La surface maximale annuelle de la banquise de l'Antarctique n'a jamais été aussi petite
La banquise de l'Antarctique fond en été, et se reconstitue en hiver. Ce dernier s'achève actuellement dans l'hémisphère Sud. Le 10 septembre, "la banquise de l'Antarctique a atteint une étendue maximale annuelle de 16,96 millions de km2", a écrit le National Snow and Ice Data Center (NSIDC).
Artico & Antart. sciogl. del ghiaccio** EMPFOHLEN ** Antarktis: "Einen Einbruch im Winter wie dieses Jahr haben wir noch nie gesehen"
Nie wurde weniger Meereis am Südpol gemessen. Forscher wissen nicht genau, warum. Physikerin Stefanie Arndt spricht über die ungewisse Zukunft der Antarktis und der Erde.
Artico & Antart. sciogl. del ghiaccio* HEAT * ‘Something weird is going on’: search for answers as Antarctic sea ice stays at historic lows
Most mornings since the end of March and before Will Hobbs has done much at all other than make a coffee, he scrolls his inbox looking for one particular email.
Artico & Antart. sciogl. del ghiaccio livello del mareLa banquise peine à se reconstituer après une fonte record cet hiver
Quelque 2,5 millions de km2, tel est le déficit de banquise enregistré par l'observatoire européen Copernicus à la fin du mois de juin, par rapport à la moyenne 1991-2020.
Artico & Antart. cicli di feedback sciogl. del ghiaccio ozeaniTemperaturanstieg am Nordpol – Eisfreie Arktis im September – schon ab 2030 möglich
Dieser Anblick wird irritieren: überall Wasser, so weit man blickt. Nichts zu sehen vom Meereis, das den Arktischen Ozean seit über 40 Millionen Jahren prägt. Schon im nächsten Jahrzehnt könnte sich jenes Bild präsentieren.
Artico & Antart. calore sciogl. del ghiaccioThe Guardian view on the Arctic: threatened by Putin’s war
As the cold war thawed in the 1980s, the frozen high north of the planet was a leading beneficiary of more conciliatory times. Speaking in Murmansk in 1987, Mikhail Gorbachev called for an end to military competition in the Arctic, and a new focus on preserving its unique ecosystem.
Artico & Antart. conflittiArctic Summer Could Be Practically Sea-Ice-Free by the 2030s
The first summer on record that melts practically all of the Arctic’s floating sea ice could occur as early as the 2030s, according to a new scientific study — about a decade sooner than researchers previously predicted.
Artico & Antart. sciogl. del ghiaccioKlimawandel: Antarktische Umwälzpumpe schwächelt bereits bedenklich
Jede Sekunde stürzen gigantische Mengen Wasser in die Tiefe des Antarktischen Ozeans: Die Antarktische Umwälzzirkulation, bei der kaltes, sauerstoffreiches Wasser vom Schelf des Kontinents in die Tiefsee schießt, gilt als einer der großen Motoren der globalen Meeresströmungen.
Artico & Antart. corrente marinaCan Iceberg Surges in the Arctic Trigger Rapid Warming at the Other End of The World?
With the planet warming by a fraction of a degree every few years, glaciers melting away in a trickle and sea level rising two inches per decade, global warming sometimes seems to be happening at a slow and steady pace.
Artico & Antart. sciogl. del ghiaccio corrente marina ozeaniKampf gegen Klimawandel - Grönland steht beim Klimaschutz nicht mehr abseits
Auch Grönland tritt jetzt dem Pariser Abkommen bei. Die grösste Insel der Welt hofft auf internationale Klimaschutz-Gelder. Neue Ölfelder werden keine mehr erschlossen. Darum geht es: Grönland hat das Pariser Abkommen zum Klimaschutz von 2015 bislang nicht unterschrieben.
Artico & Antart. OnuGlobal Warming Could Drive Pulses of Ice Sheet Retreat Reaching 2,000 Feet Per Day
The international research team documented that rate of retreat by mapping and measuring what they called “corrugation ridges” spread across about 11,000 square miles of the seabed. The ridges are generally less than 8 feet high and are spaced between about 80 and 1,000 feet apart.
Artico & Antart. sciogl. del ghiaccio** RECOMMENDED READING ** Torrents of Antarctic meltwater are slowing the currents that drive our vital ocean ‘overturning’ – and threaten its collapse
Off the coast of Antarctica, trillions of tonnes of cold salty water sink to great depths. As the water sinks, it drives the deepest flows of the “overturning” circulation – a network of strong currents spanning the world’s oceans.
