| HAN Shuzong,FAN Yongbin,DONG Yangyang,WU Shuangquan. 2017. A study on the relationships between the wave height and the El Niño in the north area of the South China Sea. Acta Oceanologica Sinica, 36(5):44－50 |
| A study on the relationships between the wave height and the El Niño in the north area of the South China Sea |
| 南海北部海区波高与厄尔尼诺关系探究 |
| Received:June 07, 2016 |
| DOI：10.1007/s13131-017-1059-2 |
| Key words:South China Sea SWAN wave significant wave height El Niño |
| 中文关键词: 南海 SWAN 波浪 有效波高 厄尔尼诺 |
| 基金项目: |
| Author Name | Affiliation | E-mail | | HAN Shuzong | College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China | hansz@ouc.edu.cn | | FAN Yongbin | College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China | | | DONG Yangyang | College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China | | | WU Shuangquan | National Marine Information Center, State Oceanic Administration, Tianjin 300171, China | |
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| Abstract: |
| On the basis of the European Centre for Medium-range Weather Forecasts (ECMwF) 20 a wind field reanalysis data, the wave field of the north area of the South China Sea is calculated with the combination of the HIRHAM wind field model and the SWAN wave model. Then a significant wave height compared with the El Niño index to study the relationships between these variables. The following conclusions are drawn:(1) the wave height of the South China Sea has a strong seasonal variation, the wave height is much larger in winter than in summer; (2) in the South China Sea, the monthly average wave height of the north area has a negative correlation with the Niño3.4 index, most area of the South China Sea has a moderate correlation and the area between Taiwan Province of China and Philippines is highly correlated; and (3) in the strong El Niño years, the significant wave height in the north area of the South China Sea is significantly smaller than in other years; if the El Niño index variability is greater, the wave height decreases. In contrast, the significant wave height in the north area of the South China Sea is larger in the strong La Niña years. |
| 中文摘要: |
| 以欧洲中期天气预报中心的23年再分析风场数据为基础，采用HIRHAM风场模式和SWAN海浪模型对南海北部海域的波浪场进行推算，并将南海北部海域的有效波高与厄尔尼诺指数作对比，探究两者的关系，分析结论如下：（1）南海海域波高具有较强的季节性变化特征，冬季波高大于夏季波高；（2）南海北部海域月平均波高与Niño3.4指数呈负相关，大部分海域呈中度相关，台湾和菲律宾之间的部分海域呈高度相关；（3）在强厄尔尼诺年，南海北部海域的有效波高明显偏小，且厄尔尼诺指数变化越大，波高越小；反之，在强拉尼娜年，南海北部海域的有效波高较大。 |
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