global.param.sample

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# VIC Model Parameters - 4.1.x
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# $Id$
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# Simulation Parameters
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NLAYER		3	# number of soil layers
NODES		10	# number of soil thermal nodes 
TIME_STEP 	3	# model time step in hours (set to 24 if FULL_ENERGY = FALSE, set to < 24 if FULL_ENERGY = TRUE)
SNOW_STEP	3	# time step in hours for which to solve the snow model (should = TIME_STEP if TIME_STEP < 24)
STARTYEAR	2000	# year model simulation starts
STARTMONTH	01	# month model simulation starts
STARTDAY	01 	# day model simulation starts
STARTHOUR	00	# hour model simulation starts
ENDYEAR 	2000	# year model simulation ends
ENDMONTH	12	# month model simulation ends
ENDDAY		31	# day model simulation ends
FULL_ENERGY 	TRUE	# TRUE = calculate full energy balance; FALSE = compute water balance only
FROZEN_SOIL	TRUE	# TRUE = calculate frozen soils
QUICK_FLUX	FALSE	# TRUE = use simplified ground heat flux method of Liang et al (1999); FALSE = use finite element method of Cherkauer et al (1999)
QUICK_SOLVE	FALSE	# TRUE = Use Liang et al., 1999 formulation for iteration, but explicit finite difference method for final step.
NO_FLUX		FALSE	# TRUE = use no flux lower boundary for ground heat flux computation; FALSE = use constant flux lower boundary condition.  If NO_FLUX = TRUE, QUICK_FLUX MUST = FALSE
IMPLICIT	FALSE	# TRUE = use implicit solution for soil heat flux equation of Cherkauer et al (1999), otherwise uses original explicit solution.
EXP_TRANS	FALSE	# TRUE = exponentially distributes the thermal nodes in the Cherkauer et al. (1999) finite difference algorithm, otherwise uses linear distribution
SNOW_ALBEDO	USACE	# USACE = use traditional VIC algorithm based on US Army Corps of Engineers empirical snow albedo decay curves, using hard-coded dates for transitions from snow accumulation to melting; SUN1999 = use algorithm of Sun et al 1999, in which albedo decay depends on snow cold content (more appropriate for simulations outside the US).
SNOW_DENSITY	DENS_BRAS	# DENS_BRAS = use traditional VIC algorithm taken from Bras, 1990; DENS_SNTHRM = use algorithm taken from SNTHRM model.
BLOWING		FALSE	# TRUE = compute evaporative fluxes due to blowing snow
DIST_PRCP	FALSE	# TRUE = use distributed precipitation
PREC_EXPT	0.6	# exponent for use in distributed precipitation eqn (only used if DIST_PRCP is TRUE)
CORRPREC	FALSE	# TRUE = correct precipitation for gauge undercatch
MIN_WIND_SPEED	0.1	# minimum allowable wind speed (m/s)
MAX_SNOW_TEMP	0.5	# maximum temperature (C) at which snow can fall
MIN_RAIN_TEMP	-0.5	# minimum temperature (C) at which rain can fall
CONTINUEONERROR	TRUE	# TRUE = if simulation aborts on one grid cell, continue to next grid cell
TFALLBACK	TRUE	# TRUE = when temperature iteration fails to converge, use previous time step's T value
COMPUTE_TREELINE	FALSE	# Can be either FALSE or the id number of an understory veg class; FALSE = turn treeline computation off; VEG_CLASS_ID = replace any overstory veg types with the this understory veg type in all snow bands for which the average July Temperature <= 10 C (e.g. "COMPUTE_TREELINE 10" replaces any overstory veg cover with class 10)
EQUAL_AREA	FALSE	# TRUE = grid cells are from an equal-area projection; FALSE = grid cells are on a regular lat-lon grid
RESOLUTION	0.125	# Grid cell resolution (degrees if EQUAL_AREA is FALSE, km^2 if EQUAL_AREA is TRUE); ignored if LAKES is FALSE
AERO_RESIST_CANSNOW	AR_406_FULL	# Options for aerodynamic resistance in snow-filled canopy:
			# AR_406 	= multiply by 10 for latent heat but do NOT multiply by 10 for sensible heat and do NOT apply stability correction (as in VIC 4.0.6); when no snow in canopy, use surface aero_resist for ET.
