Changes between Version 1 and Version 2 of 2010WP/2010Action_institutions_LOCEAN_old


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Timestamp:
2010-07-05T12:27:25+02:00 (10 years ago)
Author:
clevy
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  • 2010WP/2010Action_institutions_LOCEAN_old

    v1 v2  
    11[[PageOutline]] 
    22 
    3 = '''LOCEAN-NEMO team - 2010 actions'' =   
    4  
    5  
     3= '''LOCEAN-NEMO team - 2010 actions''''''' = 
    64Last edited [[Timestamp]] 
    75 
    86'''members''' 
    9 || Name                         || Institution                                  ||  %   ||  Position      || 
    10 || Rachid Benshila        || LOCEAN-IPSL, Paris                 || 100  ||   CNRS          ||    
    11 || Laurent Debreu               || LJK, Grenoble                        || 10   ||   INRIA          || 
    12 || Christian Ethé               || IPSL, Paris                  || 50   ||   CNRS          ||  
    13 || Simona Flavoni         || LOCEAN-IPSL, Paris                 || 100     ||   CNRS-INSU 1 year contract       ||  
    14 || Claire Lévy                 || LOCEAN-IPSL, Paris            || 100  ||   NEMO project Manager               ||  
    15 || Brice Lemaire            || LOCEAN-IPSL                      || 100  ||   My_Ocean 2 years contract  (Arrived  in Sept. 2009)   ||  
    16 || Bénédicte Lemieux  || LEGI - Grenoble                        || 50   ||   CNRS 2 years contract      (Arrived in Oct. 2009) ||  
    17 || Sébastien Masson    || LOCEAN-IPSL, Paris                 || 50      ||   CNAP           ||  
    18 || Marie-Alice Foujols || IPSL, Paris                                  || 5     ||   CNRS          ||  
    19 || Marina Lévy          || LOCEAN-IPSL, Paris                 || 5      ||   CNRS          ||  
    20 || Gurvan Madec                 || LOCEAN-IPSL, Paris                 || 30     ||   NEMO Scientific Leader (CNRS) ||    
    217 
     8||Name||Institution||%||Position|| 
     9||Rachid Benshila||LOCEAN-IPSL, Paris||100||CNRS|| 
     10||Laurent Debreu||LJK, Grenoble||10||INRIA|| 
     11||Christian Ethé||IPSL, Paris||50||CNRS|| 
     12||Simona Flavoni||LOCEAN-IPSL, Paris||100||CNRS-INSU 9 months + IS-ENES 3 months contracts|| 
     13||Claire Lévy||LOCEAN-IPSL, Paris||100||NEMO project Manager|| 
     14||Matthieu Leclair||LOCEAN-IPSL, Paris||70||IS-ENES 9 months contract|| 
     15||Brice Lemaire||LOCEAN-IPSL, Paris||100||My_Ocean 2 years contract        (Arrived  in Sept. 2009)|| 
     16||Bénédicte Lemieux||LEGI - Grenoble||50||CNRS 2 years contract        (Arrived in Oct. 2009)|| 
     17||Sébastien Masson||LOCEAN-IPSL, Paris||50||CNAP|| 
     18||Marie-Alice Foujols||IPSL, Paris||5||CNRS|| 
     19||Marina Lévy||LOCEAN-IPSL, Paris||5||CNRS|| 
     20||Gurvan Madec||LOCEAN-IPSL, Paris||30||NEMO Scientific Leader (CNRS)|| 
    2221 
    23 [[BR]] 
    24  
    25 '''total weeks : '''[[BR]] 
    26 30 + 50 + 26 + 22 + 15 + 6 + 24 + 6 + 16 + 25 + 20 = 229 wk 
     22'''total weeks : '''[[BR]] 30 + 50 + 26 + 22 + 15 + 6 + 24 + 6 + 16 + 25 + 20 = 229 wk 
    2723 
    2824---- 
    29 [[BR]] 
     25=== '''LOCEAN.1 — resolving the 2 versions of time-stepping''' === 
     26  '''Motivation:''' The NEMO former time stepping did not conserve the tracer when vvl were used (i.e. non linear free surface). Two time-stepping strategies have been implemented, one in Paris and one in Toulouse. The former is described in  Leclair and Madec (OM 2009), the latter is based on Shchepetkin and McWilliams (OM 2005) work. The objective here is to intercompare the two solutions and either chose the best or improve the co-existence of the two time stepping (more readability and reduce the number of modules)  [[BR]] '''Status :''' Paris time stepping already in the trunk (v3.2), Toulouse' one will be committed early 2010 (cf C.4, v3.3) [[BR]] '''main tasks :'''  (30 wk) [[BR]] (1)  intercomparison of the 2 time stepping strategies in ORCA and facade configurations (12wk) [[BR]] (2)  either chose one time stepping strategy or improve the co-existence of the two (12wk) (v3.4) [[BR]] '''Principal Investigator :''' Rachid Benshila (rachid.benshila@locean-ipsl.upmc.fr) [[BR]] 
