干旱区生态环境知识资源中心(Arid): Evaluating the performance of high-resolution satellite imagery in detecting ephemeral water bodies over West Africa

Arid

DOI	10.1016/j.jag.2020.102218
	Evaluating the performance of high-resolution satellite imagery in detecting ephemeral water bodies over West Africa
	Mishra, Vikalp; Limaye, Ashutosh S.; Muench, Rebekke E.; Cherrington, Emil A.; Markert, Kel N.
通讯作者	Mishra, V
来源期刊	INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
ISSN	1569-8432
EISSN	1872-826X
出版年	2020
卷号	93
英文摘要	Pastoralism is a major occupation in Africa's Sahel region, which spans from Senegal in the west to Ethiopia in the east and has a semi-arid climate. Pastoralists from the region are usually nomadic, moving regularly in search of water and pasture, often for hundreds of kilometers. Traditionally, pastoralists have relied on historical knowledge and transhumance pathways to reach the water bodies (WB). Due to climatic conditions, a vast majority of the WBs in this region are small, sporadic, and ephemeral, therefore there is a need to map and frequently monitor water availability. Remote sensing observations can be used to complement current monitoring efforts. High-resolution near-daily imagery from the recently launched PlanetScope (PS) constellation of small satellites has the potential to complement the existing medium-resolution and infrequent but well established and extensively calibrated sensors like Landsat. The aim of this study is to investigate the performance and applicability of high-resolution PS data to detect and monitor WBs in the Ferlo region of West Africa, in comparison to Landsat-8 imagery. The results indicate that for cloud-free days, PS data was comparable (r > 0.88; ubRMSE < 0.01) to Landsat, but due to inadequate cloud masking, the results were poor for cloudy days (r < 0.49 and ubRMSE > 0.058). The PS images were able to detect nearly 95% of the WBs, whereas Landsat was able to identify only 32% at the water fraction threshold > 40%. Initial results from this study show that the high spatial and temporal resolution PS datasets show promise in monitoring WBs in arid regions of West Africa.
英文关键词	Remote sensing Ephemeral water body Landsat Planet Ferlo NIR
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000591912900005
WOS关键词	SURFACE-WATER ; LANDSAT TM ; PASTORAL MOBILITY ; LAKE DYNAMICS ; INDEX NDWI ; ETM PLUS ; CLASSIFICATION ; FERLO ; INFORMATION ; VARIABILITY
WOS类目	Remote Sensing
WOS研究方向	Remote Sensing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327621
作者单位	[Mishra, Vikalp; Muench, Rebekke E.; Cherrington, Emil A.; Markert, Kel N.] Univ Alabama, Earth Syst Sci Ctr, 320 Sparkman Dr, Huntsville, AL 35899 USA; [Mishra, Vikalp; Limaye, Ashutosh S.; Muench, Rebekke E.; Cherrington, Emil A.; Markert, Kel N.] Marshall Space Flight Ctr, NASA SERVIR Sci Coordinat Off, Huntsville, AL USA
推荐引用方式 GB/T 7714	Mishra, Vikalp,Limaye, Ashutosh S.,Muench, Rebekke E.,et al. Evaluating the performance of high-resolution satellite imagery in detecting ephemeral water bodies over West Africa[J],2020,93.
APA	Mishra, Vikalp,Limaye, Ashutosh S.,Muench, Rebekke E.,Cherrington, Emil A.,&Markert, Kel N..(2020).Evaluating the performance of high-resolution satellite imagery in detecting ephemeral water bodies over West Africa.INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION,93.
MLA	Mishra, Vikalp,et al."Evaluating the performance of high-resolution satellite imagery in detecting ephemeral water bodies over West Africa".INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION 93(2020).