title: Tracking Regional Background in a Haze Attribution Experiment.
abstract: Emissions from distant source areas are often imagined to provide a steady background to the emissions of whatever local sources are being studied. As part of Project MOHAVE in summer 1992, several air mass markers and an injected stack tracer were measured hourly near the Grand Canyon. Observed haze events generally coincided with transients in methylchloroform and water vapor, which we interpret as endemic tags for air from southern California and the subtropics. The results depict a dynamic regional background.
authors.affiliation: a Washington University , Saint Louis , Missouri , USA.
authors.forename: W H
authors.initials: WH
authors.lastname: White
authors.affiliation: a Washington University , Saint Louis , Missouri , USA.
authors.forename: E S
authors.initials: ES
authors.lastname: Macias
authors.affiliation: a Washington University , Saint Louis , Missouri , USA.
authors.forename: L A
authors.initials: LA
authors.lastname: de P Vasconcelos
authors.affiliation: b Southern California Edison , Rosemead , California , USA.
authors.forename: R J
authors.initials: RJ
authors.lastname: Farber
authors.affiliation: b Southern California Edison , Rosemead , California , USA.
authors.forename: V A
authors.initials: VA
authors.lastname: Mirabella
authors.affiliation: c Desert Research Institute , Las Vegas , Nevada , USA.
authors.forename: M C
authors.initials: MC
authors.lastname: Green
authors.affiliation: d National Oceanic & Atmospheric Administration , Las Vegas , Nevada , USA.
authors.forename: M L
authors.initials: ML
authors.lastname: Pitchford