Compatibility for mynn

A

afernandezody

Member
Hello,
The combination
bl_mynn_closure = 3.0
sf_sfclay_physics = 5
Click to expand...
is generating the error
-------------- FATAL CALLED ---------------
module_physics_init: use myjsfc scheme for this pbl option
-------------------------------------------
Click to expand...
I don't understand: Is sf_sfclay_physics = 5 (MYNN) compatible with mynn=2.5 but not with mynn=3.0 or am I missing something else?
Thanks.
 
@afernandezody
In your namelist, you're using the CONUS physics suite, which uses the MYJ PBL option (bl_pbl_physics = 2), and to use that option, you need to have sf_sfclay_physics = 5. If you want to use MYNN, you need to set bl_pbl_physics to the MYNN option.
 
@ afernandezody

I am sorry to answer late but this is because I have been out of office since late May. Please follow Kelly's suggestion to modify your namelist.input, then try again. Let us know if you still have issues. Thanks.
 
Hello Kelly and Ming,
Maybe I should have erased the line physics_suite = 'CONUS' to avoid confusion. However, my understanding is that specifying the different physics options supersedes the generic values from the suite. What I'm trying to do is to combine MYNN version 3 with a MYNN Surface Layer Scheme. Did I misunderstand and in order to switch to MYNN version 3, one has to substitute bl_pbl_physics with bl_mynn_closure = 3.0? If so, I still cannot use the combination posted in the original post.
Thanks.
 
@afernandezody
Although bl_mynn_closure is added to the namelist, you must still specify bl_pbl_physics. If you're wanting to use MYNN version 3, you'll set bl_pbl_physics = 5, in addition to bl_mynn_closure. You can read more about it here - see specifically the "RELEASE NOTE"

You are correct that specifying the individual physics options supersedes the physics_suite options, but since you didn't specify bl_pbl_physics, it continues to use the CONUS option (which is bl_pbl_physics = 2).
 
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