摘要
本文采用一个非线性约化重力海洋模式对南海表层水温（ＳＳＴ）年循环过程进行了数值研究，探讨了南海表层水温年循环形成和维持的动力学和热力学机制·模拟结果表现出与观测分析相一致的年循环变化阶段性和空间结构，并发现南海ＳＳＴ年循环的阶段性是海面动力强迫和热力强迫共同作用的结果；南海上层海洋的热力平衡有着明显的季节特征。
A nonlinear reduced-gravity oceanic model was applied to simulate the annual cycle in sea sur- face temperature in the South China Sea. Dynamic and thermodynamic mechanisms for formation and mainte- nance on the annual cycle were documented in series of numerical experiments forced by observational wind stresses and surface heat fluxes. The influences caused by changes in the external forcing functions and in the parameterization of entrainment occurring at the bottom of the upper mixed layer were investigated in this pa- per. Results showed that the variation stage and the spatial structure similar to observed climatology in the South China Sea had been achieved. It was found that the annual cycle was attributed to both wind stirring and surface heating. Moreover , the thermal balance in the upper layer in the South China Sea was strong sea- sonal time-dependent.
出处
《海洋学报》
CAS
CSCD
北大核心
1998年第4期25-37,共13页
基金
中国气象局气候研究开放实验室和国家自然科学基金
关键词
南海
表层水温
年循环
水温
数值模拟
Sea surface temperature in the South China Sea ,annual cycle ,reduced-gravity model
