NEMO 2016 workplan - Shared actions

Last edited Wikinfo(changed_ts)? by Wikinfo(changed_by)?

NEMO System Team members working on 2016 Shared Actions:

Name	Institution	%	Position
Dorotea Iovino	CMCC	40	Officer
Stefania Ciliberti	CMCC	20	Scientist
Tomas Lovato	CMCC	20	Scientist
Silvia Mocavero	CMCC	20	Scientist
Simona Flavoni	CNRS LOCEAN-IPSL, Paris	50	Officer
Christian Ethé	CNRS IPSL, Paris	50
Claire Lévy	CNRS LOCEAN_IPSL, Paris	100	Project manager
Pierre-Antoine Bouttier	CNRS LGGE- OSUG, Grenoble	50
Sébastien Masson	CNRS LOCEAN-IPSL, Paris	50
Nicolas Martin	CNRS LOCEAN-IPSL, Paris	50
Gurvan Madec	CNRS LOCEAN-IPSL, Paris	30	Scientific Leader
Clément Rousset	CNRS LOCEAN-IPSL, Paris	30
Martin Vancoppenolle	CNRS LOCEAN-IPSL, Paris	20
Emanuela Clementi	INGV	30	Scientist - Officer
Damiano Delrosso	INGV	40	Research Associate
Gelsomina Mattia	INGV	30	Research Associate
Clément Bricaud	Mercator Océan	40	Officer
Jérôme Chanut	Mercator Océan	20
Julien Paul	Mercator Océan	20
Romain Bourdalle-Badie	Mercator Océan	20
Mondher Chekki	Mercator Océan	20
Tim Graham	Met Office	40	Officer
Pierre Mathiot	Met Office	20
Dave Storkey	Met Office	20
Enda O'Dea	Met Office	20
Andrew Coward	NOC-S	60	Officer
James Harle	NOC-L	20

Inputs from working groups:

• Actions on system simplification towards 4.0 can be find here: 2014WP/2014_SystemSimplification_v2

• The status and details of the intrusive simplification work already done is located here : ticket/1593_CNRS9_NOC3_LDF

• HPC actions listed below are the list of required actions. What we can do this year remains to be determined. See Sebastien Masson's document for more details: HPC_tasks_Masson.doc

• From Robustness and tests cases working group, state of the art and 2016 suggestions are here: Input to the Workplan 2016?

Summary of Shared Actions:

