A Comprehensive Evaluation of Microwave Emissivity and Brightness Temperature Sensitivities to Soil Parameters Using Qualitative and Quantitative Sensitivity Analyses
文献类型：期刊论文
| 作者 | Ma, Chunfeng1,2; Li, Xin1,3; Wang, Jing4; Wang, Chen5; Duan, Qingyun5; Wang, Weizhen1 |
| 刊名 | IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 55期号:2页码:1025-1038 |
| 关键词 | Advanced integral equation model global sensitivity analysis passive microwave remote sensing soil moisture (SM) uncertainty |
| ISSN号 | 0196-2892 |
| DOI | 10.1109/TGRS.2016.2618903 |
| 通讯作者 | Li, Xin(lixin@lzb.ac.cn) |
| 英文摘要 | Passive microwave remote sensing has experienced significant success for soil moisture (SM) inversion. However, quantifying the uncertainties caused by soil parameter sensitivities has not attracted sufficient attention. Although local sensitivity analysis (SA) has been used to describe parameter sensitivity in the past, it fails to quantify parameter sensitivities, especially interactions, for nonlinear microwave emission models. This paper presents a comprehensive evaluation that combines physically based emission models and various global SA algorithms to evaluate parameter sensitivity. All the algorithms exhibit highly consistent sensitivity measures, which means a reliable SA result is obtained. The results indicate that the sums of the main sensitivity indices of SM and surface roughness parameters-root-mean-square height (RMSH) and correlation length-are greater than 0.92 and 0.95 for emissivity and brightness temperature (TB), respectively. Furthermore, we find that: 1) the parameter probability distributions have little effect on the sensitivity measures; 2) the SM sensitivity decreases and the RMSH sensitivity increases as the frequency increases and the incidence angle decreases; and 3) the SM is more sensitive on V-polarized than on H-polarized emissivity and TB, while the RMSH is much more sensitive on the polarization index. The presented global SA quantitatively explains the optimal frequency, incidence angle, and polarization for SM inversion and extends the parameter SA for microwave emission models to a more general framework, as well as provides an implication for bare soil emission modeling and SM inversion. |
| 收录类别 | SCI |
| WOS关键词 | BAND RADIOMETER MEASUREMENTS ; MOISTURE RETRIEVAL ; AMSR-E ; ROUGH SURFACES ; MODEL ; ALGORITHM ; VEGETATION ; INDEXES ; SMEX02 ; AIEM |
| WOS研究方向 | Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS类目 | Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000392391800032 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557481 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Li, Xin |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Remote Sensing Gansu Prov, Northwest Inst Ecoenvironm & Resources, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Heihe Remote Sensing Expt Res Stn, Lanzhou 730000, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.China Meteorol Adm, Key Lab Arid Climat Change & Reducing Disaster Ga, Lanzhou Inst Arid Meteorol, Lanzhou 730000, Peoples R China 5.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Chunfeng,Li, Xin,Wang, Jing,et al. A Comprehensive Evaluation of Microwave Emissivity and Brightness Temperature Sensitivities to Soil Parameters Using Qualitative and Quantitative Sensitivity Analyses[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,2017,55(2):1025-1038. |
| APA | Ma, Chunfeng,Li, Xin,Wang, Jing,Wang, Chen,Duan, Qingyun,&Wang, Weizhen.(2017).A Comprehensive Evaluation of Microwave Emissivity and Brightness Temperature Sensitivities to Soil Parameters Using Qualitative and Quantitative Sensitivity Analyses.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,55(2),1025-1038. |
| MLA | Ma, Chunfeng,et al."A Comprehensive Evaluation of Microwave Emissivity and Brightness Temperature Sensitivities to Soil Parameters Using Qualitative and Quantitative Sensitivity Analyses".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 55.2(2017):1025-1038. |
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来源：寒区旱区环境与工程研究所
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