This page contains the complete list of CLM namelist variables available. They are grouped
by categories designed to aid browsing. Clicking on the name of a variable will display descriptive
information. If search terms are entered in the text box below, the list will be condensed to contain
only matched variables.
Namelist Variable |
Type |
Group |
fatmgrid
Full pathname of grid data file on the atm grid.
|
char*256 |
clm_inparm |
fatmlndfrc
Full pathname of land fraction data file.
|
char*256 |
clm_inparm |
fglcmask
Full pathname of land-ice mask data file (on lnd grid).
|
char*256 |
clm_inparm |
finidat
Full pathname of initial conditions file. If blank CLM will startup from
arbitrary initial conditions.
|
char*256 |
clm_inparm |
flndtopo
Full pathname of topography data file. Only required when
land-ice model is active.
|
char*256 |
clm_inparm |
fpftcon
Full pathname datafile with plant function type (PFT) constants
|
char*256 |
clm_inparm |
fpftdyn
Full pathname of time varying PFT data file. This causes the land-use types of
the initial surface dataset to vary over time.
|
char*256 |
clm_inparm |
fsnowaging
SNICAR (SNow, ICe, and Aerosol Radiative model) snow aging data file name
|
char*256 |
clm_inparm |
fsnowoptics
SNICAR (SNow, ICe, and Aerosol Radiative model) optical data file name
|
char*256 |
clm_inparm |
fsurdat
Full pathname of surface data file.
|
char*256 |
clm_inparm |
model_year_align_ndep
Simulation year that aligns with stream_year_first_ndep value
|
integer |
ndepdyn_nml |
ndepmapalgo
Mapping method from Nitrogen deposition input file to the model resolution
bilinear = bilinear interpolation
nn = nearest neighbor
nnoni = nearest neighbor on the "i" (longitude) axis
nnonj = nearest neighbor on the "j" (latitude) axis
spval = set to special value
copy = copy using the same indices
|
char*256 |
ndepdyn_nml |
stream_fldfilename_ndep
Filename of input stream data for Nitrogen Deposition
|
char*256 |
ndepdyn_nml |
stream_year_first_ndep
First year to loop over for Nitrogen Deposition data
|
integer |
ndepdyn_nml |
stream_year_last_ndep
Last year to loop over for Nitrogen Deposition data
|
integer |
ndepdyn_nml |
Namelist Variable |
Type |
Group |
albice
Visible and Near-infrared albedo's for glacier ice
|
real(2) |
clm_inparm |
co2_ppmv
Atmospheric CO2 molar ratio (by volume) only used when co2_type==constant (umol/mol)
(Set by CCSM_CO2_PPMV)
|
real |
clm_inparm |
co2_type
Type of CO2 feedback.
constant = use the input co2_ppmv value
prognostic = use the prognostic value sent from the atmosphere
diagnostic = use the diagnostic value sent from the atmosphere
|
char*16 |
clm_inparm |
create_crop_landunit
If TRUE, separate the vegetated landunit into a crop landunit and a natural vegetation landunit
|
logical |
clm_inparm |
dtime
|
real |
clm_inparm |
glc_dyntopo
If TRUE, dynamically change topographic height over glacier points.
Only works when glc_nec is greater than zero.
(EXPERIMENTAL AND NOT FUNCTIONAL!)
|
logical |
clm_inparm |
glc_grid
Glacier model grid
gland20 = Greenland at 20km resolution
gland10 = Greenland at 10km resolution
gland5 = Greenland at 5km resolution
gland5UM = Greenland at 5km resolution, using new UMontana ice sheet data for present day Greenland
|
char*10 |
clm_inparm |
glc_smb
If TRUE, calculate surface mass balance for glacier multi-elevation class points.
If false use growing degree day information for glaciers multi-elevation class points.
Only works when glc_nec is greater than 0.
(Only tested with glc_smb=.true., setting it to .false. is NOT tested)
|
logical |
clm_inparm |
maxpatch_glcmec
Number of multiple elevation classes over glacier points.
