message_ix_models.project.navigate.wp2.util.add_CCS_constraint

message_ix_models.project.navigate.wp2.util.add_CCS_constraint(scen: Scenario, maximum_value: float, type_rel: Literal['lower', 'upper']) → None

Add a CCS limit.

The function assumes that scen uses the R12 code list and has a set element n=``R12_GLB``.

Parameters:

maximum_value (str) – This should correspond to units of Gt CO₂ / year. Note that if type_rel is “lower”, this is actually a minimum value.