Hello all!
How do I set the time step to 0.2 seconds when doing data assimilation by 4DVar?
I am forecasting a 2 domain model and want to do data assimilation with 4DVar for domain 2.
When I was forecasting a 2-domain model without data assimilation, I was able to forecast domain 2 with a 0.2 second time step by specifying a time step in namelist.input.
Specifying namelist.input for data assimilation by 4DVar resulted in the error For 4DVAR, in the &domains namelist, "time_step" must be set to a non-zero value.
How do I set a time step of 0.2 seconds?
Best regards.
How do I set the time step to 0.2 seconds when doing data assimilation by 4DVar?
I am forecasting a 2 domain model and want to do data assimilation with 4DVar for domain 2.
When I was forecasting a 2-domain model without data assimilation, I was able to forecast domain 2 with a 0.2 second time step by specifying a time step in namelist.input.
&domains
time_step = 2,
time_step_fract_num = 0,
time_step_fract_den = 1,
parent_time_step_ratio = 1, 10,
/
Specifying namelist.input for data assimilation by 4DVar resulted in the error For 4DVAR, in the &domains namelist, "time_step" must be set to a non-zero value.
&domains
time_step = 0,
time_step_fract_num = 2,
time_step_fract_den = 10,
/
How do I set a time step of 0.2 seconds?
Best regards.