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| 黄、渤海表层海温对台风过程响应数值试验 | |||||
作者：高郭平 文章来源：ilib.cn 点击数： 更新时间：2007-3-22  |
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黄、渤海表层海温对台风过程响应数值试验Numerical Experiment of SST Response to Typhoon Pro cessin Yellow Sea and Bohai Sea<<青岛海洋大学学报（自然科学版） >>2001年02期高郭平 , 鲍献文 , 李磊 , 苏洁 根据黄、渤海夏季由台风引起的异常海温的主要特点，构造一个简单而典型的台风过程模型，利用“近海异常海温数值预报模式”对海表层温度进行了数值试验，对台风过程中引起异常海温的各因子进行了定量分析，给出台风中心及其附近各点由各因子引起的变温率变化。试验表明，在台风作用下，冷水抽吸是引起异常低温的主要原因，大风夹卷的贡献占第二位，蒸发潜热的作用也不容忽视。数值模拟还清晰地显示出台风所引起的左弱右强的不对称降温效应以及表层暖水向外输运并在台风边缘下沉的现象。另外，还对近海异常海温预报模式的几个关键性问题及模式需改进之处进行了讨论。 A simple and typical typhoon process was constructed a ccordingto the primary feature of the SSTA caused by Typhoon in the Yellow Se a and the Bohai Sea. In this paper, an off-shore SSTA numerical forecasting mo del was employed to simulate the SST during a typhoon process in this area to fu rther quantitatively analyze the cause of SSTA in summer. The SST changes caused by different possible factors in typhoon center and its adjacent points were gi ven as well. The test showed that in the region disturbed by typhoon, cool water pumping was the main cause of SST's great decrease, wind entrainment played a s econd role; the effect of vaporing latent heat could not be ignored. Asymmetry t emperature decease effect (stronger to the right) and the phenomena of surface w arm water's outward transportation and downwelling at the edge caused by typhoon was clearly shown in the test. In addition, some key problems about the model a re disscussed and some aspects in which the model needs to be improved are menti oned in the third section. 关键词： 黄 , 渤海 , 表层海温 , 台风过程 , 冷水抽吸 , 风夹卷 |
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