The carbon cycle and climate: new approaches to atmospheric measurements and modelling. Earth's climate is intimately connected to the carbon cycle, which controls atmospheric CO2 through processes such as photosynthesis, respiration and ocean uptake. A thorough understanding of the carbon cycle, and potential feedbacks with climate change, is prerequisite knowledge for informed assessments of future climate, impacts, adaptation and mitigation. This proposal improves that understanding through ....The carbon cycle and climate: new approaches to atmospheric measurements and modelling. Earth's climate is intimately connected to the carbon cycle, which controls atmospheric CO2 through processes such as photosynthesis, respiration and ocean uptake. A thorough understanding of the carbon cycle, and potential feedbacks with climate change, is prerequisite knowledge for informed assessments of future climate, impacts, adaptation and mitigation. This proposal improves that understanding through measurements of CO2 and other key Kyoto-protocol greenhouse gases, links to global networks and satellite measurements, and advanced modelling. Australian science has a very important role to play in international networks due to our unique combination of southern hemisphere location and scientific standing. Read moreRead less
What controls the shift from a hot house climate to a cold house climate: the Eocene/ Oligocene climate transition and greenhouse warming. This study contributes to putting Australia on the map as a centre of excellence in the study of past climates as well as in global warming research. It aims at a greater understanding of the dynamics of past warm climate states. This could ultimately lead to a better knowledge of the formation of the ancient deposits that we mine in Australia today. Furtherm ....What controls the shift from a hot house climate to a cold house climate: the Eocene/ Oligocene climate transition and greenhouse warming. This study contributes to putting Australia on the map as a centre of excellence in the study of past climates as well as in global warming research. It aims at a greater understanding of the dynamics of past warm climate states. This could ultimately lead to a better knowledge of the formation of the ancient deposits that we mine in Australia today. Furthermore, the study of these past warm climates tells us something about current global warming as both involve increased levels of carbon in the atmosphere. The impact of climate change on Australia is likely to be large. Our study of past warm climates helps to gain an understanding of the mechanisms behind climate change and help quantify the risks of climate change posed to Australia.Read moreRead less
The equable climate conundrum: the role of the global ocean in multiple climate regimes. This study will enhance Australia's global engagement in the research of past climates and global warming, and lead to a better understanding of the dynamics and modelling of warm climate states. This will contribute significantly to climate research in Australia and could lead to a better knowledge of the formation of the ancient deposits that we mine today. Furthermore, the study of past warm climates tel ....The equable climate conundrum: the role of the global ocean in multiple climate regimes. This study will enhance Australia's global engagement in the research of past climates and global warming, and lead to a better understanding of the dynamics and modelling of warm climate states. This will contribute significantly to climate research in Australia and could lead to a better knowledge of the formation of the ancient deposits that we mine today. Furthermore, the study of past warm climates tells us something about current global warming, as both involve increased levels of carbon in the atmosphere. The impact of climate change on Australia is likely to be large. This study of past warm climates will improve our understanding of climate change physics and help quantify the risks of climate change posed to Australia.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0668470
Funder
Australian Research Council
Funding Amount
$250,000.00
Summary
High resolution Fourier transform infrared spectrometer for atmospheric remote sensing and laboratory spectroscopy. Climate change is a major global concern, with the potential for major consequences in Australia. This proposal contributes directly to climate change research relevant to Australia through direct measurements of the atmosphere relevant to the understanding of phenomena such as increasing greenhouse gas concentrations and stratospheric ozone depletion. Australia's geographical posi ....High resolution Fourier transform infrared spectrometer for atmospheric remote sensing and laboratory spectroscopy. Climate change is a major global concern, with the potential for major consequences in Australia. This proposal contributes directly to climate change research relevant to Australia through direct measurements of the atmosphere relevant to the understanding of phenomena such as increasing greenhouse gas concentrations and stratospheric ozone depletion. Australia's geographical position in the less populated southern hemisphere, and its advanced scientific infrastructure, mean that it has an especially important and valuable role to play in global atmospheric research. The proposed research participates in several international research programmes.Read moreRead less
Atmospheric composition and climate change. Changing composition and distribution of atmospheric trace gases and aerosols are the driving forces behind changes in climate and the environment at the earth's surface. This proposal is to undertake a program of ground based infrared remote sensing measurements as part of the Network for Detection of Stratospheric Change to investigate some of the most relevant atmospheric processes and species central to the greenhouse effect and ozone depletion. S ....Atmospheric composition and climate change. Changing composition and distribution of atmospheric trace gases and aerosols are the driving forces behind changes in climate and the environment at the earth's surface. This proposal is to undertake a program of ground based infrared remote sensing measurements as part of the Network for Detection of Stratospheric Change to investigate some of the most relevant atmospheric processes and species central to the greenhouse effect and ozone depletion. State-of-the-art measurements, advances in analysis techniques, and the measurement of isotopic fractionation will all contribute to advances in capabilities. Validation of satellite-based remote sensing instruments is also an important facet of the work.Read moreRead less
