Popular Antarctic News and Current Events

Popular Antarctic News and Current Events, Antarctic News Articles.
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Glaciers accelerate in the Getz region of West Antarctica
Glaciers in West Antarctica are moving more quickly from land into the ocean, contributing to rising global sea levels. A 25-year record of satellite observations has been used to show widespread increases in ice speed across the Getz sector for the first time, with some ice accelerating into the ocean by nearly 50%. (2021-02-23)

NASA study: First direct proof of ozone hole recovery due to chemicals ban
For the first time, scientists have shown through direct satellite observations of the ozone hole that levels of ozone-destroying chlorine are declining, resulting in less ozone depletion. (2018-01-04)

First evidence of under-ice volcanic eruption in Antarctica
The first evidence of a volcanic eruption from beneath Antarctica's most rapidly changing ice sheet is reported this week in the journal Nature Geosciences. The volcano on the West Antarctic Ice Sheet erupted 2,000 years ago and remains active. Using airborne ice-sounding radar, scientists from British Antarctic Survey discovered a layer of ash produced by a (2008-01-20)

Mysterious climate change
New research findings underline the crucial role that sea ice throughout the Southern Ocean played for atmospheric CO2 in times of rapid climate change in the past. An international team with the participation of the University of Bonn has shown that the seasonal growth and destruction of sea ice in a warming world increases the biological productivity of the seas around Antarctica by extracting carbon from the atmosphere and storing it in the deep ocean. (2020-06-22)

Kidnapping in the Antarctic animal world?
Pteropods or sea snails, also called sea angels, produce chemical deterrents to ward off predators, and some species of amphipods take advantage of this by carrying pteropods piggyback to gain protection from their voracious predators. (2018-09-10)

In Antarctic dry valleys, early signs of climate change-induced shifts in soil
In a study spanning two decades, a team of researchers found declining numbers of soil fauna, nematodes and other animal species in the McMurdo Dry Valleys, one of the world's driest and coldest deserts. (2018-01-05)

Thought Antarctica's biodiversity was doing well? Think again
Antarctica and the Southern Ocean are not in better environmental shape than the rest of the world. (2017-04-25)

Poor outlook for biodiversity in Antarctica
The popular view that Antarctica and the Southern Ocean are in a much better environmental shape than the rest of the world has been brought into question in a study publishing on March 28 in the open access journal PLOS Biology, by an international team lead by Steven L. Chown and Monash University scientists. (2017-03-28)

Mammals and birds could have best shot at surviving climate change 
New research that analyzed more than 270 million years of data on animals shows that mammals and birds -- both warm-blooded animals -- may have a better chance of evolving and adapting to the Earth's rapidly changing climate than their cold-blooded peers, reptiles and amphibians. (2018-01-29)

Update on the Larsen-C iceberg breakaway
Since an iceberg four times the size of London broke free earlier this month, scientists have continued to track its progress using satellites. Their observations show the Larsen-C story might not be over yet. (2017-08-02)

World's largest volcanic range may lurk beneath Antarctic ice
West Antarctica's vast ice sheet conceals what may be the largest volcanic region on earth, research has revealed. (2017-08-14)

Ozone hole recovery may reshape southern hemisphere climate change
A full recovery of the stratospheric ozone hole could modify climate change in the southern hemisphere and even amplify Antarctic warming, according to scientists from the University of Colorado at Boulder, the National Oceanic and Atmospheric Administration and NASA. (2008-04-24)

NOAA finds rising emissions of ozone-destroying chemical banned by Montreal Protocol
Emissions of one of the chemicals most responsible for the Antarctic ozone hole are on the rise, despite an international treaty that required an end to its production in 2010, a new NOAA study shows. (2018-05-16)

Melting of east Antarctic ice sheet could cripple major US cities
Instability of the East Antarctic Ice Sheet signals increased risk of rising sea levels. (2017-12-13)

