Changes between Version 66 and Version 67 of 2015WP/2015SharedActions
- Timestamp:
- 2014-11-06T16:27:20+01:00 (9 years ago)
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2015WP/2015SharedActions
v66 v67 79 79 === '''AGRIF''' === 80 80 ==== ''' '''AGRIF-1 / Met_Office-7 - AGRIF vertical grid refinement ==== 81 ''' Motivation: ''' Vertical grid refinement in NEMO would be a useful tool in simulating some aspects of the ocean (e.g. overflows) [[BR]] ''' Status: ''' Laurent Debreu has a first attempt version of this. [[BR]] ''' Main Tasks: ''' Take Laurent's 1st attempt code and update/improve it to provide this functionality [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' Medium [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : '''Daley Calvert/Tim Graham (TBD)81 ''' Motivation: ''' Vertical grid refinement in NEMO would be a useful tool in simulating some aspects of the ocean (e.g. overflows) [[BR]] ''' Status: ''' Laurent Debreu has a first attempt version of this. [[BR]] ''' Main Tasks: ''' Take Laurent's 1st attempt code and update/improve it to provide this functionality [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' Medium [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : ''' Daley Calvert/Tim Graham (TBD) 82 82 83 83 === AGRIF-3 /MERCATOR-3 - test last developpment of coupling at barotropic time step and vvl adaptation with new version of agrif === … … 95 95 96 96 ==== CONFIGMAN-2 / NOC-1 - BDY configuration tool ==== 97 ''' Motivation: ''' The ability for NEMO to be configured and run as a regional model with open boundaries forced with output saved from a wider area configuration is under-used due to the difficulty of preparing suitable boundary files. This task aims to contribute to the Configuration manager shared action by providing a high-level tool capable of completing all the necessary steps. [[BR]] ''' Status :''' [[BR]] ''' Main tasks :''' To produce an open source Python tool to configure open boundary (BDY) condition files for use with NEMO v3.4 onwards by transferring data from global NEMO simulations to defined regional domains. The tool will produce tracer/ice/dynamics (including tidal boundaries from TPXO7.2) BDY files. Written in Python this tool will be ready for integration into an all encompassing 'Configuration Manager' if desired. [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator :'''James Harle97 ''' Motivation: ''' The ability for NEMO to be configured and run as a regional model with open boundaries forced with output saved from a wider area configuration is under-used due to the difficulty of preparing suitable boundary files. This task aims to contribute to the Configuration manager shared action by providing a high-level tool capable of completing all the necessary steps. [[BR]] ''' Status :''' [[BR]] ''' Main tasks :''' To produce an open source Python tool to configure open boundary (BDY) condition files for use with NEMO v3.4 onwards by transferring data from global NEMO simulations to defined regional domains. The tool will produce tracer/ice/dynamics (including tidal boundaries from TPXO7.2) BDY files. Written in Python this tool will be ready for integration into an all encompassing 'Configuration Manager' if desired. [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator :''' James Harle 98 98 99 99 ==== CONFIGMAN-3 / MERCATOR-2 - Merge BDY configuration tool and SIREN ==== … … 102 102 === '''System simplification''' === 103 103 ==== SIMPLIF-1 / NOC-3 - System support and Simplification work ==== 104 ''' Motivation: ''' The need for simplifying NEMO in preparation for next generation computer architecture work has been accepted by the NEMO community. The exact details of what is to be done and the timing and order of these changes has yet to be decided. 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 plans. This block also covers routine system team work to respond to user initiated tasks (bug-fixes, requests for assistance, documentation etc.). [[BR]] ''' Status :''' [[BR]] ''' Main tasks :''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : '''Andrew Coward104 ''' Motivation: ''' The need for simplifying NEMO in preparation for next generation computer architecture work has been accepted by the NEMO community. The exact details of what is to be done and the timing and order of these changes has yet to be decided. 