...
| HPARN | Parameter | Comments | Default |
|---|---|---|---|
| 'accuracy' | INTV(1) = n | n is the number of bits to be used for each packed value. | As input. 16 if input is array. |
| 'area' | REALV(1) = North REALV(2) = West REALV(3) = South REALV(4) = East | Negative values: west of Greenwich and south of the Equator. 0/0/0/0 signifies the whole globe. | 0/0/0/0 |
| 'bitmap' | CHARV = filename | 'filename' is a unix file containing a bitmap definition. | None |
| 'form' | CHARV(1) = 'grib' CHARV(2) = 'unpacked' | Input fields are in GRIB. Input fields are in a REAL array. | 'grib' |
| 'frame' | INTV(1) = n | n is the width of the frame in grid points. | None |
| 'gaussian' | INTV(1) = n | n is the gaussian grid number. | None |
| 'gauss_from_file' | CHARV = filename | 'filename' is a unix file defining a (reduced)
gaussian grid. It contains 32-bit integers:
- the gaussian grid number, N say
- the number of points at latitude 1
(the northern latitude)
- the number of points at latitude 2
...
- the number of points at latitude N
The grid is assumed symmetric about the Equator,
only Northern Hemisphere latitudes are defined. | None |
| 'g_lats' | REALV(1) = 1_lat REALV(2) = 2_lat : REALV(n) = n_lat | n_lat is the row latitude. n is the number of latitude rows between a Pole and the Equator (the gaussian grid number). | * |
| 'g_pnts' | INTV(1) = 1_lat INTV(2) = 2_lat : INTV(n) = n_lat | n_lat is the number of grid points along the latitude. n is the number of latitude rows between a Pole and the Equator (the gaussian grid number). | * |
| 'grid' | REALV(1) = WE REALV(2) = NS | WE is the grid spacing west to east. NS is the grid spacing north to south. | None None |
| 'level' | INTV(1) = n | n is the field level (code table 3). | None |
| 'levtype' | INTV(1) = n | n is the type of level (code table 3). | None |
| 'packing' | CHARV = 'simple' CHARV = 'complex' CHARV = 'second order' CHARV = 'archived value' | simple: simple packing for spectral or grid point.
complex: complex packing for spectral data.
second order: second-order packing for grid-point data.
archived value: packing corresponding to that of the input.
| 'archived value' |
| 'reduced' | INTV(1) = n | n is the number of latitude rows between a Pole and the Equator (the gaussian grid number). Currently, only n=80 or n=160 are supported. | As input if GRIB, otherwise none. |
| 'regular' | INTV(1) = n | n is the number of latitude rows between a Pole and the Equator (the gaussian grid number). Currently, only n=80 or n=160 are supported. | As input if GRIB, otherwise none. |
| 'rotation' | REALV(1) =lat REALV(2) =long | lat/long gives the latitude/longitude of the point which becomes the new south pole of the rotated field. | None |
| 'scan' | INTV(1) = n | scanning mode (code table 8).
0 = data values scanned west to east within lines, lines
scanned from north to south.
| 0 |
| 'specification' | INTV(1) = 12 | Specification of reduced gaussian grid to use.Can only be used with N80 or N160 reduced grids to force an old grid definition to be used (Research Department designated _12) which has 12 points in the northernmost and southernmost latitudes. 12 = RD definition _12 | Operational reduced gaussian specification |
| 'style' | CHARV(1) = 'dissemination' | A latitude/longitude grid point field is generated at resolution 0.5x0.5. Points for the desired output resolution are selected from the 0.5x0.5 grid. | - |
| 'table' | INTV(1) = n | n is the version number of the parameter code table. 1 = WMO 128 = ECMWF local table | 128 |
| 'truncation' | INTV(1) = n | n is the spectral truncation. | None |
| 'user_reduced_gaussian' | INTV(1) = n | n is the number of latitude rows between a pole and the equator (the gaussian grid number). | None |
| 'user_regular_gaussian' | INTV(1) = n | n is the number of latitude rows between a pole and the equator (the gaussian grid number). | None |