Soil Moisture Mapping Using Combined Active/Passive Microwave Observations Over the East of the Netherlands
文献类型：期刊论文
| 作者 | van der Velde, Rogier1; Salama, Mhd. Suhyb1; Eweys, Omar Ali1; Wen, Jun2; Wang, Qiang1 |
| 刊名 | IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 8期号:9页码:4355-4372 |
| ISSN号 | 1939-1404 |
| 关键词 | Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E) combined active/passive microwave phased array L-band synthetic aperture radar (PALSAR) scanning SAR (ScanSAR) soil moisture |
| DOI | 10.1109/JSTARS.2014.2353692 |
| 通讯作者 | van der Velde, Rogier(r.vandervelde@utwente.nl) |
| 英文摘要 | A coarse resolution soil moisture product is downscaled to 1, 5, and 10 km using synthetic aperture radar (SAR) observations acquired over the east of the Netherlands. The combination of phased array L-band SAR (PALSAR) backscatter and VUA-NASA C-band Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E) soil moisture product is adopted to mimic the radar/radiometer setup as will be available from NASA's soil moisture active passive (SMAP) mission. The validation of retrievals is based on measurements collected by a sparse network of 20 stations distributed across 50 x 75 km study area selected as one of the key validation sites for the SMAP soil moisture products. Reasonable agreements between the measurements and soil moisture retrieved at 1-, 5-, and 10-km resolution are found that lead to coefficients of determination of 0.37, 0.36, and 0.36, respectively. The retrievals, however, severely overestimate the measured soil moisture, which is attributed to the well-known positive bias of the selected AMSR-E product. After bias-correction, root mean squared differences reach as low as 0.046 m(3) m(-3) for individual locations and are 0.067, 0.068, and 0.069 m(3) m(-3) on average for the soil moisture retrieved at 1-, 5-, and 10-km resolutions, respectively. These error levels do not satisfy SMAP's targeted accuracy of 0.04 m(3) m(-3), but the radar/radiometer setup as well as the characterization of the soil moisture conditions representative are not optimal. On the other hand, it is demonstrated that the sequence of soil moisture maps does capture valuable hydrological and hydrometeorological information. |
| 收录类别 | SCI |
| WOS关键词 | TIBETAN PLATEAU ; SPATIAL VARIABILITY ; RADAR BACKSCATTER ; HIGH-RESOLUTION ; RETRIEVAL ; SURFACE ; PRODUCTS ; CORN ; MODEL ; UNCERTAINTIES |
| WOS研究方向 | Engineering ; Physical Geography ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS类目 | Engineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| WOS记录号 | WOS:000367323300014 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557140 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | van der Velde, Rogier |
| 作者单位 | 1.Univ Twente, Fac Geoinformat Sci & Earth Observat, NL-7500 AE Enschede, Netherlands 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | van der Velde, Rogier,Salama, Mhd. Suhyb,Eweys, Omar Ali,et al. Soil Moisture Mapping Using Combined Active/Passive Microwave Observations Over the East of the Netherlands[J]. IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,2015,8(9):4355-4372. |
| APA | van der Velde, Rogier,Salama, Mhd. Suhyb,Eweys, Omar Ali,Wen, Jun,&Wang, Qiang.(2015).Soil Moisture Mapping Using Combined Active/Passive Microwave Observations Over the East of the Netherlands.IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,8(9),4355-4372. |
| MLA | van der Velde, Rogier,et al."Soil Moisture Mapping Using Combined Active/Passive Microwave Observations Over the East of the Netherlands".IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 8.9(2015):4355-4372. |
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来源：寒区旱区环境与工程研究所
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