Normally this is ONLY used when running CESM with the active glacier model.
|
integer |
clm_inparm |
pertlim
Perturbation limit when doing error growth test
|
real |
clm_inparm |
suplnitro
Supplemental Nitrogen mode and for what type of vegetation it's turned on for.
In this mode Nitrogen is unlimited rather than prognosed and in general vegetation is
over-productive. It does act as a proxy for fertilization for crops however.
NONE = No vegetation types get supplemental Nitrogen
PROG_CROP_ONLY = Supplemental Nitrogen is only active for prognostic Crops
ALL = Supplemental Nitrogen is active for all vegetation types
|
char*15 |
clm_inparm |
urban_hac
Turn urban air conditioning/heating ON or OFF and add wasteheat:
OFF = Air conditioning/heating is OFF in buildings, internal temperature allowed to float freely
ON = Air conditioning/heating is ON in buildings, internal temperature constrained
ON_WASTEHEAT = Air conditioning/heating is ON and waste-heat sent to urban canyon
|
char*16 |
clm_inparm |
urban_traffic
If TRUE, urban traffic flux will be activated (Currently NOT implemented).
|
logical |
clm_inparm |
Namelist Variable |
Type |
Group |
hist_avgflag_pertape
Per file averaging flag.
'A' (average over history period)
'I' (instantaneous)
'X' (maximum over history period)
'M' (minimum over history period)
|
char*1(6) |
clm_inparm |
hist_dov2xy
If TRUE, implies output data on a 2D latitude/longitude grid. False means
output in 1D vector format. One setting per history tape series.
|
logical(6) |
clm_inparm |
hist_empty_htapes
If TRUE, indicates do NOT output any default history fields (requires you to use
hist_fincl* to set the exact output fields to use)..
|
logical |
clm_inparm |
hist_fexcl1
Fields to exclude from history tape series 1.
|
char*34(1000) |
clm_inparm |
hist_fexcl2
Fields to exclude from history tape series 2.
|
char*34(1000) |
clm_inparm |
hist_fexcl3
Fields to exclude from history tape series 3.
|
char*34(1000) |
clm_inparm |
hist_fexcl4
Fields to exclude from history tape series 4.
|
char*34(1000) |
clm_inparm |
hist_fexcl5
Fields to exclude from history tape series 5.
|
char*34(1000) |
clm_inparm |
hist_fexcl6
Fields to exclude from history tape series 6.
|
char*34(1000) |
clm_inparm |
hist_fincl1
Fields to add to history tape series 1.
|
char*34(1000) |
clm_inparm |
hist_fincl2
Fields to add to history tape series 2.
|
char*34(1000) |
clm_inparm |
hist_fincl3
Fields to add to history tape series 3.
|
char*34(1000) |
clm_inparm |
hist_fincl4
Fields to add to history tape series 4.
|
char*34(1000) |
clm_inparm |
hist_fincl5
Fields to add to history tape series 5.
|
char*34(1000) |
clm_inparm |
hist_fincl6
Fields to add to history tape series 6.
|
char*34(1000) |
clm_inparm |
hist_mfilt
Per tape series maximum number of time samples.
|
integer(6) |
clm_inparm |
hist_ndens
Per tape series history file density (i.e. output precision)
1=double precision
2=single precision
Default: 2,2,2,2,2,2
|
integer(6) |
clm_inparm |
hist_nhtfrq
Per tape series history write frequency.
positive means in time steps
0=monthly
negative means hours
(i.e. 5 means every 24 time-steps and -24 means every day
Default: 0,-24,-24,-24,-24,-24
|
integer(6) |
clm_inparm |
hist_type1d_pertape
Averaging type of output for 1D vector output (when hist_dov2xy is false).
GRID means average all land-units up to the grid-point level
LAND means average all columns up to the land-unit level
COLS means average all PFT's up to the column level
PFTS means report everything on native PFT level
|
char*4(6) |
clm_inparm |
wrtdia
If TRUE, write diagnostic of global radiative temperature written to CLM log file.
|
logical |
clm_inparm |