Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-4439-2019 |
Effects of urbanization on regional meteorology and air quality in Southern California | |
Li, Yun1; Zhang, Jiachen1; Sailor, David J.2; Ban-Weiss, George A.1 | |
2019-04-05 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:7页码:4439-4457 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Urbanization has a profound influence on regional meteorology and air quality in megapolitan Southern California. The influence of urbanization on meteorology is driven by changes in land surface physical properties and land surface processes. These changes in meteorology in turn influence air quality by changing temperature-dependent chemical reactions and emissions, gas-particle phase partitioning, and ventilation of pollutants. In this study we characterize the influence of land surface changes via historical urbanization from before human settlement to the present day on meteorology and air quality in Southern California using the Weather Research and Forecasting Model coupled to chemistry and the single-layer urban canopy model (WRF-UCM- Chem). We assume identical anthropogenic emissions for the simulations carried out and thus focus on the effect of changes in land surface physical properties and land surface processes on air quality. Historical urbanization has led to daytime air temperature decreases of up to 1.4 K and evening temperature increases of up to 1.7 K. Ventilation of air in the LA basin has decreased up to 36.6 % during daytime and increased up to 27.0 % during nighttime. These changes in meteorology are mainly attributable to higher evaporative fluxes and thermal inertia of soil from irrigation and increased surface roughness and thermal inertia from buildings. Changes in ventilation drive changes in hourly NO, concentrations with increases of up to 2.7 ppb during daytime and decreases of up to 4.7 ppb at night. Hourly O-3 concentrations decrease by up to 0.94 ppb in the morning and increase by up to 5.6 ppb at other times of day. Changes in O-3 concentrations are driven by the competing effects of changes in ventilation and precursor NO(x )concentrations. PM2.5 concentrations show slight increases during the day and decreases of up to 2.5 mu g M-3 at night. Process drivers for changes in PM(2)(.5)( )include modifications to atmospheric ventilation and temperature, which impact gas-particle phase partitioning for semi-volatile compounds and chemical reactions. Understanding process drivers related to how land surface changes effect regional meteorology and air quality is crucial for decision-making on urban planning in megapolitan Southern California to achieve regional climate adaptation and air quality improvements. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000463512700001 |
WOS关键词 | URBAN HEAT-ISLAND ; CANOPY MODEL ; BOUNDARY-LAYER ; OZONE ; CLIMATE ; IMPACTS ; MITIGATION ; PARAMETERIZATION ; SIMULATION ; DEPOSITION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182285 |
专题 | 地球科学 |
作者单位 | 1.Univ Southern Calif, Dept Civil & Environm Engn, Los Angeles, CA 90089 USA; 2.Arizona State Univ, Sch Geog Sci & Urban Planning, Tempe, AZ 85281 USA |
推荐引用方式 GB/T 7714 | Li, Yun,Zhang, Jiachen,Sailor, David J.,et al. Effects of urbanization on regional meteorology and air quality in Southern California[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(7):4439-4457. |
APA | Li, Yun,Zhang, Jiachen,Sailor, David J.,&Ban-Weiss, George A..(2019).Effects of urbanization on regional meteorology and air quality in Southern California.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(7),4439-4457. |
MLA | Li, Yun,et al."Effects of urbanization on regional meteorology and air quality in Southern California".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.7(2019):4439-4457. |
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