Calculates approximate omega in C, given vertical velocity, water vapor mixing ratio, temperature, and pressure from WRF model output.
Available in version 6.2.0 and later.
function wrf_omega ( qv : numeric, t : numeric, v : numeric, p : numeric ) return_val : float or double
Water vapor mixing ratio in [kg/kg]. The rightmost dimensions are bottom_top x south_north x west_east.t
Temperature in [K]. An array with the same dimensionality as qv.v
Vertical velocity in [m/s]. An array with the same dimensionality as qv.p
Pressure in [mb]. An array with the same dimensionality as qv.
Approximate omega [dp/dt]. The rightmost three dimensions will be bottom_top x south_north x west_east, and the leftmost dimensions, if any, will be the same as qv's. The array will contain the same named dimensions as qv; otherwise, the rightmost two dimensions will be named "south_north" and "west_east". The type will be double if any of the input is double, and float otherwise.
This function calculates approximate omega in C, given vertical velocity, water vapor mixing ratio, temperature, and pressure from WRF model output.
You can use wrf_user_getvar with an argument of "omg" to calculate this diagnostic.
The return variable will contain two attributes:
return_val@description = "Omega"
return_val@units = "Pa/s"
Questions on this function should be sent to firstname.lastname@example.org.
See the full list of WRF functions.
Note: for WRF variable names and their definitions, you can easily check them by using "ncl_filedump":
You can see some other example scripts and their resultant images at: