Questions about large grids domain run using ndown.exe WRF4.6

[peiwang6]

Hi Everyone,
I want to use WRF4.6 to run a high resolution model (9km/3km/1km) with grid points 1450x1200, 3502x2860, 4666x3301. I can generate D01 and D02 successfully. But I can't use real.exe to generate D03 since the grid number of D03 is too large. I wonder may I use ndown.exe for the D3 (1 km) initial and boundary condition files? Is there also a grid number limitation for ndown.exe? If based on your experience, ndown.exe could help me run 1 km domain, I'll try this way. Or if there is any other suggestions, that would be great!

Any sort of help is appreciated!

 

[Ming Chen]

Hi Peiwang,
We are aware that WRF has trouble when running with large grid numbers, and ndown has the same issue.
Unfortunately we don't have a solution yet. Therefore it is recommended to reduce grid numbers to avoid this problem.

 

[peiwang6]

Hi Peiwang,
We are aware that WRF has trouble when running with large grid numbers, and ndown has the same issue.
Unfortunately we don't have a solution yet. Therefore it is recommended to reduce grid numbers to avoid this problem.

OK, it seems that reducing the grid numbers is the best way... Thanks Ming!