DOI: 10.1175/JCLI-D-18-0403.1
Scopus记录号: 2-s2.0-85061800709
论文题名: Long-range transport of mineral dust to the northeast Indian Ocean: Regional versus remote sources and the implications
作者: Banerjee P. ; Satheesh S.K. ; Moorthy K.K. ; Nanjundiah R.S. ; Nair V.S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2019
卷: 32, 期: 5 起始页码: 1525
结束页码: 1549
语种: 英语
英文关键词: Dust or dust storms
; Regional models
Scopus关键词: Atmospheric thermodynamics
; Climate models
; Optical properties
; Remote sensing
; Storms
; Atmospheric transport
; Dust or dust storms
; Indo-Gangetic Plains
; Long range transport
; North-East Indian Ocean
; Regional climate model simulation
; Regional model
; Satellite remote sensing data
; Dust
英文摘要: Synergizing satellite remote sensing data with vertical profiles of atmospheric thermodynamics and regional climate model simulations, we investigate the relative importance, transport pathways, and seasonality of contribution of dust from regional (Thar Desert and adjoining arid regions) and remote (southwest Asia and northeast Africa) sources over the northeast Indian Ocean [i.e., the Bay of Bengal (BOB)]. We show that while over the northern BOB dust from the regional sources contribute more than 50% to the total dust load during the southwest monsoon period (June-September), interestingly; the remote dust sources dominate rest of the year. On the other hand, over the southern BOB, dust transported from the remote-source regions dominate throughout the year. During June, the dry elevated layer (at altitudes between 850 and 700 hPa) of dust, transported across the Indo-Gangetic Plain to the northern BOB, arises primarily from the Thar Desert. Dust from remote sources in the far west reaches the southern BOB after traversing over and around the southern Indian Peninsula. Since dust from these distinct source regions have different mineral composition (hence optical properties) and undergo distinct changes during atmospheric transport, it is important to understand source-specific dust contribution and transport pathways to address dust-climate feedback. © 2019, American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117194
Appears in Collections: 气候变化与战略
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Recommended Citation:
Banerjee P.,Satheesh S.K.,Moorthy K.K.,et al. Long-range transport of mineral dust to the northeast Indian Ocean: Regional versus remote sources and the implications[J]. Journal of Climate,2019-01-01,32(5)