Summary Ground layer and zero layer were recognized in the past already as two layers that are of directly opposite relevance to the mass exchange in high-reaching high and low pressure areas; taking place in the ground layer is an ageostrophic mass transport in the direction high to low pressure, while in the zero layer the opposite motion is accurring, i.e., from low to high pressure. Yet, the two layers have some communities too. They are located below the most significant inversions of the troposphere (Peplopause and/or Tropopause). Since an inversion will act upon the flow upward of kinetic energy as an intercepting layer, a congestion of kinetic energy will be produced below it, involving an ageostrophic increase in the wind speed, as compared with vertically adjoining layers. There are a number of clues for such an increase of wind speed actually occurring below the peplopause.