DOI: 10.1029/2012JD018738
论文题名: Influence of daily variations in baseline ozone on urban air quality in the United States Pacific Northwest
作者: Wigder N.L. ; Jaffe D.A. ; Herron-Thorpe F.L. ; Vaughan J.K.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 8 起始页码: 3343
结束页码: 3354
语种: 英语
英文关键词: baseline ozone
; ozone transport
; surface ozone
; urban air quality
; US NAAQS
Scopus关键词: Air quality
; Cluster analysis
; Regression analysis
; Air quality models
; Backward trajectory
; Boundary layer transport
; Marine boundary layers
; Ozone transport
; Surface ozone
; Urban air quality
; US NAAQS
; Ozone
; air mass
; air quality
; atmospheric pollution
; baseline conditions
; boundary layer
; diurnal variation
; ozone
; pollutant transport
; spatiotemporal analysis
; urban atmosphere
; Pacific Northwest
; United States
英文摘要: We examine the influence of daily variations in baseline ozone (O 3 ) on urban air quality in the U.S. Pacific Northwest (PNW) during 2004 to 2010 through two analyses: (1) transport of free tropospheric (FT) O3 from Mount Bachelor Observatory (MBO) to Boise, Idaho; and (2) transport of marine boundary layer (MBL) O3 from Cheeka Peak (CP) to Enumclaw, Washington. Both Boise and Enumclaw experience days with maximum daily 8 hour averages of O3 (MDA8) exceeding U.S. standards. Backward trajectory cluster analyses identify days when FT and MBL O3 strongly influence MDA8 in Boise and Enumclaw. On these days, MBO and CP O3 observations explain 40% and 69% of the variations in Boise and Enumclaw MDA8, respectively. Bivariate regressions for Boise/MBO and Enumclaw/CP have slopes of 0.52 ± 0.16 and 1.04 ± 0.08, respectively, representing the differing interplay of O3 dilution, production, and loss during FT to boundary layer transport (Boise/MBO) and fast boundary layer transport (Enumclaw/CP). AIRPACT-3/CMAQ (Air Indicator Report for Public Access and Community Tracking version 3/Community Multi-scale Air Quality model) high-resolution air-quality simulation results demonstrate how transport of O3 from the FT above MBO contributes to elevated O3 at Boise. Average MDA8 O3 in Boise is higher than in Enumclaw due to site elevation and greater entrainment of FT air masses, a finding likely applicable to other PNW sites. Days with high baseline influence at Boise and Enumclaw have lower average MDA8 O3 than other days; however, some of these days would still exceed the U.S. standard if it is substantially tightened in 2013, highlighting the increasing importance of FT O3 influence on urban MDA8. ©2012. 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/63806
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: Department of Atmospheric Sciences, University of Washington, 408 Atmospheric Sciences-Geophysics Building, Box 351640, Seattle, WA 98195, United States; Science and Technology Program, University of Washington-Bothell, Bothell WA, United States; Laboratory for Atmospheric Research, Department of Civil and Environmental Engineering, Washington State University, Pullman WA, United States
Recommended Citation:
Wigder N.L.,Jaffe D.A.,Herron-Thorpe F.L.,et al. Influence of daily variations in baseline ozone on urban air quality in the United States Pacific Northwest[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(8)