| 5 | 5 | This routine provides the application of observation operator for the case that model variables are observed in a coupled model system only in another model component. Thus, `dim_obs_p=0` for the calling model component. Accordingly, this observation operator only performs the gather operation to obtain the full observations. An example for using this observation operator is in the case of a coupled atmosphere-ocean model in which the atmosphere component model runs with different processes than the ocean components. If one assimilates observations of the ocean with strongly-coupled data assimilation into the atmosphere in this system, the atmosphere would call `PDAFomi_obs_op_gatheronly`, while the ocean would call, e.g., an observation operator involving interpolation. |
