Derivation of long-term hydroclimatic sequences for water resources engineering, management and planning. This project aims to develop in-situ reconstructions of flood and drought occurrence in the Sydney Warragamba catchment. The unique approach will utilise two complementary methods to provide robust insights into historic variability at the location of interest. The derived sequences will be used to augment the instrumental record, the sole basis for current drought risk assessment. A key out ....Derivation of long-term hydroclimatic sequences for water resources engineering, management and planning. This project aims to develop in-situ reconstructions of flood and drought occurrence in the Sydney Warragamba catchment. The unique approach will utilise two complementary methods to provide robust insights into historic variability at the location of interest. The derived sequences will be used to augment the instrumental record, the sole basis for current drought risk assessment. A key outcome will be an accurate appreciation of long-term drought occurrence. This will also provide a stronger basis for utilising climate information in guiding day-to-day reservoir and water supply management. The proxy histories are of key importance in estimating future flood and drought risk assessments for water resources management and planning.Read moreRead less
Interdisciplinary greenhouse gas assessment - nitrous oxide emissions from marine wastewater disposal. Data generated during this research will resolve ongoing uncertainties surrounding a blind spot in national greenhouse gas (GHG) abatement policy and methodology. Current national and international GHG emission estimates are unable to account for N2O emissions resulting from the downstream disposal phase of the wastewater management cycle, and as a result, actual GHG emissions may be far greate ....Interdisciplinary greenhouse gas assessment - nitrous oxide emissions from marine wastewater disposal. Data generated during this research will resolve ongoing uncertainties surrounding a blind spot in national greenhouse gas (GHG) abatement policy and methodology. Current national and international GHG emission estimates are unable to account for N2O emissions resulting from the downstream disposal phase of the wastewater management cycle, and as a result, actual GHG emissions may be far greater than currently estimated. This research will provide primary data on the magnitude of downstream N2O emissions coming from the near-shore marine disposal of primary-level municipal wastewater in Australia. Results from this research will help quantify the carbon footprint associated with marine disposal of poorly treated effluents worldwide.Read moreRead less
A Stochastic Downscaling Framework for Catchment Scale Climate Change Impact Assessment. We propose a framework for climate change impact assessment at the catchment scale, that can both assess the change in catchment yield, as well as refine management policies to mitigate likely impacts. A key aim is to represent the full uncertainty in the simulated streamflow, thus enabling a risk-based comparison of current policies with those for climate change conditions. Given the importance of this rese ....A Stochastic Downscaling Framework for Catchment Scale Climate Change Impact Assessment. We propose a framework for climate change impact assessment at the catchment scale, that can both assess the change in catchment yield, as well as refine management policies to mitigate likely impacts. A key aim is to represent the full uncertainty in the simulated streamflow, thus enabling a risk-based comparison of current policies with those for climate change conditions. Given the importance of this research to the availability of water under a climate change scenario, this proposal has been listed under the ARC's Research Priority 1: 'An Environmentally Sustainable Australia', with the specific priority goals being 'Water - A Critical Resource', and 'Responding to climate change and variability'.Read moreRead less
The ARC Earth System Science Research Network. The ARC Earth System Science Network incorporates data collectors, modellers and impacts researchers to address the impacts of climate change and variability on Human, biological and physical systems. Our capacity to adapt to changes in water availability, agricultural productivity, the likelihood of species extinctions, and risks to human health will be enhanced through the Network's use of frontier technologies. The enhanced capacity to use data a ....The ARC Earth System Science Research Network. The ARC Earth System Science Network incorporates data collectors, modellers and impacts researchers to address the impacts of climate change and variability on Human, biological and physical systems. Our capacity to adapt to changes in water availability, agricultural productivity, the likelihood of species extinctions, and risks to human health will be enhanced through the Network's use of frontier technologies. The enhanced capacity to use data and model the Earth System will allow policymakers to make more informed decisions with regard to water, biodiversity, human health, industry and agriculture sustainability; thereby enhancing the national capacity to respond to climate change and variability and securing our common interest.Read moreRead less
Special Research Initiatives - Grant ID: SR0354594
Funder
Australian Research Council
Funding Amount
$20,000.00
Summary
The Australian Climate System Network. The climate system integrates the atmosphere, oceans, cryosphere, biosphere, land-surface and the fluxes of energy, water and biogeochemical quantities between these elements. Changes in climate affect Australia dramatically: for example, the cost of the recent drought exceeded $10 billion. To enable internationally competitive climate system research, networking is required to enhance our national capability and our international connectivity. We will expl ....The Australian Climate System Network. The climate system integrates the atmosphere, oceans, cryosphere, biosphere, land-surface and the fluxes of energy, water and biogeochemical quantities between these elements. Changes in climate affect Australia dramatically: for example, the cost of the recent drought exceeded $10 billion. To enable internationally competitive climate system research, networking is required to enhance our national capability and our international connectivity. We will explore the establishment of a Climate System Network by facilitating communication between Universities, government agencies and CRCs. The Climate System Network will enable new climate-related questions relating to the sustainability of the Australian physical and Human environments to be explored.Read moreRead less
