026 Summer Antarctic Campaign took place, an operation that reaffirms Argentina's commitment to scientific

Argentina launches the 2025/2026 #Antarctic Summer Campaign with new scientific and conservation missions.

noticiasambientales.com/science/arge...

Révision à mi-parcours de la stratégie polaire française : "Équilibrer les extrêmes à l’horizon 2040".

www.diplomatie.gouv.fr/fr/dossiers-...

Un medico cagliaritano in partenza per l'Antartide: "Condizioni estreme, pronti a ogni emergenza" Stefano Mancosu parteciperà per conto dell'Enea alla missione italiana nella base Zucchelli. Nella stazione vivono e lavorano un centinaio di persone

Stefano Mancosu parteciperà per conto dell'Enea alla missione italiana nella base Mario Zucchelli #Antartide. Nella stazione vivono e lavorano un centinaio di persone.

www.rainews.it/tgr/sardegna...

The Polar Express. No, Not That One. - The Yale Review Of International Studies For just one time I would take the Northwest Passage

"As the climate warms and more #Arctic sea ice melts, more human activity accelerating climate change is expected to take place in the Arctic in a positive feedback loop akin to a vicious, environmental death spiral."

yris.yira.org/column/the-p...

Polar power play: China, Russia and the race for the Arctic (Part II) The People’s Republic of China’s Arctic strategy emphasizes that the Arctic’s natural conditions and the changes taking place there have a direct impact on the national climate system and the environm...

Polar power play: China, Russia and the race for the #Arctic (Part II) via @defence24pl.bsky.social

defence24.com/geopolitics/...

Polar Power Play: China, Russia and the Race for the Arctic. Part I Russia and China are often perceived more as allies than rivals, which is especially visible in the context of the war in Ukraine. This cooperation is based on chosen partnership and a strong politico...

Polar power play: China, Russia and the race for the #Arctic (Part I) via @defence24pl.bsky.social

defence24.com/geopolitics/...

Ce soir, sur France 5, mon dernier documentaire "Groenland, annexe-moi si tu peux". Quand Donald Trump veut acheter la plus grande île du monde. Le film sera suivi d'un débat avec Jean-Louis Etienne, Emmanuel Hache, Lucas Menget et moi-même. Soirée présentée par Aurélie Casse. @francetv.bsky.social

And now we know that the volume of #Arctic sea ice also dropped to a record low in October (zacklabe.com/archive-2025/).

It's been a historic fall in the #Arctic, which is already a season of rapid climate change. Not good.

Antarctique – Déploiement du Patrouilleur polaire l’Astrolabe Le patrouilleur polaire l’Astrolabe a débuté une nouvelle mission de soutien à la logistique Antarctique (MSLA). Après une escale à Perth, puis à Hobart afin d’être ravitaillé et d’embarquer les 41 pa...

Le patrouilleur polaire L' #Astrolabe a commencé une nouvelle mission de soutien à la logistique #Antarctique (MSLA). Après une escale à Perth, puis à Hobart, le bâtiment a appareillé le 11 novembre en direction de la base Dumont d'Urville #TerreAdélie #TAAF #IPEV.

Buon vento N/R Laura Bassi
🚢La nave rompighiaccio ha lasciato nei giorni scorsi la Nuova Zelanda, facendo rotta verso l’Antartide, per le attività della 41a spedizione
📸PNRA
📌https://www.ogs.it/it/notizie/antartide-la-rompighiaccio-laura-bassi-inizia-missione-scientifica

A-Hut, the original building of New Zealand’s Scott Base in Antarctica, built by Edmund Hilary in 1957. Picture taken from the bar in the modern Scott Base which is soon to be torn down because of its age and rebuilt (Hilary’s Hit will remain untouched of course). #scicomm

Storms in the Southern Ocean are producing more rain – and the consequences could be global The Southern Ocean is the engine room of global heat and carbon uptake – and it’s changing faster and more dramatically than we thought.

[1/8] Steven Siems et Zhaoyang Kong (Monash University, Melbourne) montrent que les tempêtes du sud de l’océan Austral produisent plus de pluie. En s’appuyant sur 45 ans de données issues de Macquarie Island, ils révèlent un signal régional mal capté par les modèles et aux effets globaux. #geography

🌊 1/ A robotic float has measured temperature and salinity from parts of the Southern Ocean never sampled before — underneath massive floating Denman and Shackleton ice shelves in East #Antarctica.

New in @science.org #ScienceAdvances: www.science.org/doi/10.1126/...

Ice Memory, un sanctuaire pour sauver la mémoire des glaces avant qu’elle ne s’efface Le célèbre paléoclimatologue Jérôme Chappellaz livre ce vendredi à Sion une conférence pour défendre Ice Memory, un projet qui vise à préserver des pans de glaciers et les données qu’ils renferment.

Entretien avec le glaciologue et paléoclimatologue Jérôme Chappellaz à propos du projet #IceMemory

www.24heures.ch/ice-memory-p...

La France revoit sa copie en Arctique, futur point chaud des rivalités mondiales Une nouvelle feuille de route a été dévoilée mercredi pour faire évoluer la stratégie polaire de Paris, devenue obsolète depuis l'invasion russe de l'Ukraine. Objectif : faire de la France "une grande...

Une nouvelle feuille de route a été dévoilée mercredi pour faire évoluer la stratégie polaire française, devenue obsolète depuis l'invasion russe de l'Ukraine. Objectif : faire de la France "une grande puissance polaire au service de la paix", malgré un contexte budgétaire incertain.

On the 25th of November, for the first time, an oceanographic mooring was deployed through a hole cut in the pack ice. Deploying a mooring is a routine procedure from an oceanographic vessel, but it has never been done before from Antarctic pack ice.

La France révise sa stratégie polaire dans un contexte de tensions géopolitiques en Arctique Portant sur 2026-2040, le document cherche à soutenir la recherche aux pôles et, surtout, à accroître les enjeux de défense, mais sans aucune garantie de financement.

[1/8] Audrey Garric et Léa Sanchez analysent la nouvelle stratégie polaire française. Les autrices montrent comment #Arctique et #Antarctique, accélérateurs du réchauffement, deviennent aussi des espaces de rivalités géopolitiques autour des routes, minerais et ressources halieutiques. #geography

Pourquoi la France doit (vite) faire évoluer sa stratégie polaire ? Un rapport souhaite une France plus forte et plus ambitieuse dans les cercles polaires, des espaces très convoités entre les grandes puissances

Russie, ressources naturelles… Pourquoi la France doit (vite) faire évoluer sa stratégie polaire ? #Arctique #Antarctique

www.20minutes.fr/monde/418955...

Announcing “Antarctica as a Model for Global Peace”.
Chapter by Bruno Arpi & I: “The resilience of the Antarctic Treaty System in the face of a changing global order“.

Great working with Agenda Antártica and Konrad Adenauer Stiftung on this chapter.

www.kas.de/documents/d/...

Taiwan’s Arctic Imperative: Navigating a New Global Frontier Written by Aileen A. Espiritu, Marc Lanteigne, and Tse-Kang Leng. This article argues that Taiwan should construct a clear, multifaceted Arctic policy to safeguard its future prosperity and strengt…

We're reading @marclanteigne.bsky.social's latest piece on Taiwan's Arctic imperative as our Tuesday morning read!

Temperatures in a patch of Antarctic moss can vary as much as an entire mountain range The moss beds in Antarctica are like miniature forests – they create their own climate.

[1/8] Krystal Randall (Université de Wollongong) étudie les mousses antarctiques. Son équipe montre qu’un simple mètre carré de ces "forêts miniatures" produit autant de variation thermique qu’un massif montagneux, révélant la géographie fine des milieux extrêmes. #geography #ecology #Antarctic