Simultaneous estimation of surface soil moisture and soil properties with a dual ensemble Kalman smoother (EI)
文献类型：期刊论文
| 作者 | Chu N.; Huang C.; Li X.; Du P. |
| 刊名 | Science China Earth Sciences
 |
| 出版日期 | 2015 |
| 卷号 | 58期号:12页码:2327-2339 |
| 英文摘要 | In this paper, a new state-parameter estimation approach is presented based on the dual ensemble Kalman smoother (DEnKS) and simple biosphere model (SiB2) to sequentially estimate both the soil properties and soil moisture profile by assimilating surface soil moisture observations. The Arou observation station, located in the upper reaches of the Heihe River in northwestern China, was selected to test the proposed method. Three numeric experiments were designed and performed to analyze the influence of uncertainties in model parameters, atmospheric forcing, and the models physical mechanics on soil moisture estimates. Several assimilation schemes based on the ensemble Kalman filter (EnKF), ensemble Kalman smoother (EnKS), and dual EnKF (DEnKF) were also compared in this study. The results demonstrate that soil moisture and soil properties can be simultaneously estimated by state-parameter estimation methods, which can provide more accurate estimation of soil moisture than traditional filter methods such as EnKF and EnKS. The estimation accuracy of the model parameters decreased with increasing error sources. DEnKS outperformed DEnKF in estimating soil moisture in most cases, especially where few observations were available. This study demonstrates that the DEnKS approach is a useful and practical way to improve soil moisture estimation. 2015, Science China Press and Springer-Verlag Berlin Heidelberg. |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.casnw.net/handle/362004/27086]  |
| 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 | Chu N.,Huang C.,Li X.,et al. Simultaneous estimation of surface soil moisture and soil properties with a dual ensemble Kalman smoother (EI)[J]. Science China Earth Sciences,2015,58(12):2327-2339. |
| APA | Chu N.,Huang C.,Li X.,&Du P..(2015).Simultaneous estimation of surface soil moisture and soil properties with a dual ensemble Kalman smoother (EI).Science China Earth Sciences,58(12),2327-2339. |
| MLA | Chu N.,et al."Simultaneous estimation of surface soil moisture and soil properties with a dual ensemble Kalman smoother (EI)".Science China Earth Sciences 58.12(2015):2327-2339. |
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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