A5013888944- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Hydrocarbon exploration and reservoir analysis
- Vehicle emissions and performance
- Energy, Environment, and Transportation Policies
- Global Energy and Sustainability Research
- Gaussian Processes and Bayesian Inference
- Inorganic Fluorides and Related Compounds
- Dendrimers and Hyperbranched Polymers
- Air Quality and Health Impacts
- Advanced biosensing and bioanalysis techniques
- RNA Interference and Gene Delivery
- Ionosphere and magnetosphere dynamics
University of Bristol
2020-2022
University of East Anglia
2011-2014
National Centre for Atmospheric Science
2011
University of York
2006
Abstract. National greenhouse gas inventories (GHGIs) are submitted annually to the United Nations Framework Convention on Climate Change (UNFCCC). They estimated in compliance with Intergovernmental Panel (IPCC) methodological guidance using activity data, emission factors and facility-level measurements. For some sources, outputs from these calculations very uncertain. Inverse modelling techniques that use high-quality, long-term measurements of atmospheric gases have been developed...
Functionalisation of PAMAM dendrimers with a small number thiol groups makes them good ligands for CdSe/ZnSe nanoparticles; the particles coated thiolated have cell permeability and are potent transfection agents.
Abstract. Perfluorocarbons (PFCs) are amongst the most potent greenhouse gases listed under United Nations Framework Convention on Climate Change (UNFCCC). With atmospheric lifetimes order of thousands to tens years, PFC emissions represent a permanent alteration global atmosphere human timescales. While industries responsible for vast majority these – aluminium smelting and semi-conductor manufacturing have made efficiency improvements introduced abatement measures, mean mole fractions...
Abstract. Short-lived organic brominated compounds make up a significant part of the bromine budget in atmosphere. Emissions these are highly variable and there limited measurements, particularly extra-tropical upper troposphere/lower stratosphere tropical troposphere. Measurements five very short-lived bromomethanes (VSLB) were made air samples collected on CARIBIC project aircraft over three flight routes; Germany to Venezuela/Columbia during 2009–2011, South Africa 2010 2011...
As part of the effort to understand volcanic plume composition and chemistry during eruption Icelandic volcano Eyjafjallajkull, CARIBIC atmospheric observatory was deployed for three special science flights aboard a Lufthansa passenger aircraft. Measurements made these included collection whole air samples, which were analyzed non-methane hydrocarbons (NMHCs). Hydrocarbon concentrations in samples found be reduced levels below background, with relative depletions characteristic reaction...
Abstract. We present a method for estimating fossil fuel methane emissions using observations of and ethane, accounting uncertainty in their emission ratio. The ethane:methane ratio is incorporated as spatially temporally variable parameter Bayesian model, with its own prior distribution uncertainty. find that an mitigates bias from fixed, potentially incorrect this propagated into posterior estimates emissions. A synthetic data test used to show the impact assuming demonstrate how our model...
Abstract. Perfluorocarbons (PFCs) are amongst the most potent greenhouse gases listed under United Nations Framework Convention on Climate Change (UNFCCC). With atmospheric lifetimes in order of thousands to tens years, PFC emissions represent a permanent alteration global atmosphere human timescales. While industries responsible for vast majority these – aluminium smelting and semi-conductor manufacturing have made efficiency improvements introduced abatement measures, mean mole fractions...
Abstract. Short-lived organic brominated compounds make up a significant part (~20%) of the bromine budget in atmosphere. Emissions these are highly variable and there limited measurements, particularly extra-tropical upper troposphere/lower stratosphere tropical troposphere. Measurements five short-lived bromomethanes (VSLB) were made air samples collected on CARIBIC project aircraft over three flight routes; Germany to Venezuela/Columbia during 2009–2011, South Africa 2010 2011...
Abstract. National Greenhouse Gas Inventories (GHGI) are submitted annually to the United Nations Framework Convention on Climate Change (UNFCCC). They estimated in compliance with Intergovernmental Panel (IPCC) methodological guidance using activity data, emission factors and facility-level measurements. For some sources, outputs from these calculations very uncertain. Inverse modelling techniques that use high-quality, long-term measurements of atmospheric gases have been developed provide...
<p align="justify">Verification of the nationally reported greenhouse gas (GHG) inventories using inverse modelling and atmospheric observations is considered to be best practice by United Nations Framework Convention on Climate Change (UNFCCC). It allows for an independent assessment GHG emissions a comprehensively different approach inventory methods. Significant differences in estimated two approaches are means identifying areas worthy further...
<p>Methane is an important greenhouse gas with a range of anthropogenic sources, including livestock farming and fossil fuel production. It that methane emissions can be correctly attributed to their source, aid climate change policy mitigation efforts. For source attribution, many ‘top-down’ models atmospheric use spatial maps sources from inventory data coupled transport model. However, this cause difficulties if are co-located or there uncertainty...
Abstract. We present a method for estimating fossil fuel methane emissions using observations of and ethane, accounting uncertainty in their emission ratio. The ethane:methane ratio is incorporated as variable parameter Bayesian model, with its own prior distribution uncertainty. find that an mitigates bias from fixed, potentially incorrect this propagated into posterior estimates emissions. A synthetic data test used to show the impact assuming demonstrate how our model can better quantify...