    3027 
    31 === '''LOCEAN.1 — resolving the 2 versions of time-stepping''' === 
    32          '''Motivation:''' The NEMO former time stepping did not conserve the tracer when vvl were used (i.e. non linear free surface). Two time-stepping strategies have been implemented, one in Paris and one in Toulouse. The former is described in  Leclair and Madec (OM 2009), the latter is based on Shchepetkin and McWilliams (OM 2005) work. The objective here is to intercompare the two solutions and either chose the best or improve the co-existence of the two time stepping (more readability and reduce the number of modules)  [[BR]] 
    33          '''Status :''' Paris time stepping already in the trunk (v3.2), Toulouse' one will be committed early 2010 (cf C.4, v3.3) [[BR]] 
    34          '''main tasks :'''  (30 wk) [[BR]] 
    35          (1)  intercomparison of the 2 time stepping strategies in ORCA and facade configurations (12wk) [[BR]] 
    36          (2)  either chose one time stepping strategy or improve the co-existence of the two (12wk) (v3.4) [[BR]] 
    37          '''Principal Investigator :''' Rachid Benshila (rachid.benshila@locean-ipsl.upmc.fr) [[BR]] 
     28=== '''LOCEAN.2 — Configuration manager''' === 
     29  '''Motivation:''' Create the configuration tools (CFG-tools):  user-friendly interface, the tools, and the documentation associated to the creation of a new model configuration, and especially configurations defined as a zoom of an ORCA configuration. The tools include the generation of a grid, a bathymetry, an initial state, a forcing data set, and open boundary conditions.  '''Status :''' Start in August 2009, within My_Ocean (Brice Lemaire position). Work done in collaboration with IFREMER. [[BR]] '''main tasks :''' (50wk) [[BR]] (1)  revisit the grid generation of the AGRIF tools (6 wk) (v3.3) [[BR]] (2)  create a automatic OBC data generation (20 wk) (v3.4) [[BR]] (3)  Hand changes of the bathymetry through the Java interface developed at IFREMER (16 wk) (v3.4) [[BR]] (4)  First full version of the configuration manager  (8 wk) (v3.5) [[BR]] '''Principal Investigator :''' Rachid Benshila (rachid.benshila@locean-ipsl.upmc.fr) [[BR]] 
    3830 
     31=== '''LOCEAN.3 — MPP evolution''' (continuation) === 
     32  '''Motivation:'''  Improve the mpp behaviour of NEMO by playing with width of the overlap area, the number of communication, the dynamical allocation and the suppression of the solvers. [[BR]] '''Status :''' the mpp library has been rewritten in 2009 [[BR]] '''main tasks :'''   (26wk) [[BR]] (1)  Implementation of the mpp_sum giving the same results in single and multi-proc. runs developed at DFO (2 wk) (v3.3) [[BR]]  (2) introduce and test a 2 points overlap area ( 6 wk) (v3.4) [[BR]]  (3) minimize the number of communication in the baroclinic loop (regroup and suppress useless one) (6 wk) (v3.4) [[BR]] (4) introduce dynamical allocation as developed by Andrew Porter (6 wk) (v3.4)  [[BR]] (5) try to merge the filtered and time splitting free surface in order to suppress the solvers and increase the model scalability (flt and rs options) (6 wk) (v3.4) [[BR]] '''Principal Investigator :''' Rachid Benshila (rachid.benshila@locean-ipsl.upmc.fr) [[BR]] 
    3933 
    40 [[BR]] 
    41 === '''LOCEAN.2 — Configuration manager'''   ===   
    42    '''Motivation:''' Create the configuration tools (CFG-tools):  user-friendly interface, the tools, and the documentation associated to the creation of a new model configuration, and especially configurations defined as a zoom of an ORCA configuration. The tools include the generation of a grid, a bathymetry, an initial state, a forcing data set, and open boundary conditions.  
