A modified version of an operational 3dimensional, non-hydrostatic, limited-area atmospheric model (MM5) was used to perform high-resolution, idealized simulations of the interaction of an infinitely long single ridge with a steady, lateral large-scale wind field. The effect of different mountain ridge dimensions, wind speeds and patterns and moisture profiles on the quantity and distribution o...

While the main focus of the MAP subproject FORM (Foehn in the Rhine Valley during MAP) was on atmospheric dynamics, numerous measurements of chemical constituents of the atmosphere have been performed with various instruments on different platforms. Aerosol measurements have been obtained with routinely operated conventional surface stations, in-situ airborne particle counters and a backscatter...

Abstract. It has long been recognized that a rich variety of Alpine south-foehn flavours exist are related to varying flow conditions above crest level, the presence and intensity orographic precipitation on south side, Po Valley stratification. This study presents systematic 5-year climatology different foehn types. The classification relies 2329 hours, which diagnosed using station-based inde...

A foehn event on 27 January 2011 over the Larsen C Ice Shelf (LCIS), Antarctic Peninsula and its interaction with an exisiting ground-based cold-air pool is simulated using MetUM atmospheric model at kilometre sub-kilometre scale grid spacing. Atmospheric simulations scales are important tool for understanding detailed circulation temperature structure LCIS, especially occurrence of foehn-induc...