Changes for on disk processing with GEOS-Chem specific speciation mechanism#2

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barronh:mainfrom

Commits on Jan 22, 2026

Added geoschem 14.6.2 speciation mechanism.
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Commits on Jan 23, 2026

Commits on Jan 28, 2026

Updated functions so that the speciation mechanism can be changed to a custom mechanism, other than cb6.
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Added example running cmaq2hemco tool from files on disk (SMOKE) using GEOS Chem speciation mechanism.
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Commits on Feb 4, 2026

Created gd2hemco_fast_3D and added 3D capabilities to gd_file.
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Commits on Feb 19, 2026

Added ability to open inline and stack groups files on disk. Added engine option to specify the backend used to open the netcdf file
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Commits on Mar 2, 2026

Added gc and nr used to specify speciation mechanism molecular weights in the p22hemco function. Added saftey mechanism by removing default speciation mechanisms from unitconvert options.
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Commits on Mar 27, 2026

Changed processing of point files. Added function to remove pollutants with zero emissions. Added arguments to set variables in run script using argparse.
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