Add sectors to BB4CMIP

[chrisroadmap]

The BB4CMIP data on ESGF has separate netCDF files for the sources of what is being burned (grassland, forest, etc). The GFED data from 1997 onwards includes these sectors and we process them. For completeness we should probably also do this with the pre-1997 biomass burning emissions from BB4CMIP.

[jkikstra]

Linking to comment #35

[znichollscr]

@chrisroadmap just to check: the BB4CMIP data is a huge archive if we download all the individual stuff. We can do this, but it'll blow out storage and compute time by a factor of five so I would only do it if we really feel we need it. I can't see the added value of having the breakdown by what is burning back to 1750, but I could easily be missing something.

[chrisroadmap]

I wonder if we can do this in another repo then and read in processed CSV files. All we would need to do here is verify that the hashes of the files haven't changed.

As a minimum, having the global total values in 1850 and 1750 is useful since we can quickly sense-check any models with odd-looking aerosol forcing in the 21st century

[znichollscr]

Global total we have, just not broken down by species. If you think that breakdown is important, then I would follow your lead and just do it in this repo.

[chrisroadmap]

Breakdown by species is important, but no further breakdown is necessary.

[znichollscr]

Oops yep sorry my typing is terrible. We have the breakdown by species, just not by sector (i.e. we don't get the split of forest vs. peat vs. agriculture).