Changes between Version 1 and Version 2 of ImplementAnalysis_3DVar


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Timestamp:
Dec 8, 2021, 6:31:36 PM (12 months ago)
Author:
lnerger
Comment:

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  • ImplementAnalysis_3DVar

    v1 v2  
    149149It has to apply the adjoint control vector transformation to a state vector and return the control vector. Usually this transformation is the multiplication with transposed of the square-root of the background error covariance matrix '''B'''.
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    151 If the control vector is decomposed in case of parallelization it first needs to the gathered on each processor and afterwards the transformation is computed on the potentially domain-decomposed state vector
     151If the state vector is decomposed in case of parallelization one needs to take care that the application of the trasformation is complete. This usually requries a comminucation with MPI_Allreduce to obtain a global sun.
    152152
    153 See the [wiki:OMI_Callback_obs_pdafomi documentation on callback_obs_pdafomi.F90] for more information.
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