Is the conversion to strings in ``cdm_mapper.map_model`` required?

[ludwiglierhammer]

Current State

At the end of cdm_mapper.map_model, all data types are converted to strings.

• strings stay strings
• integers are converted to strings
• floats are converted to strings with a specific amount of decimal places
• datetimes are converted to strings with a specific format

https://github.com/glamod/cdm_reader_mapper/blob/main/cdm_reader_mapper/cdm_mapper/utils/conversions.py

Questions

• I think we do this conversion since the current output format is csv, isn't it?
• Is this required for CDM-OBS model?