			# AR_406_LS 	= multiply by 10 for latent heat AND sensible heat and do NOT apply stability correction; when no snow in canopy, use surface aero_resist for ET.
			# AR_406_FULL 	= multiply by 10 for latent heat AND sensible heat and do NOT apply stability correction; additionally, always use overstory aero_resist for ET (as in 4.1.0).
			# AR_410 	= apply stability correction but do NOT multiply by 10 (as in VIC 4.1.0); additionally, always use overstory aero_resist for ET (as in 4.1.0).
			# AR_COMBO 	= multiply by 10 AND apply stability correction; additionally, always use overstory aero_resist for ET (as in 4.1.0).
			# Default 	= AR_406_FULL
GRND_FLUX_TYPE	GF_410	# Options for ground flux:
			# GF_406 = use (flawed) formulas for ground flux, deltaH, and fusion from VIC 4.0.6 and earlier;
			# GF_410 = use formulas from VIC 4.1.0 (ground flux, deltaH, and fusion are correct; deltaH and fusion ignore surf_atten);
			# GF_FULL = (use is discouraged; only kept for backwards-compatibility) use formulas from VIC 4.1.0 and also take surf_atten into account in deltaH and fusion
			# Default = GF_410
PLAPSE		FALSE	# This controls how VIC computes air pressure when air pressure is not supplied as an input forcing: TRUE = set air pressure to sea level pressure, lapsed to grid cell average elevation; FALSE = set air pressure to constant 95.5 kPa (as in all versions of VIC pre-4.1.1)
MTCLIM_SWE_CORR	TRUE    # This controls VIC's estimates of incoming shortwave in the presence of snow; TRUE = adjust incoming shortwave for snow albedo effect; FALSE = do not adjust shortwave; default = TRUE
VP_ITER		VP_ITER_ALWAYS	# This controls VIC's iteration between estimates of shortwave and vapor pressure:
			# VP_ITER_NEVER = never iterate; make estimates separately
			# VP_ITER_ALWAYS = always iterate once
			# VP_ITER_ANNUAL = iterate once for arid climates based on annual Precip/PET ratio
			# VP_ITER_CONVERGE = iterate until shortwave and vp stabilize
			# default = VP_ITER_ALWAYS
VP_INTERP	TRUE	# This controls sub-daily humidity estimates; TRUE = interpolate daily VP estimates linearly between sunrise of one day to the next; FALSE = hold VP constant for entire day
LW_TYPE		LW_TVA	# This controls the algorithm used to estimate clear-sky longwave radiation:
			# LW_TVA = Tennessee Valley Authority algorithm (1972)
			# other options listed in vicNl_def.h
			# default = LW_TVA (this was also the traditional VIC algorithm)
LW_CLOUD	LW_CLOUD_DEARDORFF	# This controls the algorithm used to estimate the influence of clouds on total longwave:
			# LW_CLOUD_BRAS = method from Bras textbook (this was the traditional VIC algorithm)
			# LW_CLOUD_DEARDORFF = method of Deardorff (1978)
			# default = LW_CLOUD_DEARDORFF

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# State Files and  Parameters
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#INIT_STATE	(put the initial state path/filename here)	# Initial state path/file
#STATENAME	(put the path/prefix of output state file here)	# Output state file path/prefix.  The date (STATEYEAR,STATEMONTH,STATEDAY) will be appended to the prefix automatically in the format yyyymmdd.
