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Met_Office-NEMO team - 2014 actions

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members

Name Institution % Position
Tim Graham Met Office 40 NEMO officer
Dave Storkey Met Office 20 NEMO developer
Enda O'Dea Met Office 20 NEMO developer
Daley Calvert Met Office 20 NEMO developer

Summary: List here actions of the institution so as contributions to shared actions

Action Brief description Status Branch name Trac ticket n° Wiki page name Reviewer(s) Review status Nb of weeks Ready for merge If "NO", reason and status for 2015
Met_Office-1 Process evaluation of diapycnal mixing N/A N/A N/A N/A Research work that is unlikely to result in code changes
Met_Office-2 Ice shelf cavities #1331 https://forge.ipsl.jussieu.fr/nemo/wiki/ticket/1331_UKMO2_ice_shelves Gurvan Madec and Andrew Coward
Met_Office-3 Masked damping #1296 https://forge.ipsl.jussieu.fr/nemo/wiki/ticket/1296 Clement Bricaud
Met_Office-4 Ensure CF/MOCF compliance and implement CMIP5 diagnostics #1332 https://forge.ipsl.jussieu.fr/nemo/wiki/ticket/1332 Sebastien Masson
Met_Office-5 Kara mixed layer diagnostic #1333 https://forge.ipsl.jussieu.fr/nemo/wiki/ticket/1333 Paolo Oddo
Met_Office-6 Sponge Layer at open boundaries
Met_Office-7 Allow specification of an hour start time #1310 wiki:ticket/1310 Simona Flavoni Cadot
Met_Office-8 Inclusion of surface wave effects in NEMO #1341 wiki:ticket/1341? Paolo Oddo?
Met_Office-9 Further 1D configuration changes #1344 https://forge.ipsl.jussieu.fr/nemo/wiki/ticket/1344 Romain Bourdalle-Badie
Met_Office-10 Tidally meaned diagnostics #1319 https://forge.ipsl.jussieu.fr/nemo/ticket/1319 Sebastien Masson
Met_Office-11 Outputting restarts at specified times instead of specified frequency #1347 https://forge.ipsl.jussieu.fr/nemo/wiki/ticket/1347 Gilles Garric
Met_Office-12 CFL diagnostic #1306 https://forge.ipsl.jussieu.fr/nemo/wiki/ticket/1306 Italo Epicoco
Met_Office-13 Updates to CICE interface for CICE 5
Met_Office-14 Updates and improvements to OBS and ASM (See below…) - - - - - - - -
Met_Office-14.1 Equatorial Pressure correction #1311 wiki:ticket/1311 NEMOVAR community
Met_Office-14.2 Sea ice increments #1312 wiki:ticket/1312 NEMOVAR community
Met_Office-14.3 Temperature mixed layer #1316 wiki:ticket/1316 Paolo Oddo
Met_Office-14.10 Addition of Satellite Surface Salinity data and Microwave SST #1313 wiki:ticket/1313 NEMOVAR community
Met_Office-14.11 Implement assimilation interface SETTE test #1314 wiki:ticket/1314 Simona Flavoni Cadot / NEMOVAR community
Met_Office-14.12 Improvements to offline OBS operator
Met_Office-15 Contribute to AGRIF working group
Met_Office-16 Work on overflow Paramterisations N/A N/A N/A N/A N/A Ongoing research work unlikely to result in code changes this year

Met_Office-1 - Process Evaluation of diapycnal mixing

Motivation: To caryy out process evaluation of diapycnal mixing
Status :
Main tasks :
Science Reviewer: N/A
System Reviewer: N/A
Deadline:
Priority: High
Depends on: N/A
Principal Investigator : Dave Storkey (dave.storkey@…)

