Coupling tropical cyclone and climate physics with ocean waves. It is argued that without accounting for the wave effects directly, the physics of large-scale air-sea interactions is inaccurate and incomplete. The project will introduce explicit coupling of large-scale atmospheric and oceanic phenomena with the physics of surface waves which should lead to improved predictions of tropical cyclones and climate.
Unsaturation of vapour pressure inside leaves: fundamental, but unknown. This project aims to determine when and to what extent the air inside leaves becomes unsaturated with water vapour. All current interpretation and modelling of leaf gas exchange assumes saturation under all circumstances. Compelling evidence has been obtained that suggests this is not true under moderate air vapour pressure deficits. A novel technique will be employed to assess the water vapour concentration of the air insi ....Unsaturation of vapour pressure inside leaves: fundamental, but unknown. This project aims to determine when and to what extent the air inside leaves becomes unsaturated with water vapour. All current interpretation and modelling of leaf gas exchange assumes saturation under all circumstances. Compelling evidence has been obtained that suggests this is not true under moderate air vapour pressure deficits. A novel technique will be employed to assess the water vapour concentration of the air inside leaves based on stable isotope analysis of carbon dioxide and water vapour exchanged between leaves and air. The project is expected to provide fundamental knowledge about how stomata regulate photosynthesis and water use, with significant implications for modelling vegetation function and for improving the performance of crop plants.Read moreRead less
Nonlinear Econometric Modelling: A Complex Systems Perspective. It is becoming increasingly accepted that economic systems are both complex and adaptive. However, this introduces a range of problems in constructing, estimating and testing economic models using time series data. In this project, this problem will be addressed through the formulation and implementation of a new methodology and associated techniques. These techniques will allow a researcher to use information obtained from a set o ....Nonlinear Econometric Modelling: A Complex Systems Perspective. It is becoming increasingly accepted that economic systems are both complex and adaptive. However, this introduces a range of problems in constructing, estimating and testing economic models using time series data. In this project, this problem will be addressed through the formulation and implementation of a new methodology and associated techniques. These techniques will allow a researcher to use information obtained from a set of nonlinearity tests to determine which type of nonlinear model provides the best representation of a data generating mechanism. Selected high frequency financial and macroeconomic data (for the US and Australia) will be used in the study. This research is intended to change the direction and emphasis of econometric modelling and promises to have a fundamental impact on forecasting and policy evaluation methods.
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Development of an immunology toolbox to combat emerging marsupial diseases. Disease is increasingly a driver of wildlife population declines in Australia. However, basic immunology tools for >99% of vertebrate species are scarce, limiting our ability to prevent and respond to emerging and endemic diseases, such as devil facial tumour disease and wobbly possum disease. The overarching goal of this project is to improve wildlife health and fill the marsupial immunology gap by developing a long-ove ....Development of an immunology toolbox to combat emerging marsupial diseases. Disease is increasingly a driver of wildlife population declines in Australia. However, basic immunology tools for >99% of vertebrate species are scarce, limiting our ability to prevent and respond to emerging and endemic diseases, such as devil facial tumour disease and wobbly possum disease. The overarching goal of this project is to improve wildlife health and fill the marsupial immunology gap by developing a long-overdue multispecies marsupial immunology toolbox. The toolbox is needed to accelerate devil facial tumour disease vaccine progress and conservation immunology research. It will expand our knowledge of wobbly possum disease virus that is increasingly reported in Tasmania and the risk posed by the virus to other possum species.Read moreRead less
State-contingent analysis of productivity, efficiency and innovation. Productivity growth is a fundamental precondition for sustainable improvements in living standards. The main drivers of productivity growth are technological innovation and improvements in the efficiency of resource use. Effective public policy in this area requires identification of these components. This project develops improved productivity measurement methods that are applicable in economic environments characterised b ....State-contingent analysis of productivity, efficiency and innovation. Productivity growth is a fundamental precondition for sustainable improvements in living standards. The main drivers of productivity growth are technological innovation and improvements in the efficiency of resource use. Effective public policy in this area requires identification of these components. This project develops improved productivity measurement methods that are applicable in economic environments characterised by production and/or demand uncertainty. The methods will be used to obtain improved estimates of rates of innovation and changes in the relative efficiency of selected Australian enterprises. The empirical results will inform National Competition Policy and the process of microeconomic reform.Read moreRead less
