干旱区生态环境知识资源中心(Arid): New Inventory of Dust Emission Sources in Central Asia and Northwestern China Derived From MODIS Imagery Using Dust Enhancement Technique

Arid

DOI	10.1029/2020JD033382
	New Inventory of Dust Emission Sources in Central Asia and Northwestern China Derived From MODIS Imagery Using Dust Enhancement Technique
	Nobakht, Mohamad; Shahgedanova, Maria; White, Kevin
通讯作者	Shahgedanova, M (corresponding author), Univ Reading, Dept Geog & Environm Sci, Reading, Berks, England.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2021
卷号	126 期号:4
英文摘要	The first inventory of dust emission sources in Central Asia and northwestern China (35-50 degrees N, 50-100 degrees E) derived from the twice daily MODIS imagery from 2003 to 2012 is presented. A high-resolution (1 km) dust enhancement product was generated to produce maps of dust point sources (DPS), indicating geographical locations of the observed dust emissions, and gridded data sets of dust emission frequencies. About 13,500 DPS were detected over an area of similar to 5 x 10(6) km(2), however, their distribution was uneven. The highest frequency of DPS occurred in the northern and eastern Taklimakan, in the Aralkum, and in the regions, which were not widely reported in literature before, the Balkh delta in northern Afghanistan and the pre-Aral, from the northern Caspian coast to the Betpak-Dala desert in Kazakhstan. South of the Aral, DPS were mainly associated with fluvial features: drying lakes, dry river beds, alluvial deposits and agricultural activity which is closely linked to water availability in this arid region. In the pre-Aral and Balkhash-Junggar regions, land damaged by wildfire was the main source of dust. In China and eastern Kazakhstan dust emissions peaked in spring; in Central Asia and western Kazakhstan-in summer. The Aralkum was active throughout the year with a positive trend in emission frequency over the study period. Locations of DPS did not always correlate with high atmospheric optical depth (AOD) particularly west of the Aral and in the southern Taklimakan where few DPS were detected despite the high AOD values. This was attributed to dust transport from the upwind sources.
英文关键词	aerosol Central Asia deserts dust enhancement mineral dust MODIS
类型	Article
语种	英语
开放获取类型	Green Accepted, hybrid
收录类别	SCI-E
WOS记录号	WOS:000624348900051
WOS关键词	AEROSOL OPTICAL DEPTH ; MINERAL DUST ; STORMS ; BASIN ; TAJIKISTAN ; CLIMATE ; FREQUENCY ; DUSHANBE ; SAND
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350829
作者单位	[Nobakht, Mohamad; Shahgedanova, Maria; White, Kevin] Univ Reading, Dept Geog & Environm Sci, Reading, Berks, England; [Nobakht, Mohamad] Telespasio VEGA UK Ltd, Luton, Beds, England
推荐引用方式 GB/T 7714	Nobakht, Mohamad,Shahgedanova, Maria,White, Kevin. New Inventory of Dust Emission Sources in Central Asia and Northwestern China Derived From MODIS Imagery Using Dust Enhancement Technique[J],2021,126(4).
APA	Nobakht, Mohamad,Shahgedanova, Maria,&White, Kevin.(2021).New Inventory of Dust Emission Sources in Central Asia and Northwestern China Derived From MODIS Imagery Using Dust Enhancement Technique.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(4).
MLA	Nobakht, Mohamad,et al."New Inventory of Dust Emission Sources in Central Asia and Northwestern China Derived From MODIS Imagery Using Dust Enhancement Technique".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.4(2021).