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Antarctica and the Southern Ocean are key elements in the physical and biological Earth system. Human-induced climate change, and other human activities in the region, are leading to several potential interacting tipping points with major and irreversible consequences. Here…
The Antarctic Plateau offers many benefits to astronomers, including dark and … transparent infrared skies, long periods of uninterrupted observations, and very low levels … of atmospheric turbulence. Efforts to quantify these benefits are ongoing.
Polar Stratospheric Cloud (PSC) composition class information is extracted from the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) curtains for four Antarctic PSC seasons (2007 - 2010) and four Arctic PSC seasons (2006/07 - 2009/10). Orographic gravity wave (OGW)…
A compilation of sea salt data from East Antarctic ice cores are used to quantify the contribution of open ocean and sea ice to the sea salt budget. The ice cores used in this study are from Law Dome, Totten Glacier, Wilkes Land and Wilhelm II Land.
Coastal Antarctic sea salt aerosols are partitioned into two main sources, namely ocean sea spray and surface sea ice. The sea spray source is related to windiness over the surface ocean and the action of bubbles bursting.
It has recently been shown that sea ice (via frost flowers) is an important source of sea … salt to coastal Antarctica. This has been used to suggest that the sea salt record from … ice cores may reflect a proxy for sea ice extent around Antarctica. In this study…
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…
PILOT (the Pathfinder for an International Large Optical Telescope) is a proposed Australian/European optical/infrared … telescope for Dome C on the Antarctic Plateau, with target first light in 2012. The telescope is 2.4m diameter, with … overall focal ratio f/10, and a 1 degree field-of-view.
We do not yet understand why fuel spills can cause greater … damage in polar soils than in temperate soils. The role of water … in the freezing environment may partly be responsible for … why polar soils are more sensitive to pollution.
The Cryosphere and Climate Project (CliC) c~-ordinates climate activities related to all … parts of the earth's cryosphere. This includes sea ice, snow, ice shelves, ice bergs, lake ice, and permafrost. This talk will give a brief overview of the CliC project…
There are continuing efforts to refine our understanding of the association … between Polar Mesospheric Clouds (PMCs) and Polar Mesosphere Summer Echoes … (PMSEs).
Creative remediation schemes have been implemented with success at petroleum-contaminated sites … in Alaska and Canada during the past decade. Contaminated media have been landfarmed, amended with fertilizers, augmented with microbial products, and manipulated with engineered systems.
Conventionally the source of sea salt in the Antarctica was considered to be the ocean … surface. In simple terms, sea salt is ejected into the atmosphere as sea spray droplets, mixed … in the atmosphere, and transported to Antarctica via storm activity. Recently, however…
Mosses are the dominant plant species in continental Antarctica, where they sparsely colonize the limited stony … coastal areas not permanently covered with snow and ice. The few species of mosses present in Antarctica live ‘‘on the … edge’’ for plant life…
A summary of stratospheric measurements above Davis, Antarctica (68.6°S, 78.0°E) for the winter and spring of 2005 is presented. A rapid warming was observed in the … lower stratosphere during the third week of August.
Ice-free ground surfaces in the Australian Antarctic Territory are sensitive to damage by artificial disturbance.