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Detailed knowledge of the sub-glacial morphology of large ice sheets is essential for … refining ice sheet models and the associated sea-level rise predictions under a warming … environment.
Measurements of mesosphere and lower thermosphere (MLT) winds obtained using a 2 MHz … radar at Davis (68.6S, 78.0E) from 1993 to the present have allowed the compilation of a … climatology of planetary wave activity and horizontal momentum fluxes.
The mid- to high-latitudes of the Southern Hemisphere are dominated by the westerly winds. These are important because changes in their strength determine precipitation and temperature regimes. However, little is known about their past strength, or spatial and temporal variability.
The sub-Antarctic region between 45-60°S is primarily ocean. However, there are a few small isolated islands, most of which are currently facing the combined pressures of climate change and introduced species.
The sub-Antarctic region between 45-60 °S is primarily ocean. However, there are a few small isolated islands, most of which are currently facing the combined pressures of climate change and introduced species.
Sub-Antarctic islands are the only landmasses between Antarctica and South America, Africa and Australia where terrestrial climate and ecosystem records are available, making them crucial locations for linking southern mid and high latitude regions. However…
This study aims to determine the impact of ocean acidification on Southern Ocean pteropods via a detailed understanding of the structural properties of their shells. Scanning electron microscopy (SEM)…
Our aim was to estimate the population of emperor penguins (Aptenodytes fosteri) using a single synoptic survey. We examined the whole continental coastline of Antarctica using a combination of medium resolution and Very High Resolution (VHR)…
The Southern Hemisphere (SH) is relatively data sparse in terms of ozone monitoring, particularly in the mid-latitudes where there are few long term records. The Australian Bureau of Meteorology possesses continuous datasets from the Australian region dating back to the 1950s (Dobson) or 1960s…
Sensitivity of sea ice formation and dense shelf water production to perturbations of … air temperature, precipitation, and wind stress in an important Antarctic coastal polynya … system is investigated.
Interdecadal water mass changes in the Indian -Western … Pacific sectors of the Southern Ocean were investigated … using the Japanese Antarctic Research Expeditions and … historical hydrographic observations from the 1950s to … 1990s.
Climatological monthly upper-ocean temperature anomalies from the annual mean in the subtropical southwest … Pacific Ocean show a characteristic out-of-phase relationship between the mixed layer and the underlying water.
In the Indian Ocean subtropical gyre, historical temperature, salinity, and oxygen data with a median date of … 1962 are compared with a hydrographic section taken at a mean latitude of 328S in October–November 1987.
Abstract: Two sediment cores collected from beneath the Amery Ice Shelf, East Antarctica describe the … physical sedimentation patterns beneath an existing major embayed ice shelf. Core AM01b was collected … from a site of basal freezing, contrasting with core AM02…
This paper presents extensive {bias determination} analyses of ozone observations from the Atmospheric Chemistry Experiment (ACE) satellite instruments: the ACE Fourier Transform Spectrometer (ACE-FTS)…
1. The management of non-indigenous species is not without its complications. In Bergstromet al.’s (2009) study, we demonstrated that feral cats Felis catus on sub-Antarctic Macquarie Island were exerting top-downcontrol on the feral rabbit Oryctolagus cuniculus population…
Arctic ecosystems and global climate are closely related. This paper studies the distributions and the coupling relationship between Chlorophyll a (Chl a) and aerosol optical thickness (AOD) in Greenland Sea (10 degrees W - 10 degrees E, 70 degrees N - 85 degrees N)…
The recent distributional history of two Macquarie … Island vascular plant species, Carex trifida, Poa … litorosa, and the Heard Island vascular plant, Ranunculus … crassipes is examined. C. trifida is known from only … one small population on the north west coast of Macquarie … Island.
Historically, king penguin populations on Macquarie Island have suffered greatly from human exploitation. Two large colonies on the island were drastically reduced to a single small colony as a result of harvesting for the blubber oil industry. However…