[PULL REQUEST] Add metal species in the offline simulation

[junweilovexu]

Add metal species in the offline simulation. In species suffix: _F1 = bin1; _F2 = bin2; _C3=bin3; _C4 = bin4. Bin sizes are the same as dust bins

[msulprizio]

The input.geos.txt file corresponding to this updates is attached here.

For other input file updates, see geoschem/geos-chem-unittest#26.

[msulprizio]

Randall Martin suggests including this as an option to the Transport Tracers simulation or as a separate specialty simulation.

[yantosca]

Hi @junweilovexu (CC: @msulprizio), I am looking at this PR. I have a couple of questions:

1. I noticed that some of the data files have data for each day of the year and each hour. Do we need the hourly resolution or is daily resolution OK? I am concerned that adding hourly data I/O to the TransportTracers simulation will slow down that simulation by a lot.
2. I also noticed that the data files use double-precision for the data variables instead of single-precision. Can we change those to single precision? (I think that can be done with an one-liner: cdo -b f64 copy input.nc output.nc).

[yantosca]

Also, it seems that in the http://rain.ucis.dal.ca/ctm/ForGCST/NATA folder, we only have a full year of data for the surface inventory, but not for the ptegu, ptonipm, and oilgas data files. I don't know if these files disappeared off the server of if they were never there. In any case, I will disable these emissions by default until further notice. We do have 365 days of the surface data, so I will use those. @junweilovexu @msulprizio

[yantosca]

This PR is now superseded by #769. We can close this.