干旱区生态环境知识资源中心(Arid): Reproducibility assessment and uncertainty quantification in subjective dust source mapping

Arid

DOI	10.1016/j.aeolia.2019.05.004
	Reproducibility assessment and uncertainty quantification in subjective dust source mapping
	Sinclair, Samantha N.; LeGrand, Sandra L.
通讯作者	Sinclair, Samantha N.
来源期刊	AEOLIAN RESEARCH
ISSN	1875-9637
EISSN	2212-1684
出版年	2019
卷号	40 页码:42-52
英文摘要	Accurate dust-source characterizations are critical for effectively modeling dust storms. A previous study developed an approach to manually map dust plume-head point sources in a geographic information system (GIS) framework using Moderate Resolution Imaging Spectroradiometer (MODIS) imagery processed through dust-enhancement algorithms. With this technique, the location of a dust source is digitized and recorded if an analyst observes an unobscured plume head in the imagery. Because airborne dust must be sufficiently elevated for overland dust-enhancement algorithms to work, this technique may include up to 10km in digitized dust-source location error due to downwind advection. However, the potential for en-or in this method due to analyst subjectivity has never been formally quantified. In this study, we evaluate a version of the methodology adapted to better enable reproducibility assessments amongst multiple analysts to determine the role of analyst subjectivity on recorded dust source location error. Four analysts individually mapped dust plumes in Southwest Asia and Northwest Africa using five years of MODIS imagery collected from 15 May to 31 August. A plume-source location is considered reproducible if the maximum distance between the analyst point source markers for a single plume is <= 10 km. Results suggest analyst marker placement is reproducible; however, additional analyst subjectivity-induced error (7 km determined in this study) should be considered to fully characterize locational uncertainty. Additionally, most of the identified plume heads (> 90%) were not marked by all participating analysts, which indicates dust source maps generated using this technique may differ substantially between users.
英文关键词	Mineral dust Dust source detection MODIS Remote sensing GIS Reproducibility
类型	Article
语种	英语
国家	USA
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000488653300005
WOS关键词	DESERT DUST ; STORMS ; MODIS ; IDENTIFICATION ; CLIMATOLOGY ; VARIABILITY ; TRANSPORT ; HEALTH ; IMPACT ; COVER
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/2XILL650/213904
作者单位	US Army Engineer Res & Dev Ctr ERDC, 72 Lyme Rd, Hanover, NH 03755 USA
推荐引用方式 GB/T 7714	Sinclair, Samantha N.,LeGrand, Sandra L.. Reproducibility assessment and uncertainty quantification in subjective dust source mapping[J],2019,40:42-52.
APA	Sinclair, Samantha N.,&LeGrand, Sandra L..(2019).Reproducibility assessment and uncertainty quantification in subjective dust source mapping.AEOLIAN RESEARCH,40,42-52.
MLA	Sinclair, Samantha N.,et al."Reproducibility assessment and uncertainty quantification in subjective dust source mapping".AEOLIAN RESEARCH 40(2019):42-52.