| Reconstruction of eddies by assimilating satellite altimeter data into Princeton Ocean Model |
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| 作者姓名： | YIN Xunqiang QIAO Fangli XIA Changshui L&#; Xin'gang YANG Yongzeng |
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| 作者单位： | [1]College of Physical and Environmental Oceanography, Ocean University of China, Qingdao [2]First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China [3]Key Laboratory of Marine Science and Numerical Modeling （MASNUM）, State Oceanic Administration, Qingdao 266061, China |
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| 基金项目： | The Key Project of National Natural Science Foundation Basic Research Program of China (Argo973, Grant No. 2007CB816002);;special fund for fundamental scientific research under contract No. 2008G08;;the advanced programs of ministry of personnel for returness |
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| 摘 要： | An optimal interpolation assimilation model for satellite altimetry data is developed based on
Princeton Ocean Model (POM), which is applied in a quasi-global domain, by the method of
isotropic correlation between sea level anomaly (SLA) and sea temperature anomaly. The perfor-
mance of this assimilation model is validated by the modeled results of SLA and the current patterns.
Comparisons between modeling and satellite data show that both the magnitudes and distribution
patterns of the simulated SLA are improved by assimilation. The most signiˉcant improvement is
that meso-scale systems, e.g., eddies, are well reconstructed. The evolution of an eddy located in
the northwest Paciˉc Ocean is traced by using the assimilation model. Model results show that
during three months the eddy migrated southwestward for about 6 degrees before merging into the
Kuroshio. The three dimensional structure of this eddy on 12 August 2001 is further analyzed.
The strength of this warm, cyclonic eddy decreases with the increase of depth. The eddy shows
di?erent horizontal patterns at di?erent layers, and the SLA and temperature ˉelds agree with each
other well. This study suggests that this kind of data assimilation is economic and reliable for eddy
reconstruction, and can be used as a promising technique in further studies of ocean eddies as well
as other ˉne circulation structures.
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| 关 键 词： | 海洋卫星测高 数据模型 普林斯顿 旋涡 资料同化 吸收 重构 中尺度系统 |
| 收稿时间： | 9/2/2008 12:00:00 AM |
| 修稿时间： | 2008/12/30 0:00:00 |
Reconstruction of eddies by assimilating satellite altimeter data into Princeton Ocean Model |
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| YIN Xunqiang,QIAO Fangli,XIA Changshui,L&#; Xin''gang,YANG Yongzeng.Reconstruction of eddies by assimilating satellite altimeter data into Princeton Ocean Model[J].Acta Oceanologica Sinica,2010,29(1):1-11. |
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| Authors: | YIN Xunqiang QIAO Fangli XIA Changshui L&#; Xin'gang and YANG Yongzeng |
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| Institution: | 1. College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266003, China;First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Key Laboratory
2. First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Key Laboratory of Marine Science and Numerical Modeling MASNUM, State Oceanic Administration, Qingdao 266061, China |
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| Abstract: | An optimal interpolation assimilation model for satellite altimetry data is developed based on Princeton Ocean Model(POM),which is applied in a quasi-global domain,by the method of isotropic correlation between sea level anomaly(SLA) and sea temperature anomaly. The performance of this assimilation model is validated by the modeled results of SLA and the current patterns. Comparisons between modeling and satellite data show that both the magnitudes and distribution patterns of the simulated SLA are improved... |
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| Keywords: | data assimilation eddy numerical model optimal interpolation POM |
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