Changes between Version 5 and Version 6 of OMI_observation_operators_PDAF3


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Timestamp:
Jun 11, 2025, 3:59:45 PM (6 days ago)
Author:
lnerger
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  • OMI_observation_operators_PDAF3

    v5 v6  
    2929== Observation operators ==
    3030
    31 OMI currently provides 3 observation operators:
     31OMI currently provides 4 observation operators:
    3232 - '''[wiki:PDAFomi_obs_op_gridpoint]'''[[br]]
    3333  This observation operator is used for the case that observations are model variables located at grid points. Thus, the operation is to select single element from the state vector according to the index array `thisobs%id_obs_p` initialized in `init_dim_obs_OBSTYPE`.
    … …  
    3636 - '''[wiki:PDAFomi_obs_op_interp_lin]'''[[br]]
    3737  This observation operator computes the observation by linear interpolation. It uses the index array `thisobs%id_obs_p` and the array `thisobs%icoeff_p` holding interpolation coefficients initialized in `init_dim_obs_OBSTYPE`. To use this observation operator, one has to allocate and initialize `thisobs%icoeff_p` as described below.
     38 - '''[wiki:PDAFomi_obs_op_gatheronly]'''[[br]]
     39  This observation operator is used for strongly coupled data assimililation in coupled models. It served for the particular case that model variables are observed in a coupled model system in another model component only. For this case, this observation operator only performs the gather operation to obtain the full observations.
    3840
    3941The arguments of the observation operators are