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本文给出了含有大气层结效应的、并用观测资料可直接去诊断纬向平均流加速的广义E-P通量关系。它的优点在于,即使在大气斜压性较强,瞬变扰动的热量输送随时间和空间有明显变化的情况下,波对纬向平均流的加速作用也能较好地被诊断出来。同时广义E-P通量中,自动解除了过去E-P通量中存在的病态条件及扰动位移η’的不确定性,它能较准确地用观测资料去判别。文中用实例说明了广义E-P通量能诊断出一般E-P通量所不能正确诊断出来的结果。
In this paper, generalized E-P flux relationships with atmospheric stratification effects and the observation data can be directly used to diagnose the zonal mean velocity acceleration. Its advantage is that the acceleration effect of wave on zonal mean flow can be well diagnosed even under strong baroclinic atmospheric pressure and transient heat transfer with time and space. At the same time, the generalized E-P flux automatically loses the ill-conditioned conditions of the past E-P flux and the uncertainty of the disturbance displacement η ’, which can be more accurately judged by observation data. In this paper, an example is given to show that generalized E-P flux can diagnose the result that normal E-P flux can not be correctly diagnosed.