Precipitation Events over Tasmania and their Response to Weather Modification. The ongoing cloud-seeding work undertaken by Hydro Tasmania will be investigated through a combination of fieldwork and numerical simulations. New instrumentation and advanced numerical models will allow this research to provide a new understanding of the precipitation events over Tasmania and their response to cloud seeding. This research will also explore the interaction between the background aerosol/pollution leve ....Precipitation Events over Tasmania and their Response to Weather Modification. The ongoing cloud-seeding work undertaken by Hydro Tasmania will be investigated through a combination of fieldwork and numerical simulations. New instrumentation and advanced numerical models will allow this research to provide a new understanding of the precipitation events over Tasmania and their response to cloud seeding. This research will also explore the interaction between the background aerosol/pollution level and the precipitation. Given the relatively pure nature of the air over Tasmania, this research will be of international interest. This research will also be of direct interest to Hydro Tasmania as insight gained into the precipitation events will allow us to optimise their cloud-seeding operation.Read moreRead less
Radar Studies of Rainfall with Applications to Forecasting. Weather watch radars are used to predict severe weather events, with echo strengths depending on the number of rain drops in the beam. With suitable calibration the echo intensities can be used to predict rainfall rates. In 2005 the Bureau of Meteorology will establish a new weather radar near Adelaide. We will compare rainfall estimates made with the new radar with results from a VHF profiler that accurately measures rain drop distribu ....Radar Studies of Rainfall with Applications to Forecasting. Weather watch radars are used to predict severe weather events, with echo strengths depending on the number of rain drops in the beam. With suitable calibration the echo intensities can be used to predict rainfall rates. In 2005 the Bureau of Meteorology will establish a new weather radar near Adelaide. We will compare rainfall estimates made with the new radar with results from a VHF profiler that accurately measures rain drop distributions and rainfall. The aim is to test the weather radar estimates of rainfall rates and their uncertainties. Outcomes will have applications in flood forecasting and hydrology.Read moreRead less
Predicting pollutant dispersion within the CBD. The accidental or pre-meditated release of hazardous gases and aerosols within an urban environment are potentially threatening to human life and safety. Emergency responders require adequate information to quickly address these concerns yet the lack of detailed observations and the complex nature of the dispersion make this task difficult. This project will collect detailed observations of tracer dispersion within the Perth central business distri ....Predicting pollutant dispersion within the CBD. The accidental or pre-meditated release of hazardous gases and aerosols within an urban environment are potentially threatening to human life and safety. Emergency responders require adequate information to quickly address these concerns yet the lack of detailed observations and the complex nature of the dispersion make this task difficult. This project will collect detailed observations of tracer dispersion within the Perth central business district and combine these observations with multiscale modelling to redefine appropriate emergency response models as well as their limits. Such analysis will enhance mitigation strategies.Read moreRead less
Assessing clouds and rainfall in Australia's community climate model - Towards an improved simulation of Australia's water resources. Climate change is likely to significantly affect Australia's water resources. A well-measured response to this challenge requires reliable projections of future climate using modern Earth System Models. By thoroughly evaluating Australia's community climate model this research will inform Australia's adaptation policy and through subsequent model development it wi ....Assessing clouds and rainfall in Australia's community climate model - Towards an improved simulation of Australia's water resources. Climate change is likely to significantly affect Australia's water resources. A well-measured response to this challenge requires reliable projections of future climate using modern Earth System Models. By thoroughly evaluating Australia's community climate model this research will inform Australia's adaptation policy and through subsequent model development it will contribute to significant improvements in our ability to understand and predict climate change. Through better informing water resource management the research constitutes an important contribution to an environmentally sustainable Australia. Read moreRead less
Monitoring and Predicting Frost Events in the Agricultural Area of WA. Frost is commonly ranked by farmers as the second most important climate risk after rainfall variability. Thus reliable nocturnal temperature forecasts are of paramount importance in understanding the potential for frost formation and enabling its timely prediction and detection. Such forecasts would allow appropriate active or passive management responses. Utilising the existing meteorological network of the Department of Ag ....Monitoring and Predicting Frost Events in the Agricultural Area of WA. Frost is commonly ranked by farmers as the second most important climate risk after rainfall variability. Thus reliable nocturnal temperature forecasts are of paramount importance in understanding the potential for frost formation and enabling its timely prediction and detection. Such forecasts would allow appropriate active or passive management responses. Utilising the existing meteorological network of the Department of Agriculture, this project aims to develop an integrated frost prediction system that will provide timely estimates of both the spatial and temporal extent of frost events for farmers and agribusiness.Read moreRead less
