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利用热带海洋和全球大气试验(TOGA)期间(1980～1996年)热带大气海洋观测阵(TAO)的长期浮标资料,分析了赤道行星波对西赤道太平洋暖池热传播的作用。结果表明,西赤道太平洋暖池纬向热传播主要出现在次表层水体中,并沿温跃层向东传播;而向西传播的季节热结构变化主要出现在中、西赤道太平洋的混合层中;驻波型传播在西赤道太平洋主要出现于温跃层,在中赤道太平洋主要出现于混合层和温跃层,在东赤道太平洋主要出现于混合层。在平均条件下,赤道太平洋上层水温纬向热传播信号以驻波型和东传型较强,西传型较弱。赤道Kelvin波压力分量贯穿西、东赤道太平洋并向东输送暖池热能,纬向流分量的热输送主要出现在西赤道太平洋;Rossby波压力分量的热输送主要出现在东、中赤道太平洋;混合Rossby重力波激发纬向流的热输送作用比相应温跃层扰动强。在平均条件下,赤道太平洋上层水温的驻波型变化制约了西赤道太平洋暖池热量的持续向东输送,因此形成了赤道太平洋水温的正常季节变化形态。当水温的驻波型变化减弱而东传型变化加强时,随后将形成厄尔尼诺现象。
Using the long-term buoy data from the Tropical Atmosphere Ocean Observatory (TAO) during the Tropical Ocean and Global Atmospheric Test (TOGA) period, the effect of equatorial planetary waves on the thermal propagation in the Western Equatorial Pacific Warm Pool was analyzed. The results show that the latitudinal heat propagation in the western equatorial Pacific warm pool mainly occurs in the subsurface water body and propagates eastward along the thermocline layer. The seasonal thermal structure propagating westwards mainly occurs in the mixed layer of the western and central equatorial Pacific The standing wave propagation mainly occurs in the thermocline in the western equatorial Pacific, mainly in the mixed layer and thermocline in the equatorial Pacific Ocean, and mainly in the mixed layer in the eastern equatorial Pacific. Under average conditions, the latitudinal heat propagation signals of the upper equatorial Pacific have stronger standing and east-easing modes and weaker west-transmitting modes. The pressure component of the equatorial Kelvin waves runs through the western and eastern equatorial Pacific and conveys the thermal energy of the pool warmly to the east, and the heat transport in the zonal flow component mainly occurs in the western equatorial Pacific Ocean. The heat transport of Rossby wave pressure components mainly occurs in the eastern and central equatorial Pacific. Rossby gravitational wave excitation zonal flow heat transport than the corresponding thermocline strong disturbance. Under the average condition, the standing wave variation of upper equatorial Pacific water temperature restricts the continuous eastward transfer of heat in the western equatorial Pacific warm pool, thus forming the normal seasonal variation of equatorial Pacific water temperature. When the standing wave of the water temperature is weakened and the variation of the East Chiron type is strengthened, El Niño will be formed subsequently.