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Project Documents
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| Introduction to the project |
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| User guide for the new PV code, (April 07) |
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| Summary of code changes, (Feb. 07) |
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| New PV-based control variables in Met Office VAR (Vn 07) (Main project working document, updated Feb. 09) |
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| Putting back global mean pressure (added April 2009) |
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| The diagonal preconditioner (updated Nov. 2008) |
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| The vertical tridiagonal preconditioner (updated Nov. 2007) |
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| ADI preconditioner (updated Nov. 2008) |
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| Cut-off wavenumbers for unbalanced pressure (updated Feb. 2009) |
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| Analysis of correlation plots (standard and PV-based variables) (added March 2007) |
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| A list of diagnostics needed to assess this scheme (added 04/09/06) |
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| Summary of basic equations (added October 2007) |
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| A summary of the transforms |
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| MetO seminar (Sept 04) |
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| Poster (Prague WMO Conference, April 2005) "A Potential Vorticity (PV) based control variable control parameter for background error covariance modelling" |
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| Details about the adjoint of the 'zero adjustment' step associated with the Poisson solver (this process in not actually needed in the code used) |
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| Check for zero PV in unbalanced transform (added 25/02/05) |
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| Check for zero PV in unbalanced transform (uses frames, added 15/03/05) |
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| Details about density scaling |
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| Derivation of PV for the vertical modes [OBSOLETE] |
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| Pictures of PV of normal modes - try 1 (simple projection) [OBSOLETE] |
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| Pictures of PV of normal modes - try 2 (derivation of PV-like quantity in grid space) [OBSOLETE] |
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| Pictures of PV of normal modes - try 3 (derivation of PV-like quantity via spectral space) [OBSOLETE] |
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| Pictures of vorticity projected onto normal modes [OBSOLETE] |
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Page last updated 16/02/09. Ross Bannister.