Bryce F. J. Kelly
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View article: Groundwater δ2H/δ18O isoscapes for New South Wales (Australia)
Groundwater δ2H/δ18O isoscapes for New South Wales (Australia) Open
Study region: New South Wales (NSW), Australia. Study focus: Stable isotope ratios of water (δ2H and δ18O) can be used to trace hydrological processes, providing information on aquifer dynamics including groundwater recharge, flow and mixi…
View article: Methane emissions from Australia estimated by inverse analysis using in-situ and Satellite (GOSAT) atmospheric observations
Methane emissions from Australia estimated by inverse analysis using in-situ and Satellite (GOSAT) atmospheric observations Open
Australia has significant sources of atmospheric methane (CH₄), driven by extensive coal and natural gas production, livestock, and large-scale fires. Accurate quantification and characterization of CH₄ emissions are critical for effective…
View article: Insights into Elevated Methane Emissions from an Australian Open-Cut Coal Mine Using Two Independent Airborne Techniques
Insights into Elevated Methane Emissions from an Australian Open-Cut Coal Mine Using Two Independent Airborne Techniques Open
View article: Groundwater Δ2h/Δ18o Isoscapes for New South Wales (Australia)
Groundwater Δ2h/Δ18o Isoscapes for New South Wales (Australia) Open
View article: BBCMap 2023: Assessing methane emissions from open-cut and underground coal mining in eastern Australia
BBCMap 2023: Assessing methane emissions from open-cut and underground coal mining in eastern Australia Open
Methane (CH4) is the second most important anthropogenic greenhouse gas (GHG), and its emissions reduction has been identified as an essential mitigation target to slow down climate change. According to inventories, fossil fuel production …
View article: Tracing 36Cl in river water of Eastern Australia
Tracing 36Cl in river water of Eastern Australia Open
Chlorine-36, generally expressed as a ratio against stable chlorine (36Cl/Cl x1015), has a half-life of 301 kyr, thus it is a useful tracer for estimating residence time of old groundwater between 50 kyr - 1 Myr. An underutilised use of 36…
View article: Atmospheric methane isotopes identify inventory knowledge gaps in the Surat Basin, Australia, coal seam gas and agricultural regions
Atmospheric methane isotopes identify inventory knowledge gaps in the Surat Basin, Australia, coal seam gas and agricultural regions Open
In-flight measurements of atmospheric methane (CH4(a)) and mass balance flux quantification studies can assist with verification and improvement in the UNFCCC National Inventory reported CH4 emissions. In the Surat Basin gas fields, Queens…
View article: Reply on RC1
Reply on RC1 Open
Abstract. In-flight measurements of atmospheric methane (CH4(a)) and mass balance flux quantification studies can assist with verification and improvement in the UNFCCC National Inventory reported C…
View article: Reply on RC2
Reply on RC2 Open
Abstract. In-flight measurements of atmospheric methane (CH4(a)) and mass balance flux quantification studies can assist with verification and improvement in the UNFCCC National Inventory reported C…
View article: Comment on acp-2022-552
Comment on acp-2022-552 Open
Abstract. In-flight measurements of atmospheric methane (CH4(a)) and mass balance flux quantification studies can assist with verification and improvement in the UNFCCC National Inventory reported C…
View article: Comment on acp-2022-552
Comment on acp-2022-552 Open
Abstract. In-flight measurements of atmospheric methane (CH4(a)) and mass balance flux quantification studies can assist with verification and improvement in the UNFCCC National Inventory reported C…
View article: Atmospheric methane isotopes identify inventory knowledge gaps in the Surat Basin, Australia, coal seam gas and agricultural regions
Atmospheric methane isotopes identify inventory knowledge gaps in the Surat Basin, Australia, coal seam gas and agricultural regions Open
In-flight measurements of atmospheric methane (CH4(a)) and mass balance flux quantification studies can assist with verification and improvement of UNFCCC National Inventory reported CH4 emissions. However, attributing CH4(a) mole fraction…
View article: A nation that rebuilds its soils rebuilds itself- an engineer's perspective
A nation that rebuilds its soils rebuilds itself- an engineer's perspective Open
Nations can build and rebuild degraded soils to help address climate change and potentially improve the nutritional content of food if we change policies that allow the addition of safe mineral and organic wastes to soil. We present a fram…
View article: Isotopic evidence for nitrate sources and controls on denitrification in groundwater beneath an irrigated agricultural district
Isotopic evidence for nitrate sources and controls on denitrification in groundwater beneath an irrigated agricultural district Open
The application of N fertilisers to enhance crop yield is common throughout the world. Many crops have historically been, or are still, fertilised with N in excess of the crop requirements. A portion of the excess N is transported into und…
View article: Coal seam gas industry methane emissions in the Surat Basin, Australia: comparing airborne measurements with inventories
Coal seam gas industry methane emissions in the Surat Basin, Australia: comparing airborne measurements with inventories Open
Coal seam gas (CSG) accounts for about one-quarter of natural gas production in Australia and rapidly increasing amounts globally. This is the first study worldwide using airborne measurement techniques to quantify methane (CH 4 ) emission…
View article: Isotopic signatures of major methane sources in the coal seam gas fields and adjacent agricultural districts, Queensland, Australia
Isotopic signatures of major methane sources in the coal seam gas fields and adjacent agricultural districts, Queensland, Australia Open
