Soil Moisture Mapping Using Combined Active/Passive Microwave Observations Over the East of the Netherlands (SCI)
文献类型：期刊论文
| 作者 | van der Velde R.; Salama M. S.; Eweys O. A.; Wen J.; Wang Q. |
| 刊名 | Ieee Journal of Selected Topics in Applied Earth Observations and Remote Sensing
 |
| 出版日期 | 2015 |
| 卷号 | 8期号:9页码:4355-4372 |
| 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 |
| 语种 | 英语 |
| 源URL | [http://ir.casnw.net/handle/362004/27529]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | van der Velde R.,Salama M. S.,Eweys O. A.,et al. Soil Moisture Mapping Using Combined Active/Passive Microwave Observations Over the East of the Netherlands (SCI)[J]. Ieee Journal of Selected Topics in Applied Earth Observations and Remote Sensing,2015,8(9):4355-4372. |
| APA | van der Velde R.,Salama M. S.,Eweys O. A.,Wen J.,&Wang Q..(2015).Soil Moisture Mapping Using Combined Active/Passive Microwave Observations Over the East of the Netherlands (SCI).Ieee Journal of Selected Topics in Applied Earth Observations and Remote Sensing,8(9),4355-4372. |
| MLA | van der Velde R.,et al."Soil Moisture Mapping Using Combined Active/Passive Microwave Observations Over the East of the Netherlands (SCI)".Ieee Journal of Selected Topics in Applied Earth Observations and Remote Sensing 8.9(2015):4355-4372. |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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