Opened 10 years ago

Closed 10 years ago

#428 closed upgrade (Done)

Stabilized Rpresenter Matrix Array Modes and Clipped Analysis

Reported by: arango Owned by: arango
Priority: major Milestone: Release ROMS/TOMS 3.4
Component: Nonlinear Version: 3.4
Keywords: Cc:


  • A new driver array_modes_w4dvar.h was added to compute either the requested array mode eigenvector (ARRAY_MODES) or clipped spectrum analysis (CLIPPING) of the stabilized representer matrix during weak constraint, variational data assimilation. The array mode analysis can be used to assess the observing system, prior covariance hypothesis, and the stability of the generalized inverse.
  • The following new CPP options are added:
    ARRAY_MODES         use if computing W4DVAR representer matrix array modes
    ARRAY_MODES_SPLIT   use to separate analysis due to IC, forcing, and OBC
    CLIPPING            use if computing W4DVAR representer matrix clipping analysis
    CLIPPING_SPLIT      use to separate analysis due to IC, forcing, and OBC
    RECOMPUTE_4DVAR     use if recomputing W4DVAR in analysis algorithms
  • A new parameter, Nvct, is added to input script If ARRAY_MODES is activated, Nvct is the eigenvector the stabilized representer matrix to process (Nvct=1 is the less important, and Nvct=Ninner is the most important). If CLIPPING is activated, only eigenvectors Nvct:Ninner will be processed and the rest will be disgarded.

Many thanks to Andy Moore for his help coding and testing this new driver.

Change History (1)

comment:1 Changed 10 years ago by arango

  • Resolution set to Done
  • Status changed from new to closed
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