= ORCA2_LIM3_PISCES = Last edition: '''[[Wikinfo(changed_ts)]]''' by '''[[Wikinfo(changed_by)]]''' [[PageOutline]] == Configuration Description == ORCA is the generic name given to global ocean configurations. Its specificity lies on the horizontal curvilinear mesh used to overcome the North Pole singularity found for geographical meshes. LIM (Louvain-la-Neuve sea-ice model, multi-category model LIM3 is used) is a thermodynamic-dynamic sea ice model specifically designed for climate studies. A brief description of the model is given here. Space-time domain - The horizontal resolution available through the standard configuration is ORCA2. it is based on a 2 degrees Mercator mesh, (i.e. variation of meridian scale factor as cosinus of the latitude). In the northern hemisphere the mesh has two poles so that the ratio of anisotropy is nearly one everywhere. The mean grid spacing is about 2/3 of the nominal value: for example it is 1.3 degrees for ORCA2. Other resolutions (ORCA4, ORCA05 and ORCA025) are running or under development within specific projects. In the coarse resolution version (i.e. ORCA2 and ORCA4) the meridional grid spacing is increased near the equator to improve the equatorial dynamics. Figures in pdf format of mesh and bathymetry can be found and downloaded here. The sea-ice model runs on the same grid.[[BR]] - The vertical domain spreads from the surface to a depth of 5000m. There are 31 levels, with 10 levels in the top 100m. The vertical mesh is deduced from a mathematical function of z ([https://forge.ipsl.jussieu.fr/nemo/attachment//wiki/Users/ReferenceConfigurations/ORCA2_LIM3_PISCES/ORCAgrid.Madec_Imbard_1996.pdf Madec and Imbard 1996] ). The ocean surface corresponds to the w-level k=1, and the ocean bottom to the w-level k=31. The last T-level (k=31) is thus always in the ground.The depths of the vertical levels and the associated scale factors can be viewed .Higher vertical resolution is used in ORCA025 and ORCA12 ( see [https://www.drakkar-ocean.eu DRAKKAR ] project). [[BR]] - The time step depends on the resolution. It is 1h36' for ORCA2 so that there is 15 time steps in one day.[[BR]] Ocean Physics (for ORCA2) -horizontal diffusion on momentum: the eddy viscosity coefficient depends on the geographical position. It is taken as 40000. m2/s, reduced in the equator regions (2000 m2/s) excepted near the western boundaries.[[BR]] -isopycnal diffusion on tracers: the diffusion acts along the isopycnal surfaces (neutral surface) with a eddy diffusivity coefficient of 2000. m2/s.[[BR]] -Eddy induced velocity parametrization with a coefficient that depends on the growth rate of baroclinic instabilities (it usually varies from 15 m2/s to 3000m2/s).[[BR]] -lateral boundary conditions : zero fluxes of heat and salt and no-slip conditions are applied through lateral solid boundaries.[[BR]] -bottom boundary condition : zero fluxes of heat and salt are applied through the ocean bottom. The Beckmann [19XX] simple bottom boundary layer parameterization is applied along continental slopes. A linear friction is applied on momentum.[[BR]] -convection: the vertical eddy viscosity and diffusivity coefficients are increased to 1 m2/s in case of static instability.[[BR]] -forcings: the ocean receives heat, freshwater, and momentum fluxes from the atmosphere and/or the sea-ice. The solar radiation penetrates the top meters of the ocean. The downward irradiance I(z) is formulated with two extinction coefficients [Paulson and Simpson, 1977], whose values correspond to a Type I water in Jerlov's classification (i.e the most transparent water)[[BR]] ORCA2_LIM3_PISCES is a reference configuration with the following characteristics: -global ocean configuration,[[BR]] -based on a tri-polar ORCA grid, with a 2° horizontal resolution,[[BR]] -31 vertical levels,[[BR]] -forced with climatological surface fields,[[BR]] -coupled to the sea-ice model [http://www.geosci-model-dev.net/8/2991/2015/ LIM ] [[BR]] -coupled to TOP passive tracer transport module and [http://www.geosci-model-dev.net/8/2465/2015/ PISCES ] biogeochemichal model.