Application of a recursive filter to a three-dimensional variational ocean data assimilation system
文献类型：期刊论文
| 作者 | Liu Ye1,2; Yan Changxiang1 |
| 刊名 | Advances in atmospheric sciences
 |
| 出版日期 | 2010-03-01 |
| 卷号 | 27期号:2页码:293-302 |
| 关键词 | Recursive filter Background error covariance The ocean variational assimilation system (ovals) |
| ISSN号 | 0256-1530 |
| DOI | 10.1007/s00376-009-8112-9 |
| 通讯作者 | Liu ye(liuye@mail.iap.ac.cn) |
| 英文摘要 | In order to improve the efficiency of the ocean variational assimilation system (ovals), which has been widely used in various applications, an improved ovals (ovals2) is developed based on the recursive filter (rf) algorithm. the first advantage of ovals2 is that memory storage can be substantially reduced in practice because it implicitly computes the background error covariance matrix; the second advantage is that there is no inversion of the background error covariance by preconditioning the control variable. for comparing the effectiveness between ovals2 and ovals, a set of experiments was implemented by assimilating expendable bathythermograph (xbt) and argo data into the tropical pacific circulation model. the results show that the efficiency of ovals2 is much higher than that of ovals. the computational time and the computer storage in the assimilation process were reduced by 83% and 77%, respectively. additionally, the corresponding results produced by the rf are almost as good as those obtained by ovals. these results prove that ovals2 is suitable for operational numerical oceanic forecasting. |
| WOS关键词 | TROPICAL PACIFIC-OCEAN ; GENERAL-CIRCULATION MODEL ; WATER-VAPOR OBSERVATIONS ; STATISTICAL-ANALYSIS ; OBJECTIVE ANALYSIS ; NUMERICAL ASPECTS ; BACKGROUND ERROR ; SEA ; COVARIANCES ; SCHEME |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000274542800009 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2415325 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Liu Ye |
| 作者单位 | 1.Chinese Acad Sci, Int Ctr Climate & Environm Sci, Inst Atmospher Phys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu Ye,Yan Changxiang. Application of a recursive filter to a three-dimensional variational ocean data assimilation system[J]. Advances in atmospheric sciences,2010,27(2):293-302. |
| APA | Liu Ye,&Yan Changxiang.(2010).Application of a recursive filter to a three-dimensional variational ocean data assimilation system.Advances in atmospheric sciences,27(2),293-302. |
| MLA | Liu Ye,et al."Application of a recursive filter to a three-dimensional variational ocean data assimilation system".Advances in atmospheric sciences 27.2(2010):293-302. |
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来源：中国科学院大学
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