Scientists made the observations this fall during an oceanographic cruise aboard the Russian icebreaker Kapitan Dranitsyn as part of the Nansen and Amundsen Basins Observational Systems program. Information gathered by the NABOS program, as well as from other international programs, has shown that, during the last decade, the movement of warm water into the Arctic Ocean has increased. And the readings from this fall’s cruise show unprecedented warmth in some areas.
“The large area of the Arctic Ocean promises to become much warmer,” said Igor Polyakov, NABOS principal investigator and a research professor at IARC.
The readings come from observational moorings, which are instrument-bearing buoys that are anchored to the ocean floor and float below the surface of the ocean. These instruments first detected a surge of anomalous warm water, at mid-ocean depths of about 150 to 800 meters below the surface, in February of 2004 on the continental slope of the Laptev Sea, Polyakov said. “What we found this year was one of our eastern moorings also showed a warming signal.”
That finding indicates that the warm water is moving further and further into the Arctic, he said, which could increase the overall temperature of the Arctic Ocean. While the causes of the influx of warm water will require further study, the observations from the NABOS project suggest that the Arctic Ocean is moving toward a warmer state, a change that could have global implications.
Ocean temperature in the Arctic is important because it may affect the amount of sea ice in the region. Scientists believe that arctic sea ice cover plays a major role in the global climate, as ice reflects more of the sun’s heat than open water.
The NABOS project is funded by the National Oceanic and Atmospheric Administration and the National Science Foundation and is a collaboration among six nations. It is one of many UAF projects that will contribute to the international efforts of the upcoming International Polar Year. IPY is a two-year event, slated to begin in March 2007, which will focus research efforts and public attention on the Earth’s polar regions. UAF is among a handful of institutions worldwide that is ideally situated to participate in IPY research, education and outreach.
Marmian Grimes | EurekAlert!
Less radiation in inner Van Allen belt than previously believed
21.03.2017 | DOE/Los Alamos National Laboratory
Mars volcano, Earth's dinosaurs went extinct about the same time
21.03.2017 | NASA/Goddard Space Flight Center
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
23.03.2017 | Health and Medicine
23.03.2017 | Physics and Astronomy
22.03.2017 | Materials Sciences