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Plan on running MM5 later with the Noah or PX LSM model?

You MUST have input data that contain soil fields. NCAR has 4 types of datasets that contain the extra soil fields needed to run either the Noah or the PX LSM model. NCEP Final Analysis (FNL) (ds083.2) NCEP/NCAR Reanalysis (ds090.0) NCEP Eta analyses and forecasts (ds609.2) ECMWF Reanalysis ER40 (ds118)

Download the test dataset: ftp://ftp.ucar.edu/mesouser/MM5V3/TESTDATA/FNL_test_data.TAR.gz

Inside the test dataset listed above, you will find the following files:

   FNL/fnl_030311_00_00
   FNL/fnl_030311_06_00
   FNL/fnl_030311_12_00
   FNL/fnl_030311_18_00
   FNL/fnl_030312_00_00

All fields for each time period is stored in a separate file.

Below is an extract from the pregrid.csh file. Listed are the settings you need to change / pay attention to.

# Tell the script in which directory the data file is
set DataDir = /home/$USER/MM5V3/REGRID/pregrid/FNL

# These data files are in GRIB format
#set SRC3D = ON84       # Old ON84-formatted NCEP GDAS analyses
# set SRC3D = NCEP    # Newer GRIB-formatted NCEP GDAS analyses
set SRC3D = GRIB     # Many GRIB-format datasets

# Tell the script where the data files are, and that you called them (wild card permitted)
set InFiles = ( ${DataDir}/fnl* )

# The source of our SST is the same as for the 3D and surface data
set SRCSST = $SRC3D
# set SRCSST = ON84
# set SRCSST = NCEP
# set SRCSST = NAVY

# Since the SST data is also in these files, there is no need to repeat the details here
set InSST = ( )

# The source of our SNOW cover data is the same as for the 3D and surface data
set SRCSNOW = $SRC3D
# set SRCSNOW = ON84
# set SRCSNOW = GRIB

# Since the SNOW cover data is also in these files, there is no need to repeat the details here
set InSnow = ()

# The source of our SOIL cover data is the same as for the 3D and surface data
set SRCSOIL = $SRC3D

# Since the SOIL cover data is also in these files, there is no need to repeat the details here
set InSoil = ()

#
# Remember to set the correct dates for your case
#
START_YEAR = 2003 # Year (Four digits)
START_MONTH = 03 # Month ( 01 - 12 )
START_DAY = 11 # Day ( 01 - 31 )
START_HOUR = 00 # Hour ( 00 - 23 )

END_YEAR = 2003 # Year (Four digits)
END_MONTH = 03 # Month ( 01 - 12 )
END_DAY = 12 # Day ( 01 - 31 )
END_HOUR = 00 # Hour ( 00 - 23 )

INTERVAL = 21600

# This is GRIB data so we need to supply the correct Vtables here - AVN and FNL data has the same grib codes, so we will use the AVN Vtables here as they have already been created
set VT3D = ( grib.misc/Vtable.AVN3D )
set VTSST = ( grib.misc/Vtable.AVNSST )
set VTSNOW = ( grib.misc/Vtable.ANVSNOW )
set VTSOIL = ( grib.misc/Vtable.AVNSOIL )     

Check the contents of your input analysis files (i.e., fnl_030311_* in this case) to ensure the Vtable GRIB Codes correspond to the GRIB codes in the analysis files. For example, the list below was generated from the FNL GRIB file directly. Compare that to the Vtable.AVNSOIL to ensure the correct information will be obtained from the GRIB file during the pregrid stage TMP:   kpds5=11:  kpds6=112: 0-10 cm down TMP:   kpds5=11:  kpds6=112: 10-200 cm down SOILW: kpds5=144: kpds6=112: 0-10 cm down SOILW: kpds5=144: kpds6=112: 10-200 cm down ICEC:  kpds5=91:  kpds6=1:   sfc LAND:  kpds5=81:  kpds6=1:   sfc HGT:   kpds5=7:   kpds6=1:   sfc

This will create the following files:

  FILE:2003-03-11_00
  FILE:2003-03-11_06
  FILE:2003-03-11_12
  FILE:2003-03-11_18
  FILE:2003-03-12_00
  SST_FILE:2003-03-11_00
  SST_FILE:2003-03-11_06
  SST_FILE:2003-03-11_12
  SST_FILE:2003-03-11_18
  SST_FILE:2003-03-12_00
  SNOW_FILE:2003-03-11_00
  SNOW_FILE:2003-03-11_06
  SNOW_FILE:2003-03-11_12
  SNOW_FILE:2003-03-11_18
  SNOW_FILE:2003-03-12_00
  SOIL_FILE:2003-03-11_00
  SOIL_FILE:2003-03-11_06
  SOIL_FILE:2003-03-11_12
  SOIL_FILE:2003-03-11_18
  SOIL_FILE:2003-03-12_00

To use these files in regridder set root in the regridder namelist to:

   root = '../pregrid/FILE' '../pregrid/SST_FILE' '../pregrid/SNOW_FILE' '../pregrid/SOIL_FILE'

Noah LSM Model
PX LSM Model