Add new basins to GCAM - Question

[rubcalvo]

Dear all, I have a question about adding new basins to GCAM. Sorry if this is not the right place, but I did not know where else to ask.

I want to create new basins because in some cases current GCAM basins include very differents regions. Example: Northern Chile, as in current GCAM basins, includes Atacama Desert and Mediterranean Central Chile, hence, water availability impacts could be under/overestimated as most of the agricultural activities is taken place in Central Chile.

I know that rgcambreakout can create new economic regions, but I have not seen something like this for basins o gcam land regions. Does someone knows an article or documentation that can help to do something like this?

Thanks!