Mercator-NEMO team - 2013 actions

Last edited Timestamp?

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members

Name	Institution	%	Position
Clément Bricaud	Mercator Océan, Toulouse	20%	Mercator NEMO officer
Guillaume Reffray	Mercator Océan, Toulouse	20%	Mercator developper
Jerome Chanut	Mercator Océan, Toulouse	20%	Mercator developper
Julien Paul	Mercator Océan, Toulouse	20%	Mercator developper
Romain Bourdalle-Badie	Mercator Océan, Toulouse	20%	Mercator developper
Mondher Chekki	Mercator Océan, Toulouse	0%	Mercator Consortium expert
Yann Drillet	Mercator Océan, Toulouse	0%	Mercator Consortium expert

total weeks :
40 wk (1 man/year)

Summary:

Action	nb weeks	Brief description	Status	Branch name	Trac ticket n°	Wiki page name	Reviewer(s)	Review status	Ready for merge. If "NO", reason and status for 2014
Mercator-1	6	resolving the 2 versions of time-stepping	will be OK for merge 2013	dev_r3867_MERCATOR1_DYN	1079				YES
Mercator-2	2	exploration of implicit bottom friction	included in Mercator-1	1079					YES
Mercator-3	2	Solar flux filtering at daily frequency to force biogeochemistry model	will be OK for merge 2013	dev_r3856_MERCATOR3_QSRMEAN24H	1076				YES
Mercator-4	3	Implementation a configuration manager	a first version will be provided for merge 2013						to be finished in 2014 ; need more time to add new functionnalities and remove some bugs
Mercator-5	3	Add a 1D reference configuration on PAPA station	will be OK for merge 2013	dev_r4022_MERCATOR5_PAPA1D	1152				YES
Mercator-6	6	End of BDY-OBC merge	Will be OK for merge 2013	dev_r3987_METO1_MERCATOR6_OBC_BDY_merge	1090				YES
Mercator-7	2	implementation of OBC's schemes for PISCES	postponned 2014						waiting for CMCC.6 Surface and lateral boundary conditions for tracers
Mercator-8	3	Data assimilation interface: model equivalent of a SLA	postponned 2014						not started ; need some time to find a solution to filter HF in ssh ( done on 21 days in AVISO )

Major points of Mercator's contribution:

'''MERCATOR.1 — resolving the 2 versions of time-stepping'''

Motivation: Tracer conservation and time splitting. reference: Shchepetkin, A. F., and J. C. McWilliams? , 2005
Status : Running in NEATL36 at Mercator.
main tasks : Main idea:replace Leapfrog scheme by a Fb tamporal scheme, but keep actual method for updating ssh at 3D time-stepping.
workplan:
1. test some eventual problem of divergence of SSh in barotropic mode compared to SSH in 3d mode ( cf Hallberg and Adcroft, OM 2009: Reconciling estimates of the free surface height in Lagrangian vertical coordinate ocean models with mode-split time stepping).
2. implementation in NEMO_3.3 of this time-splitting.
3. test in high-resolution configuration at Mercator.
4. take a decision for reorganization of step for time-splitting.
Priority: High
Principal Investigator : Clement Bricaud & Jerome Chanut (jchanut@…)
Science Reviewer : Gurvan Madec --
System Reviewer : Gurvan Madec
Number of weeks : 4 (TBC)

MERCATOR.2 — exploration of implicit bottom friction

Motivation: Use NEMO standard implicit bottom friction in Mercator Regional configuration ( z-coord ).

Status :

main tasks :
Principal Investigator : Jerome Chanut (jchanut@…)
Priority: high
Science Reviewer :
System Reviewer :
Number of weeks : 2 (TBC)

'''MERCATOR.3 — Solar flux filtering at daily frequency to force biogeochemistry model. '''

Motivation: For coupled model ( physic + bio ): physic needs 24 hours (+ diurnal cycle) or 3 hours solar fluxes, but bio need a 24 hours mean.
Status : End of 2012 task
main tasks :
Principal Investigator : Clement Bricaud (cbricaud@…)
Priority: high
Science Reviewer : Gurvan Madec --
System Reviewer : Gurvan Madec
Number of weeks : 2 (TBC)

'''MERCATOR.4 — Implementation of a configuration manager '''

Motivation: Add a configuration manager
Status :
main tasks :
a first version is implemented:
built a coordinate file from ORCA 1/4 to higher resolution: OK
built a bahtymetry from a ORCA025 bathymetriy on higher resolution and extract it on the domain: OK
Merge mother and child bahtymetry: to be debugued.
Create boundaries files: to be debugued.
Create Initial conditions from restat/model output/climatology files: OK

Principal Investigator : Julien Paul (jpaul@…)
Priority: high
Science Reviewer : --
System Reviewer :
Number of weeks : 2 (TBC)

'''MERCATOR.5 — Add a 1D reference configuration on PAPA station '''

Motivation: Vertical physics and numerics studying
Status :
main tasks :

Principal Investigator : Romain Bourdalle-Badie, Guillaume Reffray (greffray@…, rbourdal@…)
Priority: high
Science Reviewer : Marcello Vichi --
System Reviewer : Marcello Vichi
Number of weeks : 2 (TBC)

'''MERCATOR.6 — End of OBC-BDY merge, with UK Metoffice '''

Motivation: .
Status :
main tasks :
Principal Investigator : Jerome Chanut (jchanut@…)& Guillaume Reffray (greffray@…)
Priority: high
Number of weeks : 2 (TBC)

'''MERCATOR.7 — implementation of OBC's schemes for PISCES '''

Motivation: Use new package ; implement new methods.
Status :
main tasks :
Principal Investigator : Guillaume Reffray (greffray@…)
Priority:
Science Reviewer : --
System Reviewer :
Number of weeks : 2 (TBC)

'''MERCATOR.8 — Data assimilation interface: model equivalent of a SLA '''

Motivation:
Status :
main tasks : make the same treatment as done in AVISO
Principal Investigator : Elisabeth Remy (eremy@…)
Priority:
Science Reviewer : --
System Reviewer :
Number of weeks : 2 (TBC)

aditionnal work:

Agrif has been tested by Jerome: running with filtred SSH, with new time-splitting, with several levels of AGRIF zooms.
XIOS tested on high resolution global configuration ( ORCA12, ORCA025)

Major points:
Generalized forward-backward time-splitting implemented A first release of configuration manager is implemented A 1D-PAPA station configuration is available, for vertical physic study.