Changes between Initial Version and Version 1 of Changelog

Timestamp:

2017-06-08T15:31:13+02:00 (7 years ago)

Author:

clevy

Comment:

--

Changelog

@@ +1 @@
+= NEMO Release notes
+
+[[PageOutline(2-4)]]
+Last edition: '''[[Wikinfo(changed_ts)]]''' by '''[[Wikinfo(changed_by)]]'''
+
+== 2005-2006 From Tag nemo_v1 to nemo_v2
+
+=== New science:
+
+* Add the 1D configuration option
+* KPP turbulent closure scheme implementation
+* Implement CFC tracers and p4z
+* Add new surface pressure gradient algorithms and its interface to Open Boundary Conditions module
+* First implementation of AGRIF 2 ways nesting tool
+* Implement overturning computation for main basins
+* Implement ice damping in buffer zones
+* Implement 1D on-line & off-line passive tracers
+* Implement new tracers advection scheme UBS
+* Implement computation of mean trends in the mixed layer taking into account the asselin time filter
+
+=== New High Performance Computing:
+
+* Implementation of a hierarchy of debugging levels
+* Rewriting of NEMO-TOP biogeochemistry component
+* Remove some of the bio models (p3zd,npzd, hamocc3, age, gosac)
+* Switch to IOIPSL-3-0 new input output library
+* Switch rigid lid to option rather than default
+* Re-organization of coordinate definition, scale factors are now 3d by default, include file for partial steps has been removed
+* Implement IO Manager module
+* Enables bit comparison between single and multiple processor runs
+* Implement OASIS3 and OASIS4 interfaces to buid coupled ocean-atmosphere configurations
+
+== 2007 From tag nemo_v2 to nemo_2_3
+
+=== New science:
+
+* Implement non linear free surface (variable volume)
+* Implement Kriest parameterization in NEMO-TOP
+* Implement AGRIF 2 ways nesting for passive tracers
+* Implement quickest scheme for tracers
+
+=== New High Performance Computing:
+
+== 2008 From tag nemo_v2.3 to nemo_v3_1
+
+=== New science:
+
+* Open Boundaries BDY package as unstructured boundaries, and OBCs pakage entirely cleaned and documented,
+* New TKE physics
+* New sea-ice NEMO-LIM 3.0 (key_lim3) component including: ice-thickness categories, EVP rheology on C-Grid, ice salinity variations interfaced with the new surface module
+
+=== New High Performance Computing:
+
+* New surface module in NEMO-OPA
+* Namelists entire re-organisation, improve readability and coherence
+* Improvement of IOManager now able to handle long simulations and so to manage successive input files from one year to an other
+* Improvements of AGRIF performance and users interface
+* improved vectorial performances (~5%) of the rheology module in LIM 2.0
+* TOP reorganisation with one directory by model Fully written in Fortran 90, include all SMS models ( PISCES, LOBSTER, CFC ...) and interface for users developemnt through the MY_TRC directory)
+* Update IOM modules for OFFLINE tracers
+* Interpolation On the Fly
+* Passive tracers used with AGRIF package
+
+== 2009 From tag nemo_v3_1 to nemo_v3_2
+
+''This release has been mainly designed for climate models, with enhanced coupling interface and implementation of AR5 diagnostics.''
+
+=== New science:
+
+* tidal mixing parametrization (bottom intensification) + Indonesian specific tidal mixing
+* RGB light penetration and optional use of ocean color
+* vvl option has been restored, including revisit free-surface time-splitting algorithm to reach stability and satisfying result and have vvl option available for all type of coordinates (z, zps, s)
+* TKE change in the surface boundary condition, especially in coupled mode (mean stress module send by the atmosphere)
+
+=== New High Performance Computing:
+
+* the way to handle outputs has been improved
+* implementation of IOM for output with the following functionalities : allows to output at few frequencies during same simulation, e.g both monthly and daily; output vectors/scalars is also available (for a strait transport calculation or for a vertical profile associated to buoys location for instance), and make easier the way to add an output everywhere in the code
+* Suppression of rigid-lid option and no more island specific treatment
+* Cleaning of lib_mpp
+* SHMEM option has been removed
+* north fold treatment is now done once for all in a new routine lbcnfd.F909 instead of being duplicated
+* suppression of redundant east-west communication phase (ORCA grid case)
+
+== 2010 From tag nemo_v3_2 to nemo_v3_3
+* 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” ;
+* a 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 ;
+* a deep re-writting and simplification of the off-line tracer component (OFF SRC) ;
+* the 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.
+
+== 2011 From tag nemo_v3_3 to nemo_v3_4
+
+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
+
+ 
+== 2012 From nemo_v3_4 to nemo_v3_5
+
+Brief overview of the v3_5_alpha majors improvements and developments:
+
+    The new Input/Output server XIOS is a major evolution including a versatile xml interface, the dedicated processors for I/O functionality allowing improved scalability, and a large performance improvement on massively parallel platforms. This option is now set as the default one. The previous IOIPSL code and interface are kept as backup options at this stage.
+=== Interfaces:
+* Ocean/ice/biogeochemistry/atmosphere: revisit heat/salt(tracers)/mass fluxes ; new levitating & embedded sea-ice (for LIM & CICE)
+* AGRIF is now sea-ice (LIM) compatible using a new AGRIF package shared with other GCMs
+* Compilation with external biogeochemistry model
+* Improved CICE-NEMO interface
