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The spatio-temporal variability in the upwelling of iron-rich Upper Circumpolar Deep Water (UCDW) is thought to have a significant impact on primary production in the Southern Ocean, since iron has been shown to be a limiting nutrient in an otherwise high nutrient region.
It is generally accepted that surface freshwater … anomalies in the Southern Ocean drive increases in North … Atlantic Deep Water (NADW) formation via a bipolar … density see-saw. We find that a Southern Ocean freshwater … pulse of comparable magnitude to meltwater pulse 1A, shuts down…
The role played by Southern Hemisphere sea ice in the global climate system is explored using an earth … system climate model of intermediate complexity.
The natural variability of the Weddell Sea variety of Antarctic Bottom Water (AABW) is examined in … a long-term integration of a coupled climate model. Examination of passive tracer concentrations suggests … that the model AABW is predominantly sourced in the Weddell Sea.
Sea ice is a critical but poorly understood component of … Earth’s climate system. A rapid decline in Arctic sea ice over … recent decades has been documented using historical ship … charts and satellite images. However…
The Antarctic ice cap is a unique vantage point from which to … observe the global background of black carbon aerosol (BC). Far … removed from sources, BC in the Antarctic atmosphere is largely … due to biomass burning at low- to mid-latitudes modulated by … upper tropospheric…
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.
Firn core methanesulphonic acid (MSA) stratigraphy from Talos Dome (East … Antarctica) was compared with anomalies of the satellite-measured sea ice … extent (1973–1995) in the Ross Sea and Wilkes Land oceanic sector. In spite … of the sparseness of sea ice data…
Bursty bulk flows are understood to be the predominant flux transport mechanism in the … magnetotail.
A magnetic cloud in the solar wind impinged the Earths magnetosphere on the 7th January … 2005. Episodic enhancements in the coupling of solar wind energy initiated a familiar sequence … of Geospace events including a succession of substorms of increasing intensity throughout the … day.
The solar wind, magnetosphere, and ionosphere form a vast multi-scale system.
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)…
The correct identification of ionospheric echoes and 'ground' or 'sea' echoes is important to a … wide variety of studies using SuperDARN radar data. FITACF correctly distinguishes the … majority of ionospheric and ground echoes…
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…
The ground layer turbulence at Dome C is the cause for more than 90% of the total turbulence column. While the height … of this layer has been currently measured to be approximately 30m, no long term statistics is available from this part of … the atmosphere.
We highlight the operational challenges and planned solutions faced by an optical observatory taking advantage of the … superior astronomical observing potential of the Antarctic plateau. Unique operational aspects of an Antarctic optical … observatory arise from its remoteness…
Submillimetre astronomy is the prime technique to unveil the birth and early evolution of stars and galaxies in the local … and distant Universe.
PLATO, the ‘PLATeau Observatory’, is a robotic Antarctic observatory developed by UNSW for deployment to … Dome A, the highest point on the Antarctic plateau. PLATO is designed to run autonomously for up to a year, providing … power…