摘要
利用中二层非线性原始方程海洋模式，研究海洋在自身不同热力结构下对热带气旋的响应。计算结果表明，初始混合层（ML）深度和层结强度对海表温（SST）和ML深度变化起着十分重要的作用。初始ML深度对海流量值影响较大，层结强度则较小。东海陆架区特殊的海洋热力结构，极易造成SST下降。海洋对7002号台风响应的模拟结果与观测资料较一致。
In the case of considering the ocean's thermal structure, i. e., the ocean's mi-xed layer (ML) depth, stratification intensity and the vertical lapse rate of the 10-wer layer temperature, the two-layer nonlinear primitive equation ocean model desc-ribed in Part Ⅰ is applied to study the response of the ocean to a tropical cyclone(TC). Numerical experiments indicate that the initial ML depth and straitificationintensity have a substantial impact on the changes of sea surface temperature (SST)and ML depth. The initial ML depth has a relatively large effect on the value ofthe current, whereas the initial straitification intensity has little influence on it.The distribution of ML depth in the East China Sea, especially the special thermalstructure on the continental shelf facilitates the drop of SST. Numerical simulation of the response of the ocean to the Typhoon 7002 wascarried out by considering not only the moving speed, direction, position and inten-sity of Typhoon 7002, but also the real thermal structure of the ocean itself. Nu-merical calculation indicating tliat the scope, extent and shap of SST drop are fairlyconsistent with .the observation data, shows that the treatment of the physical proc-esses of tlie ocean model are reasonable.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1995年第5期455-459,共5页
Oceanologia Et Limnologia Sinica
基金
国家"八五"科技攻关906项目!07专题
