A5054312317- Cryospheric studies and observations
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Geology and Paleoclimatology Research
- Winter Sports Injuries and Performance
- Arctic and Antarctic ice dynamics
- Polar Research and Ecology
- Atmospheric chemistry and aerosols
- Isotope Analysis in Ecology
- Per- and polyfluoroalkyl substances research
- Metal-Organic Frameworks: Synthesis and Applications
- Toxic Organic Pollutants Impact
- Earthquake Detection and Analysis
- Carbon dioxide utilization in catalysis
- Covalent Organic Framework Applications
- Landslides and related hazards
- Atmospheric and Environmental Gas Dynamics
- Fire effects on ecosystems
- Industrial Gas Emission Control
- Gas Sensing Nanomaterials and Sensors
- Icing and De-icing Technologies
British Antarctic Survey
2020-2025
University of Manchester
2018-2022
Natural Environment Research Council
2022
Per- and polyfluoroalkyl substances (PFAS) are a group of persistent organic contaminants which some toxic bioaccumulative. Several PFAS can be formed from the atmospheric degradation precursors such as fluorotelomer alcohols (FTOHs) well hydrochlorofluorocarbons (HFCs) other ozone-depleting chlorofluorocarbon (CFC) replacement compounds. Svalbard ice cores have been shown to provide valuable record long-range transport Arctic. This study uses 12.3 m core remote Lomonosovfonna cap on...
Abstract The fate of the West Antarctic Ice Sheet (WAIS) 1 is largest cause uncertainty in long-term sea-level projections. In last interglacial (LIG) around 125,000 years ago, data suggest that sea level was several metres higher than today 2–4 , and required a significant contribution from ice loss, with WAIS usually implicated. Antarctica Southern Ocean were warmer 5–8 by amounts comparable to those expected 2100 under moderate high future warming scenarios. However, direct evidence about...
Abstract Dissolved and particulate sodium, magnesium calcium are analyzed in ice cores to determine past changes sea extent, terrestrial dust variability atmospheric aerosol transport efficiency. They also used date if annual layers visible. Multiple methods have been developed analyze these important compounds cores. Continuous flow analysis (CFA) is implemented with instruments that sample the meltstream continuously. In this study, CFA ICP-MS (inductively coupled-plasma mass spectrometry)...
In this study, we present the age scales for three Antarctic Peninsula (AP) ice cores: Palmer, Rendezvous, and Jurassic. The cores are all intermediate-depth cores, in 133–141 m depth range. Non-sea-salt sulfate ([nssSO42−]) hydrogen peroxide (H2O2) display marked seasonal variability suitable annual-layer counting. Palmer core covers 390 years, 1621–2011 C.E., is one of oldest AP cores. Rendezvous Jurassic lower elevation high-snow accumulation sites therefore cover shorter intervals,...
The development of efficient sorbent materials for sulfur dioxide (SO
We report a series of six isoreticular metal–organic frameworks (MOFs) for selective gas adsorption, specifically adsorption CO<sub>2</sub> and C<sub>2</sub>H<sub>2</sub>.
C1–C4 perfluoroalkyl acids (PFAAs) are highly persistent chemicals that have been found in the environment. To date, much uncertainty still exists about their sources and fate. The importance of atmospheric degradation volatile precursors to PFAAs were investigated by studying distribution seasonal variation remote Arctic locations. measured surface snow on island Spitsbergen Norwegian during January–August 2019. Trifluoroacetic acid (TFA), perfluoropropanoic (PFPrA), perfluorobutanoic...
Abstract. We present an age model for the 651 m deep ice core from Skytrain Ice Rise, situated inland of Ronne Shelf, Antarctica. The top 2000 years have previously been dated using markers interpolated through annual layer counting. Below this, we align to AICC2012 tie points in and air phase, apply Paleochrono program obtain best fit glaciological constraints. In gas ties are made methane and, critical sections, δ18Oair; phase 10Be across Laschamps event chemistry related long-range dust...
The remote Antarctic continent, distant from human industrial activity, should be one of the last places on Earth to capture Anthropogenic change. Hence, stratigraphic evidence pollution and nuclear activity in provides proof global nature Anthropocene epoch. We propose an Peninsula ice core candidate for Global boundary Stratotype Section Point (GSSP) onset Anthropocene. Palmer captures first spheroidal carbonaceous fly ash particles (SCPs), resulting high temperature combustion deposited...
Low-concentration insoluble microparticles that are preserved in ice cores offer valuable information for reconstructing past environmental changes. However, their low concentrations and limited sample availability present challenges extraction recovery while ensuring representativeness of results. The analysis using continuous flow systems generates large volumes excess meltwater as a by-product with the potential to improve acquisition targeted low-concentration microparticle samples....