#STATEYEAR	2000	# year to save model state
#STATEMONTH	12	# month to save model state
#STATEDAY	31	# day to save model state
#BINARY_STATE_FILE       FALSE	# TRUE if state file should be binary format; FALSE if ascii

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# Forcing Files and Parameters
#
#       All FORCING filenames are actually the pathname, and prefix
#               for gridded data types: ex. DATA/forcing_
#               Latitude and longitude index suffix is added by VIC
#
#	There must be 1 FORCE_TYPE entry for each variable (column) in the forcing file
#
#	If FORCE_TYPE is BINARY, each FORCE_TYPE must be followed by:
#			SIGNED/UNSIGNED	SCALE_FACTOR
#		For example (BINARY):
#			FORCE_TYPE	PREC	UNSIGNED	40
#		or (ASCII):
#			FORCE_TYPE	PREC
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FORCING1	(put the forcing path/prefix here)	# Forcing file path and prefix, ending in "_"
FORCE_FORMAT	BINARY	# NETCDF or BINARY or ASCII
FORCE_ENDIAN	LITTLE	# LITTLE (PC/Linux) or BIG (SUN)
N_TYPES		4	# Number of variables (columns)
FORCE_TYPE	PREC	UNSIGNED	40
FORCE_TYPE	TMAX	SIGNED	100
FORCE_TYPE	TMIN	SIGNED	100
FORCE_TYPE	WIND	SIGNED	100
FORCE_DT	24	# Forcing time step length (hours)
FORCEYEAR	2000	# Year of first forcing record
FORCEMONTH	01	# Month of first forcing record
FORCEDAY	01	# Day of first forcing record
FORCEHOUR	00	# Hour of first forcing record
GRID_DECIMAL	4	# Number of digits after decimal point in forcing file names
WIND_H          10.0    # height of wind speed measurement (m)
MEASURE_H       2.0     # height of humidity measurement (m)
ALMA_INPUT	FALSE	# TRUE = ALMA-compliant input variable units; FALSE = standard VIC units

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# Land Surface Files and Parameters
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SOIL            (put the soil parameter path/file here)	# Soil parameter path/file
ARC_SOIL        FALSE   # TRUE = read soil parameters from ARC/INFO ASCII grids
#SOIL_DIR        (soil param directory)   # Directory containing ARC/INFO ASCII grids of soil parameters - only valid if ARC_SOIL is TRUE
BASEFLOW	ARNO	# ARNO = columns 5-8 are the standard VIC baseflow parameters; NIJSSEN2001 = columns 5-8 of soil file are baseflow parameters from Nijssen et al (2001)
JULY_TAVG_SUPPLIED	FALSE	# TRUE = final column of the soil parameter file will contain average July air temperature, for computing treeline; this will be ignored if COMPUTE_TREELINE is FALSE; FALSE = compute the treeline based on the average July air temperature of the forcings over the simulation period
ORGANIC_FRACT	FALSE	# TRUE = simulate organic soils; soil param file contains 3*Nlayer extra columns, listing for each layer the organic fraction, and the bulk density and soil particle density of the organic matter in the soil layer; FALSE = soil param file does not contain any information about organic soil, and organic fraction should be assumed to be 0
VEGLIB	        (put the veg library path/file here)	# Veg library path/file
VEGPARAM        (put the veg parameter path/file here)	# Veg parameter path/file
ROOT_ZONES      3	# Number of root zones (must match format of veg param file)
VEGPARAM_LAI 	FALSE    # TRUE = veg param file contains LAI information; FALSE = veg param file does NOT contain LAI information
LAI_SRC 	LAI_FROM_VEGLIB    # LAI_FROM_VEGPARAM = read LAI from veg param file; LAI_FROM_VEGLIB = read LAI from veg library file
SNOW_BAND	1	# Number of snow bands; if number of snow bands > 1, you must insert the snow band path/file after the number of bands (e.g. SNOW_BAND 5 my_path/my_snow_band_file)
#LAKES		(put lake parameter path/file here)	# Lake parameter path/file
#LAKE_PROFILE	FALSE	# TRUE = User-specified depth-area parameters in lake parameter file; FALSE = VIC computes a parabolic depth-area profile

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# Output Files and Parameters
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RESULT_DIR      (put the result directory path here)	# Results directory path
OUT_STEP        0       # Output interval (hours); if 0, OUT_STEP = TIME_STEP
SKIPYEAR 	0	# Number of years of output to omit from the output files
COMPRESS	FALSE	# TRUE = compress input and output files when done
BINARY_OUTPUT	FALSE	# TRUE = binary output files
ALMA_OUTPUT	FALSE	# TRUE = ALMA-format output files; FALSE = standard VIC units
MOISTFRACT 	FALSE	# TRUE = output soil moisture as volumetric fraction; FALSE = standard VIC units
PRT_HEADER	FALSE   # TRUE = insert a header at the beginning of each output file; FALSE = no header
PRT_SNOW_BAND   FALSE   # TRUE = write a "snowband" output file, containing band-specific values of snow variables; NOTE: this is ignored if N_OUTFILES is specified below.

