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For Emperor penguins (Aptenodytes forsteri), huddling is the key to survival during the Antarctic winter. Penguins in a … huddle are packed so tightly that individual movements become impossible, reminiscent of a jamming transition in … compacted colloids. It is crucial, however…
The Antarctic ice sheet holds a wealth of information on past climate variability, locked away in successive layers buried by further snowfall. In the coastal regions of Antarctica, snowfall rates can be high enough to hold layers of climate data on monthly, or better, time resolution.
Effects of ocean acidification in conjunction with temperature change warrants investigation as little is known about potential interactive effects of these parameters on Antarctic benthic species.
Ultraviolet radiation (UV) is a minor fraction of the solar spectrum reaching the ground surface. In this assessment we summarize the results of previous work on the effects of the UV-B component (280-315 nm) on terrestrial ecosystems…
The global climate is intimately connected to changes in the polar oceans. The variability of … sea ice coverage affects deep-water formations and large-scale thermohaline circulation patterns. The … polar radiative budget is sensitive to sea-ice loss and consequent surface albedo changes.
Ozone in the troposphere has four important roles. Tropospheric ozone is a greenhouse gas…
A baseline for persistent organohalogen compound (POC) accumulation in the Antarctic … keystone species, Antarctic krill (Euphausia superba) has been established for a 50¡ã longitudinal … range of the eastern Antarctic sector. Samples of adult krill…
Data from a new regional airborne geophysical survey (ICECAP) has transformed our appreciation of the topography … and glaciology associated with the Aurora Subglacial Basin in East Antarctica. Using these data in conjunction … with numerical ice sheet modelling…
Abstract Samples of marine ice were collected from … the Amery Ice Shelf, a large embayed ice shelf in East … Antarctica, during the Austral summer of 2001–2002. The samples came from a site ~90 km from the iceberg … calving front of the shelf…
Simulations of the ocean dynamics in the cavity under the Amery Ice Shelf, Antarctica, were carried out using a three-dimensional numerical ocean model. Two different boundary conditions were used to describe the open ocean barotropic exchange at the ice front.
Observations and modelling described by Becker and Fritts [Ann Geophys, 24, 1175-1188, 2006] suggests that wintertime planetary wave activity, and the gravity-wave filtering … associated with it…