Drought, El Niño and Climate Change in Queensland over the last 200,000 years: the Lynch's Crater lake record. Lynch's Crater (Queensland) provides the longest, most sensitive terrestrial record of vegetation and climate change in the low altitude tropics. A multidisciplinary approach will exploit the potential of a core collected in 2003 through high-resolution multiproxy (sedimentology, geochemistry, stable and radiogenic isotopes, pollen, charcoal and diatoms) studies. The results will contri ....Drought, El Niño and Climate Change in Queensland over the last 200,000 years: the Lynch's Crater lake record. Lynch's Crater (Queensland) provides the longest, most sensitive terrestrial record of vegetation and climate change in the low altitude tropics. A multidisciplinary approach will exploit the potential of a core collected in 2003 through high-resolution multiproxy (sedimentology, geochemistry, stable and radiogenic isotopes, pollen, charcoal and diatoms) studies. The results will contribute substantially to the resolution of current debates on the role of the tropics in global climate forcing at a variety of temporal scales, including that of the El Niño phenomenon. The reconstruction of temperature and precipitation over the past 200,000 years will improve global climate databases and prediction models.Read moreRead less
Impact of reforestation on the mitigation of climate extremes in eastern Australia resulting from global warming. This project will provide new information for climate change policy development and the goal of an Environmentally Sustainable Australia. It has a strong policy-management imperative, investigating the need for the maintenance and restoration of healthy native vegetation cover as part of Australia’s climate change mitigation and adaptation strategies. Our previous research has shown ....Impact of reforestation on the mitigation of climate extremes in eastern Australia resulting from global warming. This project will provide new information for climate change policy development and the goal of an Environmentally Sustainable Australia. It has a strong policy-management imperative, investigating the need for the maintenance and restoration of healthy native vegetation cover as part of Australia’s climate change mitigation and adaptation strategies. Our previous research has shown that land clearing has contributed to climate change, including more severe and persisting droughts, in eastern Australia. Successful implementation of the research findings will lead to an increased ability of regional landscapes to buffer against a more extreme future climate driven by increased concentrations of greenhouse gases.Read moreRead less
Quantifying the El Niño-Indian Ocean Dipole system using high-resolution coral palaeoclimate archives. The ocean surrounding Indonesia is the warmest on Earth and a major source of energy for global atmospheric circulation. Understanding the role of the Warm Pool in future climate change is of key importance, but highly controversial because the potential extent of its variability is largely unknown. To address this issue, this project will provide the first major geochemical investigation of ....Quantifying the El Niño-Indian Ocean Dipole system using high-resolution coral palaeoclimate archives. The ocean surrounding Indonesia is the warmest on Earth and a major source of energy for global atmospheric circulation. Understanding the role of the Warm Pool in future climate change is of key importance, but highly controversial because the potential extent of its variability is largely unknown. To address this issue, this project will provide the first major geochemical investigation of recently discovered ancient corals in Indonesia using state-of-the-art microanalytical techniques. Outcomes from these palaeoclimate records will advance our understanding of global climate change, rainfall variability related to the El Nino - Indian Ocean Dipole system, and Australian drought.Read moreRead less
Are humans responsible for recent changes in the behaviour of tropical cyclones? Decoupling natural variability from human influence using isotopes. An increase in the frequency of intense landfalling tropical cyclones will have a major impact upon Australia's economy and the safety of its citizens and visitors. There is little doubt that global climate change will cause this increase. Understanding when this might occur and the extent of this change over and above that which could also occur na ....Are humans responsible for recent changes in the behaviour of tropical cyclones? Decoupling natural variability from human influence using isotopes. An increase in the frequency of intense landfalling tropical cyclones will have a major impact upon Australia's economy and the safety of its citizens and visitors. There is little doubt that global climate change will cause this increase. Understanding when this might occur and the extent of this change over and above that which could also occur naturally will help reduce economic loss and save peoples' lives. Using isotope records of tropical cyclones and global climate models we will differentiate natural from human induced changes and ascertain the likely future impact of this hazard on Australia and its near neighbours.Read moreRead less
Fish ear stones for monitoring changes in environmental conditions. The ear-stones (=otoliths) of territorial reef fish could provide environmental records over a great latitudinal range. Important environmental variation includes upwelling, riverine input, the southern oscillation and climate change. Laser mass-spectrometry will be used to resolve spatial and temporal variation in environmental conditions experienced in tropical and temperate waters over periods of up to 50 years. Experiments ....Fish ear stones for monitoring changes in environmental conditions. The ear-stones (=otoliths) of territorial reef fish could provide environmental records over a great latitudinal range. Important environmental variation includes upwelling, riverine input, the southern oscillation and climate change. Laser mass-spectrometry will be used to resolve spatial and temporal variation in environmental conditions experienced in tropical and temperate waters over periods of up to 50 years. Experiments will be done to determine the duration of events (ie changes in water chemistry) that are reliably recorded. Environmental variation is known to influence fish populations, including commercial species, but data on frequency and spatial extent of these impacts are few.Read moreRead less