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#
# Output File Contents
#
# As of VIC 4.0.6 and 4.1.0, you can specify your output file names and
# contents # in the global param file (see the README.txt file for more
# information).
#
# If you do not specify file names and contents in the global param
# file, VIC will produce the same set of output files that it has
# produced in earlier versions, namely "fluxes" and "snow" files, plus
# "fdepth" files if FROZEN_SOIL is TRUE and "snowband" files if
# PRT_SNOW_BAND is TRUE.  These files will have the same contents and
# format as in earlier versions.
#
# The OPTIMIZE and LDAS_OUTPUT options have been removed.  These
# output configurations can be selected with the proper set of
# instructions in the global param file.  (see the output.*.template
# files included in this distribution for more information.)
#
# If you do specify the file names and contents in the global param file,
# PRT_SNOW_BAND will have no effect.
#
# Format:
#
#   N_OUTFILES    <n_outfiles>
#
#   OUTFILE       <prefix>        <nvars>
#   OUTVAR        <varname>       [<format>        <type>  <multiplier>]
#   OUTVAR        <varname>       [<format>        <type>  <multiplier>]
#   OUTVAR        <varname>       [<format>        <type>  <multiplier>]
#
#   OUTFILE       <prefix>        <nvars>
#   OUTVAR        <varname>       [<format>        <type>  <multiplier>]
#   OUTVAR        <varname>       [<format>        <type>  <multiplier>]
#   OUTVAR        <varname>       [<format>        <type>  <multiplier>]
#
#
# where
#   <n_outfiles> = number of output files
#   <prefix>     = name of the output file, NOT including latitude
#                  and longitude
#   <nvars>      = number of variables in the output file
#   <varname>    = name of the variable (this must be one of the
#                  output variable names listed in vicNl_def.h.)
#   <format>     = (for ascii output files) fprintf format string,
#                  e.g.
#                    %.4f = floating point with 4 decimal places
#                    %.7e = scientific notation w/ 7 decimal places
#                    *    = use the default format for this variable
#
#   <format>, <type>, and <multiplier> are optional.  For a given
#   variable, you can specify either NONE of these, or ALL of
#   these.  If these are omitted, the default values will be used.
#
#   <type>       = (for binary output files) data type code.
#                  Must be one of:
#                    OUT_TYPE_DOUBLE = double-precision floating point
#                    OUT_TYPE_FLOAT  = single-precision floating point
#                    OUT_TYPE_INT    = integer
#                    OUT_TYPE_USINT  = unsigned short integer
#                    OUT_TYPE_SINT   = short integer
#                    OUT_TYPE_CHAR   = char
#                    *               = use the default type
#   <multiplier> = (for binary output files) factor to multiply
#                  the data by before writing, to increase precision.
#                    *    = use the default multiplier for this variable
#
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