Arid
DOI10.1016/j.aeolia.2015.01.006
Meteorological, atmospheric and climatic perturbations during major dust storms over Indo-Gangetic Basin
Kumar, Sarvan1; Kumar, Sanjay1,2; Kaskaoutis, D. G.3; Singh, Ramesh P.4; Singh, Rajeev K.5; Mishra, Amit K.6; Srivastava, Manoj K.5; Singh, Abhay K.1
通讯作者Singh, Abhay K.
来源期刊AEOLIAN RESEARCH
ISSN1875-9637
EISSN2212-1684
出版年2015
卷号17页码:15-31
英文摘要

During the pre-monsoon season (April-June), the Indo-Gangetic Basin (IGB) suffers from frequent and intense dust storms originated from the arid and desert regions of southwest Asia (Iran, Afghanistan), Arabia and Thar desert blanketing IGB and Himalayan foothills. The present study examines the columnar and vertical aerosol characteristics and estimates the shortwave (0.25-4.0 mu m) aerosol radiative forcing (ARF) and atmospheric heating rates over Kanpur, central IGB, during three intense dust-storm events in the pre-monsoon season of 2010. MODIS images, meteorological and AERONET observations clearly show that all the dust storms either originated from the Thar desert or transported over, under favorable meteorological conditions (low pressure and strong surface winds) affecting nearly the whole IGB and modifying the aerosol loading and characteristics (Angstrom exponent, single scattering albedo, size distribution and refractive index). CALIPSO observations reveal the presence of high-altitude (up to 3-5 km) dust plumes that strongly modify the vertical aerosol profile and are transported over Himalayan foothills with serious climate implications (atmospheric warming, enhanced melting of glaciers). Shortwave ARF calculations over Kanpur using SBDART model show large negative forcing values at the surface (-93.27, -101.60 and -66.71 W m(-2)) during the intense dusty days, associated with planetary (top of atmosphere) cooling (-18.16, -40.95, -29.58 W m(-2)) and significant atmospheric heating (75.11, 60.65, 37.13 W m(-2)), which is translated to average heating rates of 1.57, 1.41 and 0.78 K day(-1), respectively in the lower atmosphere (below similar to 3.5 km). The ARF estimates are in satisfactory agreement with the AERONET ARF retrievals over Kanpur. (C) 2015 Elsevier B.V. All rights reserved.


英文关键词Dust storms Optical properties AERONET CALIPSO Radiative forcing IGB
类型Article
语种英语
国家India ; Singapore ; USA ; Israel
收录类别SCI-E
WOS记录号WOS:000357146700002
WOS关键词AEROSOL OPTICAL-PROPERTIES ; RADIATIVE HEATING RATES ; ENHANCED WATER-VAPOR ; NORTHERN INDIA ; SATELLITE ; VARIABILITY ; TRANSPORT ; KANPUR ; REGION ; LAYER
WOS类目Geography, Physical
WOS研究方向Physical Geography
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/185484
作者单位1.Banaras Hindu Univ, Dept Phys, Atmospher Res Lab, Varanasi 221005, Uttar Pradesh, India;
2.Nanyang Technol Univ, Sch Elect & Elect Engn EEE, Singapore 639815, Singapore;
3.Shiv Nadar Univ, Sch Nat Sci, Dept Phys, Dadri 203207, Uttar Pradesh, India;
4.Chapman Univ, Schmid Coll Sci & Technol, Earth & Environm Sci, Orange, CA 92866 USA;
5.Banaras Hindu Univ, Dept Geophys, Varanasi 221005, Uttar Pradesh, India;
6.Weizmann Inst Sci, Dept Earth & Planetary Sci, IL-76100 Rehovot, Israel
推荐引用方式
GB/T 7714
Kumar, Sarvan,Kumar, Sanjay,Kaskaoutis, D. G.,et al. Meteorological, atmospheric and climatic perturbations during major dust storms over Indo-Gangetic Basin[J],2015,17:15-31.
APA Kumar, Sarvan.,Kumar, Sanjay.,Kaskaoutis, D. G..,Singh, Ramesh P..,Singh, Rajeev K..,...&Singh, Abhay K..(2015).Meteorological, atmospheric and climatic perturbations during major dust storms over Indo-Gangetic Basin.AEOLIAN RESEARCH,17,15-31.
MLA Kumar, Sarvan,et al."Meteorological, atmospheric and climatic perturbations during major dust storms over Indo-Gangetic Basin".AEOLIAN RESEARCH 17(2015):15-31.
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