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Nonhydrostatic Mesoscale Model
Refined version of nonhydrostatic released with workstation Eta. NMM retains full hydrostatic capability & step mountain options:
Incorporate nonhydrostatic effects through where =(1/g) dw/dt
Then split prognostic equations into:
(a) hydrostatic parts plus corrections due to the vertical acceleration
(b) the system of equations that compute the corrections due to vertical acceleration in (a)
Set to zero to run in hydrostatic mode.