    43    '''Status :''' Start in August 2009, within My_Ocean (Brice Lemaire position). Work done in collaboration with IFREMER. [[BR]] 
    44    '''main tasks :''' (50wk) [[BR]] 
    45    (1)  revisit the grid generation of the AGRIF tools (6 wk) (v3.3) [[BR]] 
    46    (2)  create a automatic OBC data generation (20 wk) (v3.4) [[BR]] 
    47    (3)  Hand changes of the bathymetry through the Java interface developed at IFREMER (16 wk) (v3.4) [[BR]] 
    48    (4)  First full version of the configuration manager  (8 wk) (v3.5) [[BR]] 
    49    '''Principal Investigator :''' Rachid Benshila (rachid.benshila@locean-ipsl.upmc.fr) [[BR]] 
     34=== '''LOCEAN.4 — IOM for outputs''' (continuation) === 
     35  '''Motivation:''' Further developments will be made to impove/add functionality in IOM server. Coll. Yann Meurdesoif [[BR]] '''Status :''' the IOM library interface has been written and implemented in v3.2. [[BR]] '''main tasks :'''  (22 wk)  [[BR]] (1) minimise the number of mpi communication between the IOM server and NEMO (6 wk)[[BR]] (2) benefit from the use of IOM internal elementary operators (10 wk) [[BR]] (3)  Further improve the IOM user interface (4 wk)[[BR]] (4)  documentation (2 wk) (v3.4) [[BR]] '''Principal Investigator :''' Sebastien Masson (smasson@locean-ipsl.upmc.fr) [[BR]] 
    5036 
    51 [[BR]] 
    52 === '''LOCEAN.3 — MPP evolution''' (continuation) === 
    53    '''Motivation:'''  Improve the mpp behaviour of NEMO by playing with width of the overlap area, the number of communication, the dynamical allocation and the suppression of the solvers. [[BR]] 
    54    '''Status :''' the mpp library has been rewritten in 2009 [[BR]] 
    55    '''main tasks :'''   (26wk) [[BR]] 
    56    (1)  Implementation of the mpp_sum giving the same results in single and multi-proc. runs developed at DFO (2 wk) (v3.3) [[BR]]  
    57    (2) introduce and test a 2 points overlap area ( 6 wk) (v3.4) [[BR]]  
    58    (3) minimize the number of communication in the baroclinic loop (regroup and suppress useless one) (6 wk) (v3.4) [[BR]] 
    59    (4) introduce dynamical allocation as developed by Andrew Porter (6 wk) (v3.4)  [[BR]] 
    60    (5) try to merge the filtered and time splitting free surface in order to suppress the solvers and increase the model scalability (flt and rs options) (6 wk) (v3.4) [[BR]] 
    61    '''Principal Investigator :''' Rachid Benshila (rachid.benshila@locean-ipsl.upmc.fr) [[BR]] 
     37=== '''LOCEAN.5 — Coupled interface''' (end) === 
     38  '''Motivation:''' The current coupled surface module only work with LIM2. Its functionality should be extended to the cases where sea ice is not used (for example with region coupled configuration), and where a multi category  sea-ice component is used (LIM3 or CICE). Furthermore, the module is interfaced to OASIS-3 not 4, the latest version which allows parallel coupling.[[BR]] '''Status :'''  The coupled interface with LIM3 is currently developed in the framework of EC-earth project. [[BR]] '''main tasks :'''  (15 wk)   [[BR]] (1) coupled interface without sea-ice component  v3.4 (3 wk)[[BR]] (2) integration of the LIM3 coupled interface in NEMO v3.4 (6 wk)[[BR]] (3) Possibly CICE coupled interface   ==> Met Office  [[BR]] (4) implementation and validation of an OASIS-4 interface in collaboration with E. Maisonnave (CERFACS) (4 wk) [[BR]] (5) documentation of the coupled surface module  (2 wk) [[BR]] '''Principal Investigator :''' Sebastien Masson (smasson@locean-ipsl.upmc.fr) [[BR]] 
    6239 
    63 [[BR]] 
    64 === '''LOCEAN.4 — IOM for outputs''' (continuation) ===   
    65    '''Motivation:''' Further developments will be made to impove/add functionality in IOM server. Coll. Yann Meurdesoif [[BR]] 
