DOI: 10.1002/jgrd.50197
论文题名: Source apportionment of formaldehyde during TexAQS 2006 using a source-oriented chemical transport model
作者: Zhang H. ; Li J. ; Ying Q. ; Guven B.B. ; Olaguer E.P.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 3 起始页码: 1525
结束页码: 1535
语种: 英语
英文关键词: CMAQ
; formaldehyde
; peroxyacetyl nitrate (PAN)
; source apportionment
; source-oriented air quality model
; Southeast Texas
Scopus关键词: Air quality
; Combustion
; Formaldehyde
; Industry
; Natural gas
; CMAQ
; Peroxyacetyl nitrates
; Source apportionment
; Source-oriented air quality models
; Southeast Texas
; Urban growth
; air quality
; biogenic emission
; concentration (composition)
; formaldehyde
; industrial emission
; matrix
; pollutant source
; traffic emission
; transport process
; urban area
; Texas
; United States
英文摘要: In this study, a source-oriented version of the Community Multiscale Air Quality (CMAQ) model was developed and used to quantify the contributions of five major local emission source types in Southeast Texas (vehicles, industry, natural gas combustion, wildfires, biogenic sources), as well as upwind sources, to regional primary and secondary formaldehyde (HCHO) concentrations. Predicted HCHO concentrations agree well with observations at two urban sites (the Moody Tower [MT] site at the University of Houston and the Haden Road #3 [HRM-3] site operated by Texas Commission on Environmental Quality). However, the model underestimates concentrations at an industrial site (Lynchburg Ferry). Throughout most of Southeast Texas, primary HCHO accounts for approximately 20-30% of total HCHO, while the remaining portion is due to secondary HCHO (30-50%) and upwind sources (20-50%). Biogenic sources, natural gas combustion, and vehicles are important sources of primary HCHO in the urban Houston area, respectively, accounting for 10-20%, 10-30%, and 20-60% of total primary HCHO. Biogenic sources, industry, and vehicles are the top three sources of secondary HCHO, respectively, accounting for 30-50%, 10-30%, and 5-15% of overall secondary HCHO. It was also found that over 70% of PAN in the Houston area is due to upwind sources, and only 30% is formed locally. The model-predicted source contributions to HCHO at the MT generally agree with source apportionment results obtained from the Positive Matrix Factorization (PMF) technique. ©2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63945
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: Zachry Department of Civil Engineering, Texas A and M University, College Station, TX 77843, United States; Department of Civil and Environmental Engineering, University of California, Davis, CA, United States; Houston Advanced Research Center, 4800 Research Forest Dr., The Woodlands, TX 77381, United States
Recommended Citation:
Zhang H.,Li J.,Ying Q.,et al. Source apportionment of formaldehyde during TexAQS 2006 using a source-oriented chemical transport model[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(3)