DOI: 10.1016/j.atmosenv.2016.12.030
Scopus记录号: 2-s2.0-85008193383
论文题名: Impact of high-resolution sea surface temperature, emission spikes and wind on simulated surface ozone in Houston, Texas during a high ozone episode
作者: Pan S ; , Choi Y ; , Jeon W ; , Roy A ; , Westenbarger D ; A ; , Kim H ; C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 152 起始页码: 362
结束页码: 376
语种: 英语
英文关键词: CMAQ
; Emission
; Houston
; Ozone nonattainment
; SST
; Wind direction
Scopus关键词: Air quality
; Atmospheric temperature
; Location
; NASA
; Neutron emission
; Ozone
; Submarine geophysics
; Surface properties
; Surface waters
; Wind
; CMAQ
; Houston
; Land-sea thermal contrasts
; Meteorological condition
; Non-attainment
; Sea surface temperature (SST)
; Sensitivity Simulation
; Wind directions
; Oceanography
; ozone
; air quality
; anthropogenic effect
; atmospheric modeling
; atmospheric pollution
; episodic event
; GOES
; NOAA satellite
; ozone
; sea surface temperature
; volatile organic compound
; wind direction
; wind field
; wind forcing
; air quality
; Article
; circadian rhythm
; dilution
; humidity
; industrial area
; meteorology
; prediction
; priority journal
; sea surface temperature
; simulation
; skin temperature
; spike
; surface property
; Texas
; urban area
; wind
; Houston
; Texas
; 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: Model-measurement comparisons for surface ozone often show significant error, which could be attributed to problems in meteorology and emissions fields. A WRF-SMOKE-CMAQ air quality modeling system was used to investigate the contributions of these inputs. In this space, a base WRF run (BASE) and a WRF run initializing with NOAA GOES satellite sea surface temperature (SST) (SENS) were performed to clarify the impact of high-resolution SST on simulated surface ozone (O3) over the Greater Houston area during 25 September 2013, corresponding to the high O3episode during the NASA DISCOVER-AQ Texas campaign. The SENS case showed reduced land-sea thermal contrast during early morning hours due to 1–2 °C lower SST over water bodies. The lowered SST reduced the model wind speed and slowed the dilution rate. These changes led to a simulated downwind O3change of ∼5 ppb near the area over land with peak simulated afternoon O3. However, the SENS case still under-predicted surface O3in urban and industrial areas. Episodic flare emissions, dry sunny postfrontal stagnated conditions, and land-bay/sea breeze transitions could be the potential causes of the high O3. In order to investigate the additional sources of error, three sensitivity simulations were performed for the high ozone time period. These involved adjusted emissions, adjusted wind fields, and both adjusted emissions and winds. These scenarios were superimposed on the updated SST (SENS) case. Adjusting NOxand VOC emissions using simulated/observed ratios improved correlation and index of agreement (IOA) for NOxfrom 0.48 and 0.55 to 0.81 and 0.88 respectively, but still reported spatial misalignment of afternoon O3hotspots. Adjusting wind fields to represent morning weak westerly winds and afternoon converging zone significantly mitigated under-estimation of the observed O3peak. For example, simulations with adjusted wind fields and adjusted (emissions + wind fields) reduced under-estimation of the peak magnitude of 100 ppb from 50 ppb to 7 and 9 ppb. Additionally, these sensitivity cases captured the timing and location of the observed O3hotspots. The simulation case with both adjusted emissions and wind fields showed the best statistics for NOx(correlation: 0.84; IOA: 0.90) and O3(correlation: 0.87; IOA: 0.92). These comparisons suggest that emissions and wind fields are important in determining the magnitude of high peaks, and wind direction is more critical in determining their timing and location. Particularly, improving the model capability to reproduce small-scale meteorological conditions favoring O3production, such as stagnation and wind reversal, is crucial for accurate placement of locations of peak O3and its precursors. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82548
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth and Atmospheric Sciences, University of Houston, 312 Science & Research Building 1, Houston, TX, United States; Texas Commission on Environmental Quality, Austin, TX, United States; NOAA Air Resources Laboratory, College Park, MD, United States; Cooperative Institute for Climate and Satellite, University of Maryland, College Park, MD, United States
Recommended Citation:
Pan S,, Choi Y,, Jeon W,et al. Impact of high-resolution sea surface temperature, emission spikes and wind on simulated surface ozone in Houston, Texas during a high ozone episode[J]. Atmospheric Environment,2017-01-01,152