...Nathan Blume; Timothy G. Pernini; Jeremy T. Dobler; T. Scott Zaccheo; Doug McGregor; Clay Bell Path-integrated column measurements with a laser-absorption-based measurement system have been used to detect, locate, and quantify methane emissions from a series of single-blind controlled releases...

... The air–sea exchange and oceanic cycling of greenhouse gases (GHG), including carbon dioxide (CO 2 ), nitrous oxide (N 2 O), methane (CH 4 ), carbon monoxide (CO), and nitrogen oxides (NO x = NO + NO 2 ), are fundamental in controlling the evolution of the Earth’s atmospheric chemistry and climate...

... details, and sensor package of HELiPOD, which was completely renewed for the deployment during the MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) expedition across the North Polar Ocean in 2019/2020. It was updated for the deployment in the methane campaigns METHANE-To-Go...

...Simon A. Festa-Bianchet; Zachary R. Milani; Matthew R. Johnson Uncontrolled oil production storage tanks are important but poorly understood sources of methane (CH 4 ) emissions in the upstream oil and gas sector. This study reports and analyzes directly measured, temporally varying CH 4 emission...

...Dana R. Caulton; Priya D. Gurav; Anna M. Robertson; Kristen Pozsonyi; Shane M. Murphy; David R. Lyon There has been increasing interest in quantifying methane (CH 4 ) emissions from a view toward mitigation. Accordingly, ground-based sampling of oil and gas production sites in the Permian Basin...

...Piotr Korbeń; Paweł Jagoda; Hossein Maazallahi; Johannes Kammerer; Jarosław M. Nęcki; Julia B. Wietzel; Jakub Bartyzel; Andrei Radovici; Daniel Zavala-Araiza; Thomas Röckmann; Martina Schmidt The ROMEO campaign (ROmanian Methane Emissions from Oil and gas) focused on measurements of methane (CH 4...

...Clay Bell; Jeff Rutherford; Adam Brandt; Evan Sherwin; Timothy Vaughn; Daniel Zimmerle Methane detection limits, emission rate quantification accuracy, and potential cross-species interference are assessed for Bridger Photonics’ Gas Mapping LiDAR (GML) system utilizing data collected during...

... Engine Two-stroke NO X Methane VOC The United States is the world’s largest producer of oil and natural gas ( Energy Information Administration, 2022 ). Many studies over the past decade have sought to understand how U.S. oil and gas production impacts local air quality ( Ahmadov et al...

...Stuart N. Riddick; Riley Ancona; Fancy Cheptonui; Clay S. Bell; Aidan Duggan; Kristine E. Bennett; Daniel J. Zimmerle Methane (CH 4 ) is emitted during extraction, processing, and transport processes in the natural gas industry. As a powerful greenhouse gas, CH 4 releases are harmful...

...Pankaj Sadavarte; Sudhanshu Pandey; Joannes D. Maasakkers; Hugo Denier van der Gon; Sander Houweling; Ilse Aben Coal mines are globally an important source of methane and also one of the largest point sources of methane. We present a high-resolution 0.1° × 0.1° bottom-up gridded emission inventory...

...Mark Argento; Fiona Henderson; Rachel Lewis; Deirdre A. Mallyon; David Risk; Nicholas Nickerson As oil and gas wells age and the number of wells drilled increases to meet demand, we may see more instances of fugitive soil gas migration (GM) and associated methane (CH 4 ) emissions. Due...

... Attribution 4.0 International 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/ . Urban emissions Greenhouse gas emissions Methane Carbon dioxide...

...Samuel Rossabi; Jacques Hueber; Wei Wang; Pam Milmoe; Detlev Helmig Methane and nonmethane volatile organic compounds (VOCs) were monitored near Boulder in the Northern Colorado Front Range to investigate their spatial distribution and sources as a part of the Front Range Air Pollution...

...B. F. Thornton; G. Etiope; S. Schwietzke; A. V. Milkov; R. W. Klusman; A. Judd; D. Z. Oehler Global bottom-up and top-down estimates of natural, geologic methane (CH 4 ) emissions (average approximately 45 Tg yr –1 ) have recently been questioned by near-zero (approximately 1.6 Tg yr –1 ) estimates...

...Caroline Jacques; Célia J. Sapart; François Fripiat; Gauthier Carnat; Jiayun Zhou; Bruno Delille; Thomas Röckmann; Carina van der Veen; Helge Niemann; Tim Haskell; Jean-Louis Tison We report on methane (CH 4 ) stable isotope (δ 13 C and δ 2 H) measurements from landfast sea ice collected near...

... 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...

... 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...

... 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...

...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...

...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...