title: The detection of carbon dioxide leaks using quasi-tomographic laser absorption spectroscopy measurements in variable wind.
abstract: Laser absorption spectroscopy (LAS) has been used over the last several decades for the measurement of trace gasses in the atmosphere. For over a decade, LAS measurements from multiple sources and tens of retroreflectors have been combined with sparse-sample tomography methods to estimate the 2-D distribution of trace gas concentrations and underlying fluxes from point-like sources. In this work, we consider the ability of such a system to detect and estimate the position and rate of a single point leak which may arise as a failure mode for carbon dioxide storage. The leak is assumed to be at a constant rate giving rise to a plume with a concentration and distribution that depend on the wind velocity. We demonstrate the ability of our approach to detect a leak using numerical simulation and also present a preliminary measurement.
authors.affiliation: National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland, 20899, USA.
authors.forename: Zachary H
authors.initials: ZH
authors.lastname: Levine
authors.affiliation: National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland, 20899, USA.
authors.forename: Adam L
authors.initials: AL
authors.lastname: Pintar
authors.affiliation: Harris Corp., 1919 W. Cook Road, Ft. Wayne, Indiana, 46801, USA.
authors.forename: Jeremy T
authors.initials: JT
authors.lastname: Dobler
authors.affiliation: Harris Corp., 1919 W. Cook Road, Ft. Wayne, Indiana, 46801, USA.
authors.forename: Nathan
authors.initials: N
authors.lastname: Blume
authors.affiliation: Harris Corp., 1919 W. Cook Road, Ft. Wayne, Indiana, 46801, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Braun
authors.affiliation: Atmospheric and Environmental Research, 131 Hartwell Avenue, Lexington, Massachusetts, 02421, USA.
authors.forename: T
authors.initials: T
authors.lastname: Scott Zaccheo
authors.affiliation: Atmospheric and Environmental Research, 131 Hartwell Avenue, Lexington, Massachusetts, 02421, USA.
authors.forename: Timothy G
authors.initials: TG
authors.lastname: Pernini