“环太平洋”联合军事演习区海面风的统计分析  

Statistical analysis on sea surface wind of“Rim Pacific”joint military exercises

作　　者：马应生[1] 刘立勇[1] 张桁正[1] 李家林[1] 

机构地区：[1]解放军海军南海舰队海洋水文气象中心,广东湛江524001

出　　处：《解放军理工大学学报（自然科学版）》2015年第6期600-606,共7页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(41505058);江苏省自然科学基金资助项目(BK20150710)

摘　　要：为了满足舰艇编队对"环太平洋"联合军事演习相关海区的气象保障需求,利用NCEP/NCAR再分析资料,对航线和海区的海平面气压场和水平风的特点进行了剖析与诊断,并对夏威夷南、北部海区引发大风的天气形势进行合成分析。结果表明,北太平洋副热带高压和赤道之间常年存在一个风速较大的风带(5级或以上),它的位置随季节南北移动,冬季强而位置偏南,夏季弱而位置偏北;演习海区常年受夏威夷高压影响,该高压在冬半年至夏半年的转换中逐渐增强,同时高压中心西伸北进;夏威夷南部海区发生大风的频率最高,北部次之,北部海区一般只在强高压主体向南推进时出现大风,而南部海区在一般强度的高压脊作用下,或者在弱高压脊与赤道附近的低值系统配合的情况下,也会出现大风。To satisfy the climatological need of our naval ships successfully participating in the ＂ Rim Pacific＂ Joint military exercises（RPJME）,the characteristics of the RPJME sea surface wind（SSW）and pressure were preliminary analyzed and diagnosed using the NCEP/NCAR reanalysis data and other data,and the weather situation composite analysis was conducted.It is found that there is a gale（more or equal to grade5）belt between the North Pacific subtropical High and the equator almost all the year round.Its position moves northward with weak activity in summer,and southward with strong activity in winter.The RPJME region is impacted by the Hawaiihigh pressure throughout the year,and the high pressure is used to enhancing from winter to summer with seasonal transition.At the same time,the center of high pressure extends northwestward.The daily frequency of gale is the highest south of Hawaii,and becomes weaker in the north region.The closer to the islands,the smaller the surface waves are,which illustrates the obvious island effect.When there is a strong high pressure in north of Hawaii and moves southward,there will be a gale in both south and north of the RPJME area;Besides,there will also be a gale under the control of both weak high pressure and a low-value system in south of the RPJME.

关 键 词：“环太平洋”联合军事演习 夏威夷高压 大风带 海面风 

分 类 号：P425.5[天文地球—大气科学及气象学]