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A solar occultation sensor, the Improved Limb Atmospheric Spectrometer (ILAS)-II, measured 5890 vertical profiles of ozone concentrations in the stratosphere and lower … mesosphere and of other species from January to October 2003. The measurement latitude … coverage was 54–71°N and 64–88°S…
A survey of the size characteristics of the population of icebergs around the whole of the … Antarctic coastline was carried out using synthetic aperture radar images. A total of 36…
Snow accumulation rates at the summit of Law Dome are examined on three different … timescales. For the full record covering the last ~ 90,000 years accumulation rate is … determined as an output of the model used for ice core dating.
Four years of Rayleigh lidar and supporting radiosonde balloon data are used to study the … influence of wave activity on Polar Stratospheric Clouds (PSC) from an Eastern Antarctic … coastal site.
An 11 year climatology (1995-2005) of mesopause region temperatures over Davis station, Antarctica (68°S, 78°E) has been derived from hydroxyl rotational spectra measured using a … scanning spectrometer.
For over a century, atmospheric electricity data has been collected from all over the world, as well as from space. For the last thirty years, Antarctica has been the observatory site of … choice for atmospheric electricity studies.
The dominant generator of the atmospheric electric circuit is meteorological activity in the … form of thunderstorms and electrified clouds, while the flow of the current within the circuit is … principally controlled by atmospheric ionisation by cosmic rays.
The atmospheric tides are a dominant and persistent feature of the mesosphere and lowerthermosphere … region of the atmosphere which spans from 80 to 120km above the Earth’s … surface. The tides…
Polar Mesospheric Clouds (PMCs) and Polar Mesospheric Summer Echoes (PMSE) were … simultaneously observed during the 2005-2006 austral summer above Davis, Antarctica … (latitude 68.6°S). This is the first time such observations have been obtained from the … southern hemisphere.
During early August 2005, the size of the Antarctic ozone hole, as measured by the area … enclosing the 220 Dobson Unit contour of the total ozone column, grew more rapidly than … previously observed for that time of year. Using global ozone and meteorological data…
A mechanism where reconnection between the Solar Interplanetary Magnetic Field and the … Geomagnetic field, deposits energy in the polar atmosphere was first observed in Antarctica. The propagation and attenuation of plasma waves occurs in the polar ionospheric waveguide … at 300km altitude…
Considerable debate is ongoing as to whether there is a temperature difference between the … northern and southern hemisphere polar mesopause regions of the atmosphere. In part this … debate has been fuelled by the reported lack of southern hemisphere Polar Mesosphere … Summer Echoes (PMSE)…
This talk will describe the cosmic ray physics behind different cosmic ray muon telescopes, such as Hobart Scintillator Telescope, Nagoya Scintillator Telescope, Matsumoto and Mawson … Proportional Counter,MuSTAnG and SanMartinho ScintillatorTelescopes.
Ground Level Enhancements (GLEs) arise when protons are accelerated to relativistic energies … at the sun, invariably associated with X-class flares, and the protons propagate to Earth and … produce statistically significant increase in ground based cosmic ray detectors.
A review of the present Australian activity in SpaceWeather research and forecasting is presented … together with a summary of the Australian SpaceWeather Plan to 2010 and beyond. Australian … researchers are in the process of developing a decadal plan for all solar-terrestrial research…
It is well known that Geomagnetic Storms change the geomagnetic field configuration, thus … changing the local geomagnetic cut-off. The effect of such changes on cosmic ray induced … charged particle fluxes at aircraft altitudes is investigated.
Thermal infrared images of the cloud-free surface of the Antarctic ice sheet exhibit subtle … stream-like features that can be traced over hundreds of kilometres. The stream features are … superimposed on other features in the temperature field related to the surface topography of … the ice sheet.
We present results of modelling iceberg tracks around East Antarctica, using the observed … long-term tracks of massive icebergs as reference data.
The collapse of the Larsen A and B and other ice shelves fringing the Antarctic Peninsula … coastline raises questions about the status of ice shelves in other parts of the continent. Are … the large ice shelves along the East Antarctic coast also in danger of permanent collapse…