CMIP7. Rejected following discussion concluding that this is not a useful parameter: https://journals.ametsoc.org/view/journals/phoc/49/9/jpo-d-19-0102.1.xml.
ocean_freshwater_transport_across_line kg s-1 [KGPS] Ocean transport means transport by all processes, both sea water and sea ice. Transport "across_line" means that which crosses a particular line on the Earth's surface; formally this means the integral along the line of the normal component of the transport.