Abstract : G.4
Coriolis effects on mountain wakes

Helen Wells, Stuart Webster, Simon Vosper, Andrew Brown
helen.wells@metoffice.gov.uk
Met Office

Wakes behind isolated topography are frequently seen in satellite images. A variety of wake structures are observed, from long straight wakes (known as weak wakes) to atmospheric vortex streets.

Most previous numerical studies of mountain wakes have concentrated on the lower latitudes and thus have neglected Coriolis effects. Here we present results from a series of numerical simulations of idealised flow past idealised mountains

in the presence of Coriolis effects. We will illustrate the different wake regimes and describe the physical parameters that can be used to predict which type of wake will develop.