Action	Brief description		Institution	PI	Previewer (and reviewer)	Ticket	Preview & Review wiki page (use this template?)	Review status	Status end 2016
AGRIF
AGRIF-1	Continue vertical grid refinement from 2015		Met Office	Tim Graham
AGRIF-2	AGRIF + LIM3		CNRS	Clément Rousset / Claire Lévy	Rachid Benshila & Jérôme Chanut				to be continued in 2017
AGRIF-3	AGRIF + VVL (2 way nesting)		Mercator Océan	Jérôme Chanut
HPC
HPC-1	Suppress Global Comms		CMCC / Met Office	Silvia Mocavero / Tim Graham	Andrew Coward		2016WP/HPC-1_SilviaMocavero
HPC-2	Gather communications		Barcelona / Mercator Océan	Miguel Castrillo / Mondher Chekki
HPC-3	Suppress useless communications		Met Office	Tim Graham
HPC-4	Scalability with MPI-OPENMP		CMCC	Silvia Mocavero	Tim Graham	#1726	2016WP/HPC-4_SilviaMocavero
HPC-5	Implement larger haloes		NERC	Andrew Coward					postponed
Config. Manager
CONFIGMAN-1	SIREN improvement and robustness		MERCATOR	julien PAUL
CONFIGMAN-2	BDY tool tests		NERC/CMCC	James Harle / Stefania Ciliberti
CONFIGMAN-3	publicize SIREN and get feedbacks from user		MERCATOR	julien PAUL
System simplification
SIMPLIF-1	Completion of 2015 work + Simplification of vertical physics		CNRS	Gurvan Madec
SIMPLIF-2	Re-writing of interface between NEMO core and configurations ; remove all hard-coded		CNRS	Simona Flavoni	Andrew Coward (G. Madec)	#1692	2016WP/Simplif2-CNRS-simona	done	to be continued in 2017
SIMPLIF-3	Remove key_bdy macro		CMCC	Tomas Lovato	D. Storkey	#1729	2016WP/SIMPLIF-3_BDY	Completed	Ready
SIMPLIF-4	Remove key_mpp_rep		CMCC	Dorotea Iovino	G. Madec	#1730	2016WP/SIMPLIF-4_MPPREP	Completed	Ready
SIMPLIF-5	Reimplement Smagorinsky param.		NERC	Andrew Coward	Gurvan	#1689	2016WP/SIMPLIF-5_ACC	Completed	Ready
Wave coupling
WAVE-1	Improvements in wave-current interaction processes implementation		INGV	Emanuela Clementi	Rachid Benshila
WAVE-2	Definition of wave-current interaction processes at small (coastal) scale		INGV	Emanuela Clementi	Rachid Benshila
WAVE-3	Modification of coupling code to allow coupling to a wave model		Met Office	Chris Harris / Juan Castillo
NEMO robustness
ROBUST-1	Integration of the seabass configuration as a test case		CNRS	Pierre-Antoine Bouttier					postponed
ROBUST-2	Improving EEN scheme for partial steps		Met Office	Mike Bell
ROBUST-3	Academic test case in the system		CNRS	Simona Flavoni	G. Madec	#1692	2016WP/Simplif2-CNRS-simona	Completed	Ready
ROBUST-4	Passive tracers run offline with variable volume		CNRS	Christian Ethé					completed
ROBUST-5	Revisiting TOP interface		CNRS/CMCC	Christian Ethé / Tomas Lovato	O. Aumont	#1782 #1783	2016WP/ROBUST-5_CMCC	completed completed	Ready
ROBUST-6	Continuous integration tool ('Trusting')		CNRS	Nicolas Martin	Miguel Castrillo				to be continued in 2017
ROBUST-7	BDY for nested limited area models		CMCC	Stefania Ciliberti
ROBUST-8	Improve split-explicit free surface		Mercator Océan	Jérôme Chanut
ROBUST-9	test on ORCA025/ORCA12		Mercator Océan	Clement Bricaud / Romain Bourdalle-Badie
ROBUST-10	Evolution of the Collaborative Development Environment (CDE)		CNRS / Mercator Océan	Nicolas Martin / Mathieu Peltier	NEMO Officers	#1679	2016WP/ROBUST-10_MARTIN		to be continued in 2017
ROBUST-11	Finalization of TOP on-line coarsening (v3.6)		MERCATOR Ocean
ROBUST-12	Reference manual update for v3.6		NERC	Andrew Coward
ROBUST-13	system support and verification work		NERC	Andrew Coward					Ongoing

GMD Special Issue

Current action wiki pages:

• CONFIGMAN-1_PAUL
• AGRIF-2_Rousset-Levy
• CMCC_2016
• CNRS_2016
• HPC-
  • HPC-1_SilviaMocavero
  • HPC-4_SilviaMocavero
• INGV_2016
• MERCATOR_2016
• METO-5_MATHIOT
• Met_Office_2016
• NOC_2016
• NocWad
• ROBUST-
  • ROBUST-10_MARTIN
  • ROBUST-5_CMCC
• SIMPLIF-
  • SIMPLIF-3_BDY
  • SIMPLIF-4_MPPREP
  • SIMPLIF-5_ACC
• Simplif2-CNRS-simona
• WAVE-3_JuanCastillo
• WAVE1-INGV
  • WAVE1-INGV
  • WAVE1-INGV/Summary
• validation_2016

---

AGRIF

AGRIF-1 / Met Office - Increased vertical resolution with AGRIF

Motivation: Vertical grid refinement in NEMO would be a useful tool in simulating some aspects of the ocean (e.g. overflows)
Status: Started in 2015 but much more work to do
Main Tasks:
Science Pre-viewer:
System Pre-viewer :
Depends on: none
Principal Investigator : Tim Graham

AGRIF-2 / CNRS - Assessment of LIM3 with AGRIF

Motivation: enable the use of AGRIF with LIM3 since LIM3 is the reference sea ice model in NEMO and LIM2 will soon be removed
Status: Not yet started in 2015
Main Tasks: AGRIF already works with LIM2, so the strategy here will be to adapt what is done in LIM2 to LIM3.
Science Pre-viewer : Rachid Benshila & Jérôme Chanut
System Pre-viewer : Rachid Benshila & Jérôme Chanut
Depends on: none
Principal Investigator : Clément Rousset