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 plans. This block also covers routine system team work to respond to user initiated tasks (bug-fixes, requests for assistance, documentation etc.). [[BR]] ''' Status :''' [[BR]] ''' Main tasks :''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : ''' Andrew Coward 105 105 106 106 ==== SIMPLIF-2 / CMCC-4 - System simplification ==== 107 ''' Motivation: ''' CMCC will contribute to the simplification process removing obsolescent features. Specific details on what and when have yet to be worked out. [[BR]] ''' Status :''' [[BR]] ''' Main tasks :''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : '''Dorotea Iovino107 ''' Motivation: ''' CMCC will contribute to the simplification process removing obsolescent features. Specific details on what and when have yet to be worked out. [[BR]] ''' Status :''' [[BR]] ''' Main tasks :''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : ''' Dorotea Iovino 108 108 109 109 === '''Wave Coupling''' === 110 110 ==== Wave Coupling-1 / Met Office-8 - Modifications to surface coupling required for surface waves ==== 111 ''' Motivation: ''' Surface wave coupling will require changes to sbccpl to allow surface waves in coupled models (Action from Wave WG meeting) [BR]] ''' Main tasks :''' Changes to sbccpl [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' high [[BR]] ''' Depends on: Wave Coupling-2''' [[BR]] ''' Principal Investigator: '''Francois-Xavier Boquet111 ''' Motivation: ''' Surface wave coupling will require changes to sbccpl to allow surface waves in coupled models (Action from Wave WG meeting) [BR]] ''' Main tasks :''' Changes to sbccpl [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' high [[BR]] ''' Depends on: Wave Coupling-2''' [[BR]] ''' Principal Investigator: ''' Francois-Xavier Boquet 112 112 113 113 ==== Wave Coupling-2 / INGV-1 - Implementation of the WAVE-WG 2014 results ==== 114 ''' Motivation: ''' In 2014 the Wave–WG defined a series of developments to be implemented by the WG participants in order to implement processes occurring from meso-scale to large-scale. A temporary branch hosting the surface wave components from ECMWF already exists and some modifications respect to this branch have been identified. INGV will take care of some of the developments identified [[BR]] ''' Status :''' Implementation of some of the identified processes has been started in 2014. To be continued in 2015 [[BR]] ''' Main tasks :''' [[BR]] - 3D Stokes drift computation will be modified according to Breivik et al., (2014) formulation. It will be a public variable to be used also in other terms (tracers and momentum advection, surface vertical velocity); [[BR]] - implementation of surface vertical velocity accounting for the Stokes Drift in case of wave coupling; [[BR]] - implementation of the tracers advection accounting for the 3D Stokes drift; [[BR]] - implementation of the Qiao et al., (2010) formulation accounting for the enhanced vertical mixing induced by waves; [[BR]] - others if agreed by the WAVE-WG. [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' high [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator: '''Emanuela Clementi (emanuela.clementi@ingv.it)114 ''' Motivation: ''' In 2014 the Wave–WG defined a series of developments to be implemented by the WG participants in order to implement processes occurring from meso-scale to large-scale. A temporary branch hosting the surface wave components from ECMWF already exists and some modifications respect to this branch have been identified. INGV will take care of some of the developments identified [[BR]] ''' Status :''' Implementation of some of the identified processes has been started in 2014. To be continued in 2015 [[BR]] ''' Main tasks :''' [[BR]] - 3D Stokes drift computation will be modified according to Breivik et al., (2014) formulation. It will be a public variable to be used also in other terms (tracers and momentum advection, surface vertical velocity); [[BR]] - implementation of surface vertical velocity accounting for the Stokes Drift in case of wave coupling; [[BR]] - implementation of the tracers advection accounting for the 3D Stokes drift; [[BR]] - implementation of the Qiao et al., (2010) formulation accounting for the enhanced vertical mixing induced by waves; [[BR]] - others if agreed by the WAVE-WG. [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' high [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator: ''' Emanuela Clementi (emanuela.clementi@ingv.it) 115 115 116 116 ==== Wave Coupling-3 / INGV-2 - Reference configuration to test wave-current interactions ==== 117 ''' Motivation: ''' A reference configuration is needed in order to test the wave-current developments as agreed by the WAVE-WG [[BR]] ''' Status :''' To be started [[BR]] ''' Main tasks:''' Contribute, within the WAVE-WG, in the definition and implementation of a reference configuration to test the wave-current processes implemented ''' [[BR]] System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' INGV.01 and NEMO-WAVE WG actions [[BR]] ''' Principal Investigator: '''Emanuela Clementi (emanuela.clementi@ingv.it)117 ''' Motivation: ''' A reference configuration is needed in order to test the wave-current developments as agreed by the WAVE-WG [[BR]] ''' Status :''' To be started [[BR]] ''' Main tasks:''' Contribute, within the WAVE-WG, in the definition and implementation of a reference configuration to test the wave-current processes implemented ''' [[BR]] System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' INGV.01 and NEMO-WAVE WG actions [[BR]] ''' Principal Investigator: ''' Emanuela Clementi (emanuela.clementi@ingv.it) 118 118 119 119 ==== Wave Coupling-4 / INGV-3 - Definition of wave coupling at small (coastal) scale ==== 120 ''' Motivation: ''' According to the WAVE-WG, in order to achieve a full wave-current coupling, the small (coastal) scale processes need to be investigated [[BR]] ''' Status:''' To be started [[BR]] ''' Main tasks:''' Contribute, within the WAVE-WG, in the analysis of this issue in order to finalize the discussion started in 2014 before proceeding with any new implementation [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator: '''Michela De Dominicis (michela.dedominicis@ingv.it)120 ''' Motivation: ''' According to the WAVE-WG, in order to achieve a full wave-current coupling, the small (coastal) scale processes need to be investigated [[BR]] ''' Status:''' To be started [[BR]] ''' Main tasks:''' Contribute, within the WAVE-WG, in the analysis of this issue in order to finalize the discussion started in 2014 before proceeding with any new implementation [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator: ''' Michela De Dominicis (michela.dedominicis@ingv.it) 121 121 122 122 === '''NEMO robustness''' === 123 === ROBUST-1/MERCATOR-4 - TOP online coarsening === 124 ''' Motivation: '''run online top/pisces with lower resolution than physics [[BR]] ''' Status : ''' developped on NEMO_3.4 / run with ORCA025 [[BR]] ''' Main tasks :''' [[BR]] -bug correction for output coarsening ( already in NEMO 3.6 ) [[BR]] -test output coarsening with ORCA025 [[BR]] -phasing new routines for TOP/PISCES and OPA from 3.4 to 3.6 [[BR]] -adaptation to VVL [[BR]] -time degradation [[BR]] ''' Science Reviewer:''' Gurvan Madec <gm@locean-ipsl.upmc.fr> [[BR]] ''' System Reviewer:''' Gurvan Madec <gm@locean-ipsl.upmc.fr> [[BR]] ''' Deadline:''' april 2015 [[BR]] ''' Priority:''' high [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : ''' Clement Bricaud <cbricaud@mercator-ocean.fr>,Christian Ethé <Christian.Ethe@ipsl.jussieu.fr>, Coralie Perruche <cperruche@mercator-ocean.fr> [[BR]] 123 ==== ROBUST-1/MERCATOR-4 - TOP online coarsening ==== 124 ''' Motivation: '''run online top/pisces with lower resolution than physics [[BR]] ''' Status : ''' developped on NEMO_3.4 / run with ORCA025 [[BR]] ''' Main tasks :''' [[BR]] -bug correction for output coarsening ( already in NEMO 3.6 ) [[BR]] -test output coarsening with ORCA025 [[BR]] -phasing new routines for TOP/PISCES and OPA from 3.4 to 3.6 [[BR]] -adaptation to VVL [[BR]] -time degradation [[BR]] ''' Science Reviewer:''' Gurvan Madec <gm@locean-ipsl.upmc.fr> [[BR]] ''' System Reviewer:''' Gurvan Madec <gm@locean-ipsl.upmc.fr> [[BR]] ''' Deadline:''' april 2015 [[BR]] ''' Priority:''' high [[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : ''' Clement Bricaud <cbricaud@mercator-ocean.fr>,Christian Ethé <Christian.Ethe@ipsl.jussieu.fr>, Coralie Perruche <cperruche@mercator-ocean.fr> 125 126 ==== ROBUST-2 -CNRS-7 - NEMO ready for ESMs-CMIP6: ORCA1_LIM3_PISCES ==== #CNRS-7-SharedactionROBUSTNESS-NEMOreadyforESMs-CMIP6:ORCA1_LIM3_PISCES 127 ''' Motivation: '''Set-up run and validate the ORCA1_LIM3_PISCES configuration on nemo_v3.6_STABLE release to be ready for CMIP6[[BR]] ''' Status :''' Started in 2014. First control run available[[BR]] ''' Main tasks :''' Finalize physical and numerical choices for this configuration. Run and validate the forced reference experiments. Distribute this shared configuration on a specific svn/dods project (separate from NEMO reference)[[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' May 2015[[BR]] ''' Priority:''' 1 (= for CMIP6)[[BR]] ''' Depends on:''' [[BR]] ''' Principal Investigator : '''Claire Lévy 125 128 126 129 ==== ROBUST-3 / Met_Office-12 - Validation (including ORCA025/AMM12/AMM7) ==== 127 ''' Motivation: ''' Model configurations need to be validated before the release of the model. [[BR]] ''' Status: ''' '''Main Tasks: '''130 ''' Motivation: ''' Model configurations need to be validated before the release of the model. [[BR]] ''' Status: ''' ''' Main Tasks: ''' 128 131 129 132 * Upgrading configs to new model version (after merge party) … … 135 138 ''' Motivation: ''' Model configurations need to be validated before the release of the model. [[BR]] ''' Status: ''' ORCA025_LIM2 with filtread free surface or time splitting is already running at Mercator [[BR]] ''' Main Tasks: Test and validation with ORCA025 of: ''' [[BR]] 136 139 137 -LIM2 vs LIM3 [[BR]] -GLS vs TKE [[BR]] -time-splitting vs filtred free surface [[BR]] -vector form vs UBS for momentum advection [[BR]] -run ORCA025 with Z* [[BR]] -online coarsening [[BR]] -run ORCA12 with time-splitting/LIM2/GLS/UBS? [[BR]]-online coarsening [[BR]]140 -LIM2 vs LIM3 [[BR]] -GLS vs TKE [[BR]] -time-splitting vs filtred free surface [[BR]] -vector form vs UBS for momentum advection [[BR]] -run ORCA025 with Z* [[BR]] -online coarsening [[BR]] -run ORCA12 with time-splitting/LIM2/GLS/UBS? [[BR]] -online coarsening [[BR]] 138 141 139 142 ''' Science Reviewer:''' Martin Vancoppenolle <martin.vancoppenolle@locean-ipsl.upmc.fr>,"Andrew C. Coward" <acc@noc.ac.uk>,Gurvan Madec <Gurvan.Madec@locean-ipsl.upmc.fr> [[BR]] ''' System Reviewer:''' N/A [[BR]] ''' Deadline:''' [[BR]] ''' Priority:''' medium [[BR]] ''' Depends on: '''implementation of online coarsening [[BR]] ''' Principal Investigator : ''' Clement Bricaud <cbricaud@mercator-ocean.fr>,Romain Bourdallé-Badie <rbourdal@mercator-ocean.fr>, Jerome Chanut <jchanut@mercator-ocean.fr> [[BR]] 140 143 141 144 ==== ''' '''ROBUST-5 / Met_Office-11 - Numerical Mixing ==== 142 ''' Motivation: ''' Recent tests with the Lee et al (JPO 2002) diagnostic in ORCA025 have shown that NEMO in common with other models has high levels of numerical mixing of water masses in the interior when used at eddy-permitting resolution. The goal of this action is to further quantify this in the ORCA025 configuration and test options that may reduce the problem. This action aims to address section 4.3 of the NEMO development strategy. [[BR]] ''' Status: ''' Lee et al diagnostics have been developed by Alex Megann at NOC. [[BR]] '''Main Tasks: '''145 ''' Motivation: ''' Recent tests with the Lee et al (JPO 2002) diagnostic in ORCA025 have shown that NEMO in common with other models has high levels of numerical mixing of water masses in the interior when used at eddy-permitting resolution. The goal of this action is to further quantify this in the ORCA025 configuration and test options that may reduce the problem. This action aims to address section 4.3 of the NEMO development strategy. [[BR]] ''' Status: ''' Lee et al diagnostics have been developed by Alex Megann at NOC. [[BR]] ''' Main Tasks: ''' 143 146 144 147 * Repeat Lee et al diagnosis for coupled model with ORCA025 [[BR]] … … 151 154 152 155 ==== ''' '''ROBUST-6 / CMCC-5 - OBC with BDY for biogeochemistry ==== 153 ''' Motivation: ''' finalize the treatment of boundary conditions for TOP [[BR]] ''' Status :''' continuation [[BR]] ''' Main tasks :''' use BDY with biogeochemistry using the structures implemented in 2014 development.