Repeated helicopter-based surveys of fugitive hydrocarbon emissions from tight oil operations: Persistence and driving factors

Adam R Brandt, Stanford University, Department of Energy Science and Engineering, Stanford, CA, United States, Jacob Englander, Stanford Earth Sciences, Stanford, CA, United States, Robert B Jackson, Stanford University, School of Earth, Energy, and Environmental Sciences, Stanford, CA, United States, Ramon Alvarez, Environmental Defense Fund, Austin, United States and David Richard Lyon, Environmental Defense Fund, Loveland, United States