Artico & Antart. apocalisse sciogl. del ghiaccioArctic ice is getting thinner by the day—and sea life is suffering
In April 1895, when famed Norwegian explorer Fridjtof Nansen attempted to mush across the frozen Arctic Ocean to reach the North Pole, he was stopped by endless rows of sea ice ridges.
Artico & Antart. biodiversità sciogl. del ghiaccio ozeaniArctic sea-ice shrinks to near record low extent
This summer's Arctic sea-ice shrank to its second lowest ever extent in the era of satellite observation. The floes withdrew to just under 3.74 million sq km (1.44 million sq miles) last week, preliminary data indicates.
Artico & Antart. sciogl. del ghiaccioScientists Get a Close-Up Look Beneath a Troubling Ice Shelf in Antarctica
Deploying an underwater robot beneath a rapidly melting ice shelf in Antarctica, scientists have uncovered new clues about how it is melting. The findings will help assess the threat it and other ice shelves pose for long-term sea-level rise.
Artico & Antart. sciogl. del ghiaccioDas Ende des antarktischen Meereises beginnt
Viel hat das Forschungsschiff "Polarstern" auf seinen 130 Expeditionen in die Arktis und Antarktis durchgestanden. 40 Jahre hat der Eisbrecher auf dem Buckel. Aktuell befindet sich das Schiff mit einem Expeditionsteam vom Alfred-Wegener-Institut (AWI) und der Universität Bremen in der Antarktis.
Artico & Antart. sciogl. del ghiaccioAntarktis: Neue Messungen zum Abschmelzen des Thwaites-Gletschers
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Artico & Antart. sciogl. del ghiaccio livello del mare‘Extreme situation’: Antarctic sea ice hits record low
The area of sea ice around Antarctica has hit a record low, with scientists reporting “never having seen such an extreme situation before”. The ice extent is expected to shrink even further before this year’s summer melting season ends.
Artico & Antart. sciogl. del ghiaccioAntarctic Researchers Report an Extraordinary Marine Heatwave That Could Threaten Antarctica’s Ice Shelves
Skip to content Science Antarctic Researchers Report an Extraordinary Marine Heatwave That Could Threaten Antarctica’s Ice Shelves The inexorable rise of ocean heat is now evident off the coast of West Antarctica, potentially disrupting critical parts of the global climate system and accelerating
Artico & Antart. sciogl. del ghiaccio livello del mareAntarktische Gletscherschmelze - Forscher bohren Loch durch antarktischen Riesengletscher
Wenn der Thwaites-Gletscher verschwindet, steigt der Meeresspiegel stark an. Die ganze Westantarktis könnte in den Abschmelzungsstrudel geraten. Der riesige Thwaites-Gletscher ragt von der Antarktis als sogenanntes Schelfeis weit ins Meer hinaus.
Artico & Antart. sciogl. del ghiaccioHow Tensions With Russia Are Jeopardizing Key Arctic Research
With the Ukraine war, international collaborations with Russia on Arctic research and oversight have been strained or broken off. This loss of critical cooperation is compromising efforts to confront mounting environmental risks in the Arctic, from shrinking sea ice to pollution.
Artico & Antart. conflitti Russia guerra in Ucraina‘Extreme’ Changes Underway in Some of Antarctica’s Biggest Glaciers
Antarctica's glaciers carry ice from the interior of the continent to the ocean. This NASA illustration shows where the ice is moving fastest; areas in red have the fastest flow, followed by those in pink and purple. Credit: NASA Goddard Space Flight Center
Artico & Antart. sciogl. del ghiaccioEisschild in der Antarktis: Lässt sich der Kollaps des Thwaites-Gletschers doch noch verhindern?
Lässt sich der Kollaps des Thwaites-Gletschers doch noch verhindern? Um dieses Video zu schauen, müssen Sie sich anmelden Es war im Jahr 2014, als der Glaziologe Ian Joughin von der Universität von Washington im Fachjournal «Science» eine erschreckende Erkenntnis darlegte: Er hatte auf Basis vo
Artico & Antart. apocalisse sciogl. del ghiaccio corrente marina livello del mareNew Study Reveals Arctic Ice, Tracked Both Above and Below, Is Freezing Later
Scientists have known for years that the Arctic is warming faster than the rest of the world—nearly four times faster, according to a recent study. Tracking that warming is critical to understanding climate change not just in the Arctic but around the world. New data and analysis are crucial.