The private lives of sharks
White sharks are top predators in the marine environment, but unlike their terrestrial counterparts, very little is known about their predatory activity underwater, with current knowledge limited to surface predation events. Now, a team of international scientists has used video- and data-logging technology to shed new light on predator-prey interactions of these mighty sea creatures. Their findings were published on July 4, 2019 in Marine Ecology Progress Series. (2019-10-01)

Climate variability -- past and future
On the basis of a unique global comparison of data from core samples extracted from the ocean floor and the polar ice sheets, AWI researchers have now demonstrated that, though climate changes have indeed decreased around the globe from glacial to interglacial periods, the difference is by no means as pronounced as previously assumed (Nature advanced online publication). Until now, it was believed that glacial periods were characterised by extreme temperature variability, while interglacial periods were relatively stable. (2018-02-05)

Iguana-sized dinosaur cousin discovered in Antarctica
Scientists have discovered the fossils of an iguana-sized reptile, which they named 'Antarctic king,' that lived at the South Pole 250 million years ago (it used to be warmer). Antarctanax was an early cousin of the dinosaurs, and it shows how life bounced back after the world's biggest mass extinction. (2019-01-31)

Antarctica's biodiversity is under threat
A unique international study has debunked the popular view that Antarctica and the Southern Ocean are in much better ecological shape than the rest of the world. (2017-04-20)

New Zealand penguins make mammoth migrations, traveling thousands of kilometers to feed
Fiordland penguins, Eudyptes pachyrhynchus, known as Tawaki, migrate up to 2,500 km from their breeding site, according to a study publishing Aug. 29 in the open-access journal PLOS ONE by Thomas Mattern of the University of Otago and colleagues. (2018-08-29)

Antarctic ice loss
Professor Jonathan Bamber at the University of Bristol and colleagues estimated the flux of ice from the ice sheet into the ocean from satellite data that cover 85 percent of Antarctica's coastline. They arrived at a best estimate of a loss of 132 billion tons of ice in 2006 from West Antarctica -- up from about 83 billion tons in 1996 -- and a loss of about 60 billion tons in 2006 from the Antarctic Peninsula. (2008-01-13)

My, what big teeth you had! Extinct species had large teeth on roof of mouth
Paleontologists have found a previously unknown amphibious predator that probably made the Antarctica of 240 million years ago something less than a hospitable place. (2008-09-11)

Humpback whale population on the rise after near miss with extinction
A new study finds that the western South Atlantic humpback population has grown to 25,000 whales. Researchers believe this new estimate is now close to pre-whaling numbers. (2019-10-21)

A thermometer for the oceans
The average sea temperature is an essential parameter of the global climate - but it is very difficult to measure. At least until now, because an international team of researchers including Empa scientists have now developed a novel method using the concentration of noble gases in the eternal ice. This allows conclusions to be drawn on the changes in sea temperature from the last ice age to the present day, as the researchers report in the current issue of Nature. (2018-01-04)

Albatross populations in decline from fishing and environmental change
The populations of wandering, black-browed and grey-headed albatrosses have halved over the last 35 years on sub-antarctic Bird Island according to a new study published today (Nov. 20) in the journal Proceedings of the National Academy of Sciences. (2017-11-20)

New study reveals strong El Niño events cause large changes in Antarctic ice shelves
A new study reveals that strong El Nino events can cause significant ice loss in some Antarctic ice shelves while the opposite may occur during strong La Nina events. (2018-01-08)

Ozone at lower latitudes is not recovering, despite Antarctic ozone hole healing
The ozone layer -- which protects us from harmful ultraviolet radiation -- is recovering at the poles, but unexpected decreases in part of the atmosphere may be preventing recovery at lower latitudes. (2018-02-06)

Shedding light on the science of auroral breakups
Japanese scientists have quantitatively confirmed how energetic an auroral breakup can be. Using a combination of cutting-edge ground-based technology and new space-borne observations, they have demonstrated the essential role of an auroral breakup in ionizing the deep atmosphere. The research furthers our understanding of one of the most visually stunning natural phenomena. (2019-02-08)

UGR researchers put a geophysical database of Antarctica at the disposal of the scientific community
It is the first time that such a large amount of diverse data associated with a research project is freely shared. (2017-11-29)

