Coarse scale in situ albedo observations over heterogeneous snow-free land surfaces and validation strategy: A case of MODIS albedo products preliminary validation over northern China
文献类型：期刊论文
| 作者 | Wu, Xiaodan1; Wen, Jianguang1; Xiao, Qing1; Liu, Qiang1; Peng, Jingjing1; Dou, Baocheng1; Li, Xiuhong1; You, Dongqin1; Tang, Yong1; Liu, Qinhuo1 |
| 刊名 | Remote Sensing of Environment
 |
| 出版日期 | 2016 |
| 卷号 | 184页码:25-39 |
| 通讯作者 | Wen, Jianguang (wenjg@radi.ac.cn) |
| 英文摘要 | To evaluate and improve the quality of coarse-pixel land surface albedo products, validation with ground measurements of albedo is crucial over the spatially and temporally heterogeneous land surface. The performance of albedo validation depends on the quality of ground-based albedo measurements at a corresponding coarse-pixel scale, which can be conceptualized as the "truth" value of albedo at coarse-pixel scale. In this paper, a sampling strategy based on multiple nodes using wireless sensor network (WSN) technology, WSN-based albedo observation, is proposed. The WSN nodes are distributed in an optimal layout determined by a sequential selection method based on the representativeness of each sensor. The WSN dataset in this study includes 6 nodes. A method of weighting is used to upscale WSN node albedo to a coarse-pixel scale. The weights for each node are calculated with the ordinary least squares (OLS) linear regression method. Compared with the multiple scale validation strategy, the dataset of WSN albedo "truth" at the coarse-pixel scale reveals a good quality both in stability and continuity. Application of this strategy is exemplified by validation of the MODIS 1 km albedo product. © 2016 Elsevier Inc. |
| 学科主题 | Environmental Sciences & Ecology; Remote Sensing; Imaging Science & Photographic Technology |
| 类目[WOS] | Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:20162502508515 |
| 源URL | [http://ir.radi.ac.cn/handle/183411/39153]  |
| 专题 | 遥感与数字地球研究所_SCI/EI期刊论文_期刊论文 |
| 作者单位 | 1. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 2.100101, China 3. Joint Center for Global Change Studies, Beijing 4.100875, China 5. University of Chinese Academy of Sciences, Beijing 6.100049, China 7. Beijing Normal University, Beijing 8.100875, China 9. Peking University, Beijing 10.100871, China |
| 推荐引用方式 GB/T 7714 | Wu, Xiaodan,Wen, Jianguang,Xiao, Qing,et al. Coarse scale in situ albedo observations over heterogeneous snow-free land surfaces and validation strategy: A case of MODIS albedo products preliminary validation over northern China[J]. Remote Sensing of Environment,2016,184:25-39. |
| APA | Wu, Xiaodan.,Wen, Jianguang.,Xiao, Qing.,Liu, Qiang.,Peng, Jingjing.,...&Liu, Qinhuo.(2016).Coarse scale in situ albedo observations over heterogeneous snow-free land surfaces and validation strategy: A case of MODIS albedo products preliminary validation over northern China.Remote Sensing of Environment,184,25-39. |
| MLA | Wu, Xiaodan,et al."Coarse scale in situ albedo observations over heterogeneous snow-free land surfaces and validation strategy: A case of MODIS albedo products preliminary validation over northern China".Remote Sensing of Environment 184(2016):25-39. |
入库方式： OAI收割
来源：遥感与数字地球研究所
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