Satellite images acquired by the Operational Land Imager (OLI) show melting on the ice cap of Eagle Island, Antarctica on 4 February 2020 and 13 February 2020. Photo: Joshua Stevens / NASA Earth Observatory

Image of the Day: Antarctica melts under its hottest days on record

By Kasha Patel 21 February 2020 (NASA) – On 6 February 2020, weather stations recorded the hottest temperature on record for Antarctica. Thermometers at the Esperanza Base on the northern tip of the Antarctic Peninsula reached 18.3°C (64.9°F)—around the same temperature as Los Angeles that day. The warm spell caused widespread melting on nearby glaciers. The warm […]

Global surface temperature anomalies, 1880-2019, compared with the 1880-1899 average. The year 2019 was the second warmest year on record, capping the warmest decade since measurements began. Data: Gavin Schmidt / NASA GISTEMP. Graphic: InsideClimate

2010-2019: Earth’s hottest decade on record marked by extreme storms, deadly wildfires – “The climate of the 20th Century is gone. We’re in a new neighborhood.”

By Bob Berwyn 19 December 2019 (InsideClimate News) – Deadly heat waves, wildfires and widespread flooding punctuated a decade of climate extremes that, by many scientific accounts, show global warming kicking into overdrive. As the year drew to a close, scientists were confidently saying 2019 was Earth’s second-warmest recorded year on record, capping the warmest […]

Animation showing the age of the Arctic sea ice between 2015 and 2019. Video: NASA

35 years of climate change in one video

By Johnny Wood 18 November 2019 (WEF) – Q: If you subtract 95 percent from something, what’s left? A: An environmental crisis. The “something” in question is the oldest and thickest solid layer of frozen water in the Arctic Ocean, which is melting so rapidly that just 5% of its original mass remains. Scientists from the […]

The pattern of normalized relative sea-level (RSL) from Glacial Isostatic Adjustement (GIA) simulations of a 20-m rise in eustatic sea level (ESL). Graphic: Grant, et al., 2019 / Nature

If warming exceeds 2°C, Antarctica’s melting ice sheets could raise seas 20 meters in coming centuries

By Georgia Rose Grant and Timothy Naish 2 October 2019 (The Conversation) – We know that our planet has experienced warmer periods in the past, during the Pliocene geological epoch around three million years ago. Our research, published today, shows that up to one third of Antarctica’s ice sheet melted during this period, causing sea levels to rise […]

Linkages between Amundsen Sea winds and global SST and SLP. Time series of zonal wind and zonal total stress over the PITT box, the SOI and the IPO. The legend shows the unit for each time series, and scaling for the axis values where appropriate. Graphic: Holland, et al., 2019 / Nature Geoscience

First evidence of human-caused climate change melting the West Antarctic Ice Sheet

12 August 2019 (British Antarctic Survey) – A new study published this week reveals the first evidence of a direct link between human-induced global warming and melting of the West Antarctic Ice Sheet. UK-US researchers say that curbing greenhouse gas emissions now could reduce the future sea-level contribution from this region. Ice loss in West […]

Stability diagram of the West Antarctic Ice Sheet (WAIS), rate R versus duration T of mass addition with unstable regime in red and stable regime in blue. Interpolation of the field is based on the conducted ensemble of stabilization experiments (gray circles). The critical threshold Rc (white curve) of stabilization is approximated by function given at the top right corner. White stars highlight simulations that share the same total amount of deposited mass (M = 8000 Gt), added at differing rate and duration, showing that the combination of both determines potential stabilization. Graphic: Feldmann, et al., 2019 / Science Advances

Adding 8 trillion tons of artificial snow to the West Antarctic Ice Sheet could stop it from collapsing – “The fundamental trade-off is whether we as humanity want to sacrifice Antarctica to save the currently inhabited coastal regions”

By Katherine J. Wu 17 July 2019 (PBS) – Gird your loins, humans: The time has come to turn part of the South Pole into our own giant snow globe. Or has it? In a study published today in the journal Science Advances, a team of German researchers suggests that dumping 8 trillion tons of artificial snow onto […]

Hurtigruten’s cruise ship MS Roald Amundsen is seen in the sea near Ulsteinvik, Norway, on 1 July 2019. The Roald Amundsen is the world’s first cruise ship propelled partially by battery power and is set to head out from northern Norway on its maiden voyage, cruise operator Hurtigruten said on Monday. The hybrid expedition cruise ship can take 500 passengers and is designed to sail in harsh climate waters. Named after the Norwegian explorer who navigated the Northwest Passage in 1903-1906 and was first to reach the South Pole in 1911, the ship heads for the Arctic from Tromsø this week and will sail the Northwest Passage to Alaska before heading south, reaching Antarctica in October 2019. Photo: Hurtigruten / Reuters

First hybrid electric cruise ship sails for the Arctic

By Victoria Klesty 1 July 2019 OSLO (Reuters) – The world’s first cruise ship propelled partially by battery power is set to head out from northern Norway on its maiden voyage, cruise operator Hurtigruten said on Monday. The hybrid expedition cruise ship, the Roald Amundsen, can take 500 passengers and is designed to sail in […]

Annual average sea-ice extent in the Southern Ocean, 1979-2019. Sea ice extent in Antarctica has plunged since 2014. Data: Parkinson, 2019 / Proceedings of the National Academy of Sciences. Graphic: The Guardian

“Precipitous” fall in Antarctic sea ice since 2014 revealed – “The rapid decline has caught us by surprise and changes the picture completely”

By Damian Carrington 1 July 2019 (The Guardian) – The vast expanse of sea ice around Antarctica has suffered a “precipitous” fall since 2014, satellite data shows, and fell at a faster rate than seen in the Arctic. The plunge in the average annual extent means Antarctica lost as much sea ice in four years […]

Global sea level rise with the Thwaites Glacier and the ice of the West Antarctic Ice Sheet. Graphic: PRI

Scientists race against time to find out if Antarctica’s Thwaites Glacier is doomed – “This is where rapid change is really happening, and we’re actually standing and looking at the bit that’s rapidly changing”

By Carolyn Beeler 13 May 2019 (PRI) – Peter Sheehan, an oceanographer on the Nathaniel B. Palmer, was one of the first people on Earth to get this view of Thwaites Glacier — the part that juts out to sea. He’s pored over plenty of Google images of ice shelves, but there’s nothing like the […]

Sea level rise could displace millions of people within two generations

By Jonathan Bamber and Michael Oppenheimer 20 May 2019 (The Conversation) – Antarctica is further from civilisation than any other place on Earth. The Greenland ice sheet is closer to home but around one tenth the size of its southern sibling. Together, these two ice masses hold enough frozen water to raise global mean sea […]

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