Defining the relationship between microscale wave breaking and enhanced air-water interfacial exchange rates of low solubility gases. Accurate parameterisations of absorption rates of low-solubility gases (e.g. oxygen, carbon dioxide) across open air-water interfaces are important to industry and the environmental sciences, e.g. for estimating carbon dioxide transfer rates in industry and the global environment as well as rates of the re-aeration of nutrient-enriched water. Recent studies show t ....Defining the relationship between microscale wave breaking and enhanced air-water interfacial exchange rates of low solubility gases. Accurate parameterisations of absorption rates of low-solubility gases (e.g. oxygen, carbon dioxide) across open air-water interfaces are important to industry and the environmental sciences, e.g. for estimating carbon dioxide transfer rates in industry and the global environment as well as rates of the re-aeration of nutrient-enriched water. Recent studies show that at open air-water interfaces under moderate wind forcing, absorption rates are primarily determined by microscale wave breaking. This project will determine the dependence of gas flux rates on the scale, strength and intermittency of microscale wave breaking and, by incorporating this key process, produce substantially improved predictive schemes.Read moreRead less
Integrated assessment of climate change, climate input errors and land-use change on soil-moisture and carbon-balance in a catchment simulation framework. Assessing soil moisture and carbon balance changes in a warmer climate is important for land-use and agricultural planning. A decision support tool is proposed that performs the assessment and allows us to develop plans that reduce adverse impacts. The tool consists of three parts. The first part models changes in rainfall accuracy to calibrat ....Integrated assessment of climate change, climate input errors and land-use change on soil-moisture and carbon-balance in a catchment simulation framework. Assessing soil moisture and carbon balance changes in a warmer climate is important for land-use and agricultural planning. A decision support tool is proposed that performs the assessment and allows us to develop plans that reduce adverse impacts. The tool consists of three parts. The first part models changes in rainfall accuracy to calibrate approaches for catchment simulation. The second part simulates rainfall under climate change conditions using stochastic downscaling. The third part simulates future soil moisture and carbon balance using downscaled climate inputs. The end result is a probabilistic simulation of the catchment hydrology under future climates.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0989072
Funder
Australian Research Council
Funding Amount
$100,000.00
Summary
High throughput nitrogen analysis for ecological studies. Australian environments are unproductive partly because they contain little Nitrogen (N) and changes in atmospheric CO2 will exacerbate this. Furthermore, animals cannot extract all the N from the plants they eat. An assay has been developed that measures how much they can extract (available N) and it is intended to use it to measure habitat quality and the effects of climate change over large tracts of land. This requires thousands of ....High throughput nitrogen analysis for ecological studies. Australian environments are unproductive partly because they contain little Nitrogen (N) and changes in atmospheric CO2 will exacerbate this. Furthermore, animals cannot extract all the N from the plants they eat. An assay has been developed that measures how much they can extract (available N) and it is intended to use it to measure habitat quality and the effects of climate change over large tracts of land. This requires thousands of N analyses. The equipment we are requesting - a LECO combustion analyser, allows us to analyse samples quickly and safely and uses fewer chemicals and much less water than do traditional machines.Read moreRead less
Impacts of climate change on coastal floodplain wetland biogeochemistry and surface water quality. The most vulnerable Australian landscapes to global warming driven sea-level rise are our low-lying coastal floodplains. Seawater inundation dramatically affects soil chemistry and water quality. Over 74,000 km2 of the low-lying coastal floodplains of Australia contain acid sulfate soils. For these soils, seawater inundation has the potential to greatly enhance the release of acidity, with a high c ....Impacts of climate change on coastal floodplain wetland biogeochemistry and surface water quality. The most vulnerable Australian landscapes to global warming driven sea-level rise are our low-lying coastal floodplains. Seawater inundation dramatically affects soil chemistry and water quality. Over 74,000 km2 of the low-lying coastal floodplains of Australia contain acid sulfate soils. For these soils, seawater inundation has the potential to greatly enhance the release of acidity, with a high capacity to severely degrade wetlands, estuaries and farmland. This project will directly contribute to our national capacity to assess and manage impacts from climate change, providing greater protection of our coastal floodplains resources.Read moreRead less
Palaeoclimatic and environmental significance of major Late Quaternary drainage contributions and disruptions in the Lake Eyre basin. This study will advance our knowledge of the most remarkable floods ever known to have occurred in Australia. They were associated with a vast aquatic ecosystem in what today is the barren northern end of the Flinders Ranges, a region of desert dunes and salt lakes. Remarkably, such wet conditions appear to have coincided with episodes of megafaunal extinction and ....Palaeoclimatic and environmental significance of major Late Quaternary drainage contributions and disruptions in the Lake Eyre basin. This study will advance our knowledge of the most remarkable floods ever known to have occurred in Australia. They were associated with a vast aquatic ecosystem in what today is the barren northern end of the Flinders Ranges, a region of desert dunes and salt lakes. Remarkably, such wet conditions appear to have coincided with episodes of megafaunal extinction and with the human occupation of Australia. The results will provide valuable information with which to better understand the the main global drivers of episodes of profound wetness and dryness in Australian climate. Read moreRead less