Intermediate File Format - WPS

Record 1:  IFV
Record 2:  HDATE, XFCST, MAP_SOURCE, FIELD, UNITS, DESC, XLVL, NX, NY, IPROJ
  if (IPROJ == 0) (Cylindrical equidistant projection)
        Record 3:  STARTLOC, STARTLAT, STARTLON, DELTALAT, DELTALON, EARTH_RADIUS
  else if (IPROJ == 1) (Mercator projection)
        Record 3:  STARTLOC, STARTLAT,STARTLON, DX, DY, TRUELAT1, EARTH_RADIUS
  else if (IPROJ == 3) (Lambert conformal projection)
        Record 3:  STARTLOC, STARTLAT, STARTLON, DX, DY, XLONC, TRUELAT1, TRUELAT2, EARTH_RADIUS
  else if (IPROJ == 4) (Gaussian projection)
        Record 3:  STARTLOC, STARTLAT, STARTLON,NLATS, DELTALON, EARTH_RADIUS
  else if (IPROJ == 5) (Polar-stereographic projection)
        Record 3:  STARTLOC, STARTLAT, STARTLON, DX, DY, XLONC, TRUELAT1, EARTH_RADIUS
  endif
Record 4:  IS_WIND_EARTH_REL
Record 5:  SLAB

Where:

IFV	integer	intermediate-format version number for WPS is 5
HDATE	character (LEN=24)	The time, in format "YYYY-MM-DD_HH:mm:ss     " (only the first 19 characters are used)
XFCST	real	Forecast time (in hours) of the data in the slab
MAP_SOURCE	character (LEN=32)	Source of data
FIELD	character (LEN=9)	A field name.  Names with special meaning are described below.
UNITS	character (LEN=25)	Units describing the field in the slab.
DESC	character (LEN=46)	Text description of the field in the slab.
XLVL	real	Pressure-level (Pa) of the data.  200100 Pa indicates surface data; 201300 Pa indicates sea-level pressure
NX	integer	Slab dimension in the X direction
NY	integer	Slab dimension in the Y direction
IPROJ	integer	Flag denoting the projection.  Recognized values are:      0:  Cylindrical Equidistant (Lat/lon) projection.      1:  Mercator projection.      3:  Lambert-conformal projection.      4:  Gaussian projection.      5:  Polar-stereographic projection.
STARTLOC	character (LEN=8)	Start location of data. Could be "CENTER" or "SWCORNER". "SWCORNER" is typical.
STARTLAT	real	Starting latitude (degrees north)
STARTLON	real	Starting longitude (degrees east)
DELTALAT	real	Latitude increment (degrees) for lat/lon grid
DELTALON	real	Longitude increment (degrees) for lat/lon grid
NLATS	real	Number of latitudes north of equator (for Gaussian grids)
DX	real	Grid-spacing in x (km at TRUELAT1 (and TRUELAT2 as appropriate))
DY	real	Grid-spacing in y (km at TRUELAT1 (and TRUELAT2 as appropriate))
XLONC	real	Center longitude of the projection
TRUELAT1	real	Extra latitude (degrees north) used for defining Mercator, Polar Stereographic, and Lambert conformal projections
TRUELAT2	real	A second extra latitude (degrees north) used for defining Lambert conformal projection
EARTH_RADIUS	real	Radius of the earth
IS_WIND_EARTH_REL	logical	Logical flag use to indicate if Lambert projected data has Earth or model rotated winds.
SLAB	real, dimension(NX,NY)	Two-dimensional array of data.

**Note: A sample program is available to write data in the WPS intermediate file format.