GSTDTAP  > 地球科学
DOI10.1016/j.atmosres.2018.12.026
Impacts of urban expansion on fog types in Shanghai, China: Numerical experiments by WRF model
Gu, Ying1; Kusaka, Hiroyuki2; Van Quang Doan3; Tan, Jianguo4
2019-05-15
发表期刊ATMOSPHERIC RESEARCH
ISSN0169-8095
EISSN1873-2895
出版年2019
卷号220页码:57-74
文章类型Article
语种英语
国家Peoples R China; Japan; Singapore
英文摘要

Fog is a hazard to transportation activities in Shanghai, China, but it is not known how this fog is influenced by urban expansion. Here we use a numerical model to run, for the first time for Shanghai, sensitivity experiments of the fog response to urban expansion, including the changes of land use and anthropogenic heat. Instead of using 'fog days' as a measure, we use the 29-year (1989-2017) meteorological observations of fog events at Hongqiao International Airport in central Shanghai, and classify the fog into radiation, advection, advection-radiation, and precipitation types. The results show that (1) Fog events generally decrease over these 29 years, with the decline in winter accounting for 50.2% of the total reduction. (2) Radiation fog decreases the most, but remains the most common type throughout the period. (3) Numerical sensitivity experiments show that the urban expansion in the past 29 years caused both an increase in surface air temperature and a decrease in water-vapor mixing ratio, resulting in a decrease in relative humidity and an increase in visibility for radiation fog. (4) For advection fog, the increased surface air temperature allowed an increase in water-vapor mixing ratio, but a decrease in liquid water. (5) Due to warmer near-surface air, the inversion layer weakened. Hence, urban expansion in Shanghai has reduced the amount of not only radiation fog, but also advection fog.


英文关键词Urban expansion WRF Climatological characteristics Fog event Fog type Shanghai
领域地球科学
收录类别SCI-E
WOS记录号WOS:000459364100006
WOS关键词CENTRAL VALLEY ; RADIATION FOG ; HAZE EVENT ; DENSE FOG ; TRENDS ; AEROSOL ; URBANIZATION ; EPISODE ; DECLINE ; AIRPORT
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向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/183203
专题地球科学
作者单位1.Shanghai Univ Engn Sci, Sch Air Transportat, Shanghai 201620, Peoples R China;
2.Univ Tsukuba, Ctr Computat Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058577, Japan;
3.Ctr Climate Res Singapore, Singapore 537054, Singapore;
4.Shanghai Climate Ctr, Shanghai Meteorol Serv, Shanghai 200030, Peoples R China
推荐引用方式
GB/T 7714
Gu, Ying,Kusaka, Hiroyuki,Van Quang Doan,et al. Impacts of urban expansion on fog types in Shanghai, China: Numerical experiments by WRF model[J]. ATMOSPHERIC RESEARCH,2019,220:57-74.
APA Gu, Ying,Kusaka, Hiroyuki,Van Quang Doan,&Tan, Jianguo.(2019).Impacts of urban expansion on fog types in Shanghai, China: Numerical experiments by WRF model.ATMOSPHERIC RESEARCH,220,57-74.
MLA Gu, Ying,et al."Impacts of urban expansion on fog types in Shanghai, China: Numerical experiments by WRF model".ATMOSPHERIC RESEARCH 220(2019):57-74.
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