干旱区生态环境知识资源中心(Arid): Evaluating the relative importance of northern African mineral dust sources using remote sensing

Arid

DOI	10.5194/acp-19-10525-2019
	Evaluating the relative importance of northern African mineral dust sources using remote sensing
	Bakker, Natalie L.1; Drake, Nick A.1; Bristow, Charlie S.2
通讯作者	Bakker, Natalie L.
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN	1680-7316
EISSN	1680-7324
出版年	2019
卷号	19 期号:16 页码:10525-10535
英文摘要	Northern African mineral dust provides the Amazon Basin with essential nutrients during the boreal winter months, when the trajectory of the Saharan dust plume is towards South America. This process, however, is still poorly understood. There is little knowledge of where the dust is coming from, and, thus, little information regarding the concentration of nutrients in the dust. This information is vital to assess the impact it will have on the Amazon. In order to further our understanding of the problem, this study analyses northern African dust sources of the boreal winter dust seasons between the years 2015 and 2017. It utilises high spatio-temporal resolution remote sensing data from SEVIRI, MODIS, VIIRS, and Sentinel-2 to identify dust sources, classify them according to a geomorphic dust source scheme, and quantify the relative importance of source regions by calculating the total dust mass they produce. Results indicate that palaeolakes emit the most dust, with the Bodele Depression as the single largest dust source region. However, alluvial deposits also produce a substantial amount of dust. During the boreal winter dust seasons of 2015-2017, similar to 36 % of the total dust mass emitted from northern Africa was associated with alluvial deposits, yet this geomorphic category has been relatively understudied to date. Furthermore, sand deposits were found to produce relatively little dust, in contrast to the results of other recent studies.
类型	Article
语种	英语
国家	England
开放获取类型	Green Submitted, Green Accepted, gold
收录类别	SCI-E
WOS记录号	WOS:000482004300003
WOS关键词	SAHARAN DUST ; DESERT DUST ; AEROSOL ; VARIABILITY ; DEPRESSION ; CLIMATE ; WIND ; LAND ; IRON
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	University of London
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214477
作者单位	1.Univ London, Kings Coll London, Dept Geog, London, England; 2.Univ London, Birkbeck Coll, Dept Earth & Planetary Sci, London, England
推荐引用方式 GB/T 7714	Bakker, Natalie L.,Drake, Nick A.,Bristow, Charlie S.. Evaluating the relative importance of northern African mineral dust sources using remote sensing[J]. University of London,2019,19(16):10525-10535.
APA	Bakker, Natalie L.,Drake, Nick A.,&Bristow, Charlie S..(2019).Evaluating the relative importance of northern African mineral dust sources using remote sensing.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(16),10525-10535.
MLA	Bakker, Natalie L.,et al."Evaluating the relative importance of northern African mineral dust sources using remote sensing".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.16(2019):10525-10535.