Field names in intermediate files

[afernandezody]

I had not noticed before but the UG (Chapter 3: WRF Standard Initialization) lists UU & VV twice (for regular wind speeds and for U10/V10). Is this a typo and the 2D fields should be named differently (e.g. U10, V10)? Does metgrid actually need U10 and V10 (maybe it's applying similarity theory)? Thanks.

 

[Ming Chen]

No, it is not typo. In METGRID, 2D fields of U10 and V10 are named UU and VV. METGRID does need U10 and V10, although their names are UU and VV.

 

[afernandezody]

I guess that METGRID figures out which are the 3D and which are the 2D fields, but it's still odd to use the same names for different variables. Is this going to be modified in upcoming versions?
P.S. I forgot that the same could be said for TT with T(3d) and T2(2d)

 

[Ming Chen]

No, we have no plan to change the names of U10 and V10.

 

[Ming Chen]

The naming convention in WPS intends to keep the same name for a specific physical element, no matter whether it is at surface level or upper levels.

 

[afernandezody]

More than counterintuitive, I'd say that it goes against coding 'best practices' but I'm not a computer scientist so it is what it is. I handled the issue by simply using internal variables (e.g. T2) and just changing to 'TT' at the time of writing the data to the intermediate file.