干旱区生态环境知识资源中心(Arid): Atmospheric Dynamics from Synoptic to Local Scale During an Intense Frontal Dust Storm over the Sistan Basin in Winter 2019

Arid

DOI	10.3390/geosciences9100453
	Atmospheric Dynamics from Synoptic to Local Scale During an Intense Frontal Dust Storm over the Sistan Basin in Winter 2019
	Kaskaoutis, Dimitris G.; Francis, Diana; Rashki, Alireza; Chaboureau, Jean-Pierre; Dumka, Umesh C.
通讯作者	Kaskaoutis, DG
来源期刊	GEOSCIENCES
EISSN	2076-3263
出版年	2019
卷号	9 期号:10
英文摘要	The Sistan Basin has been recognized as one of the most active dust sources and windiest desert environments in the world. Although the dust activity in Sistan maximizes during the summer, rare but intense dust storms may also occur in the winter. This study aims to elucidate the atmospheric dynamics related to dust emission and transport, dust-plume characteristics, and impacts on aerosol properties and air quality during an intense dust storm over Sistan in February 2019. The dust storm was initiated by strong northerly winds (similar to 20 ms(-1)) associated with the intrusion of a cold front from high latitudes. The upper-level potential vorticity (PV)-trough evolved into a cut-off low in the mid and upper troposphere and initiated unstable weather over Afghanistan and northern Pakistan. At the surface, density currents emanating from deep convective clouds and further strengthened by downslope winds from the mountains, caused massive soil erosion. The passage of the cold front reduced the temperature by similar to 10 degrees C and increased the atmospheric pressure by similar to 10 hPa, while the visibility was limited to less than 200 m. The rough topography played a major role in modulating the atmospheric dynamics, wind field, dust emissions, and transport pathways. Meso-NH model simulates large amounts of columnar mass dust loading (> 20 g m(-2)) over Sistan, while the intense dust plume was mainly traveling below 2 km and increased the particulate matter (PM10) concentrations up to 1800 mu g m(-3) at Zabol. The dust storm was initially moving in an arc-shaped pathway over the Sistan Basin and then it spread away. Plumes of dust covered a large area in southwest Asia, reaching the northern Arabian Sea, and the Thar desert one to two days later, while they strongly affected the aerosol properties at Karachi, Pakistan, by increasing the aerosol optical depth (AOD > 1.2) and the coarse-mode fraction at similar to 0.7.
英文关键词	frontal dust storm upper-level trough cut-off low dust aerosols Sistan
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000498271100049
WOS关键词	AEROSOL OPTICAL-PROPERTIES ; LOW-LEVEL JET ; DESERT DUST ; MIDDLE-EAST ; MINERAL DUST ; CASPIAN SEA ; ARABIAN SEA ; REGIONAL MODEL ; SOUTHWEST ASIA ; HUMAN HEALTH
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333936
作者单位	[Kaskaoutis, Dimitris G.] Natl Observ Athens, Inst Environm Res & Sustainable Dev, Athens 15236, Greece; [Francis, Diana] New York Univ Abu Dhabi, NYUAD Inst, Abu Dhabi 129188, U Arab Emirates; [Rashki, Alireza] Ferdowsi Univ Mashhad, Dept Desert & Arid Zones Management, Mashhad 91735, Razavi Khorasan, Iran; [Chaboureau, Jean-Pierre] Univ Toulouse, Lab Aerol, UPS, CNRS, F-31400 Toulouse, France; [Dumka, Umesh C.] Aryabhatta Res Inst Observ Sci, Naini Tal 263001, India
推荐引用方式 GB/T 7714	Kaskaoutis, Dimitris G.,Francis, Diana,Rashki, Alireza,et al. Atmospheric Dynamics from Synoptic to Local Scale During an Intense Frontal Dust Storm over the Sistan Basin in Winter 2019[J],2019,9(10).
APA	Kaskaoutis, Dimitris G.,Francis, Diana,Rashki, Alireza,Chaboureau, Jean-Pierre,&Dumka, Umesh C..(2019).Atmospheric Dynamics from Synoptic to Local Scale During an Intense Frontal Dust Storm over the Sistan Basin in Winter 2019.GEOSCIENCES,9(10).
MLA	Kaskaoutis, Dimitris G.,et al."Atmospheric Dynamics from Synoptic to Local Scale During an Intense Frontal Dust Storm over the Sistan Basin in Winter 2019".GEOSCIENCES 9.10(2019).