There are some streaks in the T2 graph.

[Miao_Yang]

Hello everyone.

I am trying to run WRFv4.6.0 with BEM and 0.25° FNL meteorological data. The temperature at 2m height is always strange. There are some streaks in the graph. I've tried many options but still no solution. I'm so confused now.

Please kindly help me to solve the problem. I attached my namelist.wps and namelist.input for your reference. Thank you very much.

 

[Ming Chen]

I have a few concerns on your namelist options:
(1) Please specify grid intervals for all domains, i.e.,
dx=27000, 9000, 3000, 1000
dy=27000, 9000, 3000, 1000
(2) please turn off GWD over the 3km and 1km domains
(3) keep physics the same for all domains except cumulus scheme
(4) can you turn off grid nudging?
(5) time_step = 27 is too small. It can be larger for dx=27km, e.g., time_step =150 could be a better option.