兰州大学机构库
Direct Comparison and Triple Collocation: Which Is More Reliable in the Validation of Coarse-Scale Satellite Surface Albedo Products
Wu, Xiaodan1,2; Xiao, Qing2,3; Wen, Jianguang2,3,4; You, Dongqin2,3
2019-05-27
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
Volume124Issue:10Pages:5198-5213
AbstractA rigorous and reliable validation is the prerequisite and basis to properly understand the accuracy of satellite surface albedo products. However, the representativeness error of point scale in situ measurements, which mainly results from the spatial mismatch between in situ and satellite measurements as well as the surface heterogeneities, generally hinders an effective validation of satellite surface albedo products based on the conventional direct comparison method. Triple collocation technique has been recognized as a powerful tool to estimate the errors of satellite products without requiring the truth. Here, we evaluated the effectiveness of both the direct comparison and extended triple collocation (ETC) methods in tackling with the representativeness error of in situ measurements and characterizing the performances of satellite surface albedo products (MCD43A3 [V006], GLASS, and NPP VIIRS albedos) given whether the in situ-based pixel-scale albedo was available or not. The ETC method is shown to be advantageous over the direct comparison based on single point in situ measurements, because it is less affected by representativeness errors. However, it shall not substitute for the direct comparison method based on in situ-based pixel-scale albedo measurements, because its effectiveness in solving representativeness errors and estimating product errors is very limited and dependent on the choice of the data in the triplets. Furthermore, the ETC technique cannot be used to estimate the true physical errors of satellite surface albedo products.
KeywordValidation albedo heterogeneity representativeness errors spatial scale ETC
DOI10.1029/2018JD029937
Indexed BySCIE
Language英语
Funding ProjectFundamental Research Funds for the Central Universities[lzujbky-2018-45]
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000471237200004
PublisherAMER GEOPHYSICAL UNION
Original Document TypeArticle
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lzu.edu.cn/handle/262010/294590
Collection兰州大学
Corresponding AuthorXiao, Qing
Affiliation1.Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou, Gansu, Peoples R China
2.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.JCGCS, Beijing, Peoples R China
First Author AffilicationCollege of Earth Environmental Sciences
Recommended Citation
GB/T 7714
Wu, Xiaodan,Xiao, Qing,Wen, Jianguang,et al. Direct Comparison and Triple Collocation: Which Is More Reliable in the Validation of Coarse-Scale Satellite Surface Albedo Products[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(10):5198-5213.
APA Wu, Xiaodan,Xiao, Qing,Wen, Jianguang,&You, Dongqin.(2019).Direct Comparison and Triple Collocation: Which Is More Reliable in the Validation of Coarse-Scale Satellite Surface Albedo Products.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(10),5198-5213.
MLA Wu, Xiaodan,et al."Direct Comparison and Triple Collocation: Which Is More Reliable in the Validation of Coarse-Scale Satellite Surface Albedo Products".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.10(2019):5198-5213.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Altmetrics Score
Google Scholar
Similar articles in Google Scholar
[Wu, Xiaodan]'s Articles
[Xiao, Qing]'s Articles
[Wen, Jianguang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu, Xiaodan]'s Articles
[Xiao, Qing]'s Articles
[Wen, Jianguang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu, Xiaodan]'s Articles
[Xiao, Qing]'s Articles
[Wen, Jianguang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
No comment.
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.