Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023337 |
Synergies for Soil Moisture Retrieval Across Scales From Airborne Polarimetric SAR, Cosmic Ray Neutron Roving, and an In Situ Sensor Network | |
Fersch, B.1; Jagdhuber, T.2; Schroen, M.3; Voelksch, I1; Jaeger, M.2 | |
2018-11-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:11页码:9364-9383 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | The consistent determination of soil moisture across scales is a persistent challenge in hydrology. Several measurement methods exist at distinct scales, each of which is challenging in terms of data processing, removal of vegetation and surface effects, and calibration. While in situ measurements are trusted at the point scale, distributed sensor networks extend the areal representation to the field scale. At this scale, also cosmic ray neutron sensing (CRNS) has become an established method to derive volume-averaged, root zone soil moisture over several tens of hectometers, but the signal is often biased due to biomass water. With airborne synthetic aperture radar (SAR)remote sensing, it is possible to cover regional scales, but the method is limited to the topmost soil layer and sensitive to vegetation parameters. In this study, the performance and synergistic potential of these complementary methods is investigated for the determination of soil moisture within a 55-km(2) Alpine foothill river catchment in Southern Germany. The individual approaches are evaluated and brought into synergy for a 9-ha grassland and several other locations within the catchment. The results indicate that the sensor network data provide valuable information to calibrate the mobile CRNS rover, and to optimize the vegetation removal within the polarimetric SAR retrieval algorithm. The root-mean-square errors for polarimetric synthetic aperture radar soil permittivity are 9.32 with the standard agriculture approach, 4.29 with the semi-stand-alone approach, and 0.31 with the sensor network optimized approach. Furthermore, the CRNS soil moisture product was improved by considering the remotely sensed cross-polarized backscatter product as a biomass water proxy. |
英文关键词 | soil moisture scales SoilNet polarimetric SAR cosmic ray neutron rover synergy |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000453369400044 |
WOS关键词 | SYNTHETIC-APERTURE RADAR ; WATER CONTENT ; SURFACE ; PROBES ; OBSERVATORIES ; CALIBRATION ; BIOMASS |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/20989 |
专题 | 资源环境科学 |
作者单位 | 1.Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Garmisch Partenkirchen, Germany; 2.Microwaves & Radar Inst, German Aerosp Ctr, Wessling, Germany; 3.UFZ Helmholtz Ctr Environm Res, Dept Monitoring & Explorat Techrolo, Leipzig, Germany |
推荐引用方式 GB/T 7714 | Fersch, B.,Jagdhuber, T.,Schroen, M.,et al. Synergies for Soil Moisture Retrieval Across Scales From Airborne Polarimetric SAR, Cosmic Ray Neutron Roving, and an In Situ Sensor Network[J]. WATER RESOURCES RESEARCH,2018,54(11):9364-9383. |
APA | Fersch, B.,Jagdhuber, T.,Schroen, M.,Voelksch, I,&Jaeger, M..(2018).Synergies for Soil Moisture Retrieval Across Scales From Airborne Polarimetric SAR, Cosmic Ray Neutron Roving, and an In Situ Sensor Network.WATER RESOURCES RESEARCH,54(11),9364-9383. |
MLA | Fersch, B.,et al."Synergies for Soil Moisture Retrieval Across Scales From Airborne Polarimetric SAR, Cosmic Ray Neutron Roving, and an In Situ Sensor Network".WATER RESOURCES RESEARCH 54.11(2018):9364-9383. |
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