The Indian Ocean Dipole, Australasian drought, and the great-earthquake cycle: Long-term perspectives for improved prediction. The protracted drought across Australia and Boxing Day 2004 earthquake in Sumatra defied prediction, and are causing incalculable environmental, economic, and social harm. Knowledge of past climate extremes will enhance our ability to predict climate change, and alleviate adverse affects for Australasian nations who miss-out in the future redistribution of life-giving mo ....The Indian Ocean Dipole, Australasian drought, and the great-earthquake cycle: Long-term perspectives for improved prediction. The protracted drought across Australia and Boxing Day 2004 earthquake in Sumatra defied prediction, and are causing incalculable environmental, economic, and social harm. Knowledge of past climate extremes will enhance our ability to predict climate change, and alleviate adverse affects for Australasian nations who miss-out in the future redistribution of life-giving moisture. Insights into the great-earthquake cycle will help fulfil Australia's responsibility to predict tsunamis, for the benefit of nations fringing Australasian seismotectonic zones. Development of improved techniques in palaeoclimatology, palaeoclimate modelling, and palaeoseismology will provide new collaborations and opportunities for research, training, and education.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0668400
Funder
Australian Research Council
Funding Amount
$100,000.00
Summary
A high-throughput stable isotope ratio mass spectrometer for water resource management and climate change studies. Cave speleothems are highly sensitive to climate and are widely used to investigate past climate variability. Many researchers in Australia are now employing speleothems to find out more about the long-term behaviour of the Australian climate system, especially regarding ENSO. However, progress is inhibited by a lack of appropriate instrumentation capable of meeting the unique deman ....A high-throughput stable isotope ratio mass spectrometer for water resource management and climate change studies. Cave speleothems are highly sensitive to climate and are widely used to investigate past climate variability. Many researchers in Australia are now employing speleothems to find out more about the long-term behaviour of the Australian climate system, especially regarding ENSO. However, progress is inhibited by a lack of appropriate instrumentation capable of meeting the unique demands of speleothem research. Our new mass spectrometer will provide precise, rapid and low-cost isotope analyses of speleothem samples, and in doing so generate exciting and important palaeoclimate data, particularly in the area of pre-instrumental rainfall histories.Read moreRead less
Water resource management of the Snowy Mountains Hydro-electric Scheme catchment and the Murray-Darling River system - a new perspective on system reliability from drought history reconstruction. The Snowy Mountains Hydro-electric Scheme assists in underwriting the production of $3 billion of agricultural products in the Murray-Darling Basin each year by providing a reliable source of water west of the Great Dividing Range, while Hydro-electric generation from the Scheme is worth annually severa ....Water resource management of the Snowy Mountains Hydro-electric Scheme catchment and the Murray-Darling River system - a new perspective on system reliability from drought history reconstruction. The Snowy Mountains Hydro-electric Scheme assists in underwriting the production of $3 billion of agricultural products in the Murray-Darling Basin each year by providing a reliable source of water west of the Great Dividing Range, while Hydro-electric generation from the Scheme is worth annually several hundred million dollars and provides 70% of the renewable energy supplied to the eastern mainland grid, thereby avoiding 5Mt of carbon dioxide emissions each year. This study will ensure the ongoing sustainable and efficient management of the Schemes water resources in response to predicted climate variability and most importantly, severe drought. Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE100100141
Funder
Australian Research Council
Funding Amount
$420,000.00
Summary
High-resolution ITRAX XRF core scanning facility for global change research. This facility will enable researchers to obtain high-resolution geochemical profiles in the study of environmental change and climate variability. It will provide archive data on the variation of density and chemical element composition along sediment and soil cores, rock cores, wood samples, speleothems and corals. These archives contain important information such as human activity, climate variability, water quality c ....High-resolution ITRAX XRF core scanning facility for global change research. This facility will enable researchers to obtain high-resolution geochemical profiles in the study of environmental change and climate variability. It will provide archive data on the variation of density and chemical element composition along sediment and soil cores, rock cores, wood samples, speleothems and corals. These archives contain important information such as human activity, climate variability, water quality changes, pollution histories, recent geomorphological change, land-use change, introduction of invasive species and the occurrence of bushfires. A better understanding of the occurrence and timing of these major environmental issues is of national and regional importance.Read moreRead less