Huge precipitation along the nested boundary

[Chetan]

Hi all,

While simulating over the Amazon rainforest, using three nested domains initializing with ERA5 reanalysis data, the inner domains show huge accumulated precipitation along the north-east boundary region (as shown in attached images). What could be the reasons behind this? Any help will be greatly appreciated.

Thank you.

 

[kwerner]

Hi,
Apologies for the delay in response. I notice you have feedback turned off in your namelist. Can you try this with it turned on (feedback = 1) and let me know if it makes any difference?

 

[Chetan]

@kwerner Thank you very much for your response. I will try it and let you know.

 

[Chetan]

Hi @kwerner,
I tried two-way nesting and attached the images below, but unfortunately, the issue wasn't solved. Are there any additional suggestions for me?
I am thinking about increasing the domain size, but it will increase my computational costs.

Thank you.