Ozone recovery may be delayed by unregulated chemicals
Recent increases in an unregulated ozone-depleting substance, could delay recovery of Antarctic ozone levels by 5-30 years, depending on emissions scenarios. The findings, published in Nature Communications, suggest that a previously ignored chemical called dichloromethane may now be contributing to ozone depletion. (2017-06-27)

Global sea levels have risen 6 meters or more with just slight global warming
A new review analyzing three decades of research on the historic effects of melting polar ice sheets found that global sea levels have risen at least six meters, or about 20 feet, above present levels on multiple occasions over the past three million years. What is most concerning is that amount of melting was caused by an increase of only 1-2 degrees (Celsius) in global mean temperatures. (2015-07-09)

New Antarctic geological timeline aids future sea-level predictions
Radiocarbon dates of tiny fossilized marine animals found in Antarctica's seabed sediments offer new clues about the recent rapid ice loss from the West Antarctic Ice Sheet and help scientists make better predictions about future sea-level rise. This region of the icy continent is thought to be vulnerable to regional climate warming and changes in ocean circulation. (2013-01-16)

Emperor penguins may shorten record fast by snacking
Male emperor penguins are famed for their feats of endurance, fasting for 115 days during the mating season and while incubating eggs. However, some emperor penguin colonies are situated closer to the sea ice edge; might they have shorter fasts? During the Antarctic winter, Gerald Kooyman observed Cape Washington emperor penguins diving in the dark, suggesting that they might be feeding during the mating season, shortening their fast to as little as 65 days. (2018-01-09)

Scientists drill to record depths in West Antarctica
A team of scientists and engineers has for the first time successfully drilled over two kilometres through the ice sheet in West Antarctica using hot water. This research will help understand how the region will respond to a warming climate. (2019-01-24)

Soot transported from elsewhere in world contributes little to melting of some Antarctic glaciers
Airborne soot produced by wildfires and fossil-fuel combustion and transported to the remote McMurdo Dry Valleys of Antarctica contains levels of black carbon too low to contribute significantly to the melting of local glaciers, according to a new study by researchers supported by the National Science Foundation (NSF). (2018-03-16)

Previously unknown 'supercolony' of Adélie penguins discovered in Antarctica
In a paper released on March 2nd in the journal Scientific Reports, the scientists announced the discovery of a previously unknown 'supercolony' of more than 1,500,000 Adélie Penguins in the Danger Islands, a chain of remote, rocky islands off of the Antarctic Peninsula's northern tip. (2018-03-02)

Seafloor creatures destroyed by ice action during ice ages
New research by marine scientists at National Oceanography Centre, Southampton (NOC) and the British Antarctic Survey (BAS) will mean that text books will have to be rewritten. They reveal that ice ages were a time of mass destruction as whole communities of animals were wiped out by ice sheets scouring the sea floor. (2005-10-17)

Ozone hole modest despite optimum conditions for ozone depletion
The ozone hole that forms in the upper atmosphere over Antarctica each September was slightly above average size in 2018, NOAA and NASA scientists reported today. (2018-11-02)

Warm air helped make 2017 ozone hole smallest since 1988
Measurements from satellites this year showed the hole in Earth's ozone layer that forms over Antarctica each September was the smallest observed since 1988, scientists from NASA and NOAA announced today. (2017-11-02)

Climate change means fish are moving faster than fishing rules, Rutgers-led study says
Climate change is forcing fish species to shift their habitats faster than the world's system for allocating fish stocks, exacerbating international fisheries conflicts, according to a study led by a Rutgers University-New Brunswick researcher. The study, published online in the journal Science today, showed for the first time that new fisheries are likely to appear in more than 70 countries all over the world as a result of climate change. History has shown that newly shared fisheries often spark conflict among nations. (2018-06-14)

Antarctic landscape insights keep ice loss forecasts on the radar
New maps of a mountainous landscape under a key glacier in West Antarctica will be a valuable aid in forecasting sea level changes. (2017-11-20)

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