    66    '''Status :''' the IOM library interface has been written and implemented in v3.2. [[BR]] 
    67    '''main tasks :'''  (22 wk)  [[BR]] 
    68    (1) minimise the number of mpi communication between the IOM server and NEMO (6 wk)[[BR]] 
    69    (2) benefit from the use of IOM internal elementary operators (10 wk) [[BR]] 
    70    (3)  Further improve the IOM user interface (4 wk)[[BR]] 
    71    (4)  documentation (2 wk) (v3.4) [[BR]] 
    72    '''Principal Investigator :''' Sebastien Masson (smasson@locean-ipsl.upmc.fr) [[BR]] 
     40=== '''LOCEAN.6 — vvl compatibility with TRC''' === 
     41  '''Motivation:'''  The changes introduced in T and S equation for both vvl and the two time stepping strategies should be introduced for the passive tracers (TRC). [[BR]] '''main task  :'''  (6 wk) [[BR]] (1) vvl compatibility (Paris team, 3 wk) (v3.3)  [[BR]] (2) time stepping compatibility (Paris team, 3 wk) (v3.3) [[BR]] '''Principal Investigator :''' Christian Ethé (cetlod@ipsl.jussieu.fr) [[BR]] 
    7342 
    74 [[BR]] 
    75 === '''LOCEAN.5 — Coupled interface''' (end) ===  
    76    '''Motivation:''' The current coupled surface module only work with LIM2. Its functionality should be extended to the cases where sea ice is not used (for example with region coupled configuration), and where a multi category  sea-ice component is used (LIM3 or CICE). Furthermore, the module is interfaced to OASIS-3 not 4, the latest version which allows parallel coupling.[[BR]] 
    77    '''Status :'''  The coupled interface with LIM3 is currently developed in the framework of EC-earth project. [[BR]] 
    78    '''main tasks :'''  (15 wk)   [[BR]] 
    79    (1) coupled interface without sea-ice component  v3.4 (3 wk)[[BR]] 
    80    (2) integration of the LIM3 coupled interface in NEMO v3.4 (6 wk)[[BR]] 
    81    (3) Possibly CICE coupled interface   ==> Met Office  [[BR]] 
    82    (4) implementation and validation of an OASIS-4 interface in collaboration with E. Maisonnave (CERFACS) (4 wk) [[BR]] 
    83    (5) documentation of the coupled surface module  (2 wk) [[BR]] 
    84    '''Principal Investigator :''' Sebastien Masson (smasson@locean-ipsl.upmc.fr) [[BR]] 
     43=== '''LOCEAN.7 — Merge TRA-TRC''' === 
     44  '''Motivation:''' Merge of active and passive tracer advection/diffusion modules to avoid duplication of almost identical modules[[BR]] '''main tasks :'''   (24 wk) [[BR]] (1) replace T and S 3D arrays by 4D arrays throughout the code (2 wk) (v3.4) [[BR]] (2) put the 4D traceur as input argument of advection and diffusion routines (4 wk) (v3.4) [[BR]] (3) merge the TRC and TRA trend diagnostic module (6 wk) (v3.4) [[BR]] '''Principal Investigator :''' Christian Ethé (cetlod@ipsl.jussieu.fr) [[BR]] 
    8545 
    86 [[BR]] 
    87 === '''LOCEAN.6 — vvl compatibility with TRC'''   ===  
    88    '''Motivation:'''  The changes introduced in T and S equation for both vvl and the two time stepping strategies should be introduced for the passive tracers (TRC). [[BR]] 
    89    '''main task  :'''  (6 wk) [[BR]] 
    90    (1) vvl compatibility (Paris team, 3 wk) (v3.3)  [[BR]] 
    91    (2) time stepping compatibility (Paris team, 3 wk) (v3.3) [[BR]] 
    92    '''Principal Investigator :''' Christian Ethé (cetlod@ipsl.jussieu.fr) [[BR]] 
     46=== '''LOCEAN.8 — reference manuels'''  (continuation) === 
     47  '''Motivation:'''  paper documentation a never-ending story. [[BR]] '''main task  :'''  (6 wk)[[BR]] (1) Create the TRP documentation using Latex (similar to the NEMO ocean engine documentation) (Paris team, 2 wk) (v3.3)  [[BR]] (2) update NEMO/OPA documentation in order to better match what is actually in the reference version (Paris team, 4 wk) (v3.3 and followings) [[BR]] (3) review of the written documentation (NOCS team, 1 wk) (v3.3) [[BR]] '''Principal Investigator :''' Christian Ethé (cetlod@ipsl.jussieu.fr) [[BR]] 
