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Back to Example List
Using
NCEP GDAS data as input
Inside the test dataset listed above, you will find the following
files:
JAN00/NCEP_GRIB.200001
JAN00/obs:2000-01-24_00
JAN00/obs:2000-01-24_06
JAN00/obs:2000-01-24_12
JAN00/obs:2000-01-24_18
JAN00/obs:2000-01-25_00
JAN00/obs:2000-01-25_06
JAN00/obs:2000-01-25_12
JAN00/obs:2000-01-25_18
JAN00/obs:2000-01-26_00
JAN00/surface_obs_r:2000-01-24_00
JAN00/surface_obs_r:2000-01-24_03
JAN00/surface_obs_r:2000-01-24_06
JAN00/surface_obs_r:2000-01-24_09
JAN00/surface_obs_r:2000-01-24_12
JAN00/surface_obs_r:2000-01-24_15
JAN00/surface_obs_r:2000-01-24_18
JAN00/surface_obs_r:2000-01-24_21
JAN00/surface_obs_r:2000-01-25_00
JAN00/surface_obs_r:2000-01-25_03
JAN00/surface_obs_r:2000-01-25_06
JAN00/surface_obs_r:2000-01-25_09
JAN00/surface_obs_r:2000-01-25_12
JAN00/surface_obs_r:2000-01-25_15
JAN00/surface_obs_r:2000-01-25_18
JAN00/surface_obs_r:2000-01-25_21
JAN00/surface_obs_r:2000-01-26_00
The highlighted file is the only one of interest now.
The other files are observations that can be used in LITTLE_R.
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/JAN00
# These data files are in NCEP GDAS 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}/NCEP* )
# 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 = ()
# We are not interested in SOIL data at this stage
# set SRCSOIL = $SRC3D
# We are not interested in SOIL data at this stage
# set InSoil = ()
#
# Remember to set the correct dates for your case
#
START_YEAR = 2000 # Year (Four digits)
START_MONTH = 01 # Month ( 01 - 12 )
START_DAY = 24 # Day ( 01 - 31 )
START_HOUR = 00 # Hour ( 00 - 23 )
END_YEAR = 2000 # Year (Four digits)
END_MONTH = 01 # Month ( 01 - 12 )
END_DAY = 26 # Day ( 01 - 31 )
END_HOUR = 00 # Hour ( 00 - 23 )
INTERVAL = 21600
# Although NCEP GDAS data is GRIB data,
pregrid knows how to deal with this data, and Vtables are NOT
needed
set VT3D = ( grib.misc/Vtable.xxx3D )
set VTSST = ( grib.misc/Vtable.xxxSST )
set VTSNOW = ( grib.misc/Vtable.xxxSNOW )
set VTSOIL = ( grib.misc/Vtable.xxxSOIL )
This will create
the following files:
NCEP:2000-01-24_00
NCEP:2000-01-24_06
NCEP:2000-01-24_12
NCEP:2000-01-24_18
NCEP:2000-01-25_00
NCEP:2000-01-25_06
NCEP:2000-01-25_12
NCEP:2000-01-25_18
NCEP:2000-01-26_00
NCEP_SST_FILE:2000-01-24_00
NCEP_SST_FILE:2000-01-24_06
NCEP_SST_FILE:2000-01-24_12
NCEP_SST_FILE:2000-01-24_18
NCEP_SST_FILE:2000-01-25_00
NCEP_SST_FILE:2000-01-25_06
NCEP_SST_FILE:2000-01-25_12
NCEP_SST_FILE:2000-01-25_18
NCEP_SST_FILE:2000-01-26_00
NCEP_SNOW_FILE:2000-01-24_00
NCEP_SNOW_FILE:2000-01-24_06
NCEP_SNOW_FILE:2000-01-24_12
NCEP_SNOW_FILE:2000-01-24_18
NCEP_SNOW_FILE:2000-01-25_00
NCEP_SNOW_FILE:2000-01-25_06
NCEP_SNOW_FILE:2000-01-25_12
NCEP_SNOW_FILE:2000-01-25_18
NCEP_SNOW_FILE:2000-01-26_00
To use these files in regridder set root in
the regridder namelist to:
root = '../pregrid/FILE'
'../pregrid/SST_FILE' '../pregrid/SNOW_FILE'
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Using this dataset,
see how to run LITTLE_R to create a SFCFDDA_DOMAIN1 input
file for MM5 |
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