北太平洋海浪场和风场特征分析  

Analysis of characteristics of the wind and wave fields in the North Pacific

作　　者：徐秀枝[1] 诸裕良[1] 冯向波[1] 闫敏[1] 

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《海洋工程》2017年第1期112-120,共9页The Ocean Engineering

基　　金：中央高校基本科研业务费专项资金资助(2016B10414;2016B20814;2015B26414)

摘　　要：利用欧洲中尺度天气预报中心(ECMWF——European Centre for Medium-Range Weather Forecasts)的1979年1月2014年12月逐6 h的ERA-Interim有效波高和10 m风场资料,分析了近36年期间北太平洋海域海浪场和风场的变化特征。结果表明:1)中低纬度的西北太平洋波高有逐年线性递增趋势,大约在0.2~0.6 cm/a,而低纬度的太平洋东北部海域则以-0.4^-0.2 cm/a的趋势减小。2)风速线性变化趋势显著的区域主要集中在太平洋东北部低纬度海域,约以1.0~2.0 cm/(s·a)的速度在增加。而日本岛四周、菲律宾半岛以南等海域大都以-1.0^-0.5 cm/(s·a)的速度减小。3)北太平洋海域波高和风速都具有明显的季节变化特征,两者具有很强的相关性。西风带内有一个个波高超过10 m的风暴圈,其波高受风浪和涌浪的双重作用。这可为航海、海洋工程设计、军事及海洋能开发与利用等方面提供科学依据。By using newly ERA-Interim sea surface wind field and wave field from1979 to 2014 developed by the European Centre for Medium-Range Weather Forecasts（ECMWF）,the characteristics of wave climate in the North Pacific Ocean were analyzed.Results show that,1） the significant wave height shows an obvious annually linear increasing trend,about 0.2~0.6cm in the low latitudes of the northwest Pacific,with decreasing tendency（about-0.4^-0.2cm/a） in the low latitudes of the northeast Pacific.2） Sea surface wind speed in the low latitudes of the northeast Pacific has an obvious increasing tendency,about1.0 ~ 2.0cm/（s·a）.The area with decreasing tendency（about-1.0 ^-0.5 cm /（s·a）） is mainly located in the Japanese islands and the south of the Philippines peninsula.3） The wind field and wave field are significantly affected by the monsoon in the North Pacific,which have a strong correlation.It occurs several store circles with wave heights over 10 m in the westerlies,where it is affected by wind wave and swell.These can provide certain guidance for construction.

关 键 词：ERA-INTERIM 北太平洋 海表风速 波高 线性趋势 时空分布 

分 类 号：P722[天文地球—海洋科学]