The Akio Arakawa Symposium


A Non-hydrostatic Hybrid Vertical Coordinate Dynamical Core

Mike Toy, Colorado State Univ., Fort Collins, CO

A new dynamical core is developed based on the elastic, non-hydrostatic equations of motion using a hybrid vertical coordinate. A height-based, terrain-following coordinate is used near the surface which smoothly transitions to a quasi-Lagrangian (isentropic) coordinate in the free atmosphere. Integral constraints such as total energy and angular momentum conservation are preserved by the vertical differencing scheme. The dynamics are tested in a model which is a prototype for a future global cloud resolving model. Test results on various spatial scales are presented.

Poster Session 1, Poster Session
Tuesday, 16 January 2007, 9:45 AM-11:00 AM, Exhibit Hall C

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