What e_vert to use if I only care about WRF's surface variable outputs

[dstabile]

Hi all,

If I'm only interested in WRF's surface variable outputs (T2, U10, V10, etc), what e_vert would be appropriate? I looked at the Setting Model Vertical Levels section in the WRF manual but I'm not a weather expert so I'm not sure what dzbot and max_dz values are appropriate. For context, I'm using WRF to downscale global climate model data down to 1km resolution.

Thanks!

 

[Ming Chen]

e_vert is the number of vertical levels when running WRF. It usually should be around 40 for p_top = 30 ~ 50 hPa to ensure appropriate vertical resolution.

dzbot is the thickness of lowest layer (m) if you set auto_levels_opt=2, and max_dz is the maximum level thickness allowed. I would suggest you stay with the default value of 50 and 1000 for the two variables, respectively.

We provide an online tutorial for beginners, which may be helpful for you. Please take a look at the website here.