AGRIF-3 / Mercator Océan - Agrif + vvl (two way nesting)

Motivation: Enable the use of agrif with temporally varying vertical grid (e.g. with zstar or ztilde coordinates)
Status: Started in 2015. One way nesting is ok, two way nesting needs to be finalized.
Main Tasks:
Science Pre-viewer :
System Pre-viewer :
Priority: High
Depends on: none
Principal Investigator : Jérôme Chanut

---

HPC

HPC-1 / CMCC/Met Office - Suppress global communications

Motivation: Removing global communications could help improve the speed of NEMO
Status: Not started
Main Tasks:
- code analysis to list all mpp_sum, mpp_max, mpp_min in the code, except those used in the initialisation phase and those used in the solver routines (that will disappear). Silvia Mocavero to investigate which communications could be safely removed. Tim Graham to look at a more efficient implementation of functionality in stp_ctl
- discussion with NEMO_st to see what can be done to suppress the identified global communications
- implementation of the solution.
Science Pre-viewer : Andrew Coward
System Pre-viewer : Andrew Coward
Deadline: June 2016
Depends on: none
Principal Investigator : Silvia Mocavero/Tim? Graham

HPC-2 / Barcelona - MERCATOR - Gather communications

Motivation: Grouping communications (lbc_lnk) together is more efficient than several separate lbc_lnk calls.
Status: lbc_lnk_multi in 3.6
Main Tasks: Extend functionality of lbc_lnk_multi to 3D (or 4D variables). Find calls to lbc_lnk that can be replaced with lbc_lnk_multi.
Science Pre-viewer :
System Pre-viewer :
Deadline:
Priority:
Depends on:
Principal Investigator : Miguel Castrillo, Clement Bricaud

HPC-3 / Met Office - Suppress useless communications

Motivation: Suppress unnecessary halo updates (calls to lbc_lnk) as these are expensive and are a barrier to increased parallelisation of NEMO.
Status:
Main Tasks:
- Use a script to search for lbc_lnk calls in the model code.
- Combine with SETTE testing to see if they can be safely removed
- Discussions with ST to determine whether communications used for diagnostic purposes can be suppressed. As described in the HPC working group document above this would mean that haloes could no longer be output in NEMO output files.
Science Pre-viewer :
System Pre-viewer :
Deadline: October 2016
Priority: High
Depends on:
Principal Investigator : Tim Graham

HPC-4 / CMCC - Scalability with MPI-OPENMP

Motivation: Improving NEMO scalability.
Status: continuation of 2015 dev CMCC-1
Main Tasks:
- the activity started at the end of 2013 with the analysis of three OpenMP approaches (implemented using “mini-apps”) on several multicore architectures; the second step was the implementation of the hybrid version of the GYRE configuration using the best OpenMP approach. Some improvements to the implementation have been performed by Intel to match Intel architectures. During 2016, the extension of the hybrid implementation to the entire code is planned
- analysis of scalability improvement using MPI3 new communications (e.g. collective neighbours communications), instead of point to point communications
Science Pre-viewer : Tim Graham
System Pre-viewer : Tim Graham
Deadline: December 2016
Priority: HIGH
Depends on: results of the same action in 2015
Principal Investigator : Silvia Mocavero

HPC-5 / NERC - Implement larger haloes

Motivation: Improving NEMO scalability.
Status: New implementation - old idea
Main Tasks: Investigate the benefits of using larger halo to reduce the communication frequency and hence improve performance and scalability. This is likely to be most influential in the barotropic time-splitting where it should be possible to emulate earlier solutions for the iterative solvers. Extension to the rest of the code will be considered subject to an impact assessment.
Science Pre-viewer :
System Pre-viewer :
Depends on: none
Principal Investigator : Andrew Coward

---

SIMPLIFICATION

SIMPLIF-1 / CNRS - Completion of Simplification for ADV, LDF, time-splitting + ZDF simplification

Motivation: Complete 2015 simplication work on ADV, LDF and split-explicite free surface. Introduce a vertical physics manager that allows to save MPP communications. Suppress all key_zdf… CPP keys.
Status: Already started
Main Tasks:
Science Pre-viewer :
System Pre-viewer :
Deadline:
Priority: High
Depends on:
Principal Investigator : Gurvan Madec

SIMPLIF-2 / CNRS - Re-writing of interface between model and configuration; remove all hard-coded

Motivation: Remove all hard coded reference to configurations. we want that : a configuration will be defined by reading external files (coordinates, bathymetry and mesh_mask, initial state (not analytical), input and forcing files, open boundary conditions)
Status: New implementation / the idea of the work is already started inside the Working group Robustness and Test cases.
Main Tasks:

• remove all hard coded configuration (if orca....)
  
