DOI: 10.1002/jgrd.50406
论文题名: Application of an adjoint neighborhood-scale chemistry transport model to the attribution of primary formaldehyde at Lynchburg Ferry during TexAQS II
作者: Olaguer E.P.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 10 起始页码: 4936
结束页码: 4946
语种: 英语
英文关键词: air quality
; emissions
; formaldehyde
; inverse modeling
; source attribution
Scopus关键词: Air quality
; Ethylene
; Inverse problems
; Mixing
; Particulate emissions
; Plant shutdowns
; Remote sensing
; Ships
; Advanced researches
; Air quality models
; Chemistry transport model
; Differential optical absorption spectroscopy
; In-situ measurement
; Inverse modeling
; Petrochemical facility
; Source attribution
; Formaldehyde
; air quality
; ambient air
; environmental monitoring
; formaldehyde
; image resolution
; mixing ratio
; neighborhood
; ozone
; remote sensing
; simulation
; Houston Ship Channel
; Lynchburg
; Texas
; United States
; Virginia
英文摘要: During the 2006 Second Texas Air Quality Study (TexAQS II) field study, ambient mixing ratios of formaldehyde (HCHO) up to 52 ppbv were observed at Lynchburg Ferry in the Houston Ship Channel on the morning of 27 September 2006. These elevated mixing ratios coincided with a flare event during a sequential planned shutdown of a petrochemical facility ~8 km from the monitoring site. An adjoint version of the Houston Advanced Research Center (HARC) neighborhood air quality model was used to perform 4-D variational inverse modeling of industrial emissions of HCHO and other ozone precursors based on Lynchburg Ferry observations. The simulation employed a horizontal domain size and grid resolution of 8 km × 8 km and 400 m, and was conducted for a 1.5 h period (8-9:30 A.M.) during which the highest HCHO concentrations were recorded. The event emissions of ethene and propene computed by the inverse model are consistent with the largest estimated emissions for the facility in question derived from the Solar Occultation Flux technique during TexAQS II. Moreover, the computed peak flare emissions of HCHO during the shutdown event were around 282 kg/h, which is less than but comparable in magnitude to the largest area-wide total (primary plus secondary) formaldehyde flux from the Houston Ship Channel measured by Differential Optical Absorption Spectroscopy during TexAQS II. The estimated flare event emissions of primary formaldehyde are roughly 50 times larger than HCHO emissions from flares used in routine operations, as inferred from remote sensing and/or real-time in situ measurements during the 2009 SHARP campaign. Key PointsInverse modeling of HCHO and olefins was performedInferred emissions compare well with remote sensing measurementsPrimary HCHO is significant ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63760
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Houston Advanced Research Center, 4800 Research Forest Dr., The Woodlands, TX 77381, United States
Recommended Citation:
Olaguer E.P.. Application of an adjoint neighborhood-scale chemistry transport model to the attribution of primary formaldehyde at Lynchburg Ferry during TexAQS II[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(10)