热带西太平洋表面风场的变化及其对海洋上部热结构的影响

摘要: 据1962～1980年逐月平均表面似风应力资料,用调和分析及功率谱分析等方法分析了热带西太平洋表面风场的季节变化和年际变化.结果表明,该海区表面风场的季节变化,主要与热带辐合带(ITCZ)的季节位移有关,其年际变化则有明显的与埃尔尼漆南方涛动现象(ENSO)相对应的变化.且表面风场通常比ENSO有超前的异常变化.文中还初步探讨了表面风场变化对海洋次表层热结构的影响.结果表明,表面风应力涡度引起的埃克曼抽吸作用(Ekman pumping)可近似解释该海区温跃层深度的平均季节变化.该海域赤道附近表面纬向风应力的变化与西太平洋暖水区体积变化之间有较密切的关系.
- 表面风场 /
- 海洋上部热力结构

高士英,王静曙.西太平洋近赤道地区风场变化与埃尔尼诺.海洋学报,1987,9(5):558-567

T P.Interaction of the Monsoon and Pacific trade wind systerm at interannuale time scale,Part I.The equatorial band.Mon.Wea.Rev.,1983,111,756-773

Wyrtki K.Equatorial current in the Pacific 1950-1970 and their relations to the trade wind.J.Phys.Oceanogr.,1974,4.372-380

Meyers U.Interannual variation in sea level near Truk Island;A bimodal seasonal cycle.J.Phys.Oceanogr.,1982,12,1161-1168

Donguy J R et.al.Thermal changes in the western Tropical Pacific in relation to the wind field.Deep-Sea Res.,1982,29,869-882

White E B et al.Short-term climate variability in the thermal structure of the Pacific Ocean during 1979-1982.J.Phys.Oceanogr.,1985,15,917-935

Meyers G.Seasonal variation in transports of the Pacific North Equatorial Current relation to the wind field.J.Phys.Oceanogr.,1975,5.442-449

Wyrtki K.The southern oscillation,Ocean-atmosphere interaction and El Nino.MTS.Journal,1981,16,3-10

Katz E J et al.Zonal pressure gradient along the equatorial Atlantic.J.Mar.Res.,1977,35.293-307

Donguy J R et al.Wind and thermal conditions along the Equatorial Pacific.J.Mar.Res.,1984,42,103-121

林传兰.1964-1982年热带西北太平洋海洋上层热含量的变化特征.热带海洋,1990,,(2):78-85

Parker D E.Documentation of southern oscillation index.Meteoro.Mag.,1983,112,189-188

留言板