Met_Office-2 - Ice Shelf Cavities

Motivation: Include circulation and melting beneath the ice shelves. An ice shelf is a floating extension of an ice sheet that is sandwiched between atmosphere and ocean. Basal melting of ice shelves is one of the main components of the fresh water runoff around Antarctica. Furthermore, this fresh water source is spread between 200m and 1000m depth. The temperature of this water is also much colder than the winter surface water due to the pressure effect on the freezing point temperature (from -1.8°C in surface up to -2.5°C in depth). Consequently, ice shelves lead to large changes in TS properties on the shelf, in sea ice thickness and concentration, in Antarctic bottom water formation, in horizontal circulation as well as in meridional overturning circulation (Hellmer et al., 2004). Modelling ice shelf basal melting is also a required step to build an earth system model including ocean/ice sheet coupling.
Status : Code exists (version 3.4_stable) in BAS and works for regional configuration of Pine Island Glacier and idealised configuration ISOMIP.
Main tasks :

  • Validate it for all ice shelves around Antarctica
  • Update to latest version
  • Clean the code
  • Write documentation

Science Reviewer: Gurvan Madec
System Reviewer: Andrew Coward
Deadline: September 2014
Priority: Medium
Depends on: N/A
Principal Investigator : Pierre Mathiot (piethi@…)

Met_Office-3 - Masked damping

Motivation: To allow generic damping in specific regions
Status : Code exists at vn3.4
Main tasks : Module will be developed to damp Temperature & Salinity in any region specified using a mask read in from a netcdf file. The module will be developed outside of the current tradmp module to avoid conflicts with the hard coded resolution dependent regional variations to the damping that are currently implemented in this module. Regional variations to the damping will be permitted by specifying values of the mask between zero and one where zero indicates no damping at that grid point and non-zero values indicate damping with a relaxation coefficient value obtained by multiplying the mask value with a namelist specified max relaxation coefficient.
Science Reviewer: Clement Bricaud
System Reviewer: Clement Bricaud
Deadline: September 2014
Priority: Medium
Depends on: N/A
Principal Investigator : Tim Graham (tim.graham@…)

Met_Office-4 - Ensure CF/MOCF compliance and implement CMIP5 diagnostics

Motivation: Standardization of output to meet CF and MOCF compliance and addition of CMIP5 diagnostics in XIOS
Status : Not started
Main tasks : Necessary NEMO-side code modifications where XIOS does not support the required changes (and there are no plans to)
Science Reviewer: Sebastien Masson
System Reviewer: Sebastien Masson
Deadline: October 2014 (but depends on CMIP5 and UKMO requirements)
Priority:
Depends on: Feedback from Alistair Sellar (UKMO), Matt Palmer(UKMO) & others
Principal Investigator : Daley Calvert (daley.calvert@…)

Met_Office-5 - Kara mixed layer diagnostic

Motivation: Add the Kara et al. variable density criterion MLD diagnostic to allow comparison with their MLD climatology
Status : Has existed in a local UKMO branch for sometime, but needs updating, and retesting
Main tasks : Check the existing code and implement in the appropriate NEMO version
Science Reviewer: Paolo Oddo
System Reviewer: Paolo Oddo
Deadline: October 2014 (likely sooner since there is little to do)
Priority: Medium
Depends on: N/A
Principal Investigator : Daley Calvert (daley.calvert@…)

Met_Office-6 - Sponge Layer at open boundaries

Motivation: Add the sponge layer (region of increased lateral viscosity) near open boundaries as an option in BDY
Status : Has existed in a local branch for a while
Main tasks : Check the existing code and implement in the appropriate NEMO version
Science Reviewer: Jerome Chanut
System Reviewer: Jerome Chanut
Deadline: October 2014 (likely sooner since there is little to do)
Priority: Medium
Depends on: N/A
Principal Investigator : Dave Storkey (dave.storkey@…)

Met_Office-7 - Allow specification of an hour start time

Motivation: NEMO currently assumes runs start at 00 UTC. For the coupled DA work we needed to change the code to start at a specified hour and date.
Status : The code exits in a local branch at vn3.2
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer:Simona Flavoni Cadot
System Reviewer:Simona Flavoni Cadot
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : Dan Lea (daniel.lea@…)

Met_Office-8 - Inclusion of surface wave effects in NEMO coupling interrface

Motivation: Modifying NEMO coupling interface to add relevant parameters to incorporate wave effects
Status : Not started
Main tasks : NEMO-side code modifications to read/couple wave fields
Science Reviewer: Done within wave working group
System Reviewer: Done within wave working group
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : Francois-Xavier Bocquet (francois.bocquet@…)

