Comparison of RIAMOM and MOM in Modeling the East Sea/Japan Sea Circulation
Comparison of RIAMOM and MOM in Modeling the East Sea/Japan Sea Circulation
复制标题
DOI：
10.4217/opr.2003.25.3.287
复制
发表时间：
2003-09
影响因子：
--
通讯作者：
Ho Jin Lee;J. Yoon;H. Kawamura;Hyoun-Woo Kang
中科院分区：
文献类型：
--
作者：
Ho Jin Lee;J. Yoon;H. Kawamura;Hyoun-Woo Kang
采用RIAM海洋模型RIAMOM（自由面原始海洋模型）模拟了东海/日本海水团环流的季节变化，并将GFDL-MOM1（地球物理流体动力学实验室模块化海洋模型，1.1版，以下简称MOM）与GDEM（广义数字环境模型）数据进行了比较。两种模式似乎都成功地再现了东海/日本海环流的独特特征，如沿日本海岸流动的NB（近岸分支），沿朝鲜海岸向北流动的EKWC（东朝鲜暖流），以及沿朝鲜/俄罗斯海岸向西南流动的NKCC/LCC（朝鲜冷流/利曼冷流）。在东海/日本海流场的真实模拟中，RIAMOM表现出比MOM更好的性能；RIAMOM在沿海地区产生了更多的整流，例如，比MOM更窄更强的NKCC/LCC。但模型结果与GDEM数据在水质量计算上存在明显差异；两种模式都显示出对50m以下的温度过高和盐度过低的趋势；所模拟的温跃层和盐跃层的扩散形式比GDEM资料所显示的要多。
The seasonal variations in the circulation of the water mass in the East Sea/Japan Sea have been simulated using a free surface primitive ocean model, RIAMOM (RIAM Ocean Model), comparing the results from GFDL-MOM1 (Geophysical Fluid Dynamics Laboratory Modular Ocean Model, version 1.1, hereafter MOM) with the GDEM (Generalized Digital Environmental Model) data. Both models appear to successfully reproduce the distinct features of circulation in the East Sea/Japan Sea, such as the NB (Nearshore Branch) flowing along the Japanese coast, the EKWC (East Korean Warm Current) flowing northward along the Korean coast, and the NKCC/LCC (North Korean Cold Current/Liman Cold Current) flowing southwestward along Korean/Russian coast. RIAMOM has shown better performance, compared to MOM, in terms of the realistic simulation of the flow field in the East Sea/Japan Sea; RIAMOM has produced more rectified flows on the coastal region, for example, the narrower and stronger NKCC/LCC than MOM has. There is however obvious differences between the model results and the GDEM data in terms of the calculation of the water mass; both models have shown a tendency to overpredict temperature and underpredict salinity below 50m; more diffusive forms of thermocline and halocline have been simulated than noted in GDEM data.