Atmospheric convective plumes emanating from leads 1. Thermodynamic structure

A one-dimensional model with detailed radiative transfer, a second-order closure scheme for turbulence, and bulk cloud microphysics has been employed to simulate the convective atmosphere above a wide open lead. The development of a thermal internal boundary layer (TIBL) associated with the atmospheric convection above a wide open lead is modeled for several different temperature profiles characteristic of the Arctic winter. Large differences in the predicted top of the TIBL are observed between two simple diagnostic models and the time-dependent model introduced here. -Authors