Implementation of Two-Stream Emission Model for L-Band Retrievals on the Tibetan Plateau
文献类型：期刊论文
| 作者 | Wu, Xiaojing |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 14期号:3页码:17 |
| 关键词 | Soil Moisture Active Passive (SMAP) L-band microwave radiometry thawed and frozen soil conditions liquid water content grassland Tibetan Plateau |
| DOI | 10.3390/rs14030494 |
| 通讯作者 | Wu, Xiaojing(wuxj@igsnrr.ac.cn) |
| 英文摘要 | This study assesses the suitability of the two-stream microwave emission model in simulating brightness temperature (T-B(p)) and retrieving liquid water content (theta(liq)) at L-band in combination with the four-phase dielectric model for both thawed and frozen soil. Both single (SCA) and double (DCA) channel algorithms are adopted using both ground-based ELBARA-III and spaceborne SMAP measurements conducted in a Tibetan grassland site. The ELBARA-III measured T-B(p) are smaller than the SMAP measurements in the warm season due to a lower value of average theta(liq) presented within the ELBARA-III footprint. The two-stream emission model configured with SMAP vegetation and surface roughness parameterization underestimates both ELBARA-III and SMAP measured T-B(p) at horizontal polarization in the cold season, and overestimates the vertical polarized measurements (T-B(V)) in the warm season. Implementation of a new surface roughness and vegetation parameterization resolves above deficiency, and the simulations capture better large-scale SMAP measurements in comparison to these performed for the ELBARA-III footprint. The dynamics of in situ theta(liq) are better reproduced by retrievals using the SCA based on T-B(V) measurements (SCA-V), whereby the SCA-V retrievals using the SMAP ascending overpass measurements shows the best results with an unbiased root-mean-square error (ubRMSE) of 0.035 m(3) m(-3) that outperforms the SMAP mission specification. |
| WOS关键词 | SOIL-MOISTURE RETRIEVAL ; DEPENDENT DIELECTRIC MODEL ; FREEZE-THAW PROCESS ; MICROWAVE EMISSION ; SURFACE-ROUGHNESS ; VEGETATION ; TEMPERATURE ; PARAMETERIZATION ; SCATTERING ; FROZEN |
| 资助项目 | National Natural Science Foundation of China[41901317] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000754578100001 |
| 出版者 | MDPI |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/171208]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wu, Xiaojing |
| 作者单位 | Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Synth Res Ctr Chinese Ecosyst Res Network, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Xiaojing. Implementation of Two-Stream Emission Model for L-Band Retrievals on the Tibetan Plateau[J]. REMOTE SENSING,2022,14(3):17. |
| APA | Wu, Xiaojing.(2022).Implementation of Two-Stream Emission Model for L-Band Retrievals on the Tibetan Plateau.REMOTE SENSING,14(3),17. |
| MLA | Wu, Xiaojing."Implementation of Two-Stream Emission Model for L-Band Retrievals on the Tibetan Plateau".REMOTE SENSING 14.3(2022):17. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。