NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.

To learn about what's going on, see About the Archive Site.

CONDUIT file name format

NCEP file names

data/nccf/com/nam/prod/nam.YYYYMMDD/nam.tHHz.grididFF.tm00_ext !GRIB_version/ncep/NAM_84/#GGG/YYYYMMDDHHNN/Ffff/parm/level_cord! ######
                                             ^                      ^        ^     ^     ^        ^          ^    ^     ^             ^
                                             |                      |        |     |     |        |          |    |     |             |
                                             |                      |        |     |     |    model date     |  grid    |         grid number
                                          data file name            |     issuing  |   grid                  |parameter |         in original
                                          on file server            |      center  |  number                 |          |         data file
                                                                    |              |                      forecast      |
                                                                data type       model id                    hour    grid level

GRIB1 products

GGG = 212, Grid #212, 40Km Lambert conformal, GRIB_version=grib, gridid = awip3d, ICWF grids use _ext=icwf (to be removed Oct. 30, 2007)
GGG = 216, Grid #216, 45Km Polar Stereographic Alaska sector, GRIB_version=grib, gridid = awipak (to be removed Oct. 16, 2007)
GGG = 104, Grid #104, 90Km Polar Stereographic, GRIB_version=grib, gridid = grbgrd (to be removed Oct. 16, 2007)

GRIB2 products

GGG = 000, Grid #218, 12Km Lambert conformal, GRIB_version=grib2, gridid = awip12, _ext=.grib2 (added Oct. 24, 2006)
GGG = 000, Grid #212, 40Km Lambert conformal, GRIB_version=grib2, gridid = awip3d, _ext=.grib2 (to be added Oct. 16, 2007)
GGG = 000, Grid #216, 45Km Polar Stereographic, GRIB_version=grib2, gridid = awipak, _ext=.grib2 (added Oct. 2, 2007)
GGG = 000, Grid #104, 90Km Polar Stereographic, GRIB_version=grib2, gridid = grbgrd, _ext=.grib2 (added Oct. 2, 2007)
GRIB2 Note: "model date" and "forecast hour" fields are not separated by "/"

LDM patterns for selected processing

# File Using NCEP file names
CONDUIT	^(data/nccf/com/nam.*) !(.*)!
	FILE	data/pub/raw/conduit/\1
#
# Pipe NAM #212 to decoder
CONDUIT    nccf/com/nam.*awip3d
        PIPE    decoder
#
# Pipe NAM #216 to decoder
CONDUIT    nccf/com/nam.*awipak
        PIPE    decoder
#
# Pipe NAM #104 to decoder
CONDUIT    nccf/com/nam.*grbgrd
        PIPE    decoder
#
# Pipe NAM #218 to decoder
CONDUIT    nccf/com/nam.*awip12
        PIPE    decoder

To restrict the above actions to just GRIB2 data during transition period, append ".*grib2" to the filename portion of the above patterns, eg:

# Pipe NAM #212 to decoder
CONDUIT    /nam.*awip3d.*grib2
        PIPE    decoder
#