    9348 
    94 [[BR]] 
    95 === '''LOCEAN.7 — Merge TRA-TRC'''  === 
    96    '''Motivation:''' Merge of active and passive tracer advection/diffusion modules to avoid duplication of almost identical modules[[BR]] 
    97    '''main tasks :'''   (24 wk) [[BR]] 
    98    (1) replace T and S 3D arrays by 4D arrays throughout the code (2 wk) (v3.4) [[BR]] 
    99    (2) put the 4D traceur as input argument of advection and diffusion routines (4 wk) (v3.4) [[BR]] 
    100    (3) merge the TRC and TRA trend diagnostic module (6 wk) (v3.4) [[BR]] 
    101    '''Principal Investigator :''' Christian Ethé (cetlod@ipsl.jussieu.fr) [[BR]] 
     49=== '''LOCEAN.9 — Update of the ocean physics''' === 
     50  '''Motivation:''' Some aspects of the ocean physics and numeric require  [[BR]] '''Status :''' Item (1) and (2) have been developed but not implemented in the reference. Item (3) and (4) have not started. [[BR]] '''main tasks :'''  (16 wk) [[BR]] (1) Remove the forcing term from the Asselin filter to exactly conserve T & S (Leclair & Madec 2009) (2 wk). [[BR]] (2) distibute a daily solar radiation on diurnal cycle over the model time step (2 wk) (v3.3) [[BR]] (3) revisite the bottom boundary layer implementation (merge of advective and diffusive bbl modules) and improve the advective case (8 wk) (v3.4) [[BR]] (4) develop and validate the Fox-Kemper parameterisation (restratification of the mixed layer by sub-meso-scale eddies) (4 wk) (v3.3) [[BR]] '''Principal Investigator :''' Gurvan Madec (gm@locean-ipsl.upmc.fr) [[BR]] 
    10251 
    103 [[BR]] 
    104 === '''LOCEAN.8 — reference manuels'''  (continuation)  ===  
    105    '''Motivation:'''  paper documentation a never-ending story. [[BR]] 
    106    '''main task  :'''  (6 wk)[[BR]] 
    107    (1) Create the TRP documentation using Latex (similar to the NEMO ocean engine documentation) (Paris team, 2 wk) (v3.3)  [[BR]] 
    108    (2) update NEMO/OPA documentation in order to better match what is actually in the reference version (Paris team, 4 wk) (v3.3 and followings) [[BR]] 
    109    (3) review of the written documentation (NOCS team, 1 wk) (v3.3) [[BR]] 
    110    '''Principal Investigator :''' Christian Ethé (cetlod@ipsl.jussieu.fr) [[BR]] 
     52=== '''LOCEAN.10 — ORCA2-LIM based on NEMO''' (continuation) === 
     53  '''Motivation:''' Provide to all groups using NEMO in coupled O/I/A simulations a reference set of forced experiments that document the effect of various physical package as well as the changes from the OPA8 to NEMO with respect to the ocean and ice components (and possibly PISCES). This is part of the IsENES EU project. [[BR]] '''Status :''' ORCA2-LIM2 configuration (bathy, physics) has been updated, and Standard output for IPCC runs using IOM(v3.2). An environment has been developed to run long forced and coupled experiments together with the creation of standard control plots. [[BR]] '''main tasks :'''   (< 25 wk) [[BR]] (1) ORCA2-LIM3 configuration, coll. with UCL (5 wk) (v3.4). [[BR]] (2) reference CORE2 normal year and interannual simulations (6 wk) (v3.2) [[BR]] (3) A series of runs (starting from the NEMO physics down to OPA8 physics not necessary all with both mean seasonal and interannual forcing. (v3.4) (8 wk) [[BR]] (4) Web and paper documentations of the behaviour found (v3.4) (6 wk) (v3.4) [[BR]] (5) Possibly reference experiment with other resolution (ORCA1, 05, 025…) (v3.X) [[BR]] (6) Possibly reference experiment with ORCA2-LIM-PISCES (v3.X) [[BR]] '''Principal Investigator :''' Gurvan Madec (gm@locean-ipsl.upmc.fr) [[BR]] 
    11154 
    112 [[BR]] 
    113 === '''LOCEAN.9 — Update of the ocean physics''' ===  
    114          '''Motivation:''' Some aspects of the ocean physics and numeric require  [[BR]] 
    115          '''Status :''' Item (1) and (2) have been developed but not implemented in the reference. Item (3) and (4) have not started. [[BR]] 
    116          '''main tasks :'''  (16 wk) [[BR]] 
    117          (1) Remove the forcing term from the Asselin filter to exactly conserve T & S (Leclair & Madec 2009) (2 wk). [[BR]] 
    118          (2) distibute a daily solar radiation on diurnal cycle over the model time step (2 wk) (v3.3) [[BR]] 
    119          (3) revisite the bottom boundary layer implementation (merge of advective and diffusive bbl modules) and improve the advective case (8 wk) (v3.4) [[BR]] 
    120          (4) develop and validate the Fox-Kemper parameterisation (restratification of the mixed layer by sub-meso-scale eddies) (4 wk) (v3.3) [[BR]] 
    121          '''Principal Investigator :''' Gurvan Madec (gm@locean-ipsl.upmc.fr) [[BR]] 
    122  
    123 [[BR]] 
    124 === '''LOCEAN.10 — ORCA2-LIM based on NEMO''' (continuation) === 
    125          '''Motivation:''' Provide to all groups using NEMO in coupled O/I/A simulations a reference set of forced experiments that document the effect of various physical package as well as the changes from the OPA8 to NEMO with respect to the ocean and ice components (and possibly PISCES). This is part of the IsENES EU project. [[BR]] 
    126          '''Status :''' ORCA2-LIM2 configuration (bathy, physics) has been updated, and Standard output for IPCC runs using IOM(v3.2). An environment has been developed to run long forced and coupled experiments together with the creation of standard control plots. [[BR]] 
    127          '''main tasks :'''   (< 25 wk) [[BR]] 
    128          (1) ORCA2-LIM3 configuration, coll. with UCL (5 wk) (v3.4). [[BR]] 
    129          (2) reference CORE2 normal year and interannual simulations (6 wk) (v3.2) [[BR]] 
    130          (3) A series of runs (starting from the NEMO physics down to OPA8 physics not necessary all with both mean seasonal and interannual forcing. (v3.4) (8 wk) [[BR]] 
    131          (4) Web and paper documentations of the behaviour found (v3.4) (6 wk) (v3.4) [[BR]] 
    132          (5) Possibly reference experiment with other resolution (ORCA1, 05, 025…) (v3.X) [[BR]] 
    133          (6) Possibly reference experiment with ORCA2-LIM-PISCES (v3.X) [[BR]] 
    134          '''Principal Investigator :''' Gurvan Madec (gm@locean-ipsl.upmc.fr) [[BR]] 
    135  
    136 [[BR]] 
    13755=== '''LOCEAN.11 — Development of TAM''' (continuation) === 
    138          '''Motivation:''' development of the Tangent and Adjoint Model (TAM) of NEMO.[[BR]] 
    139          '''Status :''' Grenoble acion (LJK, LEGI, ANR VODA), a 3 years, started in 2008, and well engaged. [[BR]] 
    140          '''main tasks :''' (20 wk) [[BR]] 
    141          (1) write the linear tangent model of NEMO/OPA and the validation tools. (v3.4 or v3.5) [[BR]] 
    142          (2) write the Adjoint model of NEMO/OPA and the validation tools. (v3.5) [[BR]] 
    143          (3) create tutorial, test cases and reference experiment (v3.5) [[BR]] 
    144          '''Principal Investigator :''' name (email adress) [[BR]] 
    145  
     56  '''Motivation:''' development of the Tangent and Adjoint Model (TAM) of NEMO.[[BR]] '''Status :''' Grenoble acion (LJK, LEGI, ANR VODA), a 3 years, started in 2008, and well engaged. [[BR]] '''main tasks :''' (20 wk) [[BR]] (1) write the linear tangent model of NEMO/OPA and the validation tools. (v3.4 or v3.5) [[BR]] (2) write the Adjoint model of NEMO/OPA and the validation tools. (v3.5) [[BR]] (3) create tutorial, test cases and reference experiment (v3.5) [[BR]] '''Principal Investigator :''' name (email adress) [[BR]]