In regions where there are multiple sources of methane (CH4) in close proximity, it can be difficult to apportion the CH4 measured in the atmosphere to the appropriate sources. In the Surat Basin, Queensland, Australia, coal seam gas (CSG)…
View article: Reply on RC1
Reply on RC1 Open
Abstract. In regions where there are multiple sources of methane (CH4) in close proximity, it can be difficult to apportion the CH4 measured in the atmosphere to the appropri…
View article: Reply on RC2
Reply on RC2 Open
Abstract. In regions where there are multiple sources of methane (CH4) in close proximity, it can be difficult to apportion the CH4 measured in the atmosphere to the appropri…
View article: Comment on acp-2021-76
Comment on acp-2021-76 Open
Abstract. In regions where there are multiple sources of methane (CH4) in close proximity, it can be difficult to apportion the CH4 measured in the atmosphere to the appropri…
View article: Isotopic Signatures of Major Methane Sources in the Coal Seam GasFields and Adjacent Agricultural Districts, Queensland, Australia
Isotopic Signatures of Major Methane Sources in the Coal Seam GasFields and Adjacent Agricultural Districts, Queensland, Australia Open
In regions where there are multiple sources of methane (CH4) in close proximity, it can be difficult to apportion the CH4 measured in the atmosphere to the appropriate sources. In the Surat Basin, Queensland, Australia, coal seam gas (CSG)…
View article: Hydrochemical apportioning of irrigation groundwater sources in an alluvial aquifer
Hydrochemical apportioning of irrigation groundwater sources in an alluvial aquifer Open
River floodplains sustain irrigated agriculture worldwide. Despite generalised groundwater level falls, limited hard data are available to apportion groundwater sources in many irrigated regions. In this paper, we propose a workflow based …
View article: N <sub>2</sub> O isotopocule measurements using laser spectroscopy: analyzer characterization and intercomparison
N <sub>2</sub> O isotopocule measurements using laser spectroscopy: analyzer characterization and intercomparison Open
For the past two decades, the measurement of nitrous oxide (N2O) isotopocules – isotopically substituted molecules 14N15N16O, 15N14N16O and 14N14N18O of the main isotopic species 14N14N16O – has been a promising technique for understanding…
View article: N2O isotope research: development of reference materials and metrological characterization of OIRS analyzers within the SIRS project
N2O isotope research: development of reference materials and metrological characterization of OIRS analyzers within the SIRS project Open
<p>Measurements of the four most abundant stable isotopocules of N<sub>2</sub>O (<sup>14</sup>N<sup>14</sup>N<sup>16</sup>O, <sup>15</sup>N<sup>14</sup>N<sup&…
View article: Improved isotopic characterisation of methane emissions from biomass burning
Improved isotopic characterisation of methane emissions from biomass burning Open
<p>Emissions of methane from combustion sources are typically distinguished by being enriched in <sup>13</sup>C and <sup>2</sup>H, causing a large isotopic shift to atmospheric methane δ<sup>13&…
View article: Gradient Boosting for Forecasting Groundwater Levels from Sparse Data Sets in an Alluvial Aquifer Subjected to Heavy Pumping and Flooding
Gradient Boosting for Forecasting Groundwater Levels from Sparse Data Sets in an Alluvial Aquifer Subjected to Heavy Pumping and Flooding Open
<p>In most catchments, there is usually inadequate information to build an accurate three-dimensional representation of the sediment type and associated hydraulic properties. This makes it challenging to build a physics-based groundw…
View article: Methane Source Attribution Challenges in the Surat Basin, Australia
Methane Source Attribution Challenges in the Surat Basin, Australia Open
<p>One of the case study sites for the Climate and Clean Air Coalition (CCAC) Methane Science Studies is the coal seam gas (CSG) field in the Surat Basin, Queensland, Australia, where there are over 6000 CSG wells and associated gas …
View article: Urban Methane Surveys &#8211; A Case Study Where Isotope Measurements Guided Source Attribution
Urban Methane Surveys – A Case Study Where Isotope Measurements Guided Source Attribution Open
<p>Methane (CH<sub>4</sub>) is the second most important anthropogenic greenhouse gas after carbon dioxide (CO<sub>2</sub>) in the atmosphere<sup>1</sup>. Human activities are estimated to contribu…
View article: Methane Mitigation: Methods to Reduce Emissions, on the Path to the Paris Agreement
Methane Mitigation: Methods to Reduce Emissions, on the Path to the Paris Agreement Open
The atmospheric methane burden is increasing rapidly, contrary to pathways compatible with the goals of the 2015 United Nations Framework Convention on Climate Change Paris Agreement. Urgent action is required to bring methane back to a pa…
View article: N <sub>2</sub> O isotopocule measurements using laser spectroscopy: analyzer characterization and intercomparison
N <sub>2</sub> O isotopocule measurements using laser spectroscopy: analyzer characterization and intercomparison Open
For the past two decades, the measurement of N2O isotopocules – isotopically substituted molecules 14N15N16O, 15N14N16O and 14N14N18O of the main isotopic species 14N14N16O – has been a promising technique for understanding N2O production …
View article: Constraining source attribution of methane in an alluvial aquifer with multiple recharge pathways
Constraining source attribution of methane in an alluvial aquifer with multiple recharge pathways Open
Identifying the source of methane (CH4) in groundwater is often complicated due to various production, degradation and migration pathways, particularly in settings where there are multiple groundwater recharge pathways. This stu…