• all files defining the configuration are read (put flag in namelist: if read read file, if not call user_module)
  
• implement GYRE like the ONLY standard example of configuration that does not read files
  
• create the "user_defined_module.F90" in NEMO code (users_defined_sbc, users_defined_forcing, users_defined_bdy, users_defined_bathymetry, ...)
  Science Pre-viewer: Andrew Coward
  System Pre-viewer: Andrew Coward
  Deadline:
  Priority: High
  Depends on:
  Principal Investigator : Simona Flavoni
  

SIMPLIF-3 / CMCC - Remove key_bdy macro

Motivation: reduce the use of macros in NEMO
Status : Completed
Main tasks : Remove the macro activating the code for the open boundary treatment in favour of static code always present in compilation and activated only when bdy are required by the user configuration
Science Pre-viewer : D. Storkey
System Pre-viewer : D. Storkey
Deadline: 31-08-2016
Priority: high
Depends on: none
Principal Investigator : Tomas Lovato

SIMPLIF-4 / CMCC - Remove key_mpp_rep

Motivation: Set the use of MPI safe computation as a default
Status : completed
Main tasks : remove the use of the macro key_mpp_rep and use as a default condition the MPI safe communications
Science Pre-viewer : Gurvan Madec
System Pre-viewer : Gurvan Madec
Deadline: 31-08-2016
Priority: high
Depends on: none
Principal Investigator : Dorotea Iovino

SIMPLI-5 / NOC - Reimplement Smagorinsky

Motivation: The rationalisation of the LDF operators offers the possibility of​cleanly reintroducing the Smagorinsky parameterisation by adding an appropriate subroutine to set the three-dimensional coefficient array that already exists. This should represent an additional improvement over the previous implementation in that it will work with both harmonic and biharmonic operators.
Status :
Main tasks :
Science Reviewer:
System Reviewer:
Deadline:
Priority:
Depends on:
Principal Investigator : Andrew Coward

SIMPLI-6 / CNRS - suppression of LIM-2

Motivation: LIM-3 used with one category gives results similar to LIM-2. Therefore LIM-2 is useless.
Status :
Main tasks : remove LIM_SRC_2 directory together with changes in SBC and namelists
Science Reviewer:
System Reviewer:
Deadline:
Priority:
Depends on:
Principal Investigator : Clément Rousset

---

Configuration Manager

ConfigMan-1 / MERCATOR - SIREN improvement and robustness

Motivation:

• test SIREN code (working group members and maybe some external users)
  
• extract from NEMO the meshmask creation (Mercator-Océan)
  
• main program (python) to manage all SIREN codes (Mercator-Océan)
  
• improve documentation readibility, and add tutorial (Mercator-Océan)
  
  Status:
  Main Tasks:
  Science Pre-viewer:
  System Pre-viewer:
  Deadline:
  Priority:
  Depends on:
  Principal Investigator : julien PAUL
  

ConfigMan-2 / NERC/CMCC - BDY tool developpement and tests

Motivation:

• finish last improvement of the BDY tool and add some documentation (NERC)
  
• test BDY tool (CMCC)
  
  Status:
  Main Tasks:
  Science Pre-viewer:
  System Pre-viewer:
  Deadline:
  Priority:
  Depends on:
  Principal Investigator : james HARLE, stefania CILIBERTI
  

ConfigMan-3 / MERCATOR - publicise SIREN and get feedbacks from user

Motivation:

• publicise SIREN to NEMO user for test
  
• get feedback from user
  Status:
  Main Tasks:
  Science Pre-viewer:
  System Pre-viewer:
  Deadline:
  Priority:
  Depends on:
  Principal Investigator : julien PAUL
  

---

Wave Coupling

WAVE-1 / INGV - Improvements in wave-current interaction processes implementation

