Polarstern’s biggest fish catch in 24 years of research in Antarctic waters. New hope for commercial fisheries? Quite the opposite, a good catch doesn’t necessarily mean that depleted stocks have recovered. Five tons of marbled Antarctic cod (Notothenia rossii), now that was surely a big surprise to scientists and crew alike considering that previous and subsequent hauls barely ever reaped such plentiful harvests. Their shimmering silver and dark blue bodies, which can grow up to 70cm, were piled on the aft deck of Polarstern. In combination with previous stock assessments, fisheries biologists onboard interpreted the catch as a sampling of a discrete, small-scale aggregation of this fish species. ...

IceCube is a neutrino observatory for astrophysics to be installed at the South Pole over seven austral summers ending in 2011. IceCube will look for extremely high-energy neutrinos coming from the northern sky whose sources are active galactic nuclei, supernova remnents, gamma-ray bursts, and active supernovae. The IceCube In-Ice detector will consist of a minimum of 4800 optical modules deployed on 80 vertical strings buried 1450 to 2450 meters under the surface of the ice, and an IceTop surface air-shower detector array comprised of a minimum of 320 optical modules. By early 2008, one half of the detector, 40 strings with 2400 optical modules, was collecting, storing and analyzing data. Weekly updates during the austral season, November-January, are posted here.

IceCube is an international project sponsored and conducted by the United States and several non-U.S. countries. The United States National Science Foundation supplies funds for the design, development, fabrication, procurement, testing, drilling and operations of the project at the South Pole.

This Activity involves science and social science research that has been initiated as a result of the recent melting of glaciers and alpine ice patches. Melting of these scientific “deep freezes”, is providing unanticipated data sources that are giving us insight into past northern societies, flora/fauna, environments, and their changes through time.

The overall objective of IPY Arctic GOOS to develop and implement operational monitoring and forecasting systems in the Arctic Ocean and adjacent seas. The systems will be based on state-of-the-art remote sensing, in situ observations, numerical modelling, data assimilation and dissemination techniques. Several components of Arctic GOOS are presently in operation, producing daily information that can be downloaded from web sites.

Thawing permafrost could release large amounts of greenhouse gases to the atmosphere causing even more global warming !

This initiative was launched because there is considerable concern and increased awareness both within the international scientific community and the general public about the effects that global warming could have on frozen grounds in Arctic regions (Main Photo). A significant proportion of this permafrost would start to thaw out over the coming decades, with a potential release of large amounts of greenhouse gases (both carbon dioxide and the much more potent methane) to the atmosphere from previously frozen soil organic matter that will start to decompose. This is a so-called positive feedback within the Earth System, as climate warming results in permafrost thawing that causes a further increase of greenhouse gases in the Earth's atmosphere resulting in even more warming. We are not dealing only with a gradual process related to progressive thawing of the ground with depth over time. Also more dramatic events like ground subsidence due to melting of buried ice bodies (Photo 2) and lateral erosion along the edges of thaw lakes (Photo 3) would accelerate the release of greenhouse gases.

Polar View brings together multiple satellite observations and a network of expert providers to deliver a range of polar monitoring services. Via an international consortium, funded by the European Space Agency, Polar View is delivering accurate, near real time information about sea ice conditions in the Arctic and Antarctic. Additionally it provides snow and glacier information, plus data about river and lake ice break up for hydrology and flood risk mitigation.

As part of IPY, Polar View has extended the sea ice services to being together all operational sea ice information into the IPY Ice Logistics Portal. This provides a convenient point of access to operational sea ice information produced by the world's ice services and Polar View. Access to products is provided via a series of pre-defined regions for both the Arctic and the Antarctic.

During glacial periods ice sheets move faster along so called ‘ice streams’. Ice streams leave footprints on the seafloor when the ice is grounded below the sealevel. This project aims at developing new models of fast ice flow in ice-streams based on analyses of the geological record of past ice-streams.