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The behaviour of geochemical tracers during differentiation of the Earth. This project is aimed at providing fundamental data which Earth Scientists will use to understand the processes by which the Earth separated into its chemically-distinct layers (core, mantle, crust, atmosphere, oceans) and to determine the nature of the continuing interactions between the surface environment in which we live and the deep interior. It will provide training in modern high temperature-high pressure materials- ....The behaviour of geochemical tracers during differentiation of the Earth. This project is aimed at providing fundamental data which Earth Scientists will use to understand the processes by which the Earth separated into its chemically-distinct layers (core, mantle, crust, atmosphere, oceans) and to determine the nature of the continuing interactions between the surface environment in which we live and the deep interior. It will provide training in modern high temperature-high pressure materials-science techniques for Ph.D. students and postdoctoral researchers. This will provide Australia with Earth Scientists who have both traditional skills and the ability to work with Materials Scientists on the synthesis of novel materials under extreme conditions.Read moreRead less
Origin and Evolution of the Earth's Chemical Reservoirs. The scientific aims of this project are to understand the processes by which the Earth separated into its chemically-distinct layers (core, mantle, crust, atmosphere, oceans) and to determine the nature of the continuing interactions between the surface environment in which we live and the deep interior. Experimental study of these processes will involve establishment of a world-class facility for materials synthesis at high pressures and ....Origin and Evolution of the Earth's Chemical Reservoirs. The scientific aims of this project are to understand the processes by which the Earth separated into its chemically-distinct layers (core, mantle, crust, atmosphere, oceans) and to determine the nature of the continuing interactions between the surface environment in which we live and the deep interior. Experimental study of these processes will involve establishment of a world-class facility for materials synthesis at high pressures and temperatures. This facility will provide the means to simulate the processes occurring within the Earth and will enable synthesis of new high density materials of technological interest.Read moreRead less
Chemistry of the Archaean Ocean and its Impact on Earth's Early Atmosphere and Ecosystems. The Pilbara Craton (WA) contains some of the oldest and best preserved Archaean rocks and microfossils in the world. These rocks, which were recently drilled as part of a collaborative effort between France and Australia, present an unprecedented opportunity to study the composition of the Earth's early atmosphere, ocean and life. The research will strengthen Australia's strategic links with international ....Chemistry of the Archaean Ocean and its Impact on Earth's Early Atmosphere and Ecosystems. The Pilbara Craton (WA) contains some of the oldest and best preserved Archaean rocks and microfossils in the world. These rocks, which were recently drilled as part of a collaborative effort between France and Australia, present an unprecedented opportunity to study the composition of the Earth's early atmosphere, ocean and life. The research will strengthen Australia's strategic links with international experts and will provide access to the state-of-the-art synchrotron facility in France. The project links fundamental processes that shaped the Earth and thus fits into National Research Priority 1: An Environmentally Sustainable Australia.Read moreRead less
Testing the hypothesis of synchronous inter-hemispheric climatic change during the Last Termination (20,000-10,000 years ago). The results generated in this project will provide a greater understanding of the sensitivity of the Australasian region to a range of different climatic conditions (far beyond that recorded in historical datasets). Focussing on climate at the end of the last ice age (20,000-10,000 years ago) we will investigate the timing, rate and magnitude of change in the Australasi ....Testing the hypothesis of synchronous inter-hemispheric climatic change during the Last Termination (20,000-10,000 years ago). The results generated in this project will provide a greater understanding of the sensitivity of the Australasian region to a range of different climatic conditions (far beyond that recorded in historical datasets). Focussing on climate at the end of the last ice age (20,000-10,000 years ago) we will investigate the timing, rate and magnitude of change in the Australasian region and test whether the variability was in phase with other records from the mid- and high-latitudes of the Southern and Northern Hemisphere. The results will provide a considerably improved context for understanding present and future climate change in Australia. Read moreRead less
Simulating the evolution of the Southern Ocean and Australia's Palaeo-environment over 40 million years. Our project falls in the first national research priority: an environmentally sustainable Australia and meets two of its primary goals, understanding environmental change and the evolution of biodiversity, and responding to climate change and variability. Our models will represent a major step forward in differentiating between natural processes and anthropological input to present global cli ....Simulating the evolution of the Southern Ocean and Australia's Palaeo-environment over 40 million years. Our project falls in the first national research priority: an environmentally sustainable Australia and meets two of its primary goals, understanding environmental change and the evolution of biodiversity, and responding to climate change and variability. Our models will represent a major step forward in differentiating between natural processes and anthropological input to present global climate change and will address quantitatively how Australia changed from a continent rich in freshwater to the driest inhabited continent throughout the last 40 million years.Read moreRead less
