S. M. Murphy
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View article: Impact of Cable Structure on Distributed Fiber Optic Sensing
Impact of Cable Structure on Distributed Fiber Optic Sensing Open
Distributed Fiber Optic Sensing (DFOS) along submarine cables is a promising technology for monitoring geologic hazards and assessing the structural integrity of telecommunication infrastructures, however a key challenge remains in underst…
View article: Multiscale Secondary Microseism Propagation Analysis Using Full Waveform Modelling and DAS Observations offshore Catania, Sicily
Multiscale Secondary Microseism Propagation Analysis Using Full Waveform Modelling and DAS Observations offshore Catania, Sicily Open
Ocean generated low-frequency seismic noise signals called microseisms are linked to the ocean environment, the subsurface and the atmosphere. The energy associated with microseisms is closely related to ocean wave amplitude, globally and …
View article: Understanding the mechanism and importance of brown carbon bleaching across the visible spectrum in biomass burning plumes from the WE-CAN campaign
Understanding the mechanism and importance of brown carbon bleaching across the visible spectrum in biomass burning plumes from the WE-CAN campaign Open
Aerosol absorption of visible light has an important impact on global radiative forcing. Wildfires are one of the major sources of light-absorbing aerosol, but there remains significant uncertainty about the magnitude, wavelength dependenc…
View article: Secondary microseism event characterisation offshore Catania using DAS Data
Secondary microseism event characterisation offshore Catania using DAS Data Open
The continuous Earth ground vibrations known as microseisms that are produced by wind driven surface gravity waves dominate the seismic noise spectrum and are closely tied to storm activity. Distributed Acoustic Sensing (DAS) technology ex…
View article: Assessing Cable Sensitivity in Distributed Fibre Optic Sensing Offshore Catania
Assessing Cable Sensitivity in Distributed Fibre Optic Sensing Offshore Catania Open
Distributed Fibre Optic Sensing (DFOS) is becoming widespread in submarine geosciences as it enables quasi-continuous sensing of physical changes along fibres in submarine cables. These cables are made with specific architectures and mater…
View article: EU-financed transnational access in Geo-INQUIRE: an opportunity for researchers to develop leading-edge science at selected test-beds and research facilities across Europe.
EU-financed transnational access in Geo-INQUIRE: an opportunity for researchers to develop leading-edge science at selected test-beds and research facilities across Europe. Open
The Geo-INQUIRE (Geosphere INfrastructure for QUestions into Integrated REsearch) project, supported by the Horizon Europe Programme, is aimed at enhancing services to make data and high-level products accessible to the broad Geoscience sc…
View article: Comment on egusphere-2023-3114
Comment on egusphere-2023-3114 Open
Abstract. Aerosol absorption of visible light has an important impact on global radiative forcing. Wildfires are one of the major sources of light-absorbing aerosol, but there remains significant uncertainty about the magnitude, wavelength…
View article: Understanding Absorption by Black Versus Brown Carbon in Biomass Burning Plumes from the WE-CAN Campaign
Understanding Absorption by Black Versus Brown Carbon in Biomass Burning Plumes from the WE-CAN Campaign Open
Aerosol absorption of visible light has an important impact on global radiative forcing. Wildfires are one of the major sources of light-absorbing aerosol, but there remains significant uncertainty about the magnitude, wavelength dependenc…
View article: Drive-Around Surveys for Detection and Quantification of Methane Leaks Estimating Emission Rates from Drive-Around Surveys
Drive-Around Surveys for Detection and Quantification of Methane Leaks Estimating Emission Rates from Drive-Around Surveys Open
Current MMRV solutions have the potential to quickly survey entire oilfields or detect methane leaks down to the component level, but also carry high price tags or, indirectly, high implementation costs. The Stanford/EDF Mobile Monitoring …
View article: Simulations of winter ozone in the Upper Green River basin, Wyoming, using WRF-Chem
Simulations of winter ozone in the Upper Green River basin, Wyoming, using WRF-Chem Open
In the Upper Green River basin (UGRB) of Wyoming and the Uintah Basin of Utah, strong wintertime ozone (O3) formation episodes leading to O3 mixing ratios occasionally exceeding 70 parts per billion (ppb) have been observed over the last 2…
View article: Characterizing methane emissions from orphaned coalbed methane wells in the powder river basin
Characterizing methane emissions from orphaned coalbed methane wells in the powder river basin Open
In 2018, the U.S. EPA Greenhouse Gas Inventory (GHGI) began including methane emissions from abandoned oil and gas (AOG) wells and estimated that they may constitute up to 4% of total methane emissions from the oil and gas sector. Several …
View article: The Transnational access and training in the Geo-INQUIRE EU-project, an opportunity for researchers to develop leading-edge science at selected facilities and test-beds across Europe
The Transnational access and training in the Geo-INQUIRE EU-project, an opportunity for researchers to develop leading-edge science at selected facilities and test-beds across Europe Open
The Geo-INQUIRE (Geosphere INfrastructure for QUestions into Integrated REsearch) project, supported by the Horizon Europe Programme, is aimed at enhancing services to make data and high-level products accessible to the broad Geoscience sc…
View article: Abnormal tank emissions in the Permian Basin identified using ethane to methane ratios
