Why doesn't metgrid name have vertical velocity(W) in Vtable.GFS, Vtable.ECMWF?
The reason why only U and V are included except for W is that WPS and WRF basically only consider horizontal direction?
Vtable only provide GRIB parameters for variables required to run WRF. 'w' is not a variable required, and thus it is not included in Vtable.
"W' is a pronostic variable, which is calculated in WRF based on the equation:
When I printed out W(vertical velocity), it came out as attached csv file.
However, at certain parts of all levels, the value appears to be zero as if it were missing.
Can I know why or how to solve it?
If W=0 is a valid value, why does W get 0 at the same position at all levels? (1000mb,950mb... 70mb)
My guess is that the more oceans are included in the nesting area, the more this happens. Can you tell me why? Thank you.