Sigma or eta vertical coordinate system

[Din19]

Dear WRF community,

Hi.

I have a question about WRF vertical coordinate system. Does WRF model use sigma or eta vertical coordinate system?

Thank you very much.

 

[Ming Chen]

I am not sure what you mean by "sigma" and "eta".

WRF uses terrain-following hydrostatic-pressure vertical coor-dinate . Details can be found in:

https://www2.mmm.ucar.edu/wrf/users/docs/technote/v4_technote.pdf

 

[Din19]

Dear Ming Chen,

Thank you for your reply.

I apologize for any confusion in my previous message. By "sigma" and "eta", I was referring to types of vertical coordinate systems used in atmospheric models. I wanted to know more about the vertical coordinate system used in WRF.

I appreciate the link to the technical note. I will review it for more detailed information.

Thank you very much for your help.