A5011376769- Atmospheric and Environmental Gas Dynamics
- Atmospheric chemistry and aerosols
- Oil, Gas, and Environmental Issues
- Fatigue and fracture mechanics
- Oil Spill Detection and Mitigation
- Meteorological Phenomena and Simulations
- Wind and Air Flow Studies
- Structural Integrity and Reliability Analysis
- Hydrocarbon exploration and reservoir analysis
- Risk and Safety Analysis
- Material Properties and Failure Mechanisms
- Atmospheric Ozone and Climate
- CO2 Sequestration and Geologic Interactions
- Ultrasonics and Acoustic Wave Propagation
- Vehicle emissions and performance
- Air Quality Monitoring and Forecasting
- Climate variability and models
- Iron Metabolism and Disorders
- Concrete Corrosion and Durability
- Advanced Aircraft Design and Technologies
- Reservoir Engineering and Simulation Methods
- Hydrogen embrittlement and corrosion behaviors in metals
- Methane Hydrates and Related Phenomena
- Air Quality and Health Impacts
- Fire effects on concrete materials
University of Manchester
2019-2024
National Centre for Atmospheric Science
2020-2022
Tata Steel (United Kingdom)
2002
British Steel (United Kingdom)
1990
Abstract Methane (CH 4 ) is a potent greenhouse gas with warming potential 84 times that of carbon dioxide (CO 2 over 20‐year period. Atmospheric CH concentrations have been rising since the nineteenth century but cause large increases post‐2007 disputed. Tropical wetlands are thought to account for ∼20% global emissions, African tropical understudied and their contribution uncertain. In this work, we use first airborne measurements sampled three wetland areas in Zambia derive emission...
Abstract. Emissions of methane (CH4) from offshore oil and gas installations are poorly ground-truthed, quantification relies heavily on the use emission factors activity data. As part United Nations Climate & Clean Air Coalition (UN CCAC) objective to study reduce short-lived climate pollutants (SLCPs), a Twin Otter aircraft was used survey CH4 emissions UK Dutch installations. The aims surveys were (i) identify that significant emitters, (ii) separate installation other using...
Abstract. The oil and gas (O&G) sector is a significant source of methane (CH4) emissions. Quantifying these emissions remains challenging, with many studies highlighting discrepancies between measurements inventory-based estimates. In this study, we present CH4 emission fluxes from 21 offshore O&G facilities collected in 10 fields over two regions the Norwegian continental shelf 2019. Emissions derived during 13 aircraft surveys were found to range 2.6 1200 t yr−1 (with mean...
Abstract. The North Sea is Europe's key oil and gas (O&G) basin with the output currently meeting 3 %–4 % of global supply. Despite this, there are few observational constraints on nature atmospheric emissions from this region, most information derived bottom-up inventory estimates. This study reports airborne measurements volatile organic compounds (VOCs) emitted O&G-producing regions in Sea. VOC source emission signatures for primary extraction products offshore fields...
Abstract. Atmospheric methane (CH4) concentrations have more than doubled since the beginning of industrial age, making CH4 second most important anthropogenic greenhouse gas after carbon dioxide (CO2). The oil and sector represent one major emitters as it is estimated to account for 22 % global emissions. An airborne field campaign was conducted in April–May 2019 study emissions from offshore facilities Southern North Sea with aim derive emission estimates using a top-down (measurement-led)...
Abstract. Atmospheric methane (CH4) concentrations have more than doubled since the beginning of industrial age, making CH4 second most important anthropogenic greenhouse gas after carbon dioxide (CO2). The oil and sector represents one major emitters as it is estimated to account for 22 % global emissions. An airborne field campaign was conducted in April–May 2019 study emissions from offshore facilities southern North Sea with aim deriving emission estimates using a top-down...
We report methane isotopologue data from aircraft and ground measurements in Africa South America. Aircraft campaigns sampled strong fluxes over tropical papyrus wetlands the Nile, Congo Zambezi basins, herbaceous Bolivian southern Amazonia, fires African woodland, cropland savannah grassland. Measured δ13CCH4 isotopic signatures were range -55 to -49‰ for emissions equatorial Nile agricultural areas, but widely -60 ± 1‰ Upper wetlands. Very similar measured Amazonian of NE Bolivia (around...
We report a 24-month statistical baseline climatology for continuously-measured atmospheric carbon dioxide (CO2) and methane (CH4) mixing ratios linked to surface meteorology as part of wider environmental baselining project tasked with understanding pre-existing local conditions prior shale gas exploration in the United Kingdom. The was designed statistically characterise high-precision measurements composition gathered over two full years (between February 1st 2016 January 31st 2018) at...
We report measurements of methane (CH4) mixing ratios and emission fluxes derived from sampling at a monitoring station an exploratory shale gas extraction facility in Lancashire, England. Elevated ambient CH4 were recorded January 2019 during period cold-venting associated with nitrogen lift process the facility. These processes are used to clear well stimulate flow natural target shale. Estimates flux event made using three independent modeling approaches: Gaussian plume dispersion...
Abstract. The oil and gas (O&G) sector is a significant source of methane (CH4) emissions. Quantifying these emissions remains challenging, with many studies highlighting discrepancies between measurements inventory-based estimates. In this study, we present CH4 emission fluxes from 21 offshore O&G facilities collected in 10 fields over two regions the Norwegian Continental Shelf 2019. Emissions derived during 13 aircraft surveys were found to range 2.6 1200 t year−1 (with...
Abstract An extensive group-sponsored research program has been carried out within the UK, which, supplemented by additional work British Steel, was designed to study structural significance of local brittle zones. Charpy impact, CTOD and wide plate tests have examined in order compare contrast their fracture behavior under similar conditions. In permit this comparison, two welding conditions were studied giving nominally 30 10 percent coarse-grained HAZ through thickness a 50-mm-thick...
AbstractAn extensive research programme, sponsored by several industrial companies, has been carried out to investigate the factors controlling observed toughness properties of heat affected zones (HAZs) and, specifically, behaviour large structures. Normalised and high strength steel grades were tested using conventional crack tip opening displacement wide plate methods. Fracture initiation in both steels was found be very sensitive fatigue location. Crack arrest occurred fine grain HAZs...
Abstract. Emissions of methane (CH4) from offshore oil and gas installations are poorly ground-truthed quantification relies heavily on the use emission factors activity data. As part United Nations Climate Clean Air Coalition (UN CCAC) objective to study reduce short-lived climate pollutants (SLCP) a Twin Otter aircraft was used survey CH4 emissions UK Dutch installations. The aims surveys were i) identify that significant emitters, ii) separate installation other using carbon-isotopic...
Abstract Major earthquakes occurring in Northridge, USA January, 1994 and Kobe, Japan, January 1995 focused attention on the seismic performance of steel structural sections, particularly thick‐flange ‘jumbo’ columns used conjunction with welded beam–column connections. Subsequent investigations identified joint design, poor fabrication, low weld metal toughness as significant factors instances cracking which occurred around special moment‐resistant frame (SMRF) The importance high‐quality...
<p>Airborne measurements of methane (CH<sub>4</sub>) were recorded over three major wetland areas in Zambia February 2019 during the MOYA (Methane Observations and Yearly Assessments) ZWAMPS field campaign. Enhancements up to 600 ppb CH<sub>4</sub> measured Bangweulu (11°36’ S, 30°05’ E), Kafue (15°43’ 27°17’ Lukanga...