New URL for NEMO forge!

Since March 2022 along with NEMO 4.2 release, the code development moved to a self-hosted GitLab.
This present forge is now archived and remained online for history.
Users/Agenda/2013-02-13 – NEMO

Version 1 (modified by nicolasmartin, 7 years ago) (diff)


NEMO 3.4 release

Original publication (eZ): 2013-02-13 17:44 CET by clevy
Last edition: Wikinfo(changed_ts)? by Wikinfo(changed_by)?

  1. Major improvements
    1. New physics and numerics
    2. Configurations, diagnostics and tools
    3. System simplification
The new release 3.4 of NEMO is now available.

Note 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 (namelist ln_hpg_djc)
  • Completion of Griffies iso-neutral diffusion (ln_traldf_grif)
  • Back to a semi-implicit bottom friction (bugfree) (namelist ln_bfrimp)
  • Add Pacanowski-Philander scheme for computation of Ekman depth in zdfri
  • Add a new bulk formulae (namelist ln_blk_mfs and &namsbc_mfs)
  • Introduce a drag coefficient compute by wave model (new namelist &namsbc_wave)
  • Add tidal potential forcing (new namelist &nam_tide)
  • Neptune effect parametrization
  • Point to point MPI communication for north fold (namelist ln_nnogather)
  • Allow sub timestepping for biogeochemistry models when using non-linear free surface
  • 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 (key_amm_12km and input files)
  • Improvement of format for lagrangian floats
  • Online computing of transport across sections
  • Tidal harmonic analysis (new namelist &nam_diaharm)
  • Tools to prepare input files for observation operator
  • Timing functionality (namelist ln_timing)

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