A New Hybrid Vertical Coordinate Ocean Model and Its Application in the Simulation of the Changjiang Diluted Water

作     者：张文静 朱首贤 董礼先 张长宽 

作者机构：College of Physical and Environmental OceanographyOcean University of China Institute of MeteorologyPLA University of Science and Technology State Key Laboratory of Satellite Ocean Environment DynamicsSecond Institute of Oceanography College of Ocean EngineeringHohai University 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2011年第25卷第2期

页      面：327-338页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 

主　　题：hybrid vertical coordinate baroclinic pressure gradient Eulerian-Lagrangian method the Changjiang diluted water numerical simulation 

摘      要：Based on the analysis of the advantages and disadvantages of some vertical coordinates applied in the calculation of the Changjiang diluted water （CDW）, a new hybrid vertical coordinate is designed, which uses σ coordinate for current and σ-z coordinate for salinity. To combine the current and salinity, the Eulerian-Lagrangian method is used for the salinity calculation, and the baroclinic pressure gradient （BPG） is calculated on the salinity sited layers. The new hybrid vertical coordinate is introduced to the widely used model of POM （Princeton Ocean Model） to make a new model of POM-σ-z. The BPG calculations of an ideal case show that POM-σ-z model brings smaller error than POM model does. The simulations of CDW also show that POM-σ-z model is better than POM model on simulating the salinity and its front.