Hydrological changes in Australia and the South Pacific. This project plans to use stalagmites from the South–West Pacific to generate continuous rainfall records for the last 2000 years. Stalagmites contain uncorrupted data that are not available in other archives, and provide unparalleled accurate chronologies. The spatial and temporal variations of the data may highlight the interplay of climate drivers, such as El Niño Southern Oscillation, and how they change the distribution of rainfall in ....Hydrological changes in Australia and the South Pacific. This project plans to use stalagmites from the South–West Pacific to generate continuous rainfall records for the last 2000 years. Stalagmites contain uncorrupted data that are not available in other archives, and provide unparalleled accurate chronologies. The spatial and temporal variations of the data may highlight the interplay of climate drivers, such as El Niño Southern Oscillation, and how they change the distribution of rainfall in the Pacific. This knowledge would increase our scientific understanding and enable better predictions of the recurrence of droughts and wet events in Australia.Read moreRead less
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.
Development of a heatwave definition using the health risk-based metrics. Climate change is increasingly recognised as this century's biggest global health threat, but the health consequences of climate change remain to be quantified. A typical example is health risks from heatwaves which kill more people than any other natural hazard in Australia, but few comprehensive datasets are available on what affects heatwaves can have on population health and well-being, and how such evidence can be tra ....Development of a heatwave definition using the health risk-based metrics. Climate change is increasingly recognised as this century's biggest global health threat, but the health consequences of climate change remain to be quantified. A typical example is health risks from heatwaves which kill more people than any other natural hazard in Australia, but few comprehensive datasets are available on what affects heatwaves can have on population health and well-being, and how such evidence can be translated into policy. This project aims to understand the health risks associated with heatwaves, to develop health risk-based metrics to define a heatwave across different areas, and to evaluate its implications for the development of social and health policies within an Australian context.Read moreRead less
When Sinks Become Sources;
Understanding Persistent Organic Pollutant Behaviour in Dynamic Polar Environments. Polar regions are environmental ‘sinks’ for man-made, Persistent Organic Pollutants (POPs). The unique biogeochemical processes governing POP behaviour in the Polar landscape are not understood, yet are necessary to predict their impact in polar ecosystems. The Antarctic seasonal-ice zone provides an archetype for multi-compartment, temporal observations of POP partitioning in respons ....When Sinks Become Sources;
Understanding Persistent Organic Pollutant Behaviour in Dynamic Polar Environments. Polar regions are environmental ‘sinks’ for man-made, Persistent Organic Pollutants (POPs). The unique biogeochemical processes governing POP behaviour in the Polar landscape are not understood, yet are necessary to predict their impact in polar ecosystems. The Antarctic seasonal-ice zone provides an archetype for multi-compartment, temporal observations of POP partitioning in response to the major drivers of ice cover and primary productivity. In addition, the major Antarctic POP reservoirs of seawater and ice will be characterised. Empirical data will be used to parameterise a regional fugacity model. Model application to varying climate scenarios will extend our understanding of POP behaviour and threat in polar regions.Read moreRead less
Shaping a sunburnt country: fire, climate and the Australian landscape. Fire shapes Australia’s landscape, biodiversity and resources. This project aims to quantify the recent history of fire intensity and severity using several novel proxies in the fire-prone landscapes of south-eastern Australia. Calibration of these new proxies to recent wildfires will be used for a better characterisation of fire regimes. This research will be applied to sedimentary archives to investigate how fire regimes h ....Shaping a sunburnt country: fire, climate and the Australian landscape. Fire shapes Australia’s landscape, biodiversity and resources. This project aims to quantify the recent history of fire intensity and severity using several novel proxies in the fire-prone landscapes of south-eastern Australia. Calibration of these new proxies to recent wildfires will be used for a better characterisation of fire regimes. This research will be applied to sedimentary archives to investigate how fire regimes have evolved over the past 100 years. The outcomes will inform debates about the relationship between climatic variability and fire severity, and this will contribute to increase the preparedness of natural resource management to potential future climate and land-use scenarios.Read moreRead less
Space gravity: squeezing the last drop of hydrological information out of current and future missions. Australia needs space gravity measurements in order to estimate regional-scale total water storage changes on our continent. This project will deliver the analysis capability required to exploit all the measurements of the current Gravity Recovery and Climate Experiment (GRACE) mission and to place Australia in a state of readiness for the 2017 GRACE Follow On mission.
Back to the Future: Interglacial Warming and the West Antarctic Ice Sheet . The Antarctic is highly-sensitive to abrupt changes caused by the passing of tipping points within the climate system. Crucially, the instrumental record is too short to resolve major uncertainties surrounding future warming. The Last Interglacial (125,000 yrs ago) was 2°C warmer than today and experienced 6-11 m higher global sea levels. The role of Antarctica is vital for constraining sea-level projections. This Austra ....Back to the Future: Interglacial Warming and the West Antarctic Ice Sheet . The Antarctic is highly-sensitive to abrupt changes caused by the passing of tipping points within the climate system. Crucially, the instrumental record is too short to resolve major uncertainties surrounding future warming. The Last Interglacial (125,000 yrs ago) was 2°C warmer than today and experienced 6-11 m higher global sea levels. The role of Antarctica is vital for constraining sea-level projections. This Australian-led international project aims to determine the mechanisms and impacts of past interglacial Antarctic warming up to 2°C (relative to pre-industrial). Innovative techniques integrating horizontal ice cores and high resolution marine records will help identify polar tipping points and better plan for impacts in Australia.Read moreRead less
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.
Global climate change and coastal landscape evolution in southern Australia. This project aims to reconstruct environmental changes that occurred in southern Australia during a geologically recent time interval termed the Early-Middle Pleistocene Transition (1.2 million to 700 thousand years ago) and an interglacial period some 400,000 years ago. Using innovative geochronological, geochemical and modelling techniques, the environmental changes that shaped modern Australian coastal landscapes, in ....Global climate change and coastal landscape evolution in southern Australia. This project aims to reconstruct environmental changes that occurred in southern Australia during a geologically recent time interval termed the Early-Middle Pleistocene Transition (1.2 million to 700 thousand years ago) and an interglacial period some 400,000 years ago. Using innovative geochronological, geochemical and modelling techniques, the environmental changes that shaped modern Australian coastal landscapes, including the intensification of aridity and their timing will be examined. The project will yield new knowledge about the sensitivity of landscapes to current and ongoing environmental changes and derive explanatory models of the rates and characteristics of landscape response to assist future coastal environmental management.Read moreRead less
Climate change and national security: international responses. This project aims to give a systematic account of how states facing different dynamics of threats associated with climate change have gone about developing distinct institutional responses, policy settings and practices. Climate change is increasingly recognised as a national security threat. A range of states have developed climate security strategies to address climate change that threaten defence infrastructure and contribute to p ....Climate change and national security: international responses. This project aims to give a systematic account of how states facing different dynamics of threats associated with climate change have gone about developing distinct institutional responses, policy settings and practices. Climate change is increasingly recognised as a national security threat. A range of states have developed climate security strategies to address climate change that threaten defence infrastructure and contribute to population movements, regional instability and even conflict. The findings from this project will inform recommendations for Australian policy-makers in addressing the climate change-security relationship that can be communicated to practitioners, and tailored to the needs of Australia’s security and defence establishment. This project will help Australia respond effectively to pressing impacts of environmental change.Read moreRead less