Ozone and T2 simulation is inaccurate

[mohouwa]

I am using WRF-CHEM 4.2.1 to simulate the concentration of ozone from 2016.9.16 to 2016.9.28 , the result shows a serious deviatin, and the T2 variable is even negative, I don't know where the problems is .... could someone help me ? My namelist.input has attched below.

 

[jordanschnell]

Hi,

Can you provide your rsl.out.0000 and rsl.error.0000? It would also help to increase the debug_level (~300) to provide more information. Negative T2 may indicate a problem with your initial conditions and/or the surface model. Does your wrfinput file look reasonable?

Jordan

 

[mohouwa]

Sorry, I have just saw your comment now , my problem has been solved. The reason for the error is that the physical parameter of the namelist is incorrectly set，I have changed the ra_sw_physics to 5 and bl_pbl_physics to 1，and the result are much more accurate.

 

[jordanschnell]

Hi @mohouwa

Good to hear your problem has been solved. Were these your only changes? I was comparing your changes to your original namelist and noticed that you had not specified a boundary layer physics options (i.e., bl_pbl_physics = 0). Have you also changed this?

Jordan

 

[mohouwa]

Hi @mohouwa

Good to hear your problem has been solved. Were these your only changes? I was comparing your changes to your original namelist and noticed that you had not specified a boundary layer physics options (i.e., bl_pbl_physics = 0). Have you also changed this?

Jordan

Yes , I have changed bl_pbl_physics=1 in my namelist Here is my updated namelist.input