LAKEMASK problems with ndown.exe

[makeyjp]

Hello

I have some problems.

I am trying 1way nested run with ndown.exe.
After ndown.exe, in the results using the new wrfinput, the grid points where LAKEMASK = 1 (lake) in the wrfinput are no longer flagged as lakes.
In simulations using wrfinput generated by the standard real.exe, the LAKEMASK flags are preserved.
What is the difference between the wrfinput generated by real.exe and that generated by ndown.exe?

Why is the wrfinput generated by ndown.exe used for a 1way nested run instead of the wrfinput generated by real.exe?
Is it incorrect to use the wrfinput generated by real.exe as the initial condition for a 1way nested run?

Could you give me some advice?

Thanks

 

[makeyjp]

I've checked some variables of LAKE.
After ndown.exe, LAKEFLAG and LAKE_DEPTH_FLAG are changed 0 by ndown.exe.
After real.exe, LAKEFLAG and LAKE_DEPTH_FLAG are 1.

Why are the two variables changed?

Could anyone tell me, please?