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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…
Amphipods play an important role in Southern Ocean trophic chains. Considering the key role of Pacific Ocean and sea ice ecosystems in the Earth system and the growing impact of global environmental change, it is important to collect information on the status of marine amphipod biodiversity.
Seven passive acoustic surveys for marine mammal sounds were conducted by deploying sonobuoys along ship tracks during Antarctic voyages spanning years 2006-2021. These surveys included nearly 330° of longitude throughout Antarctic (south of 60°S) and sub-Antarctic (between 50-60°S) latitudes. Here…
Supporting Antarctic scientific investigation is the job of the national Antarctic programmes, the government entities charged with delivering their countries’ Antarctic research strategies. This requires sustained investment in people, innovative technologies, Antarctic infrastructures…
Future changes in the boreal polar vortex under a climate change scenario are still a matter of debate in the scientific community. For example, there is a lack of consensus among models about possible future changes in the frequency of major stratospheric warmings.
The sub-Antarctic region between 45-60°S is primarily ocean. However, there are a few small isolated islands, most of which are currently facing the combined pressures of climate change and introduced species.
The sub-Antarctic region between 45-60 °S is primarily ocean. However, there are a few small isolated islands, most of which are currently facing the combined pressures of climate change and introduced species.
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)…
Circumpolar Deep Water (CDW) is the most extensive water mass in the Australian Circumpolar Current (ACC). Upper CDW (UCDW) is studied here over the period 1958-2005 using Simple Ocean Data Assimilation (SODA) reanalysis data.
This study was the first to use high-resolution IKONOS imagery to classify vegetation communities on … sub-Antarctic Heard Island. We focused on the use of texture measures, in addition to standard … multispectral information, to improve the classification of sub-Antarctic vegetation communities.
The Network for the Detection of Mesopause Change (NDMC) is a global program with the mission to promote international cooperation among research groups investigating the mesopause region (80-100 km) with the goal of early identification of changing climate signals.
This short paper describes 3 consistent regional differences in fin whale vocalizations recorded in the Southern … Ocean. Long term recordings were analysed from locations in eastern and western Australia, and locations south of … these in the Antarctic.
Preliminary results are presented from the first validation of geophysical data products (ice concentration, snow thickness on sea ice (hs) and ice temperature (TI ) from the NASA EOS Aqua AMSRE sensor, in East Antarctica (in September–October 2003).
Accurate measurement of fundamental parameters, such as temperature, density and composition, through the whole atmosphere and over long time scales is vitally important to identify and quantify changes in the earths climate, whether natural or anthropogenic.
Mitochondrial ribosomal DNA is commonly used in DNA-based dietary … analyses. In such studies, these sequences are generally assumed to be the … only version present in DNA of the organism of interest. However…
Knowledge of penguin abundance at regional and circumpolar scales across the Southern Ocean is important … for the development of ecosystem models and to estimate prey consumption by penguins to assess potential competition … with fisheries’ operations.
Adding carbon dioxide (CO2) to the ocean alters the carbonate chemistry and lowers pH, making surface waters more acidic and decreasing the carbonate ions available to calcifiers for calcite and aragonite production.
From a synthesis of recent oceanic observations and paleo-data it is evident that certain species … of giant diatoms including Rhizosolenia spp. Thalassiothrix spp. and Ethmodiscus rex may … become concentrated at oceanic frontal zones and subsequently form episodes of mass flux to the … sediment.
Identification of DNA sequence diversity is a powerful means for assessing the … species present in environmental samples.
The operating principle of atmospheric Rayleigh LIDAR (light … detection and ranging) systems is that the range-corrected return backscatter … signal is directly related to atmospheric density.
Antarctic coastal polynyas are major areas of intense ocean–atmosphere heat and moisture … flux, and associated high sea-ice production and dense-water formation. Their accurate detection, including an estimate of thin ice thickness, is therefore very important. In this paper…
Although satellite passive-microwave remote sensing is the main source of global sea-ice … information, the data products have never been adequately validated for East Antarctic … conditions.
Long-range forecasts of Antarctic sea ice are tery much in demand, not only because of … the potential importance of sea ice in global climate, but also for the practical purpose of … exploring the Antarctic continent. Unfortunately…
AB: Spectral calibrations, airglow and possibly auroral contaminations, solar and telluric absorption features and the selection of transition probabilities can all influence rotational temperatures derived from measurements of hydroxyl airglow intensities.