DOI: 10.1016/j.atmosenv.2015.01.059
Scopus记录号: 2-s2.0-84922370346
论文题名: WRF/Chem modeling of the impacts of urban expansion on regional climate and air pollutants in Yangtze River Delta, China
作者: Liao J ; , Wang T ; , Jiang Z ; , Zhuang B ; , Xie M ; , Yin C ; , Wang X ; , Zhu J ; , Fu Y ; , Zhang Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 106 起始页码: 204
结束页码: 214
语种: 英语
英文关键词: Air pollutants
; Climate
; Urban expansion
; WRF/Chem
; YRD
Scopus关键词: Air pollution
; Air quality
; Boundary layer flow
; Boundary layers
; Economics
; Land use
; Pollution
; Weather forecasting
; Wind
; Air pollutants
; Climate
; Urban expansion
; WRF/Chem
; YRD
; Atmospheric temperature
; air quality
; atmospheric pollution
; boundary layer
; concentration (composition)
; economic development
; land use change
; ozone
; regional climate
; urban growth
; urban pollution
; urbanization
; weather forecasting
; Advanced Weather Research and Forecasting
; air pollutant
; air quality
; air temperature
; Article
; boundary layer
; China
; climate change
; cropland
; environmental monitoring
; forecasting
; land use
; meteorology
; particulate matter
; priority journal
; simulation
; statistical model
; Student t test
; surface property
; temperature
; urbanization
; weather
; wind
; China
; Yangtze Delta
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: The Yangtze River Delta (YRD) region has experienced a rapid urbanization process accompanied with economic development during last decades. To investigate impacts of urbanization on regional climate and air quality, two-month (January and July 2010) simulations with two different land-use scenarios (USGS and MODIS land-use types) are conducted using the Advanced Weather Research and Forecasting/Chemistry (WRF/Chem) modeling system in this study. Results show that the conversion of vegetated and irrigated cropland into urban type significantly changes 2-m temperature and 10-m wind speed, which are obtained from differences of two simulations based on significance t-test at 95% confidence level. Changes of land-use cause an increase in 2-m temperature with maximum (minimum) value of 2.3°C (0.9°C) over urbanized area, a decrease in 10-m wind speed with magnitude of 0.6-1.2ms-1 for both the two months. Planetary boundary layer height (PBLH) differences show a maximum increase of 425m during daytime in July, and the increases are about 100m during nighttime for both January and July. Urbanization reduces near-surface PM10 concentration due to increase of PBLH, with maximum decrease of 57.6μgm-3 during nighttime in July. The biggest increase of O3 is around 6.8ppb during daytime in July and the difference is about 1.7-2.3ppb in January. Vertical profiles show that PM10 concentrations decrease due to increase of mixing height during both daytime and nighttime. While for O3 concentration, urbanization causes an increase during daytime due to higher air temperature and decrease of wind speed and leads to a decrease during nighttime. Overall, influences of urbanization on climate and air quality are important and significant over YRD region, which must be considered in any climate and air quality assessment. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81926
Appears in Collections: 气候变化事实与影响
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作者单位: School of Atmospheric Sciences, Nanjing University, Nanjing, China; School of Environmental Sciences and Engineering, Sun Yat-sen University, Guangzhou, China
Recommended Citation:
Liao J,, Wang T,, Jiang Z,et al. WRF/Chem modeling of the impacts of urban expansion on regional climate and air pollutants in Yangtze River Delta, China[J]. Atmospheric Environment,2015-01-01,106