Version release-3.4

Released 9 years ago (2012-02-13T17:46:04+01:00)

This is a major release and the documentation has been updated in consequence.

Major improvements

New physics and numerics

  • New pressure gradient suitable for s-coordinate
  • Completion of Griffies iso-neutral diffusion
  • Back to a semi-implicit bottom friction
  • Add Pacanowski-Philander scheme for computation of Ekman depth
  • Add a new bulk formulae (so called MFS)
  • Introduce a drag coefficient compute by wave model
  • Add tidal potential forcing
  • Netpune effect parametrization
  • Point to point MPI communication for north fold
  • Allow sub timestepping for biogeochemistry models when using non-linear free surfac
  • Improvement in PISCES (light limitation ; quota model for iron ; use Pa in gas exchange ; fldread for all data ; calcite dissolution & calcon salinity dependence )

Configurations, diagnostics and tools

  • Suppression of POMME configuration
  • Addition of a regional configuration AMM12
  • Improvement of format for lagrangian floats
  • Online computing of transport across sections
  • Tidal harmonic analysis
  • Tools to prepare input files for observation operator
  • Timing functionality

System simplification

  • Simplification of dynamic allocation
  • End of merge TRA/TRA (no more separate 3d arrays for tracers, only 4d)
  • Suppression of obsolete hpg options
  • More flexible definition of BDY input data
  • simplification of interfaces toward biogeochemical models
  • Interface with CICE in coupled mode
  • Use of fldread to read/interpolate data for passive tracers and dynamical input data for OFFLINE configurations
  • Introduction of a modified leapfrog-Asselin filter time stepping scheme [Leclair and Madec 2009] ;
  • Additional scheme for iso-neutral mixing [Griffies et al. 1998], although it is still a ”work in progress” ;
  • Rewriting of the bottom boundary layer scheme, following Campin and Goosse [1999] ;
  • Addition of a Generic Length Scale vertical mixing scheme, following Um- lauf and Burchard [2003] ;
  • Addition of the atmospheric pressure as an external forcing on both ocean and sea-ice dynamics ;
  • Addition of a diurnal cycle on solar radiation [Bernie et al. 2007] ; river runoffs added through a non-zero depth, and having its own temperature and salinity ;
  • CORE II normal year forcing set as the default forcing of ORCA2-LIM configuration ;
  • Generalisation of the use of fldread.F90 for all input fields (ocean climatology, sea-ice damping…) ;
  • Addition of an on-line observation and model comparison (thanks to NEMOVAR project) ;
  • Optional application of an assimilation increment (thanks to NEMOVAR project) ;
  • Coupling interface adjusted for WRF atmospheric model ;
  • C-grid ice rheology now available for both LIM-2 and LIM-3[Bouillon et al. 2009] ;
  • LIM-3 ice-ocean momentum coupling applied to LIM-2 ;
  • Deep re-writting and simplification of the off-line tracer component (OFF SRC) ;
  • Merge of passive and active advection and diffusion modules ;
  • Use of the Flexible Configuration Manager (FCM) to build configurations, generate the Makefile and produce the executable ;
  • Linear-tangent and Adjoint component (TAM) added, phased with v3.0

In addition, several minor modifications in the coding have been introduced with the constant concern of improving the model performance.

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