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Original Articles

Frontogenesis near steep orography

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Pages 259-269 | Received 08 Jul 1988, Accepted 20 Feb 1989, Published online: 15 Dec 2016
 

Abstract

Fronts moving along steep mountain ridges may show the characteristics of a ducted gravity current. Moreover, an intensification of the cross-frontal temperature gradient and a sudden increase of the speed of propagation has been observed during the formation of such a ducted front. We propose a mechanism for this type of frontogenesis and demonstrate its effectivity by running numerical experiments with a multi-layer model.