Regional assimilation of in situ observed soil moisture into the VIC model considering spatial variability

被引：9
作者：
Zhou, Jianhong [1 ,2 ]
Wu, Zhiyong [1 ,2 ]
He, Hai [1 ,2 ]
Wang, Fang [3 ]
Xu, Zhengguang [1 ,2 ]
Wu, Xiaotao [1 ,2 ]
机构：
[1] Hohai Univ, Inst Water Problems, Nanjing, Jiangsu, Peoples R China
[2] Hohai Univ, Coll Hydrol & Water Resources, Nanjing, Jiangsu, Peoples R China
[3] Hohai Univ, Editorial Dept Journal Water Resources Protect, Nanjing, Jiangsu, Peoples R China
来源：
HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES | 2019年 / 64卷 / 16期
基金：
中国国家自然科学基金;
关键词：
soil moisture; regional assimilation; VIC model; spatial variability; HYDROLOGICAL MODEL; ENSEMBLE; DROUGHT; ASCAT; EVAPOTRANSPIRATION; CLASSIFICATION; IMPLEMENTATION; VALIDATION; SIMULATION; STREAMFLOW;
D O I：
10.1080/02626667.2019.1662024
中图分类号：
TV21 [水资源调查与水利规划];
学科分类号：
081501 ;
摘要：
In order to improve the soil moisture (SM) modelling capacity, a regional SM assimilation scheme based on an empirical approach considering spatial variability was constructed to assimilate in situ observed SM data into a hydrological model. The daily variable infiltration capacity (VIC) model was built to simulate SM in the Upper Huai River Basin, China, with a resolution of 5 km ? 5 km. Through synthetic assimilation experiments and validations, the assimilated SM was evaluated, and the assimilation feedback on evapotranspiration (ET) and streamflow are analysed and discussed. The results show that the assimilation scheme improved the SM modelling capacity, both spatially and temporally. Moreover, the simulated ET was continually affected by changes in SM simulation, and the streamflow predictions were improved after applying the SM assimilation scheme. This study demonstrates the potential value of in situ observations in SM assimilation, and provides valuable ways for improving hydrological simulations.
引用
收藏
页码：1982 / 1996
页数：15
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