I am encountering some puzzles and expecting your help. Any suggestion is welcome.

 

1,

I am running the RegCM-4dust. It will halt for some clew such as

++++++++++++

I modified the time step again and again, for example

ds=50,dt=150,450

ds=50,dt=100,300

ds=50,dt=90,270

It seems that the less time step, the more running time.

Unfortunately, It will halt still.

I want to know ds=50,dt=50,150 can be the running configuration?

2,

When the model halted like above reason, I restarted it and the running had been complete.

I want to know why the restart can complete running? The same equation or the same calculating methods...

 

Thank you for paying attention to my questions.

Best regards,

Libin Yan