NAM_PARAMn
It contains the different types of parameterizations used by the model n. They are included in the declarative module MODD_PARAMn.
Fortran name |
Fortran type |
Default value |
|---|---|---|
CTURB |
CHARACTER(LEN=4) |
‘NONE’ |
CRAD |
CHARACTER(LEN=4) |
‘NONE’ |
CCLOUD |
CHARACTER(LEN=4) |
‘NONE’ |
CDCONV |
CHARACTER(LEN=4) |
‘NONE’ |
CSCONV |
CHARACTER(LEN=4) |
‘NONE’ |
CELEC |
CHARACTER(LEN=4) |
‘NONE’ |
CACTCCN |
CHARACTER(LEN=4) |
‘NONE’ |
CTURB: type of turbulence scheme used to parameterize the transfers from unresolved scales to resolved scales.‘NONE’ : no turbulence scheme.
‘TKEL’ : turbulence scheme with a one and a half order closure (i.e. prognostic turbulent kinetic energy (TKE) and diagnostic mixing length). Specific options have to be set in NAM_TURBn.
CRAD: type of radiative transfer scheme used to parameterize the effects of the solar and infrared radiations.‘NONE’ : then the downward surface fluxes are set to zero
‘TOPA’ : the solar flux is equal to the one at TOP of Atmosphere. The infra-red flux is equal to 300 \({\rm W.m}^{-2}\).
‘FIXE’ : then the daily evolutions of the downward surface fluxes are prescribed. The temporal evolution is done in the routine PHYS_PARAMn by fixing the hourly value of the infrared and solar fluxes and can be modified for personal application.
‘ECMW’ : the ECMWF radiation scheme code is used. Specific options have to be set in NAM_PARAM_RADn.
‘ECRA’ : the ECRAD radiation scheme code is used. Specific options have to be set in NAM_PARAM_RADn and NAM_PARAM_ECRADn.
CCLOUD: type of the microphysical scheme used to parameterize the different water phases’ transformations.‘NONE’ no microphysical scheme is used. You can still use water vapor if you want (LUSERV= TRUE or FALSE)
‘REVE’ only the saturation adjustment is used to create cloud water. This liquid water is never transformed in rain water.
‘KESS’ a warm Kessler microphysical scheme is used. It allows transformations between the 3 classes of water: vapor, cloud water and rain.
‘C2R2’ a 2-moment warm microphysical scheme according to Cohard and Pinty (2000). Specific options have to be set in NAM_PARAM_C2R2.
‘KHKO’ a 2-moment warm microphysical scheme for LES of Stratocumulus according to Khairoudinov and Kogan (2000). Specific options have to be set in NAM_PARAM_C2R2.
‘ICE3’ a mixed microphysical scheme including ice, snow, and graupel (6 classes of hydrometeors).
‘LIMA’ a mixed 2-moment microphysical scheme (6 classes of hydrometeors ). Specific options have to be set in NAM_PARAM_LIMA.
‘ICE4’ same as ICE3 but with hail (7 classes of hydrometeors).
CDCONV: type of deep convection scheme used to parameterize the effects of unresolved convective clouds.‘NONE’ : no convection scheme.
‘KAFR’ : Kain-Fritsch-Bechtold scheme. Specific options have to be set in NAM_PARAM_KAFRn.
CSCONV: type of shallow convection scheme used to parameterize the effects of unresolved shallow convective clouds.‘NONE’ : no convection scheme.
‘KAFR’ : Kain-Fritsch-Bechtold scheme. Specific options have to be set in NAM_PARAM_KAFRn.
‘EDKF’ : Eddy-Diffusivity-Kain-Fritsch scheme (according to Pergaud et al., 2008). Can only be used with CTURB=’TKEL’. Specific options have to be set in NAM_PARAM_MFSHALLn.
CELEC: type of electricity-lightning scheme used to parameterize electrification of hydrometeors‘NONE’ : no electricity-lightning scheme.
‘ELE3’ : original scheme CELLS based on duplication of microphysics ICE3 code. Works only with NAM_PARAM_ICEn LRED=F, LSNOW_T=F. Specific options have to be set in NAM_ELEC.
‘ELE4’ : externalization and modernization of ELE3 with possibility to use with LIMA and ICE3 with time-splitting. Specific options have to be set in NAM_ELEC.
Note
With LIMA, two configurations are possible in NAM_PARAM_LIMA:
LPTSPLIT=T, NMOM_C=NMOM_R=NMOM_I=2, NMOM_S=NMOM_G=1, NMOM_H=0, and LSNOW_T=F
LPTSPLIT=T, NMOM_C=NMOM_R=NMOM_I=NMOM_S=NMOM_G=2, NMOM_H=0, and LSNOW_T=F.
With ICE3, set LRED=T and LSNOW_T=F in NAM_PARAM_ICEn.
CACTCCN: type of CCN activation scheme‘NONE’ : no CCN activation scheme.