Australian Antarctica middle and upper atmospheric physics - A new direction

Details Australian Antarctica middle and upper atmospheric physics - A new direction Australian Antarctica middle and upper atmospheric physics - A new direction

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995adspr..16..151m&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 16, no. 5, p. (5)151-(5)162

Physics

2

Antarctic Regions, Atmospheric Density, Atmospheric Physics, Atmospheric Temperature, Australia, Earth Ionosphere, Ground Stations, Ionosondes, Middle Atmosphere, Remote Sensing, Wind (Meteorology), Aerosols, Annual Variations, Atmospheric Models, Climate Change, Diurnal Variations, Global Warming, Portable Equipment, Radar Measurement, Wind Velocity Measurement

Scientific paper

The distribution of Australian Antarctic stations (Lambda approximately 64.3 - 80.4 deg S) provides a unique platform for remote sensing the high-latitude middle and upper atmosphere. A recent national review on Antarctic science has resulted in new priorities for our Antarctic physics program, with future research focusing on science of practical value or of relevance to global change. This paper presents a brief overview of the scope of our Antarctic program, with emphasis on the recent deployment of a 'Digisonde Portable Sounder' (DPS-4) at Casey and 'Lidar' to be commissioned at Davis. Firstly, preliminary results from the DPS-4 will be presented showing the behavior of the polar cap ionosphere over Casey, including diurnal and seasonal effects. Differences were observed in seasonal convection patterns and the implications of such variations will be discussed in terms of convection models. Secondly, a high spectral resolution lidar system is under development for the detailed study of the middle and upper atmosphere above Davis. The lidar will routinely profile density, temperature, wind velocity and aerosol loading of the bulk atmosphere at high spatial and temporal resolution for the assessment of climate change and the study of dynamical processes.

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