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“选尺度资料同化”方法在海洋资料同化中的应用研究; Application of Scale-Selective Data Assimilation in Oceanic Data Assimilation
王品强
学位类型硕士
导师彭世球
2016
学位专业物理海洋学
关键词选尺度资料同化 地转流 海洋资料同化 卫星高度计
摘要本研究将“选尺度资料同化”(Scale Selective data assimilation,简称SSDA)方法应用到海洋资料同化中,对卫星高度计资料反演的海表地转流进行了同化试验。SSDA方法的实现过程可分为以下三个步骤:首先,将区域模式模拟的正压流场进行尺度分离,即利用地转平衡关系将地转流(对应大尺度)分离出来,余下部分即为非地转流部分(对应小尺度);然后,利用卫星高度计资料反演的地转流对模式地转流进行同化调整,而保留小尺度的非地转流不变;最后,将调整后的地转流与原非地转流结合,得到新的海表流场并返回到模式中。SSDA方法的特点为利用卫星观测信息只调整模式的大尺度流场(地转流),而同时使流场的小尺度特征得以保留和发展。
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The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) ocean model. The SSDA method is implemented as follows: 1) decomposing decomposingdecomposing decomposing model currcurr ents into geostrophic currents (corresponding largeents into geostrophic currents (corresponding large ents into geostrophic currents (corresponding large ents into geostrophic currents (corresponding large ents into geostrophic currents (corresponding largeents into geostrophic currents (corresponding largeents into geostrophic currents (corresponding large ents into geostrophic currents (corresponding largeents into geostrophic currents (corresponding largeents into geostrophic currents (corresponding largeents into geostrophic currents (corresponding large ents into geostrophic currents (corresponding large ents into geostrophic currents (corresponding large ents into geostrophic currents (corresponding largeents into geostrophic currents (corresponding largeents into geostrophic currents (corresponding large ents into geostrophic currents (corresponding largeents into geostrophic currents (corresponding large ents into geostrophic currents (corresponding large ents into geostrophic currents (corresponding largeents into geostrophic currents (corresponding large ents into geostrophic currents (corresponding largeents into geostrophic currents (corresponding largeents into geostrophic currents (corresponding large-scale components) through scale components) through scale components) through scale components) through scale components) through scale components) through scale components) through scale components) through scale components) through scale components) through scale components) through geostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding small geostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding small geostrophic balance and the ageostrophic currents (corresponding small geostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding small geostrophic balance and the ageostrophic currents (corresponding small geostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding small geostrophic balance and the ageostrophic currents (corresponding small geostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding small geostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding small geostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding small geostrophic balance and the ageostrophic currents (corresponding smallgeostrophic balance and the ageostrophic currents (corresponding small geostrophic balance and the ageostrophic currents (corresponding small geostrophic balance and the ageostrophic currents (corresponding small -scale scale scale components); 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The to model. The to model. The to model. The basic idea basic idea basic idea of SSDA of SSDA of SSDA of SSDA of SSDA is to adj is to adj is to adjis to adjis to adj ust model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite model’s large scale components by assimilating satellite altimeter data while allowing the model itself toaltimeter data while allowing the model itself to altimeter data while allowing the model itself to altimeter data while allowing the model itself toaltimeter data while allowing the model itself to altimeter data while allowing the model itself to altimeter data while allowing the model itself to altimeter data while allowing the model itself to altimeter data while allowing the model itself toaltimeter data while allowing the model itself toaltimeter data while allowing the model itself toaltimeter data while allowing the model itself to altimeter data while allowing the model itself to altimeter data while allowing the model itself to altimeter data while allowing the model itself to altimeter data while allowing the model itself to freely develop small scale freely develop small scale freely develop small scale freely develop small scale freely develop small scale freely develop small scale freely develop small scale freely develop small scale freely develop small scale freely develop small scale freely develop small scale freely develop small scale freely develop small scale freely develop small scale freely develop small scale features featuresfeatures featuresfeatures.
文献类型学位论文
条目标识符http://ir.scsio.ac.cn/handle/344004/14694
专题学位论文(硕士)
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王品强. “选尺度资料同化”方法在海洋资料同化中的应用研究, Application of Scale-Selective Data Assimilation in Oceanic Data Assimilation[D],2016.
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