南海海面高度季节变化的数值模拟
The numerical simulation of the seasonal variation of the sea surface height in the South China Sea
-
摘要: 比较POM模式模拟与观测(TOPEX/Poseidon高度计资料)的南海海面高度(SSH)的季节变化在空间分布上的一致性和差异.结果表明:本文使用的POM模式能较好地模拟南海SSH的季节变化;冬季与夏季,春季与秋季南海海面异常场形式完全相反,冬季Ekman输运造成在西海岸的堆积要比夏季在东海岸堆积更明显,而吕宋冷涡中心附近和吕宋海峡海面季节变化振幅最大;除春季以外,在南海绝大部分海域,海面高度的季节变化主要受风力的控制,南海海面热量通量对SSH的季节变化贡献约为20%,风应力对SSH的季节变化的贡献约为80%.Abstract: The consistency and difference of the seasonal variation of sea surface height (SSH) are analyzed and compared among the numerical model results (POM model) and the TOPEX/Poseidon satelliten observed data.It is shown that POM results of the seasonal variation of the SSH are quite similar with obsevation.The sea surface height anomaly (SSHA) field is completely opposite between winter and summer,as well as between spring and autumn.The pileup caused by Ekman transport is more obvious along the western shore in winter than the pileup along the eastern shore in summer.The maximum amplitude of seasonal oscillation of the SSH lies near the center of the Luzon cold eddy and Luzon Strait.Except spring,the SSH seasonal variation is controlled dominantly by wind the in larger area of the South China Sea.The contribution of sea surface buoyancy flux to the seasonal variation of the SSH is 20% of the total SSH variation.The contribution of wind stress to the SSH is about 80%.
-
Key words:
- South China Sea /
- sea surface height /
- seasonal variation /
- numerical simulation
-
FANG G,ZHAO B.A note on the main forcing of the notheastward flowing curent off the southeast China coast [J].Progess in Oceanography,1988,21: 307～318. 李荣凤,曾庆存,甘子钧.冬季南海暖流和台湾海峡海流的数值模拟[J].自然科学进展-国家重点实验室通讯,1993,3(1):21～25. CHAOS Y,SHAW P T,WANG J.Wind relaxation as a possible cause of the South China Sea Warm Current [J].Journal of Oceanography,1995,51: 111～112. 王佳.南海北部冬季逆风海流的一种模型[J].山东海洋学院学报,1985,15(3):22～31. 曾庆存,李荣凤,季仲贞,等.南海月平均流的计算[J].大气科学,1989,13(2):127～138. 李荣凤,黄企洲,王文质.南海上层海流的数值模拟[J].海洋学报,1994,16(4):13～22. 李立,吴日升,李燕初,等.TOPEX/POSIDON高度计浅海潮汐混淆的初步分析[J].海洋学报,1999,21(3):7～14. 李立,吴日升,郭小钢.南海的季节环流TOPEX/POSEITON高度计应用研究[J].海洋学报,2000,22(6):13～25. CHU P C,NATHAN L E,FAN Chen-wu.Dynamical mechanisms for the South China Sea seasonal circulation and thermohaline variabilities [J].J Phys Oceanogr,1999,29(11): 2 971～3 989. 徐锡祯,邱章,陈惠昌.南海水平环流概述[A].中国海洋湖沼学会水文气象学会学术会议论文集[C].北京:科学出版社,1980.137～145. 李薇,刘秦玉,杨海军.吕宋海峡海洋环流的基本特征[J].青岛海洋大学学报,1998,28(3):345～351. 刘秦玉,刘倬腾,郑世培,等.黑潮在吕宋海峡的形变及动力机制[J].青岛海洋大学学报,1996,26(4):413～419. 刘秦玉,杨海军,刘征宇.南海Sverdrup环流的季节变化特征[J].自然科学进展,2000,10(5):1 035～1 039. 杨海军,刘秦玉.南海上层水温分布的季节特征[J].海洋与湖沼,1998,29(5):501～507. LIU W T,XIE Xiao-su.Spacebased observations of the seasonal changes of South Asian monsoons and oceanic responses [J].Geophysical Res Let,1999,26(10): 1 473～1 476. GILLA,NIILER P.Theory of the sessonal variability in the ocean [J].Deep-Sea Res,1973,20: 141～177. -
计量
- 文章访问数: 799
- HTML全文浏览量: 6
- PDF下载量: 1810
- 被引次数: 0
下载:
