Ensemble data assimilation applied to an adaptive mesh ocean model
Ensemble data assimilation applied to an adaptive mesh ocean model
复制标题
应用于自适应网格海洋模型的集合数据同化
DOI:
10.1002/fld.4247
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发表时间:
2016-12
影响因子:
1.8
通讯作者:
Navon I. M.
中科院分区:
文献类型:
--
作者:
Du Juan;Zhu Jiang;Fang Fangxin;Pain C. C.;Navon I. M.
In this study, a first attempt has been made to introduce mesh adaptivity into the ensemble Kalman fiter (EnKF) method. The EnKF data assimilation system was established for an unstructured adaptive mesh ocean model (Fluidity, Imperial College London). The mesh adaptivity involved using high resolution mesh at the regions of large flow gradients and around the observation points in order to reduce the representativeness errors of the observations. The use of adaptive meshes unavoidably introduces difficulties in the implementation of EnKF. The ensembles are defined at different meshes. To overcome the difficulties, a supermesh technique is employed for generating a reference mesh. The ensembles are then interpolated from their own mesh onto the reference mesh. The performance of the new EnKF data assimilation system has been tested in the Munk gyre flow test case. The discussion of this paper will focus on (a) the development of the EnKF data assimilation system within an adaptive mesh model and (b) the advantages of mesh adaptivity in the ocean data assimilation model. Copyright © 2016 John Wiley & Sons, Ltd.
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影响因子:
3.2
作者:
Shu‐Chih Yang;E. Kalnay;B. Hunt
通讯作者:
Shu‐Chih Yang;E. Kalnay;B. Hunt
DOI:
10.3402/tellusa.v50i1.14514
发表时间:
1998
期刊:
Tellus A
影响因子:
--
作者:
A. Adcroft;D. Marshall
通讯作者:
A. Adcroft;D. Marshall
影响因子:
1.9
作者:
Christopher M. J. Baker;A. Buchan;C. Pain;P. Farrell;M. D. Eaton;P. Warner
通讯作者:
Christopher M. J. Baker;A. Buchan;C. Pain;P. Farrell;M. D. Eaton;P. Warner
DOI:
10.1111/j.1600-0870.2009.00417.x
发表时间:
2010-01
期刊:
Tellus A: Dynamic Meteorology and Oceanography
影响因子:
--
作者:
P. Sakov;G. Evensen;Laurent Bertino
通讯作者:
P. Sakov;G. Evensen;Laurent Bertino
DOI:
10.1142/p097
发表时间:
1999-04
期刊:
--
影响因子:
--
作者:
D. Haidvogel;A. Beckmann
通讯作者:
D. Haidvogel;A. Beckmann