Arid
DOI10.1016/j.rse.2015.10.031
Strengths and weaknesses of multi-year Envisat ASAR backscatter measurements to map permanent open water bodies at global scale
Santoro, Maurizio1; Wegmueller, Urs1; Lamarche, Celine2; Bontemps, Sophie2; Defoumy, Pierre2; Arino, Olivier3
通讯作者Santoro, Maurizio
来源期刊REMOTE SENSING OF ENVIRONMENT
ISSN0034-4257
EISSN1879-0704
出版年2015
卷号171页码:185-201
英文摘要

The mapping of water bodies at global scale has been undertaken primarily using multi-spectral optical Earth Observation data. Limitations of optical data associated with non-uniform and temporally variable spectral signatures suggested investigating alternative approaches towards a more consistent and reliable detection of water bodies. Multi-year (2005-2012) observations of SAR backscattered intensities at moderate resolution from the Envisat Advanced Synthetic Aperture Radar (ASAR) instrument were used in this study to generate an indicator of open permanent water bodies (SAR-WBI) for the year 2010 time frame and for all land surfaces excluding Antarctica and the Greenland ice sheet A first map of potential water bodies with a spatial resolution of 150 m was obtained with a global detection algorithm based on a set of thresholds applied to multi-temporal metrics of the SAR backscatter (temporal variability, TV, and minimum backscatter, MB). Local refinements were then used to reduce systematic commission and omission errors (4.6% of the total area mapped) due to the similarity of TV and MB over open water bodies and other land surface types primarily in cold and arid environments. The refinement rules are here explained by means of a detailed signature analysis of the SAR backscatter in such environments. The accuracy of the SAR-WBI was 80% when compared against 2078 manually interpreted footprints with a size of 150 x 150 m(2). Omission errors were primarily observed along coast- and shorelines whereas commission errors were associated with (i) ephemeral water bodies, (ii) seasonally inundated areas, and (iii) an incorrect choice of the local refinement. (C) 2015 Elsevier Inc All rights reserved.


英文关键词Water body SAR Backscatter Envisat ASAR C-band Land cover
类型Article
语种英语
国家Switzerland ; Belgium ; Italy
收录类别SCI-E
WOS记录号WOS:000366787600016
WOS关键词WIND SCATTEROMETER DATA ; C-BAND SAR ; SURFACE-WATER ; SIZE DISTRIBUTION ; LAND SURFACES ; SOIL-MOISTURE ; RADAR ; RESOLUTION ; LAKES ; RETRIEVAL
WOS类目Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/190218
作者单位1.GAMMA Remote Sensing, CH-3073 Gumlingen, Switzerland;
2.Catholic Univ Louvain, Earth & Life Inst, B-1348 Louvain, Belgium;
3.European Space Agcy, ESRIN, I-00044 Frascati, Italy
推荐引用方式
GB/T 7714
Santoro, Maurizio,Wegmueller, Urs,Lamarche, Celine,et al. Strengths and weaknesses of multi-year Envisat ASAR backscatter measurements to map permanent open water bodies at global scale[J],2015,171:185-201.
APA Santoro, Maurizio,Wegmueller, Urs,Lamarche, Celine,Bontemps, Sophie,Defoumy, Pierre,&Arino, Olivier.(2015).Strengths and weaknesses of multi-year Envisat ASAR backscatter measurements to map permanent open water bodies at global scale.REMOTE SENSING OF ENVIRONMENT,171,185-201.
MLA Santoro, Maurizio,et al."Strengths and weaknesses of multi-year Envisat ASAR backscatter measurements to map permanent open water bodies at global scale".REMOTE SENSING OF ENVIRONMENT 171(2015):185-201.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Santoro, Maurizio]的文章
[Wegmueller, Urs]的文章
[Lamarche, Celine]的文章
百度学术
百度学术中相似的文章
[Santoro, Maurizio]的文章
[Wegmueller, Urs]的文章
[Lamarche, Celine]的文章
必应学术
必应学术中相似的文章
[Santoro, Maurizio]的文章
[Wegmueller, Urs]的文章
[Lamarche, Celine]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。