Stochastic methods in mathematical geophysical fluid dynamics. We will develop analytical and numerical methods for long-term weather forecasting and climate modelling. The project deals with the mathematical aspects and fundamental mechanisms underpinning numerical
climate forecasting. We will develop new methodology for accurate modelling of the important and dominant slow global processes without explicitly resolving the precise detail of the weather of each day at all scales. Using sophisti ....Stochastic methods in mathematical geophysical fluid dynamics. We will develop analytical and numerical methods for long-term weather forecasting and climate modelling. The project deals with the mathematical aspects and fundamental mechanisms underpinning numerical
climate forecasting. We will develop new methodology for accurate modelling of the important and dominant slow global processes without explicitly resolving the precise detail of the weather of each day at all scales. Using sophisticated mathematics, this project investigates how to parameterize the fast and small processes by using stochastic processes in a controllable and adaptive way.Read moreRead less
Western Australia severe weather prediction: optimising forecasts using new data sources and improved high-resolution models. WA suffers unusually high exposure to severe tropical and extra-tropical weather, from its size and geographical location. This project will develop enhanced data assimilation and modelling techniques, using emerging high-resolution satellite and other data to improve the timeliness, accuracy and reliability of weather forecasts for WA. Outcomes include: improved forecas ....Western Australia severe weather prediction: optimising forecasts using new data sources and improved high-resolution models. WA suffers unusually high exposure to severe tropical and extra-tropical weather, from its size and geographical location. This project will develop enhanced data assimilation and modelling techniques, using emerging high-resolution satellite and other data to improve the timeliness, accuracy and reliability of weather forecasts for WA. Outcomes include: improved forecast systems for predicting severe weather affecting WA (and consequently Australia), and ensemble forecast systems that provide valuable probabilistic information, such as confidence limits in the forecasts. Better forecasts issued earlier for severe weather events will allow appropriate planning and management measures, thereby reducing their present high social and economic cost.Read moreRead less
Tectonic versus biological processes: What controls the long-term global carbon cycle? A major debate in Earth system analysis concerns two competing hypotheses on the driving forces behind dramatic changes in atmospheric CO2 over geological time. One hypothesis considers tectonic/geological processes to be the major driving force. The other argues that it is the competition between plants and animals that drives the long-term CO2 cycle. We propose to test these hypotheses using a novel set of g ....Tectonic versus biological processes: What controls the long-term global carbon cycle? A major debate in Earth system analysis concerns two competing hypotheses on the driving forces behind dramatic changes in atmospheric CO2 over geological time. One hypothesis considers tectonic/geological processes to be the major driving force. The other argues that it is the competition between plants and animals that drives the long-term CO2 cycle. We propose to test these hypotheses using a novel set of global oceanic palaeo-age grids and subduction models for the last 180 million years. This will allow us to appraise key tectonic carbon cycle components such as mantle degassing, seafloor weathering and sediment subduction.Read moreRead less
Stochastic Methods in Mathematical Geophysical Fluid Dynamics. The project will develop analytical and numerical methods for long-term weather forecasting and climate modelling. The project deals with the mathematical aspects and fundamental mechanisms underpinning numerical climate forecasting. The project will develop new methodology for accurate modelling of the important and dominant slow global processes without explicitly resolving the precise detail of the weather of each day at all scale ....Stochastic Methods in Mathematical Geophysical Fluid Dynamics. The project will develop analytical and numerical methods for long-term weather forecasting and climate modelling. The project deals with the mathematical aspects and fundamental mechanisms underpinning numerical climate forecasting. The project will develop new methodology for accurate modelling of the important and dominant slow global processes without explicitly resolving the precise detail of the weather of each day at all scales. Using sophisticated mathematics, this project investigates how to parameterize the fast and small processes by using stochastic processes in a controllable and adaptive way.Read moreRead less
Resolving Critical Knowledge Gaps Relating to Light and Free-Radical Mediated Transformations of Iron and Copper in Oxic Natural Waters. Understanding the transformation kinetics of iron and copper species is critical to maintaining Australia's water resources since i) iron transformations are key to generation and transport of acid in Australia's coastal environment; ii) growth of toxic algae are stimulated by dissolution of iron-rich sediments with subsequent release of nutrients phosphorus an ....Resolving Critical Knowledge Gaps Relating to Light and Free-Radical Mediated Transformations of Iron and Copper in Oxic Natural Waters. Understanding the transformation kinetics of iron and copper species is critical to maintaining Australia's water resources since i) iron transformations are key to generation and transport of acid in Australia's coastal environment; ii) growth of toxic algae are stimulated by dissolution of iron-rich sediments with subsequent release of nutrients phosphorus and iron, and iii) algal toxicity is related to iron and copper nutrition and interplay of these metals with oxygen. Additionally, global cycles of carbon, phosphorus and nitrogen are influenced by iron and copper interactions with light and oxygen. Improved understanding of these processes should lead to an awareness of how to prevent these problems and, if they occur, approaches to their mitigation.Read moreRead less