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引用本文:朱超,史剑,陶爱峰,刘经东.“苏拉”和“达维”双台风过程中台风浪和海温的数值模拟[J].海洋科学,2019,43(7):1-11.
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“苏拉”和“达维”双台风过程中台风浪和海温的数值模拟
朱超1, 史剑2, 陶爱峰1, 刘经东2
1.河海大学海岸灾害及防护教育部重点实验室, 江苏 南京 210098;2.国防科技大学 气象海洋学院, 江苏 南京 211101
摘要:
本文基于FVCOM-SWAVE耦合模型,以双台风“苏拉”和“达维”的台风过程为例,研究了台风过程中海浪和海温的变化,通过与高度计和Argo资料的对比,发现耦合模型能较准确的模拟出有效波高和海表面温度。由于双台风风场相互作用,风场结构和最大风速位置发生改变,影响着有效波高的分布,台风“苏拉”产生的最大有效波高位于台风后侧。海表面温度的降低与风场、浪场分布密切相关,强风强浪处的降温现象更明显,“苏拉”产生的降温区域位于路径附近,“达维”产生的降温区域位于路径右侧。台风对海表面温度的降低与初始的混合层厚度、温跃层强度存在相关性,具体表现为初始的混合层越薄、温跃层强度越大,降温越明显。
关键词:  双台风  有效波高  海表面温度
DOI:10.11759/hykx20181205003
分类号:P731.11
基金项目:国家自然科学基金(51579091,41676014)
Numerical simulation of typhoon waves and sea temperatures during Typhoons “Saola” and “Damrey”
ZHU Chao1, SHI Jian2, TAO Ai-feng1, LIU Jing-dong2
1.Key Laboratory of Coastal Disaster and Defense, Ministry of Education, Hohai University, Nanjing 210098, China;2.College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China
Abstract:
Based on the FVCOM-SWAVE coupling model, in this paper, the variation of ocean wave and sea surface temperature during the typhoon process of double typhoons "saola" and "Damrey" is studied. By comparing altimeter data with Argo data, it was found that the coupling model accurately simulated both parameters. Due to the interaction between the two typhoons' wind fields, the structure of the wind field, and the position of maximum wind speed change (which affected the distribution of significant wave heights), the maximum significant wave height generated by typhoon "Saola" was located behind the typhoon. The decrease in sea surface temperature was closely related to the distribution of the wind and wave fields; this cooling was apparent in the strong winds and waves. The cooling area generated by "Saola" was located near the path and cooling area generated by "Damrey" on the right side of the path. The decrease in sea surface temperature caused by the typhoons was correlated with the initial thickness of the mixed layer and the initial thermocline gradient. This manifested as a trend wherein the thinner the initial mixed layer and the stronger the gradient of thermocline, the more apparent the temperature drop.
Key words:  clouble typhoons  significant wave height  sea surface temperature
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