Abnormal tank emissions in the Permian Basin identified using ethane to methane ratios Open
There has been increasing interest in quantifying methane (CH4) emissions from a view toward mitigation. Accordingly, ground-based sampling of oil and gas production sites in the Permian Basin was carried out in January and October 2020. M…
View article: Comments on acp-2022-456
Comments on acp-2022-456 Open
Abstract. In both the Upper Green River Basin (UGRB) of Wyoming and the Uintah Basin of Utah, strong wintertime ozone (O3) formation episodes leading to O3 concentrations exceeding the 8-hour O3 NAAQS (70 ppb) have been observed over the l…
View article: Examination of brown carbon absorption from wildfires in the western US during the WE-CAN study
Examination of brown carbon absorption from wildfires in the western US during the WE-CAN study Open
Light absorbing organic carbon, or brown carbon (BrC), can be a significant contributor to the visible light absorption budget. However, the sources of BrC and the contributions of BrC to light absorption are not well understood. Biomass b…
View article: Simulations of winter ozone in the Upper Green River Basin, Wyoming, using WRF-Chem
Simulations of winter ozone in the Upper Green River Basin, Wyoming, using WRF-Chem Open
In both the Upper Green River Basin (UGRB) of Wyoming and the Uintah Basin of Utah, strong wintertime ozone (O3) formation episodes leading to O3 concentrations exceeding the 8-hour O3 NAAQS (70 ppb) have been observed over the last two de…
View article: Strain evolution on a submarine cable during the 2021 Etna eruption
Strain evolution on a submarine cable during the 2021 Etna eruption Open
<p>On the 13th December 2020, a Strombolian eruption occurred on Mount Etna. We present a study of the temporal and spatial variation of strain measured at the underwater base of volcano during this event.&#160;</p><p>…
View article: Monitoring a submarine strike-slip fault, using a fiber optic strain cable
Monitoring a submarine strike-slip fault, using a fiber optic strain cable Open
<p>The goal of the ERC (European Research Council) funded project - FOCUS is to apply laser reflectometry on submarine fiber optic cables to detect deformation at the seafloor in real time using BOTDR (Brillouin Optical Time Domain R…
View article: Biomass Burning Smoke and Its Influence on Clouds Over the Western U. S.
Biomass Burning Smoke and Its Influence on Clouds Over the Western U. S. Open
Small cumulus clouds over the western United States were measured via airborne instruments during the wildfire season in summer of 2018. Statistics of the sampled clouds are presented and compared to smoke aerosol properties. Cloud droplet…
View article: Investigating Carbonaceous Aerosol and Its Absorption Properties From Fires in the Western United States (WE‐CAN) and Southern Africa (ORACLES and CLARIFY)
Investigating Carbonaceous Aerosol and Its Absorption Properties From Fires in the Western United States (WE‐CAN) and Southern Africa (ORACLES and CLARIFY) Open
Biomass burning (BB) produces large quantities of carbonaceous aerosol (black carbon and organic aerosol, BC and OA, respectively), which significantly degrade air quality and impact climate. BC absorbs radiation, warming the atmosphere, w…
View article: Summary of research paper published in Nature Communications titled: Biomass burning aerosols in most climate models are too absorbing
Summary of research paper published in Nature Communications titled: Biomass burning aerosols in most climate models are too absorbing Open
In a recent paper published in the high-impact factor journal Nature Communications, data collected at the Welgegund atmospheric monitoring station was one of 12 observational datasets utilised in a study to quantify the uncertainty in the…
View article: A Multi-Year Data Set on Aerosol-Cloud-Precipitation-Meteorology Interactions for Marine Stratocumulus Clouds
A Multi-Year Data Set on Aerosol-Cloud-Precipitation-Meteorology Interactions for Marine Stratocumulus Clouds Open
Airborne data of meteorology, aerosol, and cloud properties that have been harmonized from nine field campaigns during May-September periods between 2005 and 2021 off the California coast. A consistent set of instruments were deployed on t…
View article: Quantification of organic aerosol and brown carbon evolution in fresh wildfire plumes
Quantification of organic aerosol and brown carbon evolution in fresh wildfire plumes Open
Significance Wildfire emissions in the western United States have had increasingly larger impacts on air quality, health, and climate forcing in recent decades. However, our understanding of how wildfire plume composition evolves remains i…
View article: Constraining the accuracy of flux estimates using OTM 33A
Constraining the accuracy of flux estimates using OTM 33A Open
Other Test Method 33A (OTM 33A) is a near-source flux measurement method developed by the Environmental Protection Agency (EPA) primarily used to locate and estimate emission fluxes of methane from oil and gas (O&G) production faciliti…
View article: Constraining the Accuracy of Flux Estimates Using OTM 33A
Constraining the Accuracy of Flux Estimates Using OTM 33A Open
Other Test Method 33A (OTM 33A) is a near-source flux measurement method developed by the Environmental Protection Agency (EPA) primarily used to locate and estimate emission fluxes of methane from oil and gas (O&G) production faciliti…
View article: A novel approach to calibrating a photoacoustic absorption spectrometer using polydisperse absorbing aerosol
A novel approach to calibrating a photoacoustic absorption spectrometer using polydisperse absorbing aerosol Open
A new technique for calibrating photoacoustic aerosol absorption spectrometers with multiple laser passes in the acoustic cavity (multi-pass PAS) has been developed utilizing polydisperse and highly absorbing aerosol. This is the first cal…