Mountain-induced convection under fair weather conditions.

Abstract

Measurements of the structure of dry convection over an isolated mountain range heated by the sun are presented. Filter techniques are used to deduce those scales of motion of significance to the circulation. A 2-scale process is observed in which a toroidal, heat island circulation approx 20km in diameter is driven by 3-4km convective eddies. Large negative heat fluxes are found in the upper part of the convective core over the mountains. -Authors