Setting the compression level to 0 will make no compression for the NetCDF output. The value of “level” will override the default setting of 0 from the configuration file or the environment variable MET_NC_COMPRESS. The -compress level option indicates the desired level of compression (deflate level) for NetCDF variables. Setting the verbosity to 0 will make the tool run with no log messages, while increasing the verbosity above 1 will increase the amount of logging. The value of “level” will override the default setting of 2. The -v level option indicates the desired level of verbosity. Thus, users can save the messages without having to redirect the output on the command line. All messages will be written to that file as well as standard out and error. The -log file option directs output and errors to the specified log file. It collects the available variable list from BUFR input and checks the existence of valid data and directs the variable names with valid data to the screen. The -index option shows the available variables with valid data from the BUFR input. The user may use this option to view a human-readable version of the input PrepBUFR file, although writing the contents to ASCII files can be slow. The -dump path option may be used to dump the entire contents of the PrepBUFR file to several ASCII files written to the directory specified by “path”. This option is provided to speed up testing because running the PB2NC tool can take a few minutes for each file. This argument indicates that only the first “num_messages” PrepBUFR messages should be processed rather than the whole file. The -nmsg num_messages option may be used for testing purposes. The -valid_end time option in YYYYMMDD] format sets the end of the retention time window. The -valid_beg time option in YYYYMMDD] format sets the beginning of the retention time window. The -pbfile prepbufr_file option is used to pass additional input PrepBUFR files. The contents of the configuration file are discussed below. The config_file argument is the configuration file to be used. The netcdf_file argument is the output NetCDF file to be written. The prepbufr_file argument is the input PrepBUFR file to be processed. Pb2nc has both required and optional arguments. Appendix B Map Projections, Grids, and Polylines Regional Verification using Spatial Masking
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