GSTDTAP  > 气候变化
DOI10.1002/2017JD028004
Aerosol and Urban Land Use Effect on Rainfall Around Cities in Indo-Gangetic Basin From Observations and Cloud Resolving Model Simulations
Sarangi, Chandan1,2; Tripathi, S. N.1,3; Qian, Yun2; Kumar, Shailendra3; Leung, L. Ruby2
2018-04-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2018
卷号123期号:7页码:3645-3667
文章类型Article
语种英语
国家India; USA
英文摘要

Coupling of urban land use land cover (LULC) and aerosol loading on rainfall around cities in the Gangetic Basin (GB) is examined here. Long-term observations illustrate more rainfall at urban core and climatological downwind regions compared to the upwind regions of Kanpur, a metropolitan area located in central GB. In addition, analysis of a 15day cloud resolving simulation using the Weather Research and Forecasting model also illustrated similar rainfall pattern around other major cities in the GB. Interestingly, the enhancement of downwind rainfall was greater than that over urban regions, and it was positively associated with both the urban area of the city and ambient aerosol loading during the propagating storm. Further, to gain a process-level understanding, a typical storm that propagated northwestward across Kanpur was simulated using Weather Research and Forecasting under three different scenarios. Case 1 has realistic LULC representation of Kanpur, while the grids representing the Kanpur urban region were replaced by cropland LULC pattern in Case 2. Comparison illustrated that urban heat island effect caused convergence of winds and moisture in the lower troposphere, which enhances convection over urban region and induced more rainfall over the urban core compared to upwind regions. Case 3 is similar to Case 1 but lower aerosol concentration (by a factor of 100) over the storm region. Analysis shows that aerosol-induced microphysical changes delay the initiation of warm rain (over the upwind region) but enhance ice phase particle formation in latter stages (over the urban and downwind regions) resulting in increase in downwind rainfall.


英文关键词urban land use aerosol rainfall Gangetic Basin cloud invigoration microphysics
领域气候变化
收录类别SCI-E
WOS记录号WOS:000430786500017
WOS关键词MEASURING MISSION TRMM ; PART I ; CONVECTIVE PRECIPITATION ; SUMMER PRECIPITATION ; EXPLICIT FORECASTS ; ICE NUCLEATION ; CCN CLOSURE ; WRF MODEL ; URBANIZATION ; CLIMATE
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/32652
专题气候变化
作者单位1.Indian Inst Technol, Dept Civil Engn, Kanpur, Uttar Pradesh, India;
2.Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA USA;
3.Indian Inst Technol, Ctr Environm Sci & Engn, Kanpur, Uttar Pradesh, India
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GB/T 7714
Sarangi, Chandan,Tripathi, S. N.,Qian, Yun,et al. Aerosol and Urban Land Use Effect on Rainfall Around Cities in Indo-Gangetic Basin From Observations and Cloud Resolving Model Simulations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(7):3645-3667.
APA Sarangi, Chandan,Tripathi, S. N.,Qian, Yun,Kumar, Shailendra,&Leung, L. Ruby.(2018).Aerosol and Urban Land Use Effect on Rainfall Around Cities in Indo-Gangetic Basin From Observations and Cloud Resolving Model Simulations.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(7),3645-3667.
MLA Sarangi, Chandan,et al."Aerosol and Urban Land Use Effect on Rainfall Around Cities in Indo-Gangetic Basin From Observations and Cloud Resolving Model Simulations".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.7(2018):3645-3667.
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