A5063896481- Geology and Paleoclimatology Research
- Climate variability and models
- Groundwater and Isotope Geochemistry
- Coral and Marine Ecosystems Studies
- Oceanographic and Atmospheric Processes
- Marine and fisheries research
- Hydrology and Watershed Management Studies
- Tree-ring climate responses
- Geophysics and Gravity Measurements
- Karst Systems and Hydrogeology
- Geological formations and processes
- Pleistocene-Era Hominins and Archaeology
- Meteorological Phenomena and Simulations
- Methane Hydrates and Related Phenomena
- Geochemistry and Geologic Mapping
- Isotope Analysis in Ecology
- Geomagnetism and Paleomagnetism Studies
- Plant Water Relations and Carbon Dynamics
- Cryospheric studies and observations
- Maritime and Coastal Archaeology
- Calibration and Measurement Techniques
- Geological and Geophysical Studies
- Scientific Measurement and Uncertainty Evaluation
- Marine animal studies overview
- Hydrology and Drought Analysis
Australian Nuclear Science and Technology Organisation
2012-2024
University of Hawaiʻi at Mānoa
2013
The University of Melbourne
2013
University of Bern
2013
Oeschger Centre for Climate Change Research
2013
Australian Institute of Nuclear Science and Engineering
2007
Abstract The past 1500 years provide a valuable opportunity to study the response of climate system external forcings. However, integration paleoclimate proxies with modeling is critical improving understanding dynamics. In this paper, model and proxy records are therefore used role natural anthropogenic forcings in driving global climate. inverse forward approaches data–model comparison applied, sources uncertainty identified discussed. first two case studies, simulations compared...
Abstract. Reconstructions of global hydroclimate during the Common Era (CE; past ∼2000 years) are important for providing context current and future environmental change. Stable isotope ratios in water quantitative indicators on regional to scales, these signals encoded a wide range natural geologic archives. Here we present Iso2k database, compilation previously published datasets from variety archives that record stable oxygen (δ18O) or hydrogen (δ2H) isotopic compositions waters, which...
Abstract. The response of the hydrological cycle to anthropogenic climate change, especially across tropical oceans, remains poorly understood due scarcity long instrumental temperature and records. Massive shallow-water corals are ideally suited reconstructing past oceanic variability as they widely distributed tropics, rapidly deposit calcium carbonate skeletons that continuously record ambient environmental conditions, can be sampled at monthly annual resolution. Climate reconstructions...
Abstract. The stable oxygen isotope parameter δ18O remains the most widely utilised speleothem proxy for past climate reconstructions. Uncertainty can be introduced into stalagmite from a number of factors, one which is heterogeneity groundwater flow in karstified aquifers. Here, we present lumped hydrological model, KarstFor, capable generating monthly simulations surface water – ground more than thousand-year time periods. Using variety input series, use this model first to compare...
Three modern speleothems were sampled at high resolution for radiocarbon analysis to identify their bomb-pulse signatures and construct chronologies. Each speleothem exhibited a different 14 C response, presumed be related site characteristics such as vegetation, temperature, rainfall, depth below the surface, water pathway through aquifer. Peak activity WM4 is 134.1 pMC, highest cited thus far in literature suggestive of lower inertia this site. Dead carbon fractions each stalagmite...
Providing estimates of past climate changes on interannual–millenial timescales requires suitable regression models between and proxies. Many proxies appear to show relationships with that are timescale dependent. Any proxy‐climate model should be able replicate the major patterns observed at multiple timescales. Here we develop a new climate‐isotope for speleothems from middle latitude site. In low latitudes, daily variation in precipitation isotopes (within individual months) is largely...
Abstract. The Great Barrier Reef (GBR), Australia has a long history of palaeoenvironmental coral research. However, it can be logistically difficult to find the relevant research and records, which are often unpublished or exist as ‘grey literature’. This hinders researchers’ ability efficiently assess current state core studies on GBR thus identify any key knowledge gaps. study presents Coral Skeletal Records Database (GBRCD), compiles 208 records from skeletal conducted since early 1990s....
Abstract Dynamical components of Earth’s ice–ocean–atmosphere system evolve along characteristic trajectories, which make these partly predictable. This paper reviews several methods for extracting predictable from space–time fields. These are optimal persistence analysis (OPA), slow feature (SFA), principal trend (PTA), average predictability time decomposition (APTD), and forecastable (ForeCA). generally find a set that ordered by their predictability, but each method uses different...
The editor of this volume notes that the intention book is to “show how isotopes can be applied understanding paleoenvironment.” With intention, several key issues should addressed in each chapter. These include: vary on temporal and spatial scales (e.g., timewise amplitude variation at different latitudes over timescales), statistical (are methods data sufficient for investigating isotope data?).
This study investigates the links between Mediterranean precipitation δ 18 O and sea level pressure (SLP) anomalies during winter months over years 1960–present. Previous studies have considered only influence of North Atlantic Oscillation (NAO) on rainfall at sites, but SLP variability evolves with least three degrees freedom, which means that other climate patterns may be equally important in influencing O. In this study, Multivariate Linear Regression (MLR) is employed to identify...
Abstract. Reconstructions of global hydroclimate during the Common Era (CE; past ~ 2000 years) are important for providing context current and future environmental change. Stable isotope ratios in water quantitative indicators on regional to scales, these signals encoded a wide range natural geologic archives. Here we present Iso2k database, compilation previously published datasets from variety archives that record stable oxygen (δ18O) or hydrogen (δ2H) isotopic composition waters, which...