[[BR]] == AGRIF demonstrator == From the ORCA2_LIM3_PISCES configuration, a demonstrator using AGRIF nesting can be activated. It includes the global ORCA2_LIM3_PISCES configuration and a nested grid in the Agulhas region. To set up this configuration, after extracting NEMO :[[BR]] -Build your AGRIF configuration directory from ORCA2_LIM3_PISCES, with the key_agrif cpp key activated:[[BR]] {{{ cd NEMOGCM/CONFIG ; ./makenemo -r ORCA2_LIM3_PISCES -n AGRIF add_key "key_agrif" }}} -Using the ORCA2_LIM3_PISCES input files and namelist, AGRIF test configuration is ready to run[[BR]] === Configuration Inputs === Input files can be downloaded from the DODS server of [http://prodn.idris.fr/thredds/catalog/ipsl_public/reee451/NEMO/catalog.html IDRIS ], (CAUTION different versions are available):[[BR]] [http://prodn.idris.fr/thredds/catalog/ipsl_public/rgzi011/NEMO/catalog.html HERE] : ORCA2_LIM_nemo_v3.7.tar and ORCA2_LIM_PISCES_v3.7.tar are dedicated to NEMO trunk version [[BR]] ( TO BE CHANGED: ORCA2_LIM_nemo_v3.7.tar and INPUTS_PISCES_v3.6st.tar are dedicated to NEMO trunk version) [[BR]] ORCA2_LIM_nemo_v3.6.tar and INPUTS_PISCES_v3.6st.tar are dedicated to NEMO version nemo_v_3.6 It includes a README file with files description[[BR]] ORCA2_LIM_nemo_v3.4.tar and INPUTS_PISCES_v3.4.tar are dedicated to NEMO version tagged nemo_v_3.5 and nemo_v3.4 It includes a README file with files description[[BR]] ORCA2_LIM_nemo_v3.3.tar and INPUTS_PISCES_v3.tar are dedicated to NEMO version tagged nemo_v3.3 It includes a README file with files description[[BR]] In addition, PISCES input files are also needed (CAUTION choose the one corresponding to your code version): INPUTS_PISCES_v3.6.tar INPUTS_PISCES_v3.5.tar INPUTS_PISCES_v3.4.tar Brief description of files in ORCA2_LIM_nemo_v3.2.tar file :[[BR]] ahmcoef and ahmcoef.nc: 2D integer used to increase the horizontal eddy viscosity along western boundary in the equatorial strip 20°S-20°N[[BR]] bathy_level.nc: the bathymetry in levels (Z-coordinates)[[BR]] bathy_meter.nc and bathy_updated.nc : the bathymetry in meters (Partial-cells)[[BR]] chlorophyll.nc : used for solar penetration scheme (traqsr) [[BR]] coordinates.nc: scale factors e(12)(tuvwf) and geographical glam[tuvwf] and gphi[tuvwf] location of each grid points T- U- V- W- and F-[[BR]] data_1m_potential_temperature_nomask.nc: Levitus climatological potential temperature[[BR]] data_1m_salinity_nomask.nc: Levitus climatological salinity[[BR]] EMPave_old.dat: fresshwater correction flux[[BR]] geothermal_heating.nc: constant geothermal heat flux[[BR]] K1rowdrg.nc, M2rowdrg.nc, mask_itf.nc: parametrization of vertical mixing due to tidal mixing (key zdftmx) [[BR]] ncar_precip.15JUNE2009_fill.nc, ncar_rad.15JUNE2009_fill.nc, q_10.15JUNE2009_fill.nc, t_10.15JUNE2009_fill.nc, u_10.15JUNE2009_fill.nc, v_10.15JUNE2009_fill.nc; forcing data set for CORE bulk formulae[[BR]] weights_core_orca2_bicubic_noc.nc and weights_core_orca2_bilinear_noc.nc: weight ( used in interpolation-on-the-fly) to interpolate forcing fields on the model grid[[BR]] resto.nc: damping zones for T&S( tradmp) [[BR]] More informations on input and configuration files in NEMO [ ?????? reference manual ] ON-THE-FLY Interpolation NEMO allows to use the interpolation on the fly option allowing to interpolate input data during the run. If you want to use this option you need files giving informations on weights, which have been created.[[BR]] You can find here 2 weights files bil_weights for scalar field (bilinear interpolation) and bic_weights for vector field (bicubic interpolation) [http://prodn.idris.fr/thredds/catalog/ipsl_public/reee512/ORCA2_ONTHEFLY/WEIGHTS/catalog.html Weights ] files.[[BR]] The data files used are COREII forcing (downloaded from http://data1.gdfl.noaa.gov/nomads/forms/mom4/COREv2) extrapolated on continents, ready to be used for on the fly option: [http://prodn.idris.fr/thredds/catalog/ipsl_public/reee512/ORCA2_ONTHEFLY/FILLED_FILES/catalog.html COREII ] forcing files extrapolated on continents[[BR]] === Configuration Outputs === To compare with your experiments, Outputs and Restarts files are available for ORCA2_LIM3_PISCES and its previous versions ORCA2_LIM2, for different releases