Motivation: INGV is responsible for the WAVE-WG and will continue improving the wave-current interaction processes implementation according to the WG needs (see Wave-coupling WG wiki page https://forge.ipsl.jussieu.fr/nemo/wiki/WorkingGroups/Wave_Coupling )
Status : Implementation of some of the identified processes has been started in 2014 and 2015 within the Wave coupling WG:

1. New Vertical Stokes Drift computation according to Breivik et al., 2014: “Approximate Stokes Drift Profiles in Deep Water”
2. Vertical Turbulence: implement the Qiao (2010) formulation (works with all the vertical closure schemes)
3. Modification of the surface vertical velocity accounting for the Stokes Drift
4. Computation of the Stokes-Coriolis Force
5. Inclusion of the Stokes drift components in the tracer advection term
6. Generalization of the surface boundary condition for momentum accounting for the wave effects
   This work is included in the /2015/dev_r5936_INGV1_WAVE development branch
   Main tasks :
   • Finalize the review and testing phase of /2015/dev_r5936_INGV1_WAVE by January 2016
   • Merge the development branch into the trunk by January 2016
   • Continue tests on the wave-current processes implemented
   • Continue implementation of already defined wave-current processes:
   o Vertical mixing enhancement due to wave-current interaction;
   o Contribute to the discussion on development of Langmuir circulation;
   o others if agreed by the WAVE-WG.
   

Meeting organization with the WAVE-WG to discuss further issues to be investigated and implemented
Science Pre-viewer : Nadia Pianrdi
System Pre-viewer : Rachid Benshila
Deadline:
Priority: high
Depends on:
Principal Investigator: Emanuela Clementi (emanuela.clementi@…)

WAVE-2 / INGV - Definition of wave-current interaction processes at small (coastal) scale

Motivation: According to the WAVE-WG, in order to achieve a full wave-current coupling, the small (coastal) scale processes need to be investigated and integrated. This development is part of a second phase wave coupling development depending on the first one: INGV-1 dealing with processes acting at large to meso-scale.
Status : To be continued in 2016
Main tasks : Contribute, within the WAVE-WG, in the analysis of this issue in order to finalize the discussions started in 2014 before proceeding with any new implementation. In particular main tasks are: • sink of wave momentum due to breaking and wave-turbulence interaction • sink of wave momentum due to bottom friction • wave-induced mean pressure
Science Pre-viewer : Nadia Pinardi
System Pre-viewer : Rachid Benshila
Deadline:
Priority:
Depends on: WAVE-1
Principal Investigator: Emanuela Clementi (emanuela.clementi@…)

WAVE-3 / Met Office - Modification of coupling fields to allow coupling to a wave model

Motivation: Allow the use of a wave model coupled to NEMO
Status : To be continued in 2016
Main tasks : Add coupling fields so that fields required in Wave WG branch can be obtained from OASIS. Ensure ice fraction, currents etc. can be passed to OASIS for use by a wave model.
Science Pre-viewer :
System Pre-viewer :
Deadline:
Priority:
Depends on:
Principal Investigator: Chris Harris / Juan Castillo

---

ROBUSTNESS

ROBUSTNESS-1 / CNRS - Integration of the SEABASS configuration as a test case

Motivation: SEABASS is the reference configuration for Data Assimilation, included in the NEMO v3.4_STABLE version. Various data assimilation experiments have been done with this configuration, with various data assimilation systems (e.g. Cosme et al, 2011, Bouttier et al. 2014, Yin et al., 2014). In this context, this configuration appears to be useful for data assimilation users, to couple their own DA system on NEMO and compare their results with thgose obtained on this configuration. SEABASS is also easy to take in hand. Also, it allows to update the configuration status to the future version of NEMO. For these reasons, this configuration is a relevant test case for Data Assimilation.
Status:
Main Tasks:
Science Pre-viewer :
System Pre-viewer : Simona Flavoni
Deadline:
Priority:
Depends on: SIMPLIF-2/CNRS
Principal Investigator: Pierre-Antoine Bouttier

ROBUSTNESS-2 / Met Office - Improvements to EEN scheme with partial steps

Motivation: Following investigative work by Nicolas Ducousso it became clear that the EEN scheme in NEMO did not perform as expected in idealised test cases. Although a fix was implemented that improved the performance in idealised test cases the performance in realistic simulations (e.g. ORCA025) is worse. It is not clear that the new or old formulation is correct for the case of sloping bathymetry and partial steps.
Status:
Main Tasks:
Science Pre-viewer :
System Pre-viewer :
Deadline:
Priority:
Depends on:
Principal Investigator : Mike Bell

