GEMPAK Manual |
Programs | Parameters
SNPRMF
SNPRMF specifies the packing formation for the sounding file to be
created. It may be the name of a sounding parameter packing file or
the information itself entered as follows:
SNPRMF = PRM1/MIN1-MAX1-RES1;PRM2/MIN2-MAX2-RES2; ...
where each PRMi, MINi, MAXi, and RESi is the parameter name, minimum,
maximum and resolution for a parameter to be included in the file.
If SNPRMF specifies a file name, then each line of the file must
contain the following information separated by blanks or tabs:
parameter name CHAR*4
minimum data value REAL
maximum data value REAL
resolution REAL
The resolution should be an integral power of 10; otherwise the next
smaller resolution will be used ( e.g., res = .5 will become .1).
If the data are not to be packed, the minimum and maximum data values
and the resolution should not be included. Note that either all of
the parameters or none of them must have packing information.
It is important to remember to include the vertical coordinate in
the parameter packing list.
SNMERG.PACK is a typical table used to pack sounding data.
This file may be used as an example when creating a packing file.
Note that if MRGDAT is NO, the data will be packed using the standard
packing for unmerged data, and the value of SNPRMF will be ignored.
When SNPRMF is used with program NAMSND, the user must supply the
parameter packing file name. In this case, two more entries are
required for lines of the file, in addition to the four listed
above. These entries must contain the GEMPAK names corresponding
to the BUFR sounding data parameters listed in the NAMSND output file
bufr_table.dump. The order of the GEMPAK names must be the same as
the order of the BUFR parameters, although the names themselves do
not have to be the same. The fifth column is the real conversion
factor to be applied to the GEMPAK parameter named in the sixth
(last) column. Note that the last two columns of data are
independent of the first four, and are used only for BUFR to GEMPAK
conversion. The parameter named in column one does not necessarily
have any relationship to the one referenced in columns five and six.
Diagnosed or extra computed parameters may be added anywhere in the
packing file for profile data.