Artico & Antart. sciogl. del ghiaccioScientists Report a Dramatic Drop in the Extent of Antarctic Sea Ice
The new year started with the familiar refrain of climate extremes, as scientists with the National Snow and Ice Data Center reported Jan. 3 that the sea ice around Antarctica dropped to its lowest extent on record for early January.
Artico & Antart. sciogl. del ghiaccioWorld faces ‘terminal’ loss of Arctic sea ice during summers, report warns
The climate crisis has pushed the planet’s stores of ice to a widespread collapse that was “unthinkable just a decade ago”, with Arctic sea ice certain to vanish in summers and ruinous sea level rise from melting glaciers now already in motion, a major new report has warned.
Artico & Antart. apocalisse sciogl. del ghiaccio livello del mareA Warming Siberia, Wracked by Wildfires, Nears a Crucial Threshold
Nearly 23 million acres burned from 1982 to 2020. But almost half of that occurred in 2019 and 2020, and the region may be near a threshold beyond which extreme fires become more common.
Artico & Antart. cicli di feedback Russia incendi forestali** EMPFOHLENE LEKTÜRE ** Notruf aus der Antarktis – Dieser Gletscher bestimmt die Zukunft der Menschheit
1968 schaute die ganze Welt nach oben. Es war das Jahr vor der Mondlandung: Man glaubte, die Zukunft läge im All. Ein Mann aber schaute nach unten. Und er sah, dass die Antarktis und nicht der Mond unser Schicksal bestimmen wird.
Artico & Antart. apocalisse sciogl. del ghiaccio livello del mareGrösster Gletscher der Antarktis droht zu rutschen
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Artico & Antart. sciogl. del ghiaccio livello del mareKlimawandel am Thwaites-Gletscher – Wem gehört die Antarktis – der letzte unbewohnte Ort der Erde?
Klimawandel am Thwaites-Gletscher Wem gehört die Antarktis – der letzte unbewohnte Ort der Erde? Wer sich mit den Folgen des Klimawandels auseinandersetzt, stösst früher oder später auf die Antarktis.
Artico & Antart. geopolitica sciogl. del ghiaccioArctic Ocean acidifying up to four times as fast as other oceans, study finds
Acidification of the western Arctic Ocean is happening three to four times faster than in other ocean basins, a new study has found. The ocean, which absorbs a third of all of the carbon dioxide in the atmosphere, has grown more acidic because of fossil fuel use.
Artico & Antart. ozeaniWhere Thick Ice Sheets in Antarctica Meet the Ground, Small Changes Could Have Big Consequences
Scientists studying the physics and thermodynamics of Antarctica’s ice sheets say they’ve discovered a potential new weak spot that could accelerate melting and sea level rise over the next several hundred years.
Artico & Antart. sciogl. del ghiaccioWhy Arctic fires are releasing more carbon than ever
Smoke from hundreds of wildfires darkened skies over the Alaskan Interior this summer, with the state experiencing its fastest start to the fire season on record amid hot and dry conditions.
Artico & Antart. cicli di feedback permafrost incendi forestali** LECTURE RECOMMANDEE ** La fonte au Groenland rend inévitable une forte élévation de la mer
Les glaciologues auteurs de l'étude publiée dans la revue Nature Climate Change ont constaté que le réchauffement actuel, indépendamment de toute pollution supplémentaire causée par les énergies fossiles, allait entraîner au minimum une perte de 3,3 % du volume de la calotte au Groenland, s
Artico & Antart. sciogl. del ghiaccio livello del mareMajor sea-level rise caused by melting of Greenland ice cap is ‘now inevitable’
Major sea-level rise from the melting of the Greenland ice cap is now inevitable, scientists have found, even if the fossil fuel burning that is driving the climate crisis were to end overnight. The research shows the global heating to date will cause an absolute minimum sea-level rise of 27cm (10.
Artico & Antart. sciogl. del ghiaccio livello del mareStudie aus Finnland – Erderwärmung in Arktis fast viermal schneller als weltweit
Einer neuen Studie von Wissenschaftlern des Finnischen Meteorologischen Instituts in Helsinki zufolge hat sich die arktische Region in den vergangenen 43 Jahren fast viermal so schnell erwärmt wie der globale Durchschnitt.
Artico & Antart. caloreSvalbard, vitrine du réchauffement climatique
Le Svalbard, cet archipel norvégien situé aux portes du pôle Nord, est aux premières loges du réchauffement climatique. En juillet 2020, le thermomètre a battu un record de température: 21,7 degrés, alors que la moyenne estivale ne dépasse généralement pas les 10 degrés.
