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The role played by Southern Hemisphere sea ice in the global climate system is explored using an earth … system climate model of intermediate complexity.
Archived in glaciers and ice sheets are long term records … of dustiness. Dust impacts Earth’s radiative forcing directly by … modifying the radiation budget and affecting cloud nucleation … and optical properties, and indirectly through ocean … fertilization which alters carbon sequestration.
The dual Tasman International Geospace Environment Radar (TIGER) HF radars regularly … observe E-region echoes at sub-auroral magnetic latitudes 58°-60°S including during … geomagnetic storms.
A statistical analysis of short-range E-region echoes observed by the SuperDARN HF radars in … the evening sector (16-22 MLT) over 3 years near the solar cycle peak is presented. Significant … populations of the high-velocity (350-450 m/s)…
AB: We investigate the storm-time E-region backscatter observed by the … Tasman International Geospace Environment Radar (TIGER) HF radars. In … the afternoon sector during the negative geomagnetic storm phase…
A new all-sky imaging Fabry-Perot spectrometer has been installed at … Mawson station (67°36' S, 62°52' E), Antarctica. This instrument is capable … of recording independent spectra from many tens of locations across the sky … simultaneously. Useful operation began in March 2007…
: SuperDARN (SuperDual Auroral Radar Network) provides multi-point … observations of ionospheric flows over both southern and northern … hemisphere auroral regions and similarly GPS TEC and tomography … observations provide images of structures in the ionosphere and … plasmasphere.
A simplified three dimensional, time-dependant model of a small region … of Earth's thermosphere is being developed to investigate dynamical … processes over spatial scales of less than 100 km. Because hydrostatic … equilibrium is not enforced in the model…
We present the Gattini project: a multisite campaign to measure the optical sky properties above the two high altitude … Antarctic astronomical sites of Dome C and Dome A. The Gattini-DomeC project, part of the IRAIT site testing … campaign and ongoing since January 2006…
The diffusion of meteor trails has recently been exploited to estimate temperatures in the 80-100 km region of … the atmosphere. More recent modeling work suggests that meteoric dust laid down by the trails themselves will … affect the diffusion of the trails.
The unique atmospheric characteristics found at Dome C on the Antarctic plateau offer significant … advantages for the operation of adaptive optics systems.
Adélie penguin (Pygoscelis adeliae) diet is an important indicator of prevailing environmental conditions and … resource availability. In this study, dietary variation within and between years was studied with fatty acid … signature analysis (FASA), stomach content analysis (SCA)…
DNA-based techniques have proven useful for defining trophic links in a variety of … ecosystems and recently developed sequencing technologies provide new opportunities … for dietary studies. We investigated the diet of Australian fur seals (Arctocephalus pusillus … doriferus)…
We investigated whether diet composition determined from stable-isotope analysis … (SIA) was similar to that determined from stomach content analysis for Ad¨¦lie penguins Pygoscelis … adeliae.
The stability of Antarctic Bottom Water (AABW) to freshwater (FW) perturbations is investigated in a … coupled climate model of intermediate complexity. It is found that AABW is stable to surface freshwater … fluxes greater in volume and rate to those that permanently “shut down”…
Mitochondrial ribosomal DNA is commonly used in DNA-based dietary … analyses. In such studies, these sequences are generally assumed to be the … only version present in DNA of the organism of interest. However…
Knowledge of penguin abundance at regional and circumpolar scales across the Southern Ocean is important … for the development of ecosystem models and to estimate prey consumption by penguins to assess potential competition … with fisheries’ operations.
Ice cores provide a suite of proxy variables which respond to potentially complex and non-linear interactions between … many climatic and environmental variables. This complexity can obscure identification of links between ice core … measurements and classical climate variables.
Satellite remote sensing observations of three break-up events in 2008 for the Wilkins Ice Shelf (28 February … to 6 March, 27 May to 31 May, and 28 June to mid-July) provide unprecedented detail of ice shelf calving … during rapid break-up.
The susceptibility of three East Antarctic moss species to UV-B radiation was examined by measuring accumulation of cyclobutane pyrimidine dimers under natural sunlight during the austral summer season of 2002/03.
A newsurfacewave seismic tomography model of Australia is presented which provides a means of investigating … the lithospheric structure beneath the Proterozoic regions in the west, north and centre of the … continent with improved resolution and reliability.