Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.rse.2008.09.006 |
Retrieving photometric properties of desert surfaces in China using the Hapke model and MISR data | |
Wu, Yunzhao1,2,3; Gong, Peng2,3,4; Liu, Qiang2,3; Chappell, Adrian5 | |
通讯作者 | Wu, Yunzhao |
来源期刊 | REMOTE SENSING OF ENVIRONMENT
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ISSN | 0034-4257 |
EISSN | 1879-0704 |
出版年 | 2009 |
卷号 | 113期号:1页码:213-223 |
英文摘要 | The retrieval of photometric properties of desert surfaces is an important first step in the parameterization of land surface components of regional dust emission and global radiation models and in Earth system modeling. In this study, the values of Hapke’s photometric parameters (omega, h, b, c, B0, and (theta) over bar) were retrieved from the Multi-angle Imaging SpectroRadiometer (MISR) instrument at locations in China’s deserts. Four pixels represented the typical surface characteristics of the Taklimakan Desert, sand dunes of Kumtag Desert, relatively smooth areas of the Kumtag Desert and the aeolian sandy soil of Loulan. In contrast to earlier studies, we found that the retrieved parameter values were largely affected by the initial value. To combat this problem we used a Monte Carlo method with physical constraints and a conformity indicator to ensure physically meaningful inversion. The results showed that the angular domain of MISR observations was sufficiently large to determine confidently the values of Hapke’s photometric parameters with the exception of the opposition effect width (h). Retrieved values for the single scattering albedo (omega) and macroscopic roughness ((theta) over bar) were consistent with qualitative observations about the structure and composition of the surface material and the nature of the dune forms, respectively. At Loulan, where the surface was smoother than other sites, retrieved values exhibited the strongest backward scattering. These results indicated that at the sensor scale, a rough surface (e.g., dunes) does not necessarily mean more backward scattering than a smooth surface. This finding has significant implications for empirical methods (e.g., using the normalized index of backward-scattered radiance minus forward-scattered radiance as an indicator to indicate surface roughness) which should be used carefully for analyzing surface roughness from remote sensing data. Future research is needed to 1) understand how surface roughness at the sub-pixel scale modifies the angular characteristics of reflectance and to 2) find practical methods for rapid whole image processing for mapping the photometric parameters. (C) 2008 Elsevier Inc. All rights reserved. |
英文关键词 | Asymmetry factor China Desert Hapke model Inversion MISR Monte Carlo Multi-angle remote sensing Surface roughness Sub-pixel |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; USA ; England |
收录类别 | SCI-E |
WOS记录号 | WOS:000261993100018 |
WOS关键词 | BIDIRECTIONAL REFLECTANCE SPECTROSCOPY ; SOIL SPECTRAL REFLECTANCE ; LIGHT-SCATTERING ; ROUGHNESS ; ABSORPTION ; PARAMETERS ; ANALOGS ; DUST |
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 |
来源机构 | 北京师范大学 ; 南京大学 ; University of California, Berkeley |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/162422 |
作者单位 | 1.Nanjing Univ, Sch Geophys & Oceanog Sci, Nanjing 210093, Peoples R China; 2.Chinese Acad Sci, Inst Remote Sensing Applicat, State Key Lab Remote Sensing Sci, Beijing 100864, Peoples R China; 3.Beijing Normal Univ, Beijing 100875, Peoples R China; 4.Univ Calif Berkeley, Div Ecosyst Sci, Berkeley, CA 94720 USA; 5.Univ Salford, Sch Environm & Life Sci, Ctr Environm Syst Res, Salford M5 4WT, Lancs, England |
推荐引用方式 GB/T 7714 | Wu, Yunzhao,Gong, Peng,Liu, Qiang,et al. Retrieving photometric properties of desert surfaces in China using the Hapke model and MISR data[J]. 北京师范大学, 南京大学, University of California, Berkeley,2009,113(1):213-223. |
APA | Wu, Yunzhao,Gong, Peng,Liu, Qiang,&Chappell, Adrian.(2009).Retrieving photometric properties of desert surfaces in China using the Hapke model and MISR data.REMOTE SENSING OF ENVIRONMENT,113(1),213-223. |
MLA | Wu, Yunzhao,et al."Retrieving photometric properties of desert surfaces in China using the Hapke model and MISR data".REMOTE SENSING OF ENVIRONMENT 113.1(2009):213-223. |
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