| A simplified land data assimilation scheme and its application to soil moisture experiments in 2002 (SMEX02) | |
| Pathmathevan, M; Koike, T; Li, X; Fujii, H | |
| 刊名 | WATER RESOURCES RESEARCH
 |
| 2003-12-05 | |
| 卷号 | 39期号:12页码:20 |
| 关键词 | data assimilation microwave soil moisture |
| ISSN号 | 0043-1397 |
| DOI | 10.1029/2003WR002124 |
| 通讯作者 | Pathmathevan, M() |
| 英文摘要 | The influences of vegetation and its spatial and temporal heterogeneity on the detection of soil moisture can be significant and may limit the applicability of satellite passive microwave sensors. Sensitivity analysis of an applied soil moisture algorithm using ground-based measurements can show where problems can arise and how they may be circumvented. This paper investigates a method of retrieving a one-dimensional soil moisture profile and the surface and canopy temperature, under the influence of different vegetations and dynamics, by integrating numerical models and passive microwave, visible, and near-infrared measurements via a novel application of data assimilation. The land surface scheme (LSS), which is at the heart of the present land data assimilation scheme (LDAS), is a biophysically based model (simplified biosphere model 2: SiB2) of soil, vegetative and atmospheric interactions. The ground-based microwave radiometer (GBMR) measurements, gathered over the soil moisture experiments in 2002 (SMEX02) in Iowa, were assimilated into the LSS via a radiative transfer model (RTM) using LDAS. Compared to open loop simulations, the results of LDAS are in better agreement with observations. |
| 收录类别 | SCI |
| WOS关键词 | MICROWAVE RADIOMETRY ; VEGETATION INDEXES ; SATELLITE DATA ; 1.4 GHZ ; MODEL ; POLARIZATION ; TEMPERATURE ; SIMULATION ; RETRIEVAL ; ALGORITHM |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
| WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:000187488500005 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2556827 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Pathmathevan, M |
| 作者单位 | 1.Univ Tokyo, Dept Civil Engn, Bunkyo Ku, Tokyo 1138656, Japan 2.Chinese Acad Sci, Cold & Arid REg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 3.JST, CREST, Kawaguchi, Saitama 3320012, Japan |
| 推荐引用方式 GB/T 7714 | Pathmathevan, M,Koike, T,Li, X,et al. A simplified land data assimilation scheme and its application to soil moisture experiments in 2002 (SMEX02)[J]. WATER RESOURCES RESEARCH,2003,39(12):20. |
| APA | Pathmathevan, M,Koike, T,Li, X,&Fujii, H.(2003).A simplified land data assimilation scheme and its application to soil moisture experiments in 2002 (SMEX02).WATER RESOURCES RESEARCH,39(12),20. |
| MLA | Pathmathevan, M,et al."A simplified land data assimilation scheme and its application to soil moisture experiments in 2002 (SMEX02)".WATER RESOURCES RESEARCH 39.12(2003):20. |
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