Intermediate File Format: MM5

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

Where:

IFV	integer	intermediate-format version number for MM5 is 3
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
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.      5:  Polar-stereographic projection.
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
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
SLAB	real, dimension(NX,NY)	Two-dimensional array of data.