Instability of the stable boundary layer?

Many observations of artic boundary layers and nighttime boundary layers in general show low temperatures and weak winds near the surface. These weak wind conditions coincide with extremely low intensities of turbulence. As a result, the upper part of the boundary seems to be de-coupled from the surface. Despite the omnipresence and importance of this decoupling phenomenon its physical background is not yet understood. This coupling therefore stands out as one of the key-problems in the modeling of the climate in cold regions on earth. The current study aims to explain and predict this decoupling phenomenon by applying the physical theory of linear stability analysis (LSA).