南海海浪场与厄尔尼诺的相关性分析  

The relationship between El Nino and wave field in the South China Sea

作　　者：郭随平[1] 庄卉[1] 郑崇伟[2] 贾本凯[3] 陈志禄[3] 王健[2] 

机构地区：[1]解放军理工大学气象学院江苏南京211101 [2]92538部队气象台,辽宁大连116041 [3]91967部队气象台,河北沙河054100

出　　处：《海洋预报》2012年第6期37-43,共7页Marine Forecasts

基　　金：中国科学院知识创新工程重要方向项目(KZCX2-YW-Q11-03);国家海洋局青年海洋科学基金重点项目(2011202)

摘　　要：利用来自ECMWF具有较高时空分辨率的近45年ERA-40海表风场资料和将风浪、涌浪分离的ERA-40海浪再分析资料,分析了南海海表风场、海浪场与厄尔尼诺的相关性。研究发现:(1)南海的海表风场、海浪场与nino3指数有着密切的关系,其中涌浪、混合浪与nino3指数的相关性好于风浪;7月和10月海浪场与nino3指数的相关性好于1月和4月,其中4月相关性为全年最低。(2)南海海表风场、风浪、涌浪、混合浪场第一模态空间分布均呈现东北-西南走向的高值区分布,风浪场与海表风场具有较好的对应关系,而混合浪场则更多的是包含了涌浪的信息。(3)南海海表风场、风浪、涌浪、混合浪场存在3—3.75年的共同周期。南海的海表风场、风浪场与nino3指数存在的3.3年左右、5年左右的共同周期,涌浪场、混合浪场与nino3指数存在的3—4年左右的共同周期。Based on the ERA-40 wind field data and wave reanalysis data in the past 45 years, the relationship between E1 Nino events and wave in the South China Sea was analyzed. The results show that： （l） there is a close relationship between nino3 index and wave in the South China Sea, whereas the correlation of swell wave and mixed wave is closer than the wind wave with nino3 index. The relationship between nino3 index and wave in Ju- ly and October is better than that in January and April. （2） The first modes of sea surface wind field, wind wave, swell wave and mixed wave have a similar spatial characteristic, which presents a high to low value distribution from northeast to southwest. （3） The periods of sea surface wind field, wind wave, swell wave and mixed wave exist 3-3.75 years in the South China Sea. The common period of the sea surface wind field, wind wave and the nino3 index is 3.3 years and 5years, while the swell wave, mixed wave and nino3 index have the common period of 3--4 years.

关 键 词：ERA-40海浪再分析资料 南海 风浪 涌浪 厄尔尼诺 周期 

分 类 号：P731[天文地球—海洋科学]