热带海洋学报 ›› 2009, Vol. 28 ›› Issue (5): 56-65.doi: 10.11978/j.issn.1009-5470.2009.05.056cstr: 32234.14.j.issn.1009-5470.2009.05.056

所属专题: 海上丝绸之路专题

• 海洋物理学 • 上一篇    下一篇

一个高分辨率太平洋-印度洋海盆环流模式的初步结果

莫慧尔1,2 , 俞永强1, 刘海龙1, 林鹏飞1    

  1. 1.中国科学院大气物理研究所(IAP)大气科学和地球流体力学数值模拟国家重点实验室(LASG), 北京 100029; 2. 中国科学院研究生院, 北京 100049
  • 收稿日期:2009-04-30 修回日期:2009-07-03 出版日期:2009-11-10 发布日期:2009-10-10
  • 作者简介:莫慧尔(1985—),女,广东省肇庆市人,硕士研究生,主要从事海气相互作用与气候变化研究。
  • 基金资助:

    中国科学院知识创新工程项目(KZCX2-YW-214);国家自然科学基金项目(40675049)

Preliminary results from a high resolution Pacific-Indian basin-wide ocean general circulation model

O Hui-er1,2, YU Yong-qiang1, Liu Hai-long1, Lin Peng-fei1   

  1. 1. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics, CAS, Beijing 100029, China; 2. Graduate Univ. of CAS, Beijing 100049, China
  • Received:2009-04-30 Revised:2009-07-03 Online:2009-11-10 Published:2009-10-10
  • About author:莫慧尔(1985—),女,广东省肇庆市人,硕士研究生,主要从事海气相互作用与气候变化研究。
  • Supported by:

    中国科学院知识创新工程项目(KZCX2-YW-214);国家自然科学基金项目(40675049)

摘要:

利用LASG/IAP发展的一个0.25°×0.25°高分辨率太平洋-印度洋海盆环流模式,初步分析了模式在太平洋区域的模拟结果,并与海洋同化资料以及前人的研究结果作比较,检验此模式对该区域平均气候态、年际变化的模拟能力。分析表明,模式较好地再现了海表温度(SST)分布、赤道温跃层和纬向流结构、赤道流系分布形态、海表高度以及正压流函数空间分布特征;同时,对显著的El Ni?o和La Ni?a事件的模拟等方面与Simple Ocean Data Assimilation(SODA)2.0.2版本结果相近。此外,模式模拟北赤道流(NEC)分叉点位置的季节和年际变化以及吕宋海峡流量的年际变化与已有研究结果基本一致。进一步分析还发现,在年际尺度上,NEC分叉点位置和吕宋海峡流量与ENSO密切相关。

关键词: 北赤道流分叉, 吕宋海峡流量, 平均态, 年际变化, 高分辨率模式

Abstract:

In order to evaluate the ability of a high resolution Pacific-Indian basin ocean general circulation model to simulate the climatology and inteannual variability, we analyzed preliminarily the simulation results of the model in this paper, and compared them with the ocean assimilation data set and previous research works. Analyses show that the simulation results of SST distribution, structure of equatorial thermocline and zonal current, distributional pattern of equatorial current system, spatial distribution characteristics of SSH and barotropic stream function and El Nino and La Nina events are approximate to that of SODA ocean assimilation data set. Besides, the seasonal and interannaul variability of the North Equatorial Current (NEC) bifurcation agrees well with the previous study. Furthermore, our study reveal that the latitude of NEC bifurcation and Luzon Strait transport are intimately associated with ENSO cycle on the interannual timescale.

Key words: North Equatorial Current (NEC) bifurcation, Luzon Strait transport, climatology, interannual variability, high resolution model