Towards a climate theory of tropical cyclone formation. In Earth's current climate, about 80 to 90 tropical cyclones form every year around the globe, but the reasons why cyclones form at this rate are unknown. This project will use a combination of theoretical techniques and numerical simulation to elucidate the links between large-scale climate and the rate of tropical cyclone formation. A series of climate model experiments will be performed that also have the potential to improve confidence ....Towards a climate theory of tropical cyclone formation. In Earth's current climate, about 80 to 90 tropical cyclones form every year around the globe, but the reasons why cyclones form at this rate are unknown. This project will use a combination of theoretical techniques and numerical simulation to elucidate the links between large-scale climate and the rate of tropical cyclone formation. A series of climate model experiments will be performed that also have the potential to improve confidence in our predictions of tropical cyclone incidence in a future, changed climate.Read moreRead less
Closing the Gap Between Theory and Data in Macroeconometrics. This project aims to bring econometric models (the empirical vehicle for inference) and economic models (the theory) closer together. A new model is intended to be proposed that will address a significant issue with the interpretation of the outputs of the econometric models. As a first contribution, the project is expected to develop the model and an inferential framework for this model using probability theory on manifolds. In a sec ....Closing the Gap Between Theory and Data in Macroeconometrics. This project aims to bring econometric models (the empirical vehicle for inference) and economic models (the theory) closer together. A new model is intended to be proposed that will address a significant issue with the interpretation of the outputs of the econometric models. As a first contribution, the project is expected to develop the model and an inferential framework for this model using probability theory on manifolds. In a second contribution, it is expected to construct an algorithm to permit inference leading to outputs useful to policy analysts. The model is intended to be parsimonious, which facilitates the development of a time-varying version to allow the model to evolve with the economy and provide better policy guidance.Read moreRead less
Resilience of eucalypts to future droughts. This project aims to examine how resilient Eucalyptus species are to future droughts by combining data synthesis, manipulative experiments and modelling. Climate change is expected to increase the frequency, magnitude and duration of future droughts, with major environmental and socio-economic consequences for Australia. Current predictive capacity is extremely limited: experiments are limited in scale and cannot capture important global change interac ....Resilience of eucalypts to future droughts. This project aims to examine how resilient Eucalyptus species are to future droughts by combining data synthesis, manipulative experiments and modelling. Climate change is expected to increase the frequency, magnitude and duration of future droughts, with major environmental and socio-economic consequences for Australia. Current predictive capacity is extremely limited: experiments are limited in scale and cannot capture important global change interactions, whilst models do not represent the functional characteristics and adaptions of eucalypts. This project will develop a strong evidence- and process-based understanding to quantify the functional behaviour of drought-adapted Eucalyptus species and leverage this insight to make future model projections.Read moreRead less
Computing probabilities of theories where these probabilities vary over time with applications in macroeconomics. This project will present a method to produce empirically based policy advice that accounts for the changing economic environment and that allows for a range of assumptions about how the economy works. The research and training will place Australia at the forefront of empirical macroeconomic research and strengthen international research networks. Policy making will be improved as: i ....Computing probabilities of theories where these probabilities vary over time with applications in macroeconomics. This project will present a method to produce empirically based policy advice that accounts for the changing economic environment and that allows for a range of assumptions about how the economy works. The research and training will place Australia at the forefront of empirical macroeconomic research and strengthen international research networks. Policy making will be improved as: it will use information that is more robust to false assumptions; it will quickly incorporate new information; and we will understand better why certain policies did or did not work at different times in the past. The research will impact upon other sciences such as physics and engineering that use the same underlying tools far more than do economists.Read moreRead less
Southern Ocean aerosols: sources, sinks and impact on cloud properties. This project aims to provide fundamental process-level understanding of atmospheric aerosol processes over the Southern Ocean, a region that has a profound influence on the Australian and global climate and where climate models perform poorly. Comprehensive observations during 3 Southern Ocean voyages and land-based measurements will enhance our knowledge of aerosols and cloud formation in that region and provide much-needed ....Southern Ocean aerosols: sources, sinks and impact on cloud properties. This project aims to provide fundamental process-level understanding of atmospheric aerosol processes over the Southern Ocean, a region that has a profound influence on the Australian and global climate and where climate models perform poorly. Comprehensive observations during 3 Southern Ocean voyages and land-based measurements will enhance our knowledge of aerosols and cloud formation in that region and provide much-needed data for improving global climate models. Expected outcomes include more accurate seasonal and latitudinal representations of Southern Ocean aerosol populations, properties and sources. The main benefit includes improvements in weather forecasting and future climate projection for Australia and the Southern Hemisphere.Read moreRead less