DOI: 10.1016/j.atmosenv.2013.11.008
Scopus记录号: 2-s2.0-84889648093
论文题名: Higher surface ozone concentrations over the Chesapeake Bay than over the adjacent land: Observations and models from the DISCOVER-AQ and CBODAQ campaigns
作者: Goldberg D ; L ; , Loughner C ; P ; , Tzortziou M ; , Stehr J ; W ; , Pickering K ; E ; , Marufu L ; T ; , Dickerson R ; R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 84 起始页码: 9
结束页码: 19
语种: 英语
英文关键词: Chesapeake Bay
; Community multiscale air quality (CMAQ) model
; Ozone
; Total reactive nitrogen
Scopus关键词: Air quality
; NASA
; Nitrogen
; Ozone
; Regulatory compliance
; Ships
; Surface measurement
; Air quality models
; Chesapeake Bay
; Community multi-scale air qualities
; Model simulation
; Reactive nitrogen
; Regulatory standards
; Research vessels
; Surface ozone concentrations
; Computer simulation
; nitrogen
; ozone
; reactive nitrogen species
; air quality
; bay
; boundary layer
; cloud cover
; concentration (composition)
; marine atmosphere
; model validation
; ozone
; air quality
; air quality standard
; article
; boundary layer
; chemoluminescence
; community multiscale air quality
; dry deposition
; environmental management
; meteorology
; motor vehicle
; observation
; ozone layer
; priority journal
; surface property
; Chesapeake Bay
; Delaware Bay
; Great Lakes [North America]
; United States
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Air quality models, such as the Community Multiscale Air Quality (CMAQ) model, indicate decidedly higher ozone near the surface of large interior water bodies, such as the Great Lakes and Chesapeake Bay. In order to test the validity of the model output, we performed surface measurements of ozone (O3) and total reactive nitrogen (NOy) on the 26-m Delaware II NOAA Small Research Vessel experimental (SRVx), deployed in the Chesapeake Bay for 10 daytime cruises in July 2011 as part of NASA's GEO-CAPE CBODAQ oceanographic field campaign in conjunction with NASA's DISCOVER-AQ air quality field campaign. During this 10-day period, the EPA O3 regulatory standard of 75ppbv averaged over an 8-hperiod was exceeded four times over water while ground stations in the area only exceeded the standard at most twice. This suggests that on days when the Baltimore/Washington region is in compliance with the EPA standard, air quality over the Chesapeake Bay might exceed the EPA standard. Ozone observations over the bay during the afternoon were consistently 10-20% higher than the closest upwind ground sites during the 10-day campaign; this pattern persisted during good and poor air quality days. A lower boundary layer, reduced cloud cover, slower dry deposition rates, and other lesser mechanisms, contribute to the local maximum of ozone over the Chesapeake Bay. Observations from this campaign were compared to a CMAQ simulation at 1.33km resolution. The model is able to predict the regional maximum of ozone over the Chesapeake Bay accurately, but NOy concentrations are significantly overestimated. Explanations for the overestimation of NOy in the model simulations are also explored. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81220
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric and Oceanic Science, University of Maryland, College Park, MD 20742, United States; Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20740, United States; NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States
Recommended Citation:
Goldberg D,L,, Loughner C,et al. Higher surface ozone concentrations over the Chesapeake Bay than over the adjacent land: Observations and models from the DISCOVER-AQ and CBODAQ campaigns[J]. Atmospheric Environment,2014-01-01,84