Artico & Antart. permafrostMalgré les interdictions, la Russie explore l’Antarctique à la recherche d’énormes gisements de pétrole
Rosgeo, l’organisme russe chargé de l’exploitation des ressources minières affirme avoir découvert un gisement gigantesque de 500 milliards de barils de pétrole et de gaz sous les eaux menacées par le climat de l’océan Austral, dans un Antarctique en train de fondre et de se déliter cha
Artico & Antart. energia fossile RussiaA teensy, tiny glimmer of hope for polar bears
Global warming is still threatening polar bears, but new research complicates the story. You know the image well: A lone polar bear, stranded on a piece of floating sea ice. Sometimes the bear looks emaciated. It always seems to look sad.
Artico & Antart. biodiversitàBattleground Antarctica
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Artico & Antart. energia fossile Russia geopolitica conflittiLa forêt boréale opère une migration géante pour échapper au dérèglement climatique
Les forêts boréales – qui constituent le plus grand biome terrestre de la planète – représentent environ 23 % de la superficie forestière de notre planète et subissent généralement moins de pression de la part des activités humaines que les autres régions.
Artico & Antart. boschi‘Black carbon’ threat to Arctic as sea routes open up with global heating
In February last year, a Russian gas tanker, Christophe de Margerie, made history by navigating the icy waters of the northern sea route in mid-winter.
Artico & Antart. cicli di feedback geopolitica sciogl. del ghiaccio logistica & navigazioneAcross the Boreal Forest, Scientists Are Tracking Warming’s Toll
The Marcell Experimental Forest in northern Minnesota. Scientists are simulating different climates in these glass chambers to better understand how boreal forests will respond to rising temperatures. Credit: Oak Ridge National Laboratory/U.S. Department of Energy
Artico & Antart. boschi permafrost40 Grad zu warm für Jahreszeit - «Hitzewelle am Südpol hat jeden bestehenden Rekord pulverisiert»
In den letzten Tagen wurden am Südpol Temperaturen gemessen, die 40 Grad höher sind als normal. Italienische Forschende haben auf Twitter ein Foto geteilt, auf dem sie in Boxershorts posieren, bei für die Antarktis ungewöhnlichen minus 12 Grad Celsius.
Artico & Antart. caloreHeatwaves at both of Earth’s poles alarm climate scientists
Startling heatwaves at both of Earth’s poles are causing alarm among climate scientists, who have warned the “unprecedented” events could signal faster and abrupt climate breakdown. Temperatures in Antarctica reached record levels at the weekend, an astonishing 40C above normal in places.
Artico & Antart. caloreKlimawandel - Antarktisches Meereis erreichte Rekordtief
Im Februar erreichte die Ausdehnung des Meereises um die Antarktis den niedrigsten Wert seit Beginn der Aufzeichnungen. In diesem Jahr erreichte das Meereis um die Antarktis ein neues Minimum. So wenig Meereis wurde in den 44 Jahren seit Beginn der Aufzeichnungen noch nie beobachtet.
Artico & Antart. sciogl. del ghiaccioSea Ice Around Antarctica Reaches a Record Low
The drop surprised scientists, and may help them understand more about climate change affecting Antarctica and its waters. Sea ice around Antarctica has reached a record low in four decades of observations, a new analysis of satellite images shows.
Artico & Antart. sciogl. del ghiaccioGletscherschmelze: Wenn der Kipppunkt längst erreicht ist
Der Pine-Island-Gletscher in der Antarktis verliert Eis. Seine Geschichte zeigt, wie schrumpfende Gletscher den ganzen Planeten verändern werden. Wahrscheinlich gibt es nur wenige Orte auf dem Planeten, die einen so großen Einfluss auf den Rest der Welt haben, wie eine Bucht in der Westantarktis.
Artico & Antart. sciogl. del ghiaccioThe hidden melting of the most important ice on Earth, explained
The future of sea level rise is being written underneath Antarctica and Greenland. The largest ice masses on the planet contain so much water that they’re increasing sea levels around the globe as temperatures rise. Satellites can see these drastic changes from space.
Artico & Antart. sciogl. del ghiaccioPolar bears move into abandoned Arctic weather station – photo essay
Ihad dreamed about photographing polar bears for a long time. Some time ago my hobby, wildlife photography, ceased to be just a hobby and turned into a large part of my life. And if you devote so much time to an activity then your goals should be ambitious.
