Clarification on the Difference Between 'frequency' and 'duration' in HISTORY.rc

[ChenBHXMU]

Your name

Baihua Chen

Your affiliation

Xiamen University

Please provide a clear and concise description of your question or discussion topic.

Dear @yantosca

I hope this message finds you well. I am writing to seek clarification on two specific parameters in the GEOS-Chem model configuration, specifically frequency and duration within the HISTORY.rc file.

I have a configuration snippet as follows:

SpeciesCofnc.template:       '%y4%m2%d2_%h2%n2z.nc4',
SpeciesConc.format:         'CFIO',
SpeciesConc.frequency:      00000001 000000
SpeciesConc.duration:       00000001 000000
SpeciesConc.mode:           'time-averaged'
SpeciesConc.fields:         'SpeciesConcVV_?ADV?',

Based on my understanding, this configuration dictates that the output files will be stored in the OutputDir with a time interval of one day. Within each file, the SpeciesConcVV_?ADV? values represent averages calculated every 6 hours. Is this interpretation correct?

Thank you for your time and assistance.

Best regards, Baihua Chen

[yantosca]

Thanks for writing @ChenBHXMU. We have a good explanation on our ReadTheDocs documentation:

https://geos-chem.readthedocs.io/en/latest/geos-chem-shared-docs/supplemental-guides/history-diag-guide.html#histguide

[ChenBHXMU]

Thank you! @yantosca

[yantosca]

Thank you @ChenBHXMU! Closing out this issue.