Met_Office-9 - Further 1D configuration changes

Motivation: Add further functionality that there wasn't time for in the 2013 development
Status : Plan exists
Main tasks : Add namelist domain control, case studies, maybe remove CPP key dependence.
Science Reviewer: Romain Bourdalle-Badie
System Reviewer: Romain Bourdalle-Badie
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : Daley Calvert (daley.calvert@…)

Met_Office-10 - Tidally meaned diagnostics

Motivation: Implementing 25 hour means (an average of 25 instantaneous hourly values, midnight to midnight, so each midnight is included for both the day preceding it, and the day following it) provides a simple way of detiding model runs as it largely averages out the main M2 tidal signal. These outputs give a rough idea of the residual flows, mean ssh etc. on a particular day
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer: Sebastien Masson
System Reviewer: Sebastien Masson
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : Enda O'Dea (enda.odea@…)

Met_Office-11 - Outputting restarts at specified times instead of specified frequency

Motivation: Operationally we require the flexibility to output restarts at specified times rather than at a specified frequency. This used to be an option in the NEMO trunk but disappeared at v3.0 and we have been maintaining the required code since then. The code uses the nstocklist functionality. This code change will also add the option to specify a directoty to which to write restarts.
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer: Gilles Garric
System Reviewer: Gilles Garric
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : Ed Blockley (ed.blockley@…)

Met_Office-12 - CFL diagnostic

Motivation: To calculate and output the maximum CFL parameter during a run, to inform users of stability constraints.
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer: N/A
System Reviewer: Italo Epicoco
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : Tim Graham (tim.graham@…)

Met_Office-13 - Updates to CICE interface

Met_Office-13.1 - Updates to CICE interface for CICE 5 Motivation: The coupling to CICE directly uses CICE array names and unfortunately some of these have changed between CICE4 and CICE5. Future NEMO versions should certainly support CICE5 and ideally also CICE4 although we could decide to deprecate that later. If we want to allow both options they could potentially be switched through some kind of cpp key control.
Status : Not yet started
Main tasks : Amend existing CICE interface to use CICE5 names depending in cpp keys used
Science Reviewer:
System Reviewer:
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : Dave Storkey / Tim Graham

Met_Office-13.2 - Salinity dependent freezing temperature
Motivation: Implementation of salinity dependent freezing temperature in NEMO which can be passed to sea ice and atmosphere models
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer:
System Reviewer:
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : Dave Storkey (dave.storkey@…)

Met_Office-14 - Updates and Improvements to OBS and ASM

Met Office 14.1 - Equatorial Pressure correction
Motivation: The pressure correction code exists to maintain balance in equatorial regions as data are assimilated
Status : The code already exits, but still needs to be reviewed
Main tasks : Check the existing code and implement in the appropriate NEMO version
Science Reviewer: NEMOVAR community
System Reviewer: NEMOVAR community
Deadline: October 2014 (likely sooner since there is little to do)
Priority: Medium
Depends on: N/A
Principal Investigator : Dan Lea (daniel.lea@…)

Met_Office-14.2 - Sea ice increments
Motivation: Implement code used to apply seaice increments; this is used for data assimilation of ice variables. It will also be necessary to make sure the code is compatible with cice
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer: NEMOVAR community
System Reviewer: NEMOVAR community
Deadline: October 2014 (likely sooner since there is little to do)
Priority: Medium
Depends on: N/A
Principal Investigator : Dan Lea (daniel.lea@…)

Met_Office-14.3 - Temperature Criterion Mixed Layer
Motivation: A new mixed layer definition based on a temperature criterion
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer: Paolo Oddo
System Reviewer: Paolo Oddo
Deadline: October 2014 (likely sooner since there is little to do)
Priority: Medium
Depends on: N/A
Principal Investigator : James While (james.while@…)

