Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD030198 |
Wintertime Boundary Layer Evolution and Air Pollution Potential Over the Kathmandu Valley, Nepal | |
Regmi, Ram P.1; Kitada, Toshihiro2; Maharjan, Sangeeta1; Shrestha, Sajan1; Shrestha, Saraswati1; Regmi, Greema3 | |
2019-04-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:8页码:4299-4325 |
文章类型 | Article |
语种 | 英语 |
国家 | Nepal; Japan |
英文摘要 | Meteorological effects on wintertime air pollution in the Kathmandu Valley were investigated using SOnic Detection and Ranging soundings, AutomaticWeather Station measurements, numerical simulation usingWeather Research and Forecasting data, and Chemical Transport Modeling during February 2013. A surrogate for black carbon was used for transport simulation in order to better understand the effects of local meteorological factors on air pollution. In the simulation, the emission strength of the black carbon surrogate was assumed temporally constant and spatially uniform over the Kathmandu Valley floor. TheWeather Research and Forecasting simulation results were well correlated with observed meteorological measurements and demonstrated diurnal periodicity such as intrusion of westerly-northwesterly wind into the Kathmandu Valley and modification of the boundary layer activity due to afternoon wind. The transport simulation suggested long-lasting weak wind, thermally stable stratification, and associated small turbulence during the night and morning caused potentially severe air pollution. We propose a method using wind velocity and turbulent kinetic energy in the surface layer to characterize pollution level in the Kathmandu Valley. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000469071400003 |
WOS关键词 | MIXING-HEIGHT ESTIMATION ; DOPPLER SODAR ; NUMERICAL-SIMULATION ; TRANSPORT ; VARIABILITY ; DYNAMICS |
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/182459 |
专题 | 气候变化 |
作者单位 | 1.Tribhuvan Univ, Natl Atmospher Resource & Environm Res Lab, Kathmandu, Nepal; 2.Toyohashi Univ Technol, Dept Environm & Life Sci, Toyohashi, Aichi, Japan; 3.St Xaviers Coll, Dept Phys, Kathmandu, Nepal |
推荐引用方式 GB/T 7714 | Regmi, Ram P.,Kitada, Toshihiro,Maharjan, Sangeeta,et al. Wintertime Boundary Layer Evolution and Air Pollution Potential Over the Kathmandu Valley, Nepal[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(8):4299-4325. |
APA | Regmi, Ram P.,Kitada, Toshihiro,Maharjan, Sangeeta,Shrestha, Sajan,Shrestha, Saraswati,&Regmi, Greema.(2019).Wintertime Boundary Layer Evolution and Air Pollution Potential Over the Kathmandu Valley, Nepal.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(8),4299-4325. |
MLA | Regmi, Ram P.,et al."Wintertime Boundary Layer Evolution and Air Pollution Potential Over the Kathmandu Valley, Nepal".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.8(2019):4299-4325. |
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