MAPL interface to MOM4

From Maplcode.org

The GFDL MOM4 model is a community supported global ocean circulation model. Under the MAPL project, MOM4 is distributed as a MAPL-enabled ocean dynamical core.

Several interesting issues about coupling architecture were raised during the creation of a MAPL-MOM4 component. Most notably, MAPL architecture conceived of "ocean physics" and "ocean biology" as siblings of "ocean dynamics", whereas MOM4's native architecture conceived of them as children. Reconciling architectural issues of this nature are among the most interesting, and challenging, aspects of making MAPL applications.