Effects of sample density on the assimilation performance of an explicit four-dimensional variational data assimilation method

被引：0
作者：
XiangJun Tian
ZhengHui Xie
机构：
[1] Chinese Academy of Sciences,ICCES/LASE, Institute of Atmospheric Physics
来源：
Science in China Series D: Earth Sciences | 2009年 / 52卷
关键词：
POD/SVD-E4DVAR; data assimilation; sample density;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The concepts of sample sphere radius and sample density are proposed in this paper to help illustrate that different vector transformations result in diverse sample density with the same sample ensemble, which finally affects their assimilation performance. Several numerical experiments using a one-dimensional (1-D) soil water equation and synthetic observations are conducted to evaluate this new theory in land data assimilation.
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页码：1849 / 1856
页数：7
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