How to run WRF with one initial time data？

[xpji]

Hi, all
1、I wrote a basic initial field environment file based on the solution of the equatorial wave equation. I positioned its initial time at 2021-01-01_00 and converted it into a file in met*nc format.
2、I want to Run it for 90 days to see if it can produce some weather-scale fluctuations through time integration. I regard this as a semi-ideal experiment.
3、However, when I ran the real case before, the running time matched the number of met files
my question is: now I only have one file at the initial moment. How can set it up in WRF so that it can run for 90 days? Whether just need to set the number of days and start and end time of run in namelist.input?

 

[kwerner]

Hi,
Unfortunately if you are running any sort of real-data simulation, you will need the input/boundary conditions for the full time. An alternative could be to try this using one of the idealized test cases, and instead of using a met_em* file, you could modify the sounding file that initializes the case to try to obtain the results you want.

 

[xpji]

Hi,
Unfortunately if you are running any sort of real-data simulation, you will need the input/boundary conditions for the full time. An alternative could be to try this using one of the idealized test cases, and instead of using a met_em* file, you could modify the sounding file that initializes the case to try to obtain the results you want.

Hi,

Thank you for your response. I learned from a paper that can set up periodic boundaries, and I wonder if this avoids the need to run the WPS part, and runs the WRF part directly.

Gall, J. S., W. M. Frank, and M. C. Wheeler, 2010: The Role of Equatorial Rossby Waves in Tropical Cyclogenesis. Part I: Idealized Numerical Simulations in an Initially Quiescent Background Environment. Mon. Wea. Rev., 138, 1368–1382, https://doi.org/10.1175/2009MWR3114.1.

 

[kwerner]

You can use periodic boundary conditions if you are running an idealized test case (i.e., not a real-data test case).

 

[xpji]

You can use periodic boundary conditions if you are running an idealized test case (i.e., not a real-data test case).

Thank u, i got it !!