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The development of the Antarctic ozone hole in late winter and spring (September–November) is the most … noticeable phenomenon in the polar stratosphere. It has appeared every season since the early 1980s within the … stratospheric polar vortex…
The Antarctic environment is extremely cold, windy and dry. Ozone depletion has resulted in increasing ultraviolet-B radiation, and increasing greenhouse gases and decreasing stratospheric ozone have altered Antarctica's climate.
The Antarctic coastal marine region is a unique and highly complex environment, of which landfast ice and polynyas are key features, especially in the context of dense water formation. Current large-scale ocean-sea ice models used in climate studies simulate hardly any Antarctic landfast ice…
The Totten Glacier in East Antarctica, with an ice volume equivalent to >3.5?m of global sea-level rise, is grounded below sea level and, therefore, vulnerable to ocean forcing. Here…
Non-photochemical quenching (NPQ) within phytoplankton cells often causes the daytime suppression of chlorophyll fluorescence in the Southern Ocean.
Investigating ecological relationships between predators and their environment is essential to understand the response of marine ecosystems to climate variability and change. This is particularly true in polar regions, where sea ice (a sensitive climate variable)…
Snow on Antarctic sea ice plays a complex and highly variable role in air-sea-ice interaction processes and the Earth's climate system. Using data collected mostly during the past 10 years, this paper reviews the following topics:
The Australian Antarctic Division (AAD)1 is undertaking planning activities for a proposal to construct and operate a new aerodrome near Davis research station in the Vestfold Hills, East Antarctica (the Davis Aerodrome Project). The Davis Aerodrome Project would involve the construction of a 2.
The Australian Antarctic Strategy and 20 Year Action Plan: Update 2022 reaffirms Australia's ongoing commitment to best practice environmental stewardship in Antarctica. Related high priority actions over the next five years include establishing a Cleaner Antarctica science program…
Increasing levels of chemical contamination in the Antarctica environment are resulting from global and regional human activities. Unlike other areas of the world, Antarctica lacks continent-wide systematic and coordinated monitoring of contaminants. Germany, Italy, Australia, United Kingdom…
Australian researchers are undertaking work to inform ongoing discussions in the Committee for Environmental Protection (CEP) on further developing the Antarctic protected area system.
The Australian Antarctic Division is undertaking research to develop remediation techniques and low cost technologies to allow Australia to clean-up Antarctic and subantarctic contaminated sites in a timely and cost effective manner.
Protection of the wilderness and aesthetic values of Antarctica is mandated by the Protocol on Environmental Protection to the Antarctic Treaty, the “Madrid Protocol,” which came into force in 1998. Despite the passage of over 13 years…
We evaluate atmospheric ionization during the Ground Level Enhancement (GLE) of 2005 Jan 20 using the continuous slowing down (CSD) energy loss approximation [1,2]. The top-of-atmosphere particle flux is derived using satellite measurements (for particle energies below 500MeV)…
We evaluate atmospheric ionization during the Ground Level Enhancement (GLE) of 2005 Jan 20 using two methods: a Monte-Carlo (MC) air-shower simulation [1] and a continuous slowing down (CSD) energy loss approximation [2,3]. For both methods…
The Antarctic climate system varies on timescales from orbital, through millennial to sub-annual, and is closely coupled to other parts of the global climate system.
A climatological mean distribution for the surface water pCO2 over the global oceans in non-El Niño conditions has been constructed with spatial resolution of 4° (latitude) ×5° (longitude)…
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…
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…