Past to future changes in ocean dynamics and biogeochemistry. This project aims to understand the impact of changes in ocean circulation on marine biogeochemistry, climate and ultimately the Antarctic ice-sheet by combining transient simulations of the last glacial cycle performed with an Earth system model incorporating the compilation of paleoproxy records. The oceanic circulation has varied over the last glacial cycle (~140,000 years) and is expected to change over the coming centuries due t ....Past to future changes in ocean dynamics and biogeochemistry. This project aims to understand the impact of changes in ocean circulation on marine biogeochemistry, climate and ultimately the Antarctic ice-sheet by combining transient simulations of the last glacial cycle performed with an Earth system model incorporating the compilation of paleoproxy records. The oceanic circulation has varied over the last glacial cycle (~140,000 years) and is expected to change over the coming centuries due to rising atmospheric carbon dioxide. The project will measure future changes in oceanic circulation on ocean acidification and oxygen content with a state-of-the-art high-resolution ocean carbon cycle model. This will lead to improved understanding of processes and feedbacks within the Earth system.Read moreRead less
The Southern Ocean's response to abrupt climate change. This project aims to determine how the Southern Ocean responds to abrupt climate change, through geochemical analysis of marine sediment cores. Rapid warming events of the last ice age provide an analogue to human-caused warming. Experiments using ocean climate models will evaluate the drivers and consequences of the biogeochemical response of different sectors and zones of the Southern Ocean. The intended outcome is a better understanding ....The Southern Ocean's response to abrupt climate change. This project aims to determine how the Southern Ocean responds to abrupt climate change, through geochemical analysis of marine sediment cores. Rapid warming events of the last ice age provide an analogue to human-caused warming. Experiments using ocean climate models will evaluate the drivers and consequences of the biogeochemical response of different sectors and zones of the Southern Ocean. The intended outcome is a better understanding of how and why climate change impacts ocean productivity in the ecologically significant Southern Ocean. This will lead to better representations of carbon feedbacks in climate models and more robust projections of future climate change.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE150100107
Funder
Australian Research Council
Funding Amount
$369,536.00
Summary
What is the impact of abrupt climate change on the global carbon cycle? In the past 50 000 years there were several episodes of abrupt climate change during which atmospheric carbon dioxide rose significantly. This project aims to determine the causes of past abrupt changes in atmospheric carbon dioxide. The project is significant because understanding changes in the global carbon cycle is essential to estimate future climate trajectories. Innovatively, it will highlight the relationship between ....What is the impact of abrupt climate change on the global carbon cycle? In the past 50 000 years there were several episodes of abrupt climate change during which atmospheric carbon dioxide rose significantly. This project aims to determine the causes of past abrupt changes in atmospheric carbon dioxide. The project is significant because understanding changes in the global carbon cycle is essential to estimate future climate trajectories. Innovatively, it will highlight the relationship between Southern Hemisphere water masses and the marine carbon cycle during abrupt climate change. The expected outcomes include a better understanding of the interplay between Southern Ocean processes and the carbon cycle.Read moreRead less