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This post was from a previous version of the WRF&MPAS-A Support Forum. New replies have been disabled and if you have follow up questions related to this post, then please start a new thread from the forum home page.
The ncl script from https://www.ncl.ucar.edu/Document/Functions/Contributed/brunt_vaisala.shtml is applicable for estimation of dry Brunt-Vaisala frequency.
How to calculate the moist Brunt-Vaisala frequency?
You need to calculate equivalent potential temperature. It appears NCL does this and can be acquired via calling for "eth" in the get_var function. This requires knowing the temperature of the lifted condensation level for which there are several empirical methods to do so. A better approach would be to make a correction for the moist adiabatic lapse rate so that
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