0% nudging in CAM5?

[adrianabossolasco]

Hi everyone


I have a doubt about the nudging in CAM5, actually I am using FSTARTMAM7 compset but I modified the compset to put specif dynamics. Something like this :

"Component set: longname (shortname) (alias)

GEOS_CAM5%SMA7_CLM40%CN_CICE%PRES_DOCN%DOM_RTM_SGLC_SWAV (F_GEOS_STRATMAM7_CN) (FSTRATGEOSMAM7)

Component set Description:

CAM: CLM: RTM: CICE: DOCN: SGLC: SWAV: GEOS5 meteorology: cam5 physics: CAM trop_strat_mam7 chemistry: CAM winds and temperature driven by GEOS5 meteorology: clm4.0 physics: clm4.0 cn: prescribed cice: docn data mode:"


Now I am wondering if for this configuration the default nudging is also 10%? from where I can check this?

I was looking in my atm_in file but I didn't found a variable name "met_max_rlx"


And second question if I want to test different nudging %..... will work if I put met_max_rlx=0 in the way that will be "free running"? I mean without nudging?

I really appreciate any advice/help


Thanks in advance

Adriana

 

[mmills]

Which code base are you using, Adriana?

 

[tilmes]

Hi Adriana,
we are not really supporting the MAM7 version, so just a heads up here.
If you don't really need that I would suggest using a scientifically validated compset like STRATMAM3 for the free running case or FSDSMAM for the nudged version. Also, I would recommend moving to CESM2 model versions because of new developments and improved performance.
cheers, Simone