NCMERGE.DAT

Basic Information

File-Type

ncmerge.dat

File-Form

FORMATTED

Version

March 2024

Description-Date

January 2022

Significance of the File

contains general steering data for the program NCMERGE.

File-Contents (in Catchwords)

steering data

• Block Program_Parameters: general steering data
  1. Max_Read_Storage: Maximum number of data values that can be read for each input variable in a read-write cycle. Default = 125000000.
  2. (optional) Create_Missing_Variables: Generate additional variables
     • 0 = do not create additional variables (default)
     • 1 = generate additional variables (in combination with DFlow FM)
  3. (optional) NC_Deflate_Level: Compression of the result data
     • 0 = no compression
     • 1 ... 8 = compression (default = 3)
     • 9 = maximum compression
  4. (optional) END_After_Define: Abort after generating the metadata of the output file
     • .false. = Program runs through to the end (default)
     • .true. = Program ends after definition of the result file (metadata)
• (optional) Block Hash_Identity_Checks: inter-comparison of MD5-Hash values
  1. Check_MD5
     • Name of MD5 hash variable to be compared;
     • Descriptor for file to be compared;
     • Requirement for compliance
       • STRICT (exact),
       • WARNING (Warning in case of differences)

Remark: the same MD5 hash variable must be present in all input NetCDF files.

• Block Input_Files: input files
  1. Data_File: Name and type of the input file (file of type netcdf.nc)

- at least two files must be prescribed

- files must exist

Remark: Following file type several optional key-value pairs can be added

- TA=DD.MM.YYYY-hh:mm:ss start time

- TE=DD.MM.YYYY-hh:mm:ss end time

- TZ=UTC MEZ MESZ ... time zone

- DT=dddddd-hh:mm:ss output time step

• Block Output_File: output file
  1. Data_File Name and type of the output file (file of type netcdf.nc)

- file must not exist

General Remarks

1. Used dictionary files from directory $PROGHOME/dic/:
   • ncmerge_dico.dat.

Programs using this Type of File

NCMERGE

Example-File

$PROGHOME/examples/ncmerge/ncmerge.dat

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