Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.04.033 |
Association of atmospheric pollution and instability indices: A detailed investigation over an Indian urban metropolis | |
Chakraborty, Rohit1; Saha, Upal2; Singh, A. K.2; Maitra, Animesh1 | |
2017-11-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2017 |
卷号 | 196 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | Convection has a significant role in maintaining the atmospheric dynamics and thermodynamics, particularly in the tropical regions during pre-monsoon season, which may be due to the changing patterns in atmospheric instability and pollution. A critical analysis is done on the variability of instability indices and their significant signature to meteorological parameters and atmospheric pollution over Indian region in the warming atmosphere during 2005-2015. The present study represents that the solid as well as gaseous pollutants, in combination, produce a damping force in suppressing convective activities over the eastern coastal regions of India. A significant anti-correlation (r similar to - 0.6 to - 0.8) between instability parameters [Convective Available Potential Energy (CAPE) and Lifted Index (LI)] and atmospheric pollutants [gaseous (NO2 and SO2) and solid (BC and PM2.5)] has been obtained in the eastern coastal regions on a long-term basis. To improve the level of agreement between pollution and instability, a unitless and dimensionless index called KLURT index has been introduced, which provides correlation (r) value as high as 0.6. On a real time basis, KLURT index is found to be useful as an effective precursor of thunderstorm events. The final part of this study indicates a prediction technique using KLURT index which gives a high prediction efficacy of 75%, low FAR value, extremely good BS 0.06, an excellent bias (similar to 0.96) and a good lead time of 1 h for a threshold value of 12.5 in terms of predicting intense convections at the urban location, Kolkata. Thus, the present study provides an appropriate means to manifest convection as a function of changing anthropogenic factors both in long and short-term basis with high correlation values and provides significant efficacy in predicting severe weather, thereby demonstrating the usefulness of this hypothesis in various socio-economic aspects especially at the current tropical urban location. |
英文关键词 | Atmospheric pollution Instability Precursor Convection KLURT |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000409290200008 |
WOS关键词 | SURFACE SOLAR-RADIATION ; TOTAL COLUMN OZONE ; BLACK CARBON ; CONVECTIVE CLOUDS ; MONSOON RAINFALL ; PROJECTED CHANGE ; AEROSOL IMPACTS ; CLIMATE ; PRECIPITATION ; EVENTS |
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/38138 |
专题 | 地球科学 |
作者单位 | 1.Univ Calcutta, SK Mitra Ctr Res Space Environm, Inst Radio Phys & Elect, Kolkata 700009, India; 2.Banaras Hindu Univ, Dept Phys, Inst Sci, Varanasi 221005, Uttar Pradesh, India |
推荐引用方式 GB/T 7714 | Chakraborty, Rohit,Saha, Upal,Singh, A. K.,et al. Association of atmospheric pollution and instability indices: A detailed investigation over an Indian urban metropolis[J]. ATMOSPHERIC RESEARCH,2017,196. |
APA | Chakraborty, Rohit,Saha, Upal,Singh, A. K.,&Maitra, Animesh.(2017).Association of atmospheric pollution and instability indices: A detailed investigation over an Indian urban metropolis.ATMOSPHERIC RESEARCH,196. |
MLA | Chakraborty, Rohit,et al."Association of atmospheric pollution and instability indices: A detailed investigation over an Indian urban metropolis".ATMOSPHERIC RESEARCH 196(2017). |
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