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The zonal asymmetry in the Antarctic total ozone column (TOC) has been widely studied in … recent decades. However, little is known about how spatially dependent the TOC response is to sudden … stratospheric warmings (SSWs).
The Antarctic krill (Euphausia superbaDana, 1850) is an important trophic link between phytoplankton and higher trophic levels. Knowledge of the lipid biochemistry of krill assists in understanding their seasonal biology and predicting their responses to ecological changes.
We use Multi-Sensor Reanalysis and ground-based total ozone content (TOC) data to study total ozone variations in Antarctica near the dates of sudden stratospheric warmings (SSW). Three events were analyzed, including the warmings in 1988, 2002 (major warming), and 2019.
The first year of life is critical for large mammals to acquire foraging and predator avoidance skills. Southern elephant seal (Mirounga leonina) pups wean at approximately three weeks of age and depart on their first foraging trips in midsummer…
Fuel spills are a major source of contamination in terrestrial environments in Antarctica. Little is known of the effects of hydrocarbon contaminants in fuels on Antarctic terrestrial biota, and how these change as fuel ages within soil.
Background: Free ocean CO2 enrichment experiments (FOCE) were developed to address the need for information on community level response to ocean acidification in natural habitats. The antFOCE project was the first polar FOCE system and was run at Casey Station, East Antarctica…
The gammarid Paramoera walkeri is one of the most abundant amphipods in near-shore Antarctic waters. There has been increasing interest in P. walkeri as a test species for ecotoxicology studies and bio-monitoring for contaminants in Antarctica…
Fuel spills have occurred in Antarctic and sub-Antarctic regions, and comprehensive remediation strategies have recently been established to clean-up fuel spills at Australia’s Casey Station and Macquarie Island. However…
Special Antarctic Blend (SAB) is a light end diesel fuel, comprised mainly of petroleum hydrocarbons (alkanes nC9-C14, trace levels of nC15-23). It is used as the main source for power generation at Australia’s Research Stations in Antarctica and the subantarctic, including Macquarie Island.
Several fuel spills have occurred on subantarctic Macquarie Island (548300 S 1588570 E) associated with storing fuel and … generating power for the island’s research station. The Australian Antarctic Division began full-scale, on-site remediation of these sites … in 2009.
Arctic ecosystems and global climate are closely related. This paper studies the distributions and the coupling relationship between Chlorophyll a (Chl a) and aerosol optical thickness (AOD) in Greenland Sea (10 degrees W - 10 degrees E, 70 degrees N - 85 degrees N)…
Simultaneous effects of ocean acidification and temperature change in Antarctic environments warrant investigation as little is known about the synergistic consequences of these factors on Antarctic benthic species.
Effects of ocean acidification in conjunction with temperature change warrants investigation as little is known about potential interactive effects of these parameters on Antarctic benthic species.
resulted in devastating bushfires igniting in south-eastern Australia. As a result, a significant amount of smoke aerosols was injected into the upper troposphere-lower stratosphere (UTLS) region. Its properties, in particular H2O enhancement inside the smoke plume…
As revealed by the CALIPSO orbiting lidar, the intense firestorms that occurred … in southern Australia during February 2009 injected a significant plume of … smoke particles into the lower stratosphere. Over the following weeks…
Temperature data from the COSMIC GPS-RO … satellite constellation are used to study the distribution and … variability of planetary wave activity in the low to midstratosphere … (15–40 km) of the Arctic and Antarctic from … September 2006 until March 2009.
Recent model calculations have attempted to quantify the contribution of … major energetic solar cosmic ray (SCR) events to 10Be production.1,2 In this … study we compare modeled 10Be production by SCR events to measured … 10Be concentrations in a Law Dome snow pit record.
The ICECAP project represents a return to the long-range, internationally collaborative … Antarctic aerogeophysics last seen in the 1970’s SPRI/NSF/TUD project. ICECAP is a joint … IPY collaboration between the University of Texas at Austin (funded by NSF), the University of … Edinburgh…
Polar stratospheric gravity wave activity is studied using data from the Constellation … Observing System for Meteorology, Ionosphere and Climate (COSMIC) Global … Positioning System Radio Occultation (GPS-RO). Waves with vertical wavelengths of … 2 to 15 km are considered.
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.
Repeated exposure to human activity can change the behavioural response of wildlife, having … implications for management.Weddell seals (Leptonychotes weddellii) breeding close to Antarctic research … stations are easily accessible and regularly visited by people.
Clean sediment collected from O’Brien Bay, East Antarctica, was artificially contaminated with a mix of Special Antarctic Blend diesel fuel and lubricating oil and deployed in two uncontaminated locations (O’Brien and Sparkes Bays) and a previously contaminated bay (Brown Bay)…
The eVect of diVerent light regimes on the … development of sexual maturity and body composition … (carbon, nitrogen, lipid and protein) of Antarctic krill, Euphausia … superba, was studied over 12 weeks under laboratory … conditions.
[1] The relationship between the production of dimethylsulfide (DMS) in the upper … ocean and atmospheric sulfate aerosols has been confirmed through local shipboard … measurements, and global modeling studies alike.
The effect of different light regimes on physiological parameters (feeding activity, oxygen consumption, and … activity of the metabolic enzyme malate dehydrogenase [MDH]) of Antarctic krill, Euphausia superba, was studied … over 12 weeks under laboratory conditions.