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Keywords: Methane
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Journal Articles
Elementa: Science of the Anthropocene (2021) 9 (1): 00136.
Published: 18 June 2021
... fraction trends of methane and volatile organic compounds (VOCs). Elevated methane and propane mole fractions and low values (<1) in the ratio of i-pentane to n-pentane at BAO were found to be associated with flow patterns that transport air from the northeast (NE) to east (E) sector to the site...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2021) 9 (1): 00143.
Published: 09 June 2021
... are conducted by commercial providers, there has been little publicly available data documenting characteristics of the underlying methane (CH 4 ) plumes that are the core features measured in ALD surveys. Here, we document key features of CH 4 plumes measured in ALD surveys of 15 U.S. metropolitan areas where...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2020) 8 (1): 038.
Published: 05 November 2020
... Wolter; Duane Kitzis; Laura Bianco; Clark King; Timothy Coleman; Allen White; Michael Rhodes; Pieter Tans; Russell Schnell In 2014, a satellite-based map of regional anomalies of atmospheric methane (CH 4 ) column retrievals singled out the fossil fuel rich San Juan Basin (SJB) as the biggest CH 4...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2020) 8: 32.
Published: 13 July 2020
...Clay S. Bell; Timothy Vaughn; Daniel Zimmerle; Detlev Helmig; Brian Lamb Twelve next generation emission measurement (NGEM) technologies completed single-blind testing at the Methane Emissions Technology Evaluation Center in 2018. This is the first series of tests to evaluate a wide variety of NGEM...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2020) 8: 15.
Published: 16 April 2020
...T. Klausner; M. Mertens; H. Huntrieser; M. Galkowski; G. Kuhlmann; R. Baumann; A. Fiehn; P. Jöckel; M. Pühl; A. Roiger; Detlev Helmig; Lori Bruhwiler Urban areas are recognised as a significant source of greenhouse gas emissions (GHG), such as carbon dioxide (CO 2 ) and methane (CH 4 ). The total...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2019) 7: 41.
Published: 14 October 2019
...Thomas E. Barchyn; Chris H. Hugenholtz; Thomas A. Fox; Detlev Helmig; Brian Lamb Interest has grown in using new screening technologies such as drones to search for methane leaks in hydrocarbon production infrastructure. Screening technologies may be less expensive and faster than traditional...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2019) 7: 24.
Published: 12 June 2019
...C. S. Foster; E. T. Crosman; J. D. Horel; S. Lyman; B. Fasoli; R. Bares; J. C. Lin; Detlev Helmig; Brian Lamb This study presents a meteorologically-based methodology for quantifying basin-scale methane (CH 4 ) emissions in Utah’s Uintah Basin, which is home to over 9,000 active and producing oil...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2019) 7: 13.
Published: 05 April 2019
... between top-down and bottom-up estimates of regional natural gas (NG) methane (CH 4 ) emissions. In situ mobile downwind measurements are used to document the ethane to methane enhancement ratios (ERs) in emission plumes from NG operations in the region. Enhancement ratios are low (<2% for 87% of NG...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2019) 7: 3.
Published: 03 January 2019
...Elizabeth O’Connell; David Risk; Emmaline Atherton; Evelise Bourlon; Chelsea Fougère; Jennifer Baillie; David Lowry; Jacob Johnson; Detlev Helmig, Ph.D.; Brian Lamb Aggressive reductions of oil and gas sector methane, a potent greenhouse gas, have been proposed in Canada. Few large-scale...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2018) 6: 73.
Published: 07 December 2018
...Mary Katherine Rogener; Annalisa Bracco; Kimberley S. Hunter; Matthew A. Saxton; Samantha B. Joye; Jody W. Deming, Ph.D.; Jeff Bowman The Deepwater Horizon oil well blowout discharged an unprecedented amount of methane into the water column of the northern Gulf of Mexico between April and July 2010...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2018) 6: 57.
Published: 01 August 2018
... a “production cluster” infrastructure with extraction, some processing and storage in a single facility. This region is also the site of intensive agriculture and cattle operations. We present results from a multi-scale measurement campaign of methane emissions, including ground and airborne-based estimates...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2018) 6: 27.
Published: 22 March 2018
...Daniel Zavala-Araiza; Scott C. Herndon; Joseph R. Roscioli; Tara I. Yacovitch; Matthew R. Johnson; David R. Tyner; Mark Omara; Berk Knighton; Detlev Helmig; Stefan Schwietzke We performed ground-based measurements (downwind, site-wide characterization) of methane emissions from older light oil...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2017) 5: 79.
Published: 27 December 2017
...Clay S. Bell; Timothy L. Vaughn; Daniel Zimmerle; Scott C. Herndon; Tara I. Yacovitch; Garvin A. Heath; Gabrielle Pétron; Rachel Edie; Robert A. Field; Shane M. Murphy; Anna M. Robertson; Jeffrey Soltis; Detlev Helmig; Brian Lamb This study presents the results of a campaign that estimated methane...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2017) 5: 70.
Published: 24 November 2017
... measured methane emissions data are available. This study performed leak detection and measurement on 96 km of gathering pipeline and the associated 56 pigging facilities and 39 block valves. The study found one underground leak accounting for 83% (4.0 kg CH 4 /hr) of total measured emissions. Methane...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2017) 5: 69.
Published: 24 November 2017
...Tara I. Yacovitch; Conner Daube; Timothy L. Vaughn; Clay S. Bell; Joseph R. Roscioli; W. Berk Knighton; David D. Nelson; Daniel Zimmerle; Gabrielle Pétron; Scott C. Herndon; Detlev Helmig; Isobel Jane Simpson Methane (CH 4 ) emission rates from a sample of natural gas facilities across industry...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2017) 5: 27.
Published: 13 June 2017
... emissions via a tower-based greenhouse gas (GHG) network, as part of the Indianapolis Flux (INFLUX) experiment. By examining afternoon-averaged results from a network of carbon dioxide (CO 2 ), methane (CH 4 ), and carbon monoxide (CO) mole fraction measurements in Indianapolis, Indiana for 2011–2013, we...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2017) 5: 21.
Published: 23 May 2017
... License (CC-BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See http://creativecommons.org/licenses/by/4.0/ . Automobile-based GHG measurements have been conducted to identify point sources of methane...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2017) 5: 18.
Published: 19 April 2017
... stimulated methane production towards the end of the experiment, and led to slightly higher cell densities without significant changes in microbial community structure, based on 16S rRNA gene sequence libraries and fatty acid profiles. Assuming a link between sulfate reduction and hydrocarbon degradation...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2017) 5: 12.
Published: 27 March 2017
... present a characterization of reactive gases (RG: O 3 , NO, NO 2 ,SO 2 , CO) and methane (CH 4 ) variability in the central Mediterranean basin,analyzing in situ measurements at three new permanent WMO/GAW Observatories in Southern Italy: Capo Granitola – CGR (Sicily), Lamezia Terme – LMT (Calabria...
Includes: Supplementary data
Journal Articles
Elementa: Science of the Anthropocene (2017) 5: 1.
Published: 09 February 2017
... gas development on local scale atmospheric background concentrations of air pollution and climate relevant pollutants in Pennsylvania. The first campaign took place in Northeastern and Southwestern PA in the summer of 2012. Compounds monitored included methane (CH 4 ), ethane, carbon monoxide (CO...
Includes: Supplementary data