[[BR]] ''' Science Reviewer:''' D. Storkey [[BR]] ''' System Reviewer:''' C. Ethé [[BR]] ''' Deadline: ''' March 2015 [[BR]] ''' Priority: ''' HIGH [[BR]] ''' Depends on: ''' [[BR]] ''' Principal Investigator : '''Tomas Lovato156 ''' Motivation: ''' finalize the treatment of boundary conditions for TOP [[BR]] ''' Status :''' continuation [[BR]] ''' Main tasks :''' use BDY with biogeochemistry using the structures implemented in 2014 development.[[BR]] ''' Science Reviewer:''' D. Storkey [[BR]] ''' System Reviewer:''' C. Ethé [[BR]] ''' Deadline: ''' March 2015 [[BR]] ''' Priority: ''' HIGH [[BR]] ''' Depends on: ''' [[BR]] ''' Principal Investigator : ''' Tomas Lovato 154 157 155 158 ==== ROBUST-8 / Met_Office-9 - Further 1D configuration changes ==== 156 ''' Motivation: ''' Add further functionality that there wasn't time for in the 2013 development[[BR]] ''' Status :''' [[BR]] ''' Main tasks :''' Add namelist domain control, case studies, maybe remove CPP key dependence.[[BR]] ''' Science Reviewer:''' Romain Bourdalle-Badie [[BR]] ''' System Reviewer:''' Romain Bourdalle-Badie [[BR]] ''' Deadline:''' October 2015[[BR]] ''' Priority:''' Medium [[BR]] ''' Depends on: ''' N/A [[BR]] ''' Principal Investigator : '''Daley Calvert (daley.calvert@metoffice.gov.uk)159 ''' Motivation: ''' Add further functionality that there wasn't time for in the 2013 development[[BR]] ''' Status :''' [[BR]] ''' Main tasks :''' Add namelist domain control, case studies, maybe remove CPP key dependence.[[BR]] ''' Science Reviewer:''' Romain Bourdalle-Badie [[BR]] ''' System Reviewer:''' Romain Bourdalle-Badie [[BR]] ''' Deadline:''' October 2015[[BR]] ''' Priority:''' Medium [[BR]] ''' Depends on: ''' N/A [[BR]] ''' Principal Investigator : ''' Daley Calvert (daley.calvert@metoffice.gov.uk) 157 160 158 161 ==== ROBUST-9 / Met_Office-10 - Effiency improvements in OBS ==== … … 160 163 161 164 ==== ROBUST-10 / CNRS-11 - Lead working Group on Tests cases ==== 162 ''' Motivation: ''' There are several motivations to define a suite 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). This work will be done in throughout a Working Group. The purpose of the Working Group is to (i) specify the expected outcome of standard test-cases in NEMO and (ii) to define how standard test-cases should be distributed within NEMO. There will be interactions with Configuration Manager Working Group to decide how input files (bathymetry, coordinates,...) will be given, and how they will be maintained. In 2015, this new working group will need to be started (list of members to be fianlised during Developer’s Committee 2014).[[BR]] ''' Status : ''' Starting[[BR]] ''' Main tasks :''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority: ''' P2 (2nd semester 2015)[[BR]] ''' Depends on: ''' Simplification, Configuration Manager…[[BR]] ''' Principal Investigator : '''Simona Flavoni165 ''' Motivation: ''' There are several motivations to define a suite 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). This work will be done in throughout a Working Group. The purpose of the Working Group is to (i) specify the expected outcome of standard test-cases in NEMO and (ii) to define how standard test-cases should be distributed within NEMO. There will be interactions with Configuration Manager Working Group to decide how input files (bathymetry, coordinates,...) will be given, and how they will be maintained. In 2015, this new working group will need to be started (list of members to be fianlised during Developer’s Committee 2014).[[BR]] ''' Status : ''' Starting[[BR]] ''' Main tasks :''' [[BR]] ''' Science Reviewer:''' [[BR]] ''' System Reviewer:''' [[BR]] ''' Deadline:''' [[BR]] ''' Priority: ''' P2 (2nd semester 2015)[[BR]] ''' Depends on: ''' Simplification, Configuration Manager…[[BR]] ''' Principal Investigator : ''' Simona Flavoni 163 166 164 167 === GMD/ MERCATOR-6 - GMD special issue: Modelling turbulent vertical mixing sensitivity using a 1-D version of NEMOC ===