近45年北太平洋海表风速特征统计分析  

Statistics Analysis of Seasonal Characteristics of Sea Surface Wind Field in the North Pacific Ocean During the Last 45 Years

作　　者：马亚维 丛爱丽[2] 田妍妍 刘天宁[4] 周欣欣[5] 

机构地区：[1]青岛市气象局 [2]91286部队气象台 [3]91379部队气象台 [4]92538部队 [5]曲阜师范大学

出　　处：《科技资讯》2013年第31期105-111,共7页Science & Technology Information

摘　　要：本文利用来自欧洲中期天气预报中心（ECMWF——European Centre for Medium-Range Weather Forecasts）的1957年8月—2002年7月逐6 h的ERA-40海表10 m风场资料,统计分析了近45年期间北太平洋海表风场的月变化特征,以及多年平均海表风速的分布特征,为海洋水文保障、海洋工程等提供参考。结果表明：（1）北太平洋的海表风场具有明显的月变化特征,10月至来年2月的风速整体高于其余月份。（2）从年平均风速来看,阿留申群岛附近海域为北太平洋年平均风速的明显大值中心,年平均风速基本在8 m/s以上;中纬度海域的年平均风速在6~7 m/s;15°N-20°N的东部海域存在一相对大值区,年平均风速在7 m/s以上;赤道西部海域的年平均风速较小,基本在4 m/s以内。By using ERA-40 sea surface wind field from ECMWF（European Centre for Medium-Range Weather Forecasts）,the seasonal characteristics of sea surface wind field in the North Pacific Ocean were analyzed.Results show that,（1）There is obviously seasonal variability in wind speed and wind direction.（2）From annual average wind speed,the Aleutian Islands off the coast of the North Pacific annual average wind speed significantly large value center,the annual average wind speed substantially above 8m/s;mid- latitude waters of the annual average wind speed in the 6-7m/s;15°N-20°N east coast there is a relatively large area,the annual average wind speed is more than 7m/s;equatorial waters west of the annual average wind speed within 4m/s.

关 键 词：ECMWF ERA-40海表10m风场 北太平洋 海表风场 月变化特征 年平均风速 

分 类 号：P731.22[天文地球—海洋科学]