Revised function call to include, ymd3 = creation date (in ISO 8601) format. Included this value in global attribute field for the metadata.
Included a function call to write ssi to netcdf4 output. Added ymd3 variable = creation date (using system time, converted to iso date format). Modified function calls to the write routines for tsi and ssi to include the ymd3 variable.
Modified file in how it uses the creation date variable for meta data global attribute. Modified the netcdf dimensions definition to use the spectral_bins structure for define the number of wavelengths.
Sample .nc4 output files created from the nrl2_to_irradiance driver.