The mass loss of the Greenlandic ice sheet accounts for more than a quarter of global sea level rise. Scientists anxiously observe the increasing impact of climate change on the entire ice sheet.
In the past, the Antarctic was hit by meteorites and meteors several times. Traces are found on Antarctica on several occasions rather easily. However, the subantarctic islands and surrounding oceans are harder to screen due to the depth of the basins. An international team of scientists now has found a large crater near the Falkland Island archipelago. They estimate the age of approximately 250 million years and consider it one of the largest craters in the world.
It is said that economics and ecology seldom go hand in hand. However, Norwegian entrepreneur Kjell Inge Røkke and his family present a perfect example to prove the general opinion wrong. Røkke has revealed plans for a brand new ice-strengthened research expedition vessel REV which will be built in cooperation with the World Wildlife Fund (WWF). According to the plans, the yet unnamed ship will be ready in 2020 to set sail.
The coastline of Newfoundland in eastern Canada has received increased attention due to a large number of unexpected visitors. For weeks, a larger than usual amount of icebergs and drifting sea ice has been washed up along the shores of the islands. For tourists and locals alike, the bergs and ice pose a spectacular photo motive while sailors and International Ice Patrol worry about the impact on shipping lanes and marine traffic.
Gentoo penguins are tough generalists and are capable to withstand the harsh Antarctic climate. However, the tremendous force of volcanic eruptions, as had happened on Deception Island, had put colonies close to extinction several times over the last 7,000 years. This is the result of a study conducted by researchers from British Antarctic Survey (BAS), which they published recently in Nature Communications.
The Franz-Josef-Land archipelago is the northernmost landmass and is part of Motherland Russia. Considered as the western gateway into the Northeast Passage as well as to the North Pole, it is strategically important to the government in Moscow. With the renewed interest in the Arctic and its resources by Russia, authorities had made the establishment of a military base on one of the archipelago’s islands the highest priority. Now, after 3 years of construction, the complex at Nagurskoye Base on Aleksandra Island has opened its doors and was visited by president Putin and a high profile delegation.
Antarctica has about 10 per cent less sea ice this year compared to the previous record minimum - a stunning reversal after an all-time high was recorded in 2014. In March 2017 the sea ice extent around Antarctica has shrunk to 2.1091 million square kilometres.
The mixing or hybridization between polar and brown bears appears to be easier than previously expected. Senckenberg scientists have sequenced the entire genomes of four bear species, making it now possible to analyze the evolutionary history of all bears at the genome level. It shows that gene flow, or gene exchange, between species by extensive hybridization, is possible between most bear species - not only polar and brown bear. The DNA samples of different bear species came from different European zoos, underlining their importance not only for conservation, but also for research. The study published today in "Nature Scientific Reports" also questions the existing species concept in general, because other genome studies too have, frequently found gene flow among species.
The research vessel Polarstern entered its homeport with the early-morning high tide on Thursday, 20 April 2017, marking the end of a five-month season in the Antarctic for the icebreaker and her crew. Many geoscientists in Bremerhaven can’t wait to see the samples that were collected during a six-week foray into the Amundsen Sea this February and March, which are expected to help decode the glacial history of West Antarctica and improve the accuracy of prognoses for future sea-level rises. Once the samples have been unloaded, preparations will begin for the “Open Ship” event on 22 and 23 April, when the Polarstern will open her doors to the public.
Antarctica is the highest, driest, coldest and windiest continent on earth. The lowest temperature yet recorded by ground measurements for the Antarctic Region, and for the whole world, was -89.2°C at Vostok station on 21 July 1983. But how warm does it get? That was the question posed last year to the World Meteorological Organization (WMO), the United Nations funded body that oversees meteorology and weather observations worldwide. A New Zealand scientist was part of an international group of experts who have identified the highest temperatures ever recorded in Antarctica.