Real-time atmospheric modelling for centimetre-level positioning based on Global Navigation Satellite System (GNSS) continuously operating reference station networks. Many applications of Global Navigation Satellite System (GNSS) technology, such as surveying, mapping and precise navigation, require real-time positioning accuracies to centimetre levels. To support these applications, many countries are establishing dense networks of continuously operating reference stations, positioned typicall ....Real-time atmospheric modelling for centimetre-level positioning based on Global Navigation Satellite System (GNSS) continuously operating reference station networks. Many applications of Global Navigation Satellite System (GNSS) technology, such as surveying, mapping and precise navigation, require real-time positioning accuracies to centimetre levels. To support these applications, many countries are establishing dense networks of continuously operating reference stations, positioned typically less than 40 km apart. However, for Australia with its large and sparsely populated regions, these dense networks cannot be justified economically. Our project will investigate appropriate enhancement of sparse networks to maintain the same level of accuracy. It will focus on a better understanding of atmospheric conditions, currently a major limitation in the development of sparse networks.Read moreRead less
Coherent LIDAR for Monitoring Air Pollution and Atmospheric Wind-fields. Industry, government and civil defence urgently require compact, field deployable sensors that can measure winds and monitor pollution in the atmospheric boundary layer. Without these sensors they are unable to measure and make informed decisions about windborne dispersion of industrial emissions, environmental pollutants, and chemical/biological toxins under operational conditions. The project will develop eye-safe cohere ....Coherent LIDAR for Monitoring Air Pollution and Atmospheric Wind-fields. Industry, government and civil defence urgently require compact, field deployable sensors that can measure winds and monitor pollution in the atmospheric boundary layer. Without these sensors they are unable to measure and make informed decisions about windborne dispersion of industrial emissions, environmental pollutants, and chemical/biological toxins under operational conditions. The project will develop eye-safe coherent lidar (light detection and ranging) systems that can measure wind velocities at ranges of up to 10 km with an accuracy of about 1 m/s, and can be deployed to field sites as required. The technology will be of major interest to the commercial sector.Read moreRead less
Quantification of Traffic Generated Nano and Ultrafine Particle Dynamics and Toxicity in Transit Hubs and Transport Corridors. The socio-economic benefits to Australia will include (i) new knowledge for the multiparameter assessment of nano and ultrafine particles, pollutants in the centre of current scientific, medical and policy debates (ii) a breakthrough in the scientific understanding of traffic generated particles in the urban atmosphere (iii) determining the toxicological impact of these ....Quantification of Traffic Generated Nano and Ultrafine Particle Dynamics and Toxicity in Transit Hubs and Transport Corridors. The socio-economic benefits to Australia will include (i) new knowledge for the multiparameter assessment of nano and ultrafine particles, pollutants in the centre of current scientific, medical and policy debates (ii) a breakthrough in the scientific understanding of traffic generated particles in the urban atmosphere (iii) determining the toxicological impact of these particles on biological systems. The ultimate economic benefit will be improved urban design to lower human exposure to ultrafine particles, thus reducing health care cost and productivity losses. The research will also place Australia at the forefront of international progress towards better methods for achieving environmental sustainability.Read moreRead less
Monitoring and Predicting Near Real Time Ionospheric Activities with Multi-satellite Data. The ionosphere affects the transmission of electromagnetic waves, which can result in disturbance or intermission of radio signals being used for communication, navigation and other microwave systems. This project aims to monitor and predict near real-time ionospheric activities with multi-satellite data. The expected outcomes include: 1) an innovative algorithm to calculate the Total Electron Content from ....Monitoring and Predicting Near Real Time Ionospheric Activities with Multi-satellite Data. The ionosphere affects the transmission of electromagnetic waves, which can result in disturbance or intermission of radio signals being used for communication, navigation and other microwave systems. This project aims to monitor and predict near real-time ionospheric activities with multi-satellite data. The expected outcomes include: 1) an innovative algorithm to calculate the Total Electron Content from multi-satellite data; 2) an automated software package for mapping 3-dimensional ionospheric profile; and 3) an improved understanding of the detailed processes and causes of ionospheric events, that can enhance the space weather services for Australia and the world.Read moreRead less
QUANTIFICATION OF INTERACTIONS DURING THE DISPERSION OF CORONA IONS AND AIRBORNE PARTICLES NEAR POWER LINES. Currently there is no method for quantification of concentration and dispersion of charged aerosols near high voltage power lines (HVPLs). However, hypothesis have been presented, but not yet proven scientifically, that residents of houses close to combustion sources such as highways or industrial plants and HVPLs may be subjected to health risk due to inhalation of charged aerosols. The ....QUANTIFICATION OF INTERACTIONS DURING THE DISPERSION OF CORONA IONS AND AIRBORNE PARTICLES NEAR POWER LINES. Currently there is no method for quantification of concentration and dispersion of charged aerosols near high voltage power lines (HVPLs). However, hypothesis have been presented, but not yet proven scientifically, that residents of houses close to combustion sources such as highways or industrial plants and HVPLs may be subjected to health risk due to inhalation of charged aerosols. The outcome of this project will be a model for quantitative assessment of the processes occurring during the transport and dispersion of corona ions and combustion aerosol, which will be a tool for predictive risk assessment and informed management of public resources in relation to power line design and maintenance.Read moreRead less