ROBUSTNESS-3 / CNRS - Academic test cases in the system

Motivation: Implementation of standard test-cases for NEMO (e.g. for pedagogical purpose and/or for demonstrating the benefit of new features and/or for illustrating the effect of a numerical scheme)
Status: started in 2015
Main Tasks: after the structure of user_defined module is created in the code (see SIMPLIF-2 CNRS), a list of test cases will be implemented ( suggestion one test case related to the main development of the year for each institution).
The working group on Test cases and robustness will decide the structure fo the implementation in NEMO of test cases (work already started, with a template of equatorial box in 2015 branch).
Science Pre-viewer : Gurvan Madec
System Pre-viewer : Andrew Coward
Deadline:
Priority: High
Depends on: SIMPLIF-2 (CNRS)
Principal Investigator: Simona Flavoni

ROBUSTNESS-4 / CNRS - Passive tracers run offline with vvl

Motivation: Add missing pieces of code to be able to run offline component with vvl
Status: Started in 2015 ; to be improved
Main Tasks:
(1) run a forced simulation ORCA2(1)-LIM2(3) and output variables needed for linear free surface, especially the changing vertical grid in time ( already done )
(2) Rewrite the Offline module to take into account the changing grid in time
Science Pre-viewer : Gurvan Madec
System Pre-viewer :
Deadline:
Priority: High
Depends on:
Principal Investigator: Christian Ethé

ROBUSTNESS-5 / CNRS/CMCC - Revisiting TOP interface

Motivation: Some aspects of TOP interface need to be improved
Status:
Main Tasks:
(1) move the number of passive tracers from the code to the namelist
(2) Revisit the SMS models distributed in the model ( AGE tracer, Natural C14 vs Bomb C14, etc ...)
(3) generalisation of the work done at CMCC on boundary conditions to others models in the system ( PISCES, CFC, ... )
Science Pre-viewer : Olivier Aumont
System Pre-viewer : Olivier Aumont
Deadline:
Priority: Low
Depends on: SIMPLIF-3 (CMCC)
Principal Investigator: Christian Ethé, Tomas Lovato

ROBUSTNESS-6 / CNRS - Continuous integration tool ('Trusting')

Motivation: Carry on the use, the support and the spreading of this new tool for the validation of development works
Status:
Main Tasks:
- Follow-up the status of the trusting for supported configurations & HPC centers

• Finalize documentation (help content, wiki page, ...)
  
• Complete the list of monitored configurations & add new features for improvement
  
• If needed,install the trusting on new HPCC for benchmarking the code over several centers
  Science Pre-viewer:
  System Pre-viewer: Miguel Castrillo
  Deadline:
  Priority: Medium
  Depends on:
  Principal Investigator: Nicolas Martin
  

ROBUSTNESS-7 / CMCC - BDY for nested limited area models

Motivation: Improving nesting techniques for regional and sub-regional circulation models nested into coarser models
Status :
Main tasks : 1. Implementation of the generalised Flather’s condition for the barotropic component (Oddo & Pinardi, 2008); 2. Interpolation Constraint applied to total velocity field for preserving the transport conservation across open boundaries
Science Reviewer: Nadia Pinardi (University of Bologna & CMCC)
System Reviewer: James Harle
Deadline:
Priority:
Depends on:
Principal Investigator : Stefania Ciliberti (stefania.ciliberti@…)

ROBUSTNESS-8 / Mercator Océan - Improve split-explicit free surface

Motivation: There are several aspects that need to be investigated concerning the robustness of current split-explicit algorithm:

• Tracer conservation issues (all time splitting options do not ensure global and local tracer conservation).
  
• Missing correction terms in the barotropic equations relative to internal pressure gradients. This would reduce mode splitting error, hence improve stability.
  