Integrated Ocean Drilling Program (IODP) drilling in the Great Barrier Reef: unlocking the causes, rates and consequences of abrupt sea level and climate change. The Great Barrier Reef (GBR) and how it will respond to future global climate changes is of fundamental importance to the nation. The project will address this challenge by investigating the submerged fossil coral reefs in the GBR. This will lead to a better understanding of the natural rates, range and forcing mechanisms that control g ....Integrated Ocean Drilling Program (IODP) drilling in the Great Barrier Reef: unlocking the causes, rates and consequences of abrupt sea level and climate change. The Great Barrier Reef (GBR) and how it will respond to future global climate changes is of fundamental importance to the nation. The project will address this challenge by investigating the submerged fossil coral reefs in the GBR. This will lead to a better understanding of the natural rates, range and forcing mechanisms that control global sea-level and climate variability (ie. paleo-ENSO), and geo-biological changes affecting the GBR over the last 20,000 years. This project will provide unique insights into the response of the GBR to past environmental stress and improve predictions about the vulnerability of GBR to future global climate changes.Read moreRead less
Better greenhouse gas budgets: new techniques and applications. The most recent (2001) international assessment strongly confirms the link between global climate change and human-induced changes in atmospheric composition. However, improved knowledge of atmospheric trace gas budgets is essential for better modelling of future climate change and formulation of public policy. We have developed novel techniques for atmospheric trace gas and isoptic analysis that provide new tools for resolving trac ....Better greenhouse gas budgets: new techniques and applications. The most recent (2001) international assessment strongly confirms the link between global climate change and human-induced changes in atmospheric composition. However, improved knowledge of atmospheric trace gas budgets is essential for better modelling of future climate change and formulation of public policy. We have developed novel techniques for atmospheric trace gas and isoptic analysis that provide new tools for resolving trace gas budgets in ways not previously possible. We will apply these tools to improve our understanding of the Australian and global budgets of greenhouse gases, especially nitrous oxide and methane, for which sources still have unacceptably large uncertainties.Read moreRead less
Innovative measurement and modelling of greenhouse fluxes at regional scales across Australia. Carbon dioxide accounts for around 60% of the enhanced greenhouse effect. This proposal aims to markedly improve knowledge of the exchange of carbon, mostly as CO2, between atmospheric, ocean and land-based reservoirs in the Australian region. This will be achieved through a suite of measurements using innovative technologies: satellite and ground based remote sensing as well in situ measurements at ....Innovative measurement and modelling of greenhouse fluxes at regional scales across Australia. Carbon dioxide accounts for around 60% of the enhanced greenhouse effect. This proposal aims to markedly improve knowledge of the exchange of carbon, mostly as CO2, between atmospheric, ocean and land-based reservoirs in the Australian region. This will be achieved through a suite of measurements using innovative technologies: satellite and ground based remote sensing as well in situ measurements at Darwin and on the Ghan railway from Darwin to Adelaide. The measurements will be used to constrain inverse models of the carbon cycle and significantly reduce uncertainties in regional carbon source estimates. These estimates will in turn be compared to the Australian National Greenhouse Gas Inventory for comparison and verification.Read moreRead less
A new paradigm for the geochemistry of mineral precipitation and dissolution in aquatic systems: Polymer-based numerical modelling. The ability to predict the formation and dissolution of solids (minerals and precipitates) in aquatic systems is currently constrained by limitations of the traditional thermodynamic approach. A new approach based on the kinetics of the underlying chemical reactions is expected to overcome these limitations and greatly improve the ability to describe these processes ....A new paradigm for the geochemistry of mineral precipitation and dissolution in aquatic systems: Polymer-based numerical modelling. The ability to predict the formation and dissolution of solids (minerals and precipitates) in aquatic systems is currently constrained by limitations of the traditional thermodynamic approach. A new approach based on the kinetics of the underlying chemical reactions is expected to overcome these limitations and greatly improve the ability to describe these processes. This new fundamental knowledge will be useful in many diverse fields including aquatic geochemistry, soil chemistry, water engineering, and nanotechnology. The new approach will be specifically applied to improve understanding of processes related to the globally significant environmental issues of marine iron fertilisation, ocean acidification and acid sulfate soils.Read moreRead less
Characterizing the hydrological cycle using water isotopes, land-surface models and satellite observations. Water is our most precious natural resource. In Australia, it is also our most precarious. The hydrological cycle describes the movement of water between the ocean, atmosphere and land. Understanding the effect and impact that a changing climate might have on the hydrological cycle is critical to securing Australia's water resources. To address these challenges, we must improve our basic u ....Characterizing the hydrological cycle using water isotopes, land-surface models and satellite observations. Water is our most precious natural resource. In Australia, it is also our most precarious. The hydrological cycle describes the movement of water between the ocean, atmosphere and land. Understanding the effect and impact that a changing climate might have on the hydrological cycle is critical to securing Australia's water resources. To address these challenges, we must improve our basic understanding of the water exchange processes within the Earth system. Our project will exploit new technology in ground and space based observation, combined with advanced modeling and measurement capabilities, to develop an improved understanding and characterization of Australian hydrological cycles and aid in assessing climate change related impacts. Read moreRead less