title: Probing emissions of military cargo aircraft: description of a joint field measurement Strategic Environmental Research and Development Program.
abstract: To develop effective air quality control strategies for military air bases, there is a need to accurately quantify these emissions. In support of the Strategic Environmental Research and Development Program project, the particulate matter (PM) and gaseous emissions from two T56 engines on a parked C-130 aircraft were characterized at the Kentucky Air National Guard base in Louisville, KY. Conventional and research-grade instrumentation and methodology were used in the field campaign during the first week of October 2005. Particulate emissions were sampled at the engine exit plane and at 15 m downstream. In addition, remote sensing of the gaseous species was performed via spectroscopic techniques at 5 and 15 m downstream of the engine exit. It was found that PM mass and number concentrations measured at 15-m downstream locations, after dilution-correction generally agreed well with those measured at the engine exhaust plane; however, higher variations were observed in the far-field after natural dilution of the downstream measurements was accounted for. Using carbon dioxide-normalized data we demonstrated that gas species measurements by extractive and remote sensing techniques agreed reasonably well.
authors.affiliation: Environmental Sciences Division, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN 37831-6038, USA. chengmd@ornl.gov
authors.forename: Meng-Dawn
authors.initials: MD
authors.lastname: Cheng
authors.forename: Edwin
authors.initials: E
authors.lastname: Corporan
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: DeWitt
authors.forename: Chester W
authors.initials: CW
authors.lastname: Spicer
authors.forename: Michael W
authors.initials: MW
authors.lastname: Holdren
authors.forename: Kenneth A
authors.initials: KA
authors.lastname: Cowen
authors.forename: Alex
authors.initials: A
authors.lastname: Laskin
authors.forename: David B
authors.initials: DB
authors.lastname: Harris
authors.forename: Richard C
authors.initials: RC
authors.lastname: Shores
authors.forename: Robert
authors.initials: R
authors.lastname: Kagann
authors.forename: Ram
authors.initials: R
authors.lastname: Hashmonay
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000401:Aircraft; D001359:Aviation; D004784:Environmental Monitoring / Q000379:methods*; D005740:Gases / Q000032:analysis; D017752:Greenhouse Effect; D052638:Particulate Matter / Q000032:analysis
chemical_list: D000393:Air Pollutants; D005740:Gases; D052638:Particulate Matter