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Input ERA15 DATA

ECMWF data (stored at NCAR) is stored one file per month for the 3D data and one file for every six months of surface data, so the ERA_GRIB_SFC.1993jan* files, contain surface data for January / February / March / April / May and June 1993.

A typical example of the data files a listed below (ECMWF Reanalysis data dataset ds115).

   ERA_GRIB_SFC.1993jan00Z     ERA_GRIB_SFC.1993jan06Z
   ERA_GRIB_SFC.1993jan12Z     ERA_GRIB_SFC.1993jan18Z
   ERA_GRIB_UPA.1993mar00Z     ERA_GRIB_UPA.1993mar06Z
   ERA_GRIB_UPA.1993mar12Z     ERA_GRIB_UPA.1993mar18Z
.

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/ERA

# 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}/ERA* )

# 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 = ()

# There are no SOIL data available in these files
# set SRCSOIL = $SRC3D

#There are no SOIL data available in these files
# set InSoil = ()

#
# Remember to set the correct dates for your case
#
START_YEAR = 1993 # Year (Four digits)
START_MONTH = 03 # Month ( 01 - 12 )
START_DAY = 13 # Day ( 01 - 31 )
START_HOUR = 00 # Hour ( 00 - 23 )

END_YEAR = 1993 # Year (Four digits)
END_MONTH = 03 # Month ( 01 - 12 )
END_DAY = 14 # Day ( 01 - 31 )
END_HOUR = 00 # Hour ( 00 - 23 )

INTERVAL = 43200

# This is GRIB data so we need to supply the correct Vtables here - USE THE ERA Vtables which has been created for this dateset
set VT3D = ( grib.misc/Vtable.ERA3D )
set VTSST = ( grib.misc/Vtable.ERASST )
set VTSNOW = ( grib.misc/Vtable.ERASNOW )
set VTSOIL = ( grib.misc/Vtable.xxxSOIL )     << ERA15 DATASETS DO NOT HAVE SOIL DATA

Check the contents of your input analysis files to ensure the Vtable GRIB Codes correspond to the GRIB codes in the analysis files. ECMWF datasets is one of the datasets that do not conform to the WMO GRIB standards. For example: Field WMO GRID Codes ERA15 GRIB Codes Temperature 11 130 RH 52 157 U 33 131 WEASD 65 141