DOI: 10.1016/j.atmosenv.2018.02.039
Scopus记录号: 2-s2.0-85042687995
论文题名: Assessing the impacts of seasonal and vertical atmospheric conditions on air quality over the Pearl River Delta region
作者: Tong C ; H ; M ; , Yim S ; H ; L ; , Rothenberg D ; , Wang C ; , Lin C ; -Y ; , Chen Y ; D ; , Lau N ; C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 180 起始页码: 69
结束页码: 78
语种: 英语
英文关键词: Air quality
; Climate change
; Generalized linear models
; Principal component regression
; Trans-boundary air pollution
Scopus关键词: Air quality
; Atmospheric humidity
; Climate change
; Climate models
; Environmental impact
; Ozone
; Pollution
; Principal component analysis
; River pollution
; Sulfur dioxide
; Troposphere
; Weather forecasting
; Generalized linear model
; Low relative humidities
; Major principal component
; Meteorological variables
; Pearl River Delta region
; Pollutant concentration
; Principal component regression
; Trans-boundary air pollutions
; Air pollution
; ozone
; sulfur dioxide
; air pollutant
; air pollution
; air quality
; altitude
; Article
; atmosphere
; humidity
; meteorology
; priority journal
; river
; suspended particulate matter
; troposphere
; weather
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 pollution is an increasingly concerning problem in many metropolitan areas due to its adverse public health and environmental impacts. Vertical atmospheric conditions have strong effects on vertical mixing of air pollutants, which directly affects surface air quality. The characteristics and magnitude of how vertical atmospheric conditions affect surface air quality, which are critical to future air quality projections, have not yet been fully understood. This study aims to enhance understanding of the annual and seasonal sensitivities of air pollution to both surface and vertical atmospheric conditions. Based on both surface and vertical meteorological characteristics provided by 1994–2003 monthly dynamic downscaling data from the Weather and Research Forecast Model, we develop generalized linear models (GLMs) to study the relationships between surface air pollutants (ozone, respirable suspended particulates, and sulfur dioxide) and atmospheric conditions in the Pearl River Delta (PRD) region. Applying Principal Component Regression (PCR) to address multi-collinearity, we study the contributions of various meteorological variables to pollutants’ concentration levels based on the loading and model coefficient of major principal components. Our results show that relatively high pollutant concentration occurs under relatively low mid-level troposphere temperature gradients, low relative humidity, weak southerly wind (or strong northerly wind) and weak westerly wind (or strong easterly wind). Moreover, the correlations vary among pollutant species, seasons, and meteorological variables at various altitudes. In general, pollutant sensitivity to meteorological variables is found to be greater in winter than in other seasons, and the sensitivity of ozone to meteorology differs from that of the other two pollutants. Applying our GLMs to anomalous air pollution episodes, we find that meteorological variables up to mid troposphere (∼700 mb) play an important role in influencing surface air quality, pinpointing the significant and unique associations between meteorological variables at higher altitudes and surface air quality. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82907
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Geography and Resource Management, The Chinese University of Hong Kong, Hong Kong; The Institute of Environment, Energy and Sustainability, The Chinese University of Hong Kong, Hong Kong; Center for Global Change Science, Massachusetts Institute of Technology, Cambridge, MA, United States; Research Center for Environmental Changes, Academia SinicaTaipei, Taiwan
Recommended Citation:
Tong C,H,M,et al. Assessing the impacts of seasonal and vertical atmospheric conditions on air quality over the Pearl River Delta region[J]. Atmospheric Environment,2018-01-01,180