春季赤道东太平洋海温异常对西太平洋副高的影响  

Influence of Spring Equatorial Eastern Pacific SSTA on Western Pacific Subtropical High

作　　者：彭加毅[1] 孙照渤[1] 

机构地区：[1]南京气象学院大气科学系,江苏南京210044

出　　处：《南京气象学院学报》2000年第2期191-195,共5页Journal of Nanjing Institute of Meteorology

基　　金：国家自然科学基金重点项目!( 4963 51 80 )资助

摘　　要：首先给出西太平洋副高脊线、面积和西伸指数的定义 ,在此基础上讨论赤道东太平洋海温异常与西太平洋副高的年际变化关系 ,并进一步分析了春季赤道东太平洋海温异常对西太平洋副高季节变化的影响。结果表明 ,春季赤道东太平洋海温异常与夏季副高位置和强度的年际变化及季节变化都有密切关系。从春季到夏季 ,春季海温偏暖年副高偏南、偏强、偏西 ;偏冷年副高偏北、偏弱、偏东 ,冷年 6月副高北跳较暖年显著 。Defined are three indices about western Pacific subtropical high (WPSH),i.e.,the WPSH ridge index,area index and western extension index.On the basis of the indices,the interannual relations between equatorial eastern Pacific SSTA and WPSH are studied,and further discussion reveals the influence of equatorial eastern Pacific spring SSTA on the seasonal change of WPSH.Results show that the equatorial eastern Pacific spring SSTA is closely connected with the strength and position of summer WPSH on interannual and seasonal scales.Related to the warm (cold) spring SSTA in the equatorial eastern Pacific,the WPSH from spring to summer lies to the south (north) of its mean,the west (east) of its normal,and is slightly intensified (weakened) with insignificant (noticeable) northward shift in June and slow (fast) southward retreat in Autumn.

关 键 词：赤道东太平洋海温异常 西太平洋副热带高压 

分 类 号：P732.6[天文地球—海洋科学]