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The role played by Southern Hemisphere sea-ice in global climate is explored using an … Earth system climate model of intermediate complexity.
A high-resolution, offline ocean general circulation model, incorporating a realistic parameterization of … mixed layer convection, is used to diagnose pathways and time scales of Southern Hemisphere intermediate, mode, and lower thermocline water ventilation.
The coupled ocean–atmosphere–ice response to variations in the Southern Annular Mode (SAM) is … examined in the National Center for Atmospheric Research (NCAR) Community Coupled Climate Model … (version 2).
A multi-directional telescope for detection of high-energy galactic cosmic rays (GCRs) - muons … was installed in 2001, through an international cooperation between Brazil, Japan and USA, and … operated since then at the Southern Space Observatory - SSO/CRS/INPE - MCT, (29S, 53W)…
Neutron monitors are integral detectors of secondary cosmic rays. Since each of them … has its own detection efficiency, energy spectra cannot readily be derived from their … observations. To circumvent this problem…
This paper presents results on modeling the ground-level response of the higher energy protons for the 2005 … January 20 ground-level enhancement (GLE). This event, known as GLE 69, produced the highest intensity of relativistic … solar particles since the famous event on 1956 February 23.
The Antarctic Biodiversity Database developed and hosted by the Australian Antarctic Data Centre (AADC), holds data and information on Antarctic and subantarctic flora and fauna in support of the SCAR Life Sciences programme Evolution and Biodiversity in the Antarctic (EBA).
Modelled 10Be production by solar cosmic ray (SCR) events is compared with measured 10Be concentrations … in a Law Dome snow pit record. The snow pit record spans 2.7 years, providing a quasi-monthly 10Be … sampling resolution which overlaps with the SCR events of 29 Oct 2003 and 20 Jan 2005.
The Australian Antarctic Program’s iceberg dataset (from ship-based observations), including information from the austral summer seasons 1984/85 to 1999/2000, is examined and used … to extend earlier studies. Using ‘snapshots’ of the iceberg population to provide an idea of the iceberg … life cycle…
Space weather impacts on some important modern technologies, particularly … those that depend on satellites. The La Trobe Space Physics Research Group studies the basic physical causes of space … weather phenomena in geospace, the interface between Earth and interplanetary space.
The dual HF radars comprising the Tasman International … Geophysical Environment Radar (TIGER) system … often observe localized high-velocity F-region plasma flows … (1500 m/s) in the midnight sector (20:00–02:00 MLT) at … magnetic latitudes as low as 3=60 S.
Studies of atmospheric composition in the Southern Ocean and Antarctic region continue to … reveal new findings which have a wide relevance. This presentation will show and interpret … records of the major greenhouse and related trace species from a network of measurement … sites across the region…
New measurements of atmospheric greenhouse gas … concentrations in ice from Law Dome, Antarctica reproduce … published Law Dome CO2 and CH4 records, extend them … back to 2000 years BP, and include N2O. They have very … high air age resolution, data density and measurement … precision.
Remote acoustic moorings can be used to investigate baleen whales at vastly different temporal and spatial scales. On one end of the spectrum…