Satellite images have revealed 11 previously unknown emperor penguin colonies in Antarctica, boosting the number of known colonies of the imperilled birds by 20 percent.Philip Trathan, also at BAS, said: “The new breeding sites are all in locations where recent model projections suggest emperor penguins will decline.
New measurements from the ocean under the centre of the Ross Ice Shelf have significantly improved our understanding of the complex processes that drive melting in Antarctica.
These neutrinos that Anita was searching for would be classified among the most energetic particles in the universe, which physicists believe are produced by the same processes that generate jets of charged particles called ultrahigh-energy cosmic rays.
NIWA researchers have helped unlock information trapped in ancient air samples from Greenland and Antarctica that shows the amount of methane humans are emitting into the atmosphere from fossil fuels has been vastly underestimated.
But step into the Martian-like dry valleys and you’ll be treading on a bustling community of tiny organisms, like nematode worms and ultra-hardy water bears and mites.“Really, that's the charismatic megafauna of continental Antarctica,” says evolutionary ecologist Byron Adams of Brigham Young University, who is currently surveying life on the continent.
So as ice shelves retreat, so does the natural reserve status, precisely at the time blue-carbon zones need strong legal protections.But many have already opposed agreements on Marine Protected Areas in the Southern Oceans, areas much smaller than predicted blue-carbon sites.
NIWA principal fisheries scientist Dr Steve Parker and colleagues were on board the Janas , a deepwater longline vessel owned by Talley’s Group Ltd, for the second voyage ever during the winter to study the ecology of toothfish in the northern Ross Sea, especially to investigate spawning patterns of the Antarctic toothfish.
Called a Sudden Stratospheric Warming (SSW), it occurs when the temperature of the stratosphere (30-50km above ground) over the South Pole rises by more than 25ᵒC.The Southern Hemisphere is characterised by a cold Antarctic continent surrounded by relatively warm seas.
The fiery orange submarine, which she named Ran after the Norse goddess of the sea, hadn’t yet resurfaced from its first mission in the watery depths around the face of West Antarctica’s Thwaites Glacier.“She’s a very temperamental lady,” Wåhlin said of the $3.6 million, unmanned submarine, while peering through her binoculars on an overcast March day.
Moreover, the researchers inferred the existence of five community-level groups of viruses that mapped onto distinct marine ecological zones based on temperature and depth: Arctic, Antarctic, temperate and tropical surface, temperate and tropical subsurface, and deep ocean.
Data gathered during that underwater expedition, which lasted more than 50 hours and covered some 60 miles, is now being fed into climate models to better predict how fast the ice shelf might melt and how its disappearance will affect global sea level rise, the British Antarctic Survey says.
The 21 scientists, supported by 19 crew, have been focusing on gathering baseline information to monitor the year-old Ross Sea Marine Protected Area (MPA). Voyage leader and NIWA scientist Dr Richard O’Driscoll said good weather and a general lack of sea ice enabled science work to continue uninterrupted.
Poutama Hetaraka says he is not only looking forward to experiencing a completely different environment but also to seeing mātauranga Māori become more and more embedded in conversations about environmental management of the Earth and Antarctica in particular”.
Voyage leader Dr Richard O’Driscoll says the main aim of the trip is to increase knowledge about key processes in the Ross Sea and to provide baseline information about the MPA so scientists can start to evaluate its effectiveness.
But some researchers have found a new way to use satellites to figure out what penguins eat by capturing images of the animal’s poop deposits across Antarctica.A group of scientists studying Adélie penguins and climate change have found that the color of penguin droppings indicates whether the animals ate shrimp-like krill (reddish orange) or silverfish (blue).
But he wanted to know what was going on deep below Thwaites, where its ice met the earth.If the mysterious Thwaites Glacier were to “go bad,” it might change the course of civilization.During that 2008 expedition and another a year later, Anandakrishnan’s team performed the geologic equivalent of an ultrasound on Thwaites.
“To do that, we need to find rocks that are the right type, the right age and that are exposed.”The fossils he hopes to find are preserved in sedimentary deposits that exist in several places around the globe, but what makes Antarctica special for fossil hunters is the fact that there is no rain or snow to erode them away.After the fish died those millions of years ago, they were covered by layers of silt and mud in the river delta.
Rather, these penguins, who were mummified by the cold, dry Antarctica environment, likely died from weather on the opposite end of the spectrum: two extremely rainy and snowy events that happened over the past 1,000 years, a new study finds.
TrilobitesNew Antarctica Map Is Like ‘Putting on Glasses for the First Time and Seeing 20/20’A high resolution terrain map of Earth’s frozen continent will help researchers better track changes on the ice as the planet warms.The Larsen C ice shelf in Antarctica in a new map made with satellites operated by a Department of Defense agency.National Geospatial-Intelligence AgencyYou may never make it to the South Pole, but you can now see Antarctica and its glaciers in unprecedented detail.
“It’s not an emergency this year, but I’m very pleased we’re doing it [the project] this decade because we can’t wait too long.”Sam Gyimah, Science Minister, said: “Rising sea levels are a globally important issue which cannot be tackled by one country alone.“The Thwaites Glacier already contributes to rising sea levels and understanding its likely collapse in the coming century is vitally important.”