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

Adam R Brandt1, Jacob Englander2, Robert B Jackson3, Ramon Alvarez4 and David Richard Lyon4, (1)Stanford University, Department of Energy Science and Engineering, Stanford, CA, United States, (2)Stanford Earth Sciences, Stanford, CA, United States, (3)Stanford University, School of Earth, Energy, and Environmental Sciences, Stanford, CA, United States, (4)Environmental Defense Fund, Austin, United States