Met_Office-14.4 - Observation operator for profiles for use with all vertical coordinates (i.e. generalised vertical interpolation)
Motivation: This code is necessary to get profile minus model differences in any model not using vertical z-coordinates
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer: NEMOVAR community
System Reviewer: NEMOVAR community
Deadline: October 2014 (likely sooner since there is little to do)
Priority: Medium
Depends on: N/A
Principal Investigator : James While (james.while@…)

Met_Office-14.5 - SST bias correction
Motivation: This code reads in a bias field and uses it to correct SST observations before they are passed to the obs operator. It is necessary for successful SST assimilation
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer: NEMOVAR community
System Reviewer: NEMOVAR community
Deadline: October 2014 (likely sooner since there is little to do)
Priority: Medium
Depends on: N/A
Principal Investigator : James While (james.while@…)

Met_Office-14.6 - ADCP data to be included in OBS routines
Motivation: Reads current data from ADCP files for comparison with model data
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer: NEMOVAR community
System Reviewer: NEMOVAR community
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : James While (james.while@…)

Met_Office-14.7 - Read and process gridded seaice and sst data
Motivation: This code would allow us to process gridded SST and seaice data through the observation operator
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer: NEMOVAR community
System Reviewer: NEMOVAR community
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : James While (james.while@…)

Met_Office-14.8 - Netcdf4 compression of feedback files
Motivation: This code would allow us to more easily store feedback files at a higher compression
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer: NEMOVAR community
System Reviewer: NEMOVAR community
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : James While (james.while@…)

Met_Office-14.9 - Add record information to SLA data
Motivation: Allows storage of record information for SLA data
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer: NEMOVAR community
System Reviewer: NEMOVAR community
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : James While (james.while@…)

Met_Office-14.10 - Addition of Satellite Surface Salinity data and Microwave SST data to OBS routines
Motivation: Allow comparison of satellite surface salinity and microwave SST data through the OBS routines.
Status : The code exits in a local branch at vn3.4
Main tasks : Check the existing code and implement in the appropriate NEMO version, test and document
Science Reviewer: NEMOVAR community
System Reviewer: NEMOVAR community
Deadline: October 2014
Priority: Medium
Depends on: N/A
Principal Investigator : Dan Lea (daniel.lea@…) (work to be done with Niall McConnell and Jonah Roberts Jones)?

Met_Office-14.11 - Implement assimilation interface SETTE test
Motivation: Create a SETTE test configuration which includes observation operator and increments tests, to ensure that future NEMO developments do not break OBS and ASM.
Status : Not started
Main tasks :

  1. Add some observations and increments to the standard input files.
  2. Confirm that the text output will indicate the correct functioning of the OBS and ASM.
  3. If not add additional diagnostic text output.

Science Reviewer:Simona Flavoni Cadot
System Reviewer:Simona Flavoni Cadot
Deadline: October 2014 (likely sooner since there is little to do)
Priority: Medium
Depends on: N/A
Principal Investigator : Dan Lea (daniel.lea@…)

Met_Office-14.12 - Improvements to offline OBS operator
Motivation: Limit duplication of code, and move to using as much of the online code as possible.
Status :To be done during alpha testing of 3.6
Main tasks :
Science Reviewer:Clement Bricaud
System Reviewer:Clement Bricaud
Deadline: Feb 2013
Priority: Medium
Depends on: N/A
Principal Investigator : Andy Ryan

Met_Office-15 - Conribute to AGRIF working group

Motivation: To interact productively with AGRIF working group
Main tasks : Firstly to deal with compile issues so AGRIF can be built on Met Office architecture. Further work to be decided
Science Reviewer: N/A
System Reviewer: N/A
Deadline: N/A
Priority: Medium
Depends on: N/A
Principal Investigator : Daley Calvert (daley.calvert@…)

Met_Office-16 - Overflow Parameterisations

Motivation: Currently the model fails to properly capture dense water formation and the asociated flows over sills, especially in z coordidnate models. This could be improved by parameterising the process
Status : Some investigative work has begun
Main tasks : To assess the various options available with a view to implement a parameterisation in NEMO in future
Science Reviewer: N/A
System Reviewer: N/A
Deadline: Ongoing, possibly November 2015
Priority: Medium
Depends on: N/A
Principal Investigator : Tim Graham (tim.graham@…)