• Work on the stability of barotropic time stepping (based on INRIA's work) to possibly remove time filtering of barotropic variables. This would limit the temporal dissipation and greatly ease online coupling of nested domains at barotropic level (with AGRIF).
  Status:
  Main Tasks:
  Science Pre-viewer:
  System Pre-viewer:
  Deadline:
  Priority:
  Depends on:
  Principal Investigator: Jérôme Chanut
  

ROBUST-9 / MERCATOR - tests NEMO3.6 with global configuration (1/4° & 1/12°)

Motivation: Model configurations need to be validated before the release of the model.
Status: ORCA025_LIM2 with filtread free surface or time splitting is already running at Mercator
Main Tasks: Test and validation with ORCA025 of:
-no routines to be modified
-LIM2 vs LIM3
-GLS vs TKE
-time-splitting vs filtred free surface
-vector form vs UBS for momentum advection
-run ORCA025 with Z*
-online coarsening
-run ORCA12 with time-splitting/LIM2/GLS/UBS?
-online coarsening
Science Reviewer: Martin Vancoppenolle <martin.vancoppenolle@…>,"Andrew C. Coward" <acc@…>,Gurvan Madec <Gurvan.Madec@…>
System Reviewer: N/A
Deadline:
Priority: medium
Depends on: implementation of online coarsening
Principal Investigator : Clement Bricaud <cbricaud@…>,Romain Bourdallé-Badie <rbourdal@…>, Jerome Chanut <jchanut@…>

ROBUSTNESS-10 / CNRS - Evolution of the Collaborative Development Environment (CDE)

Motivation: in anticipation of the end of life of web server hosting the NEMO website (planned for Q1 2017), overall review on different components (Website, Forge & Mailing lists) in order to:

• improve its availability & security
• remove most of existing lacks and facilitate some ST works
• make a compromise between groups with specific needs and tools aggregation & integration Status: in progress
  Main Tasks:
  • New repository for users with some adjustments for NEMO ST operations
  • Website reduced to its public area
  • New public repository for users
  • NEMO officers granted as Forge & '[Nemo]' mailing list administrators
  • Trac becomes the only management portal

• New website or new full CDE if NEMO ST not satisfied with this new architecture Science Pre-viewer:
  System Pre-viewer: NEMO officers (Dorotea Iovino, Emanuela Clementi, Andrew Coward, Clément Bricaud, Tim Graham & Simona Flavoni)
  Deadline: Q1 2016 for 1st phase, Q3 2016 for 2nd phase
  Priority: High
  Depends on: the involvement of all ST members for contributing in one way or another (technical support, page content creation or updating, ...)
  Principal Investigator: Nicolas Martin
  

ROBUST-11 / MERCATOR - TOP online coarsening

Motivation: run online top/pisces with lower resolution than physics
Status : developped on NEMO_3.6 / run with ORCA025
Main tasks :
-new crs routines will be added
-change trctrp.F90,trcstp.F90, mppini.
-finish test of implementation with age tracer
-implementation in PISCES
-test with PISCES
Science Reviewer: Gurvan Madec <gm@…>
System Reviewer: Gurvan Madec <gm@…>
Deadline: april 2015
Priority: high
Depends on:
Principal Investigator : Clement Bricaud <cbricaud@…>,Christian Ethé <Christian.Ethe@…>, Coralie Perruche <cperruche@…>

ROBUST-12 / NERC - Reference manual update for v3.6 stable

Motivation: With the main focus for the system team on future releases there is the danger of the reference manual for v3.6 stable falling into disrepair. With most CMIP6 work relying on this​version there is a critical need (practical needs and reputation) to ensure that the manual is as accurate and useful as possible. NOC proposes to coordinate this action by reviewing and cross-checking documentation with v3.6 stable code, editing where necessary and collaborating with code authors on updating sections found wanting.
Status :
Main tasks :
Science Reviewer:
System Reviewer:
Deadline:
Priority:
Depends on:
Principal Investigator : Andrew Coward

ROBUST-13 / NERC - System support and verification work

Motivation: The need for simplification work carried out in preparation for next generation computer architecture work has meant wholesale streamlining and reorganising of the code. More in-depth testing of features key at medium to high resolutions is required to​confirm that code integrity has been maintained. Testing will need to be performed at the global scale (at least ORCA025) and will include verification of: 1. Full ice embedding options (LIM3 and CICE, subject to resources) 2. Robustness of the Z-tilde coordinate 3. Appropriate use of the ICB module. NOC expects to take an active role in this process and reserves a substantial block of its annual contribution to ensure it can respond accordingly to the consortium needs. This block also covers routine system team work to respond to user initiated tasks (bug-fixes, requests for assistance, documentation etc.).
Status :
Main tasks :
Science Reviewer:
System Reviewer:
Deadline:
Priority:
Depends on:
Principal Investigator : Andrew Coward