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DOI | 10.1002/2017JD028004 |
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 |
ISSN | 2169-897X |
EISSN | 2169-8996 |
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 |
推荐引用方式 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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