CNRS-NEMO team - 2013 actions

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members

Name	Institution	%	Position

total weeks :
>= 40 weeks (=1 man-year)

Summary:

Action	Brief description	Status	Branch name	Trac ticket n°	Wiki page name	Reviewer(s)	Review status	Nb of weeks	Ready for merge
CNRS-1

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CNRS-1 - Coupled interface (continuation)

Motivation: OASIS-MCT interface: MPP version of OASIS coupler.
Status : used in PULSATION project
Main tasks : return back in the system all required NEMO changes
Science Reviewer:
System Reviewer:
Deadline:
Priority:
Depends on:
Principal Investigator : Sebastien Masson (smasson@…)

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CNRS-2 - IOSERVER (continuation)

Motivation: evolution of the new IOM introduced in 2012.
Status :
Main tasks : integrate, debug and benchmark the new version
Science Reviewer:
System Reviewer:
Deadline:
Priority:
Depends on: work done on new IOserver at IPSL
Principal Investigator : Sebastien Masson (smasson@…)

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CNRS-3 - Energy diagnostics (end)

Motivation: output 3D trends of tracers, momentum, kinetic energy and potential energy.
Status : almost done (see dev_r3309_LOCEAN12_Ediag ) Finalisation in 2013.
Main tasks :
(1) implement the 3D output of tracers and momentum trends (done with validation in 2012)
(2) compute and output the 3D trends of PE and KE : vvl case to be validated
(3) documentation
Science Reviewer: NOCS guy?
System Reviewer: NOCS guy?
Deadline:
Priority:
Depends on: gurvan and Fabien disponibilities
Principal Investigator : Gurvan Madec and Fabien Roquet (gm@…)

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CNRS -4 - On-line coarsening of TOP (2 years action)

Motivation: introduce a coarsening of the model resolution on the biogeochemical model (TOP) (Lévy et al. Ocean Modelling, 2012)
Status : Part of the EMBRACE FP7 project. Work started in may 2012. The project duration is 2 years, with 2 deliverables in NEMO: 1st year (2013) : on-line coarsening of the ocean outputs ; 2nd year (2014) : on-line coarsening of TOP
Main tasks :
(1) on-line coarsening of the ocean outputs with a factor of 2 or 3, interfaced with IOM only.
Science Reviewer:
System Reviewer:
Deadline:
Priority:
Depends on: -
Principal Investigator : Gurvan Madec (gm@…)

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CNRS -3 - reference manuels (continuation)

Motivation: paper documentation, a never-ending story
Status :
Main tasks :
(1) Create the TOP documentation (TRP + interface to bio-model) using Latex (similar to the NEMO ocean engine documentation)
(2) review of the written documentation (NOCS team)
Science Reviewer:
System Reviewer:
Deadline:
Priority:
Depends on: -
Principal Investigator : Christian Ethé (Christian.Ethe@…)

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CNRS .5 - Internal evolution of the ocean dynamics

Motivation: improvement of some aspect of the ocean dynamics
Status : conception done
Main tasks :
(1) implicit bottom friction: change the order of call : dynspg 1st, then dynzdf
(2) momentum advection (all dynadv modules, dynspg_ts) : ensure the consistency between non-linear free surface (vvl) and vector invariant / flux form for non linear terms of the momentum equation
(3) horizontal pressure gradient in density anomalie and its impact on dynspg_ts (Marsaleix et al 2008) (all dynspg modules in particular dynspg_ts, dynhpg)
NB: - grouped in one task as they involved common modules
- need not only test cases but also realistic one: ORCA12 with vvl (NOCS).
Science Reviewer: G. Nurser (?)
System Reviewer: NOCS (?)
Deadline:
Priority:
Depends on: -
Principal Investigator : Gurvan Madec (gm@…)

Item on LIM3 to be described

item Evolution of configuration setting (Namelist) to be described

Pending issues 

1 - new vertical coordinate 

Motivation: introduce an arbitrary lagrangian eulerian coordinate to reduce spurious diapycnal mixing due to high frequency vertical variations
Status : done in a phd thesis, see Leclair 2010
Main tasks : update for the new NEMO version 
Depends on: an unknown man power

2 - Compact vertical advection scheme

Motivation: Compact schemes have the particularity to be of high order but compact in space 
Status : Developed for NEMO version 3.1 (L. Debreu) 
Main tasks : 
(1) adaptation to current version
(2) validation and documentation 
Depends on: an unknown man power

3 - KPP scheme

Motivation: KPP (K profile parametrization is widely used in ocean models to compute vertical mixing coefficients. Current version implemented in NEMO is old and unmaintained, furthermore, KPP has been redesigned for ROMS model to improve the regularity of the solution (better numerics) 
Status : Implemented in ROMS (UCLA) by F. Lemarié et al. (Ocean Modeling in press)
Principal Investigator : an unknown man power  '

4 - Rotated bilaplacian
Motivation: Rotated biharmhonic diffusion operator. This we would be able to use it in the isopycnal direction, and this operator would also be particularly suitable for s-coordinate 
Status : Implemented in ROMS (UCLA) by F. Lemarié et al. (Ocean Modeling in press) 
Principal Investigator : an unknown man power