Effects of wind on deep convection in Lake Baikal during the autumnal thermal bar

Abstract

The results of numerical modeling of processes of deep convection in Lake Baikal during the autumnal thermal bar are presented. Analysis of the space—time distributions of temperature under different wind conditions was conducted on an example of the Boldakov River—Maloye More Strait cross-section which is characterised by the great depths. Simulations have shown the effectiveness of wind only in the upper 250 m layers. However, cabbeling instability generated by the thermal bar can lead to convective mixing to a depth of ∼600 m.