title: Airborne measurements of ethene from industrial sources using laser photo-acoustic spectroscopy.
abstract: A laser photoacoustic spectroscopy (LPAS) instrument was developed and used for aircraft measurements of ethene from industrial sources near Houston, Texas. The instrument provided 20 s measurements with a detection limit of less than 0.7 ppbv. Data from this instrument and from the GC-FID analysis of air samples collected in flight agreed within 15% on average. Ethene fluxes from the Mt. Belvieu chemical complex to the northeast of Houston were quantified during 10 different flights. The average flux was 520 +/- 140 kg h(-1) in agreement with independent results from solar occultation flux (SOF) measurements, and roughly an order of magnitude higher than regulatory emission inventories indicate. This study shows that ethene emissions are routinely at levels that qualify as emission upsets, which need to be reported to regional air quality managers.
authors.affiliation: NOAA Earth System Research Laboratory, Boulder, CO, CIRES, University of Colorado, Boulder, CO, USA. joost.deGouw@noaa.gov
authors.forename: J A
authors.initials: JA
authors.lastname: De Gouw
authors.forename: S
authors.initials: S
authors.lastname: te Lintel Hekkert
authors.forename: J
authors.initials: J
authors.lastname: Mellqvist
authors.forename: C
authors.initials: C
authors.lastname: Warneke
authors.forename: E L
authors.initials: EL
authors.lastname: Atlas
authors.forename: F C
authors.initials: FC
authors.lastname: Fehsenfeld
authors.forename: A
authors.initials: A
authors.lastname: Fried
authors.forename: G J
authors.initials: GJ
authors.lastname: Frost
authors.forename: F J M
authors.initials: FJ
authors.lastname: Harren
authors.forename: J S
authors.initials: JS
authors.lastname: Holloway
authors.forename: B
authors.initials: B
authors.lastname: Lefer
authors.forename: R
authors.initials: R
authors.lastname: Lueb
authors.forename: J F
authors.initials: JF
authors.lastname: Meagher
authors.forename: D D
authors.initials: DD
authors.lastname: Parrish
authors.forename: M
authors.initials: M
authors.lastname: Patel
authors.forename: L
authors.initials: L
authors.lastname: Pope
authors.forename: D
authors.initials: D
authors.lastname: Richter
authors.forename: C
authors.initials: C
authors.lastname: Rivera
authors.forename: T B
authors.initials: TB
authors.lastname: Ryerson
authors.forename: J
authors.initials: J
authors.lastname: Samuelsson
authors.forename: J
authors.initials: J
authors.lastname: Walega
authors.forename: R A
authors.initials: RA
authors.lastname: Washenfelder
authors.forename: P
authors.initials: P
authors.lastname: Weibring
authors.forename: X
authors.initials: X
authors.lastname: Zhu
mesh_terms: D000162:Acoustics; D000393:Air Pollutants / Q000032:analysis*; D005030:Ethylenes / Q000032:analysis*; D013057:Spectrum Analysis / Q000379:methods*
chemical_list: D000393:Air Pollutants; D005030:Ethylenes; C036216:ethylene