A5083812301- Cryospheric studies and observations
- Geology and Paleoclimatology Research
- Arctic and Antarctic ice dynamics
- Polar Research and Ecology
- Atmospheric and Environmental Gas Dynamics
- Mercury impact and mitigation studies
- Isotope Analysis in Ecology
- Oral microbiology and periodontitis research
- Heavy metals in environment
- Climate change and permafrost
- Antifungal resistance and susceptibility
- Methane Hydrates and Related Phenomena
- Marine and coastal ecosystems
- Marine and environmental studies
- Dental materials and restorations
- Geological Studies and Exploration
- Atmospheric chemistry and aerosols
- Climate Change Communication and Perception
- Underwater Acoustics Research
- Animal and Plant Science Education
- Microbial Community Ecology and Physiology
- Diverse Educational Innovations Studies
- Oral health in cancer treatment
- Offshore Engineering and Technologies
- Diverse Education Studies and Reforms
Australian National University
2019-2024
ARC Centre of Excellence for Climate System Science
2022-2024
Oeschger Centre for Climate Change Research
2024
University of Bern
2024
University of Victoria
2018-2022
Manchester Metropolitan University
2014-2020
British Antarctic Survey
2018-2019
Highly resolved temporal and spatial distributions of trace elements in ocean water can provide insight into processes but carry a significant analytical demand which requires methods that combine accuracy precision with high sample throughput.
Abstract The Arctic Ocean is considered a source of micronutrients to the Nordic Seas and North Atlantic through gateway Fram Strait (FS). However, there paucity trace element data from across gateways, so it remains unclear how exchange shapes micronutrient availability in two ocean basins. In 2015 2016, GEOTRACES cruises sampled Barents Sea Opening (GN04, 2015) FS (GN05, 2016) for dissolved iron (dFe), manganese (dMn), cobalt (dCo), nickel (dNi), copper (dCu) zinc (dZn). Together with most...
The climate of the sub-Antarctic is important in understanding environmental conditions Antarctica and Southern Ocean. However, regional proxy records from this region are scarce. In study, we present stable water isotopes, major ion chemistry, dust first ice core (sub-)Antarctic Young Island. We discuss various dating approaches based on commonly used proxies, such as isotopes seasonally deposited ions, together with site-specific characteristics melt layers. compared estimated...
Investigation of organic compounds in ice cores can potentially unlock a wealth new information these climate archives. We present results from the first ever core drilled on sub-Antarctic island Bouvet, representing climatologically important but understudied region. analyze suite novel and more familiar core, alongside commonly measured ions. Methanesulfonic acid shows significant, positive correlation to winter sea concentration, as does fatty compound, oleic acid. Both may be sourced...
Abstract. Climate reconstructions of the last millennium rely on networks high-resolution and well-dated proxy records. This study presents age-at-depth data preliminary results from new Mount Brown South (MBS) ice cores, collected at an elevation 2084 m boundary Princess Elizabeth Land Kaiser Wilhelm II in East Antarctica. We show initial analysis site meteorology, mean annual chemical species concentrations seasonal cycles, including identification a cycle fluoride concentrations. The...
Abstract. Water stable isotope records from ice cores (δ18O and δD) are a critical tool for constraining long-term temperature variability at high latitudes. However, precipitation in Antarctica consists of semi-continuous small events intermittent extreme events. In regions accumulation, this can bias core towards recording the synoptic climate conditions present during study we utilise combination data, reanalysis products, models to understand how intermittency impacts preserved an Mount...
Complexation by dissolved organic ligands affects the bioavailability and distribution of copper other bioactive trace metals in seawater. However, relatively little is known about origin identity marine copper-complexing ligands, particularly Arctic waters. We used immobilized copper(II)-ion affinity chromatography (IMAC) to isolate (< 0.2 μm) from seawater samples collected during 2015 Canadian GEOTRACES expedition. UV detection at 254 nm was employed monitor elution compounds retained...
Significance Anthropogenic lead (Pb) is widespread and far reaching in the environment. However, it was thought that western Arctic Ocean seawater pristine based on low dissolved Pb proxy data. By measuring isotopes with extremely concentrations, this study shows anthropogenic pervasive seawater, much of from remobilization previously deposited aerosols high-Pb emission period 20th century. Thus, historic pollution still impacts accelerated melting permafrost ice increased coastal erosion...
Abstract Recent studies, including many from the GEOTRACES program, have expanded our knowledge of trace metals in Arctic Ocean, an isolated ocean dominated by continental shelf and riverine inputs. Here, we report a unique, pan‐Arctic linear relationship between dissolved copper (Cu) nickel (Ni) present north 60°N that is absent other oceans. The correlation driven primarily high Cu Ni concentrations low salinity, river‐influenced surface low, homogeneous deep waters, opposing their typical...
Investigation of organic compounds in ice cores can potentially unlock a wealth new information these climate archives. We present results from the first ever core drilled on sub‐Antarctic island Bouvet, representing climatologically important but understudied region. analyze suite novel and more familiar core, alongside commonly measured ions. Methanesulfonic acid shows significant, positive correlation to winter sea concentration, as does fatty compound, oleic acid. Both may be sourced...
Abstract. Climate reconstructions of the last millennium rely on networks high resolution and well-dated proxy records. This study presents age-at-depth data preliminary results from new Mount Brown South ice cores, collected at an elevation 2,084 metres boundary Princess Elizabeth Kaiser Wilhelm II Land in East Antarctica. We show initial analysis site meteorology, mean annual chemical species concentrations, seasonal cycles including a cycle fluoride concentrations with potential link to...
Abstract. The Mount Brown South ice core (MBS 69.111° S 86.312° E) is a new, high resolution drilled in coastal East Antarctica. With mean annual accumulation estimated to be 20–30 cm equivalent throughout the length of (∼295 m), MBS represents archive data spanning 1137 years (873–2009 CE), from an area previously underrepresented by data. Here, we present high-resolution dataset chemistry and impurities obtained via continuous flow analysis (CFA). consists meltwater electrolytic...
Abstract. Peter I Island is situated in the Bellingshausen Sea, a region that has experienced considerable climate change recent decades. Warming sea surface temperatures and reduced ice cover have been accompanied by warming air temperature, increased snowfall, accelerated mass loss over adjacent sheet. Here we present data from first firn core drilled on Island, spanning period 2001–2017 CE. The stable water isotope capture regional changes temperature precipitation (snow accumulation) at...
There are few peer-reviewed publications about public engagement with science that written by microbiologists; those exist tend to be a narrative of an event rather than hypothesis-driven investigation. However, it is relatively easy for experienced scientists use scientific method in their approach engagement. This short communication describes three activities hosted the authors, focused on biofilm control: hand hygiene, plaque control and externally applied antimicrobial coating. In each...
Sub-Antarctic islands and Antarctic coastal regions provide valuable sites for investigating environmental processes in the Southern Ocean. The fact that these are situated within sea ice zone underscores their significance impact of on chemical composition boundary layer. In this study we report multi-year average levels marine aerosols, including bromine, sodium, methanesulphonic acid iodine, measured five firn cores collected from sub-Antarctic Islands sites. records compared with...
Abstract. Water stable isotope records from ice cores (δ18O and δD) are a critical tool for constraining long-term temperature variability in the high-latitudes. However, precipitation Antarctica consists of semi-continuous small events intermittent extreme events. In regions high-accumulation, this can bias core towards recording synoptic climate conditions present during study we utilise combination data, re-analysis products models to understand how intermittency impacts preserved an...