+* ICB module (Bigg et al 1997, Martin and Adcroft 2010): icebergs as lagrangian floats (~200,000!) allowing improved fresh water input especially in the Southern ocean
+* SAS: Stand Alone Surface module allowing testing of forcing set with bulk formulae, to run sea-ice models without ocean, to run ICB icebergs module alone, and to test AGRIF with sea-ice
+* Biogeochemical component NEMO-TOP: PISCES will now include the LOBSTER functionalities, becoming more general and allowing a simplification and reduction of code size
+* Open boundaries module: merging the two existing options (OBC and BDY) has made some important progress (end of the work expected for 2013)
+* Wave-NEMO interface module has been further developed with the introduction of the reading of the 2D stoke drift and wave number and the on-line computation of the 3D stoke drift current.
+
+And also:
+
+     A new vertical sigma coordinate stretching function (Siddorn and Furner OM 2012r)
+    Smagorinsky eddy coefficients: Smagorinsky type diffusivity/viscosity for lateral mixing has been introduced
+    ·Analytical tropical cyclones taken in account using track and magnitude observations (Vincent et al. JGR 2012a,b)
+    MUSCL: an option for local up-stream advection schemes which are useful in case of rivers, straits and in proximity of open lateral boundary conditions. The possibility to switch from MUSCL to a standard up-stream scheme has been included in the MUSCL advection routine
+     NEMO-OBS: observation operators. Add a model equivalent of SST at night
+     Log layer for bottom friction is now added (sigma coordinates only)
+    ·Evolution of SETTE validation tool
+
+ 2014 From nemo_v3_5 to nemo_v3_6
+
+This new 3_6_alpha includes all the developments of 3_5 (especially the new XIOS IO system) , and new features:
+
+    Open boundaries: completion of BDY/OBC merge
+    Solved 2 time stepping issues
+    Faster split-explicit time stepping, Z-tilde ALE coordinates, implicit bottom friction
+    First version of Configuration Manager
+    Major evolution of LIM sea-ice model (including towards LIM2/LIM3 merge)
+    Standalone OBS component and improvements in OBS&ASM
+    Coupled interface for next IPCC requirements (multi category sea-ice, calving and iceberg module)
+    Runoff improved and SBC with BGC
+    MPP assessment and optimisation
+    Standard Fox Kemper parametrisation
+    First steps of wave coupling
+    On line coarsening of ocean I/O
+    Solar flux filtering at daily frequency to force BGC component
+    Atmospheric forcing at land-ocean interface
+
+2015: From nemo_v3_6 to nemo_v3_6_STABLE: the release from CMIP6 experiments:
+
+Main new features
+
+    Coupled interface for next IPCC requirements (multi category sea-ice, calving and iceberg module)
+      Runoff improved and SBC with BGC
+      Solar flux filtering at daily frequency to force BGC component
+      Major evolution of LIM sea-ice model (including LIM3 in mono category, i.e. similar to LIM2)
+      On line coarsening of ocean I/O
+      Ocean and ice allowed to be explicitly coupled through OASIS, using StandAlone Surface module)
+      First steps of wave coupling
+      MPI optimisation
+      XIOS new IO system
+      Standard Fox Kemper parametrisation
+      Atmospheric forcing at land-ocean interface
+       Open boundaries: completion of BDY/OBC merge
+      Solved 2 time stepping issues
+      Faster split-explicit time stepping, Z-tilde ALE coordinates, implicit bottom friction
+      First version of Configuration Manager
+      Standalone OBS component and improvements in OBS&ASM
+
+Features becoming obsolete:
+
+    LIM2 (replaced by LIM3 monocategory)
+
+List of associated branches
+
+    On line coarsening of biogeochemistry
+
+---------------------------
+
+TO BE ADDED (was before 3.2 but version to be checked):
+
+        transition to full native FORTRAN 90, deep code restructuring and drastic reduction of CPP keys ;
+        introduction of partial step representation of bottom topography [Barnier et al. 2006, Le Sommer et al. 2009, Penduff et al. 2007] ;
+        partial reactivation of a terrain-following vertical coordinate (s- and hybrid s-z) with the addition of several options for pressure gradient computation 5 ;
+        more choices for the treatment of the free surface : full explicit, split-explicit or filtered schemes, and suppression of the rigid-lid option ;
+        non linear free surface associated with the rescaled height coordinate z* or s;
+        additional schemes for vector and flux forms of the momentum advection ;
+        additional advection schemes for tracers ;
+        online diagnostics : tracers trend in the mixed layer and vorticity balance ;
+        rewriting of the I/O management with the use of an I/O server ;
+        generalized ocean-ice-atmosphere-CO2 coupling interface, interfaced with OASIS 3 coupler ;
+        surface module (SBC) that simplify the way the ocean is forced and include two bulk formulea (CLIO and CORE) and which includes an on-the-fly in- terpolation of input forcing fields ;
+        major changes in the TKE schemes : it now includes a Langmuir cell pa- rameterization [Axell 2002], the Mellor and Blumberg [2004] surface wave breaking parameterization, and has a time discretization which is energeti- cally consistent with the ocean model equations [Burchard 2002, Marsaleix et al. 2008] ;
+        tidal mixing parametrisation (bottom intensification) + Indonesian specific tidal mixing [Koch-Larrouy et al. 2007] ;
+
+Copyright © 2008 NEMO Consortium