Storm Hazards Testbed
The South East Queensland (SEQ) Storm Hazards Testbed is a field program supported by the University of Queensland (UQ), the Australian Bureau of Meteorology (BoM), the National Environmental Science Program (NESP), Guy Carpenter, Fugro Roames and Argonne National Laboratory. The goal of the testbed is to improve current capacity for mitigating against convective storm hazards through remote sensing and in-situ technology. This includes improving both nowcasting and the long-term understanding of damaging wind and hail across SEQ and nationally. Improving current capabilities is important because (1) convective storm hazards contribute the greatest insured losses across Australia, (2) rapidly increasing population of Australia’s coastal regions, including SEQ, continue to increase vulnerability, (3) there is a lack of research regarding convective storm hazards in subtropical regions of Australia and coastal regions internationally, (4) this lack of understanding limits our ability to calibrate and verify techniques for analysing convective storm hazards.
The Applicability of organic spring deposits for reconstructing late Quaternary climatic and Environmental Change
There are few continuous palaeoenvironmental records from the monsoonal Kimberley region of northwest Australia, a region with a rapidly growing field of archaeological research. Unlocking the Kimberley’s environmental past is critical in providing an environmental context for known trends in human occupation in the region over the last 40,000 years. This research will also assess the suitability of tropical Australian mound spring peatlands as archives of environmental change, address the dearth of continuous palaeo-environmental data in northwest Australia and fill a gap in the knowledge of late Quaternary climate and environmental change in tropical Australasia.High resolution multi-proxy analyses on sediment cores collected from Kimberley mound springs is the key to unlocking the region’s environmental past. Analysis will be conducted on pollen, micro-charcoal, diatoms, peat humification, dust and other sediment characteristics to reconstruct vegetation, hydrology and aridity.
The Energy Balance of Contrasting Vegetation Types on a Subtropical Sand Island
In subtropical coastal environments little is known about the nature of surface-atmosphere interactions and the transfer of mass and energy in the lower atmosphere. This project will contribute towards filling this knowledge gap by using the eddy covariance methodology to provide concurrent measurements of three contrasting groundwater dependent vegetation types on Bribie Island, a subtropical sand island off the coast of South East Queensland, Australia. Quantification of the energy balance will provide new insight into the relationship between coastal subtropical vegetation and background meteorological conditions, for example, the vegetative response to different air mass characteristics.
Bushfire Convective Plume Experiment: A Mobile X-band Field Campaign into Fire-Driven Convection in Australia
The prediction of pyroconvection presents complex problems for meteorologists and wildfire managers, given that plume-driven feedback processes between fire and atmosphere can lead to unpredictable and dangerous wildfire behaviour. In particular, plume dynamics is a significant factor in the transport of burning debris leading to new fires often many kilometres in advance of the main fire front in a process known as spotting. Here we present the initial findings of the Bushfire Convective Plume Experiment (BCPE), using portable dual-polarized X-band radar (from The University of Queensland; UQ-XPOL) to study fire-driven convection in Australia. Coupled with portable Automatic Weather Station observations, time-lapse photography, airborne multispectral imaging and spot-fire mapping, the design of the BCPE enables quantitative analysis of pyroconvection and its role in fire behaviour. The results to date include observations of three significant wildfires and one prescribed burn, with insights into deployment strategy, plume evolution, vortex generation, dual polarisation signatures and pyrocumulonimbus initiation. The findings demonstrate the suitability of portable, dual-polarized X-band Doppler radar for this application. There is an emerging space for the use of the X-band frequency matched with fire behaviour data where the nature of the in-plume scatterers remains poorly understood.
Trees Effect on Snowpack Energetics Experiment
The Snowy Mountains of Southeast Australia are home to mild temperatures, wet winters, and a marginal snowpack that sits precariously on the edge of complete ablation for the majority of the winter season. Small fluctuations in energy to the snowpack can cause dramatic increases in melt or storage during the winter. This project aims to examine and quantify the impacts of Eucalyptus Pauciflora trees on snowpack energetics through exhaustive measurement of energy transfer in forested regions of the Snowy Mountains. Effects of single trees as well as those of living and dead (burned) tree stands on snow accumulation, ablation, and snow water equivalent (SWE) will be investigated over a variety of spatiotemporal scales. This study will be crucial to water management in the region and could be considered a pilot study for changes to forested snowpacks that will accompany climate change as it impacts the mountainous regions in the mid- and upper-latitude regions of the world.