In 2017, there were more than 4,400 scientists undertaking research in Antarctica, a number that fell to just over 1,100 in the winter.[1] There are over 70 permanent and seasonal research stations on the continent; the largest, United States' McMurdo Station, is capable of housing more than 1,000 people.[221][222] The British Antarctic Survey has five major research stations on Antarctica, one of which is completely portable. The Belgian Princess Elisabeth station is one of the most modern stations and the first to be carbon-neutral.[223] Argentina, Australia, Chile, and Russia also he a large scientific presence on Antarctica.[1]
Geologists primarily study plate tectonics, meteorites, and the breakup of Gondwana. Glaciologists study the history and dynamics of floating ice, seasonal snow, glaciers, and ice sheets. Biologists, in addition to researching wildlife, are interested in how low temperatures and the presence of humans affect adaptation and survival strategies in organisms.[224] Biomedical scientists he made discoveries concerning the spreading of viruses and the body's response to extreme seasonal temperatures.[225]
The view of space from Earth is improved by a thinner atmosphere at higher elevations and a lack of water vapour in the atmosphere caused by freezing temperatures.[226] Astrophysicists at the Amundsen–Scott South Pole Station study cosmic microwe background radiation and neutrinos from space.[227]
The largest neutrino detector in the world, the IceCube Neutrino Observatory, is at the Amundsen-Scott Station. It consists of around 5,500 digital optical modules, some of which reach a depth of 2,450 m (8,040 ft), that are held in 1 km3 (0.24 cu mi) of ice.[228] Scientists also observed higher radiation dose rates around the coast of Antarctica compared with the global erage: this is attributed to cosmic rays going through the thinner atmosphere compared to equatorial latitudes.[229]
An Antarctic meteorite, Allan Hills 84001 on display at the Smithsonian Museum of Natural HistoryAntarctica provides a unique environment for the study of meteorites: the dry polar desert preserves them well, and meteorites older than a million years he been found. They are relatively easy to find, as the dark stone meteorites stand out in a landscape of ice and snow, and the flow of ice accumulates them in certain areas.[230]
The Adelie Land meteorite, discovered in 1912, was the first to be found. Meteorites contain clues about the composition of the Solar System and its early development.[231] Most meteorites come from asteroids, but a few meteorites found in Antarctica came from the Moon and Mars.[232][note 8]
Major scientific organizations in Antarctica he released strategy and action plans focused on advancing national interests and objectives in Antarctica, supporting cutting-edge research to understand the interactions between the Antarctic region and climate systems. The British Antarctic Survey (BAS) released a 10-year (2023–2033) strategy report to reduce greenhouse gas emissions and to focus on creating sustainable living on Earth.[234] Environmental sustainability is named as one of the top focus areas by the BAS strategy, highlighting the main challenge and priority to embed environmental sustainability into everything.[234]
In 2022, the Australian Antarctic Program (AAP) released a new Strategy and 20-year Action Plan (2022–2036) to modernize its Antarctic program. The global climate system was highlighted as one of the main priorities that will be supported and studied through the AAP Strategy Plan. It emphasizes the importance of understanding the vital role of Antarctica and the Southern Ocean in climate and weather to improve current knowledge and inform management responses.[235]
In 2021, the United States Antarctic Program (USAP) released a Midterm Assessment on the 2015 Strategic Vision for Antarctic and Southern Ocean Research, stressing the prominent role of the Southern Ocean in the global carbon cycle and sea level rise.[236] The USAP outlines the Changing Antarctic Ice Sheets Initiative as a top priority to enhance understanding of why ice sheets are changing now, and how they will change in the future.[236]
The Antarctic ice sheet's changing heightAntarctic ice sheets are a central focus of contemporary climate research due to urgent questions about their stability and reaction to global warming. Satellite technology enables researchers to study the ice sheets both through on-site fieldwork and remote sensing, facilitating detailed analyses of ice dynamics to predict future changes in a warming world.[citation needed]
The INStabilities & Thresholds in ANTarctica (INSTANT) Scientific Research Programme proposes three research themes, investigating the complex interactions between the atmosphere, ocean, and solid Earth in Antarctica. Its aims include improving the understanding and predictions of these processes to aid decision makers in risk assessment, management, and mitigation related to Antarctic climate change.[citation needed]
The Australian-led ICECAP project utilized advanced aerogeophysical techniques to map deep subglacial basins and channels that connect the ice sheet to the ocean.[237] This mapping improves predictions of ice sheet stability, the impacts of climate change on the ice sheets, and their potential contributions to global sea level rise.[237]