REGTHERM 2001, Convection Model with Local Winds

Authors

  • Olivier Liechti Au & K, Winterthur, Switzerland

Keywords:

Meteorology, Atmospheric physics

Abstract

Differential heating creates horizontal pressure gradients which drive secondary circulations in the form of sea breezes and valley winds. Introducing a horizontal coupling between neighboring regions into the numerical convection model ALPTHERM allows one to model the effects of these secondary circulations on the primary convective circulations in the coupled regions. The weakened thermals in regions affected by sea breeze and in basins surrounded by elevated terrain appear in REGTHERM. Additionally, the effects of valley winds on thermals in mountains can be observed.

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