Recent work demonstrates that the Skytrain ice core, retrieved from Weddell Sea Embayment in West Antarctica, can inform us about (in-)stability of Ronne-Filcher Ice Shelf and Antarctic Sheet past warm periods. Here we switch our focus to Last Glacial period at describe &#8220;Calcium Conundrum&#8221;, which may be linked sheet dynamics.&#160;The calcium record diverges those other cores across several distinct time intervals. The increased Ca is not accompanied by a...
Fracture-induced ice shelf instability is a critical contributor to uncertainties in sea level projections, which are central global flood mitigation planning. While the occurrence of fracturing at stress thresholds well-documented, mechanisms governing fracture timing, rate, and orientation remain poorly understood, particularly across shelves with varying properties provenance. Observations on Brunt Ice Shelf reveal unique behaviours, where rifts deviate from their stress-predicted...
Abstract. A new ice core was drilled in West Antarctica on Skytrain Ice Rise field season 2018/2019. This 651 m is one of the main targets WACSWAIN (WArm Climate Stability Antarctic sheet last INterglacial) project. present-day accumulation rate 13.5 cm w.e. yr−1 derived. Although project mainly aims to investigate interglacial (115–130 ka), a robust chronology period covering recent past needed constrain age models for deepest ice. Additionally, this time important understanding current...
Designing porous materials which can selectively adsorb CO2 or CH4 is an important environmental and industrial goal requires understanding of the host–guest interactions involved at atomic scale. Metal–organic polyhedra (MOPs) showing permanent porosity upon desolvation are rarely observed. We report a family MOPs (Cu-1a, Cu-1b, Cu-2), derive their from cavities between packed cages rather than within polyhedra. Thus, for Cu-1a, void fraction outside totals 56% with only 2% within. The...
Biomass burning plays an important role in climate-forcing and atmospheric chemistry. The drivers of fire activity over the past two centuries, however, are hotly debated fueled by poor constraints on magnitude trends preindustrial regimes. As a powerful tracer biomass burning, reconstructions paleoatmospheric carbon monoxide (CO) can provide valuable information evolution across to industrial transition. Here too, significant disagreements between existing CO records currently allow for...
Per- and polyfluoroalkyl substances (PFAS) are persistent anthropogenic contaminants, some of which toxic bioaccumulative. Perfluoroalkyl carboxylic acids (PFCAs) perfluoroalkyl sulfonic (PFSAs) can form during the atmospheric degradation precursors such as fluorotelomer alcohols (FTOHs), N-alkylated perfluoroalkane sulfonamides (FASAs), hydrofluorocarbons (HFCs). Since PFCAs PFSAs will readily undergo wet deposition, snow ice cores useful for studying PFAS in Arctic atmosphere. In this...
Abstract. For many ice core related scientific questions, like the analysis of fast changing climate signals, depth resolution conventional methods is not sufficient. In this study we present a setup Laser Ablation Inductively Coupled Plasma – Mass Spectrometry (LA-ICP-MS) for high glacier impurity to sub-millimetre scale. This enables chemical ~ 80 μm while consuming only minimal amounts ice. The system was used simultaneous sodium, magnesium and aluminium incorporated in structure. first...
Abstract. Conventional methods of inorganic impurity analysis do not provide high enough depth resolution for many scientific questions in ice core science. In this study, we present a setup laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) high-resolution glacier to the sub-millimetre scale. This enables chemical ∼182 µm while consuming only very small amounts ice. The system performs simultaneous sodium, magnesium and aluminium incorporated matrix. case study within...
In this study, we used the stable water isotope record (δ18O) from an ice core drilled in Palmer Land, southern Antarctic Peninsula (AP). Utilizing δ18O identified two climate regimes during satellite era. During 1979–1998 positive interdecadal Pacific oscillation (IPO) phase, a low-pressure system north of Weddell Sea drove southeasterly winds that are associated with increase warm air mass intrusion onto Larsen shelves, which melted and decreased sea concentration Sea/increase...
Abstract. We present an age model for the 651 m deep Skytrain Ice Rise ice core. The top 2000 years have previously been dated using markers interpolated through annual layer counting. Below this, we align core to AICC2012 tie points in and air phase, apply Paleochrono program obtain best fit glaciological constraints. In gas ties are made methane and, critical sections, δ18Oair; phase 10Be across Laschamps Event, chemistry related long-range dust transport deposition. This strategy provides...
Antarctic ice core records covering the last glacial cycle generally reflect a common climate and environmental history overlain with local influences such as changes in altitude, atmospheric circulation, dust sources, or regional sea extent. Here we investigate from 651 m Skytrain Ice Rise core, drilled within WACSWAIN (WArm Climate Stability of West sheet Interglacial) project. This rise is adjacent to Ronne Shelf WAIS, extends into interglacial period, including continuous record cycle....