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The Southern Ocean is one the most significant regions on earth for regulating the build up of anthropogenic CO2 in the atmosphere, and the capacity for carbon uptake in the region could be altered by climate change. The project aims to establish a time series of anthropogenic carbon accumulation.
Iron is a major factor controlling phytoplankton growth in the Southern Ocean, yet our knowledge of iron in Southern Ocean waters is hindered by our inability to collect uncontaminated seawater from ships.
This project will develop a method to monitor human impacts in the shallow marine environment of Antarctica.
Petroleum contamination poses a major threat to Antarctic ecosystems because petroleum products are persistent and potentially toxic in the environment. Natural attenuation of most fuels and oils that are commonly used in Antarctica is very slow in the terrestrial environment (decades or longer).
This project will use computer-based modelling and existing field data to analyse the production and cycling of dimethylsulphide (DMS) and predict its role in climate regulation in the Antarctic Southern Ocean.
Ice core drilling is used to extract information from glacial ice, which aids in the reconstruction of past climatic conditions, and produces proxy records of environmental parameters.
Antarctic lake cores record a history of precipitation in the preservation of climate sensitive microbial communities.