Quantitative reconstructions of Australian climates since the last Interglacial. A crucial test of the models used to project future climate is how well they reproduce past climates. The project will reconstruct Australian regional climates, from vegetation, fire and runoff records, and use these for climate-model evaluation - helping to provide a more solid basis for management of Australian resources in the future.
When the ice melts: a new perspective on the causes of Quaternary glacial terminations. The project will assemble an unprecedented palaeoclimate time series extending back to 1.2 million years ago that will allow marine and ice core records to be placed onto an absolute time scale. This will allow testing of fundamental hypotheses on why the Earth's climate shifts from glacial to interglacial states, with flow-on effects to climate models.
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE110100045
Funder
Australian Research Council
Funding Amount
$370,000.00
Summary
A mass spectrometer to analyse carbonate isotope records of Australia's climate, soil and groundwater history. Water is a critical resource in Australia, yet there is a fundamental lack of knowledge about the causes and timing of groundwater recharge in the past. This facility will allow researchers to better understand climate and groundwater interactions through high resolution isotope analysis of deposits, such as cave stalagmites and marine corals.
Reconstructing changes in atmospheric circulation over the mid-latitudes of the Southern Hemisphere during the past 3000 years. The climate of the mid-latitudes of the southern hemisphere is of global significance and yet past changes have proved difficult to reconstruct due to the dearth of records. Working across the Southern Ocean region using tree rings, lake sediments and ice cores, the project will produce the first comprehensive reconstruction spanning the last 3000 years.
The last glaciation maximum climate conundrum and environmental responses of the Australian continent to altered climate states. This project will show how climate systems in south east Australia responded to large scale global change the last time this happened, which was about 21,000 years ago. By determining the climate response in Australia to this change, this project will help predict future response in rainfall and temperature to human-induced and natural climate change.
The Impact of Water Stress on Early Humans in the Kalahari Desert. This project aims to understand the impacts of water stressed environments for early modern human behaviour through state-of-the-art excavation techniques and palaeoenvironmental reconstruction at two new archaeological sites in the Kalahari. How humans mitigated water stress during a major technological transition is significant because adaptability to arid environments was crucial for humans expanding beyond Africa and into Aus ....The Impact of Water Stress on Early Humans in the Kalahari Desert. This project aims to understand the impacts of water stressed environments for early modern human behaviour through state-of-the-art excavation techniques and palaeoenvironmental reconstruction at two new archaeological sites in the Kalahari. How humans mitigated water stress during a major technological transition is significant because adaptability to arid environments was crucial for humans expanding beyond Africa and into Australia. The expected outcome of this project is creation of new knowledge on the origins of human resilience to water stress. The benefit lies in the potential to gain insights into meeting future climate challenges by exploring the adaptive strategies developed by early modern humans in the southern Kalahari.Read moreRead less
The Southern Ocean's response to abrupt climate change. This project aims to determine how the Southern Ocean responds to abrupt climate change, through geochemical analysis of marine sediment cores. Rapid warming events of the last ice age provide an analogue to human-caused warming. Experiments using ocean climate models will evaluate the drivers and consequences of the biogeochemical response of different sectors and zones of the Southern Ocean. The intended outcome is a better understanding ....The Southern Ocean's response to abrupt climate change. This project aims to determine how the Southern Ocean responds to abrupt climate change, through geochemical analysis of marine sediment cores. Rapid warming events of the last ice age provide an analogue to human-caused warming. Experiments using ocean climate models will evaluate the drivers and consequences of the biogeochemical response of different sectors and zones of the Southern Ocean. The intended outcome is a better understanding of how and why climate change impacts ocean productivity in the ecologically significant Southern Ocean. This will lead to better representations of carbon feedbacks in climate models and more robust projections of future climate change.Read moreRead less
Environmental and cultural change along the Central Murray River. The aim of this project is to understand how past people in the riverine landscapes of the Murray-Darling Basin (MDB) were influenced by and adapted to environmental change. This will be achieved using a novel cross-disciplinary approach combining state-of-the-art palaeoenvironmental and archaeological methods. Indigenous people of the MDB have always been closely linked to rivers, however, over the period of human habitation flow ....Environmental and cultural change along the Central Murray River. The aim of this project is to understand how past people in the riverine landscapes of the Murray-Darling Basin (MDB) were influenced by and adapted to environmental change. This will be achieved using a novel cross-disciplinary approach combining state-of-the-art palaeoenvironmental and archaeological methods. Indigenous people of the MDB have always been closely linked to rivers, however, over the period of human habitation flows on these rivers were likely subject to changes that exceeded present-day variability. Understanding how these changes have impacted humans, offers clues on adaption to environmental change and aids in developing strategies for living with the inherently variable and vulnerable rivers in drylands.Read moreRead less
Millennial climate change in southern Australia during the Last Glacial. Abrupt warming and cooling events were a persistent feature of Earth's most recent climate cycle. Surprisingly, little is known of how these events affected the climate of Australia. This project will produce precisely dated reconstructions of rainfall and temperature trends in southern Australia during these events. These new terrestrial and ocean data will be compared with model simulations to determine how rapidly abrupt ....Millennial climate change in southern Australia during the Last Glacial. Abrupt warming and cooling events were a persistent feature of Earth's most recent climate cycle. Surprisingly, little is known of how these events affected the climate of Australia. This project will produce precisely dated reconstructions of rainfall and temperature trends in southern Australia during these events. These new terrestrial and ocean data will be compared with model simulations to determine how rapidly abrupt climate perturbations in the Northern Hemisphere reached our region, and the processes by which this occurred. The results will advance theory on how abrupt climate change propagates globally and provide a long-awaited climatic context for capstone events in Australia's natural history.Read moreRead less
Equator to Pole: Reconstructing tropical and Antarctic climate variability over the last millennium and their impacts on southern Australian rainfall. Water resource management is one of the greatest challenges facing sustainable agriculture and urban populations across southern Australia. Key players driving catastrophic droughts in southern Australia are the tropical Indian Ocean Dipole and polar Southern Annual Mode climate systems, which affect moisture availability and transport pathways. T ....Equator to Pole: Reconstructing tropical and Antarctic climate variability over the last millennium and their impacts on southern Australian rainfall. Water resource management is one of the greatest challenges facing sustainable agriculture and urban populations across southern Australia. Key players driving catastrophic droughts in southern Australia are the tropical Indian Ocean Dipole and polar Southern Annual Mode climate systems, which affect moisture availability and transport pathways. This collaborative research project draws together a uniquely-skilled research team to develop targeted coral, ice and cave reconstructions of these climate systems and their impacts on Australian rainfall through the last millennium. This fundamental new knowledge of the drivers of Australian rainfall variability will aid improved predictability of future changes in our valuable water resources. Read moreRead less