Table of Contents - The Atmospheric Studies Group at TRC

Section 7: Prognostic Meteorological Interfaces
CALETA Input Files
AWIPS GRIB file
All AWIPS files used by CALETA can be downloaded for the NCEP web site:
ftpprd.ncep.noaa.gov:/pub/data/nccf/com/nam/prod/
AWIPS 212 files also exist at the NWS web site:
tgftp.nws.noaa.gov:/SL.us008001/ST.opnl.
The content of AWIPS212 files on these two web sites is the same, but the naming convention is
different. Examples of file names on these web sites are listed in Table 7-11. These names do not contain
the date associated with the start of each model application period. Therefore, the files must either be
stored in separate folders or renamed. If files are not renamed, they should be placed in folders that carry
the date and time of the run in the form: YYYYMMDDHH. If they are renamed, CALETA expects an
extension at the end of the original name. The form of this extension is “AWIPSXXX_YYYYMMDD”
for files downloaded from the NCEP web site, and “AWIPSXXX_YYYYMMDDHH” for files
downloaded from the NWS web site, where “XXX” is the AWIPS grid and “YYYYMMDDHH” is the
UTC year, month, day and hour of initial date and time. Examples of renamed files are also listed in
Table 7-11.
CALETA.INP
In CALETA.INP, the user specifies the path of input AWIPS files, output file name, horizontal and
vertical ranges for extraction, the AWIPS grid format, beginning and ending dates, time interval of initial
hours of the runs, and three flags identifying the running mode and file naming convention. An example
of CALETA.INP is given in Table 7-12 and described in Table 7-13. In CALETA.INP, the content after
“!”is made up of comments that are not read by the program. There should be no blank space at the
beginning of any records, but there should be at least on blank space before “!” if it exists.
Record 2 of CALETA.INP is the path of downloaded AWIPS files. For original AWIPS file names, files
must reside in subdirectories of this path with a name of the form YYYYMMDDHH. For example, if
Record 2 is “d:\task2\eta\” and users want to create a 3D.DAT file using the simulation run at initial hour
06 UTC on April 2, 2005, AWIPS GRIB files should reside in the directory “d:\task2\eta\2005040206\”.
The subdirectory “2005040206” should not be included in Record 2, since the code will add this
subdirectory name to the path listed in Record 2. For renamed AWIPS file names, Record 2 is the actual
path of renamed files. For example, all files should be in the “d:\task2\eta\” if downloaded files have
been renamed. The back slash (“\”) at the end of the path is needed; otherwise errors will occur. If the
path is current directory, “.\” should be used.
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