Question about the full grid patched from wrfinput and wrfbdy file

[labyrn]

Hi,

Recently I wanted to look into the process of patching the wrfbdy_d01 file and wrfinput_d01 file during the integrating process. I tried to look at the v-wind field by outputting the lowest level value at the rk_step_prep subroutine. It looked like this way:

j index
...	...	...	...	...	...	...	...	...
2	0	0	1.895	1.895	1.895	1.895	1.894	...
1	0	0	1.918	1.918	1.918	1.918	1.901	...
0	0	0	0	0	0	1.918	1.901	...
-1	0	0	0	0	0	1.918	1.901	...
-2	0	0	0	0	0	1.918	1.901	...
-3	0	0	0	0	0	0	0	...
-4	0	0	0	0	0	0	0	...
	-4	-3	-2	-1	0	1	2	i index

It seemed that in the halo region (i/j index -4 to 0) the wrfbdy file information was not read in correctly? Why are there so many 0 values while to my understand these should be some values read in from the wrfbdy_d01 file?
Could someone please help? Thx

 

[Ming Chen]

wrfbdy only covers the outermost 5 layers of the model domain. There is no need to specify halo for wrfbdy since there is no communication conducted along the lateral boundary zone.