Artico & Antart. fotografiaLife in one of Canada’s northernmost villages, where the land is sinking into the sea
On the shores of the Arctic Ocean lies the hamlet of Tuktoyaktuk. As ice-free summers have stretched out for longer periods, Tuktoyaktuk’s coastline has become increasingly vulnerable to the open sea, and erosion threatens to render the land uninhabitable. 25 minutes video.
Artico & Antart. permafrost sciogl. del ghiaccioAn Extraordinary Iceberg Is Gone, but Not Forgotten
A chunk of Antarctic ice that was one of the biggest icebergs ever seen has met its end near the island of South Georgia. Scientists will be studying its effects on the ecosystem around the island for some time.
Artico & Antart. sciogl. del ghiaccioLa calotte glaciaire du Groenland a perdu 4700 milliards de tonnes en 20 ans
Ce volume de glace fondue, qui à l'échelle de la superficie des Etats-Unis représente un demi-mètre d'eau, est particulièrement important sur les côtes du territoire autonome danois, selon cette étude basée sur des observations satellitaires du programme "Grace".
Artico & Antart. sciogl. del ghiaccioConocoPhillips’ Plan for Extracting Half-a-Billion Barrels of Crude in Alaska’s Fragile Arctic Presents a Defining Moment for Joe Biden
The shadow of a bush plane falls on the landscape of the National Petroleum Reserve in Alaska. The reserve includes the proposed Willow project. Credit: Andrew Lichtenstein/Corbis via Getty Images
Artico & Antart. energia fossile UsaA Trove of Old Photos Could Reveal the Future of These Arctic Glaciers
The Svalbard Islands, part of Norway, are warming seven times faster than the global average. Aerial pictures from the 1930s are helping researchers understand what that means for the region’s ice.
Artico & Antart. sciogl. del ghiaccio fotografia storia del climaScientists watch giant ‘doomsday’ glacier in Antarctica with concern
Twenty years ago, an area of ice thought to weigh almost 500bn tonnes dramatically broke off the Antarctic continent and shattered into thousands of icebergs into the Weddell Sea.
Artico & Antart. sciogl. del ghiaccio livello del mare'The Fuse Has Been Blown,' and the Doomsday Glacier Is Coming for Us All
One thing that’s hard to grasp about the climate crisis is that big changes can happen fast. In 2019, I was aboard the Nathaniel B. Palmer, a 308-foot-long scientific research vessel, cruising in front of the Thwaites Glacier in Antarctica.
Artico & Antart. sciogl. del ghiaccio livello del mareRisse im Eis: Klimawandel bedroht Thwaites-Gletscher in der Antarktis
Glaziologen haben Risse in der Eisplatte beobachtet, die wie ein Korken vor der Mündung des riesigen Antarktis-Gletschers sitzt. Binnen fünf Jahren könnte sie kollabieren. Einer der größten Gletscher der Antarktis, der Thwaites-Gletscher, verliert offenbar zunehmend seinen Halt.
Artico & Antart. sciogl. del ghiaccio livello del mareAntarktis Wichtiger Eis-Schild könnte innerhalb der nächsten Jahre zerbrechen
Im Westen der Antarktis sorgt der Thwaites-Gletscher dafür, dass das Eis vom Kontinent nicht ins Meer rutscht. Doch nun haben Wissenschaftler entdeckt: Ein Teil des Schelfeises verliert an Halt und könnte auseinanderbrechen.
Artico & Antart. sciogl. del ghiaccio livello del mareUN shipping body agrees voluntary measures to cut black carbon in the Arctic
At the International Maritime Organization (IMO) meeting, countries urged ship operators to switch to cleaner fuels in Arctic waters Ship operators have been urged to switch to cleaner fuels in the Arctic, under a resolution to cut black carbon emissions at the International Maritime Organization (I
Artico & Antart. logistica & navigazioneAntarctica was once a rainforest. Could it be again?
The coldest continent on Earth used to be as warm as Italy. Here’s how we know. Not far from the South Pole, more than half a mile below the ocean in a region that was once covered by ice, a layer of ancient fossils tells a surprising story about the coldest continent on Earth.
Artico & Antart. storia del clima‘The ice sheet is in for a wild ride’: Greenland is seeing record ice loss
Greenland had a quite a year. For the first time in its history, rain fell at its summit. In August, it experienced one of the latest-occurring melt events in recent memory. This also became the third year with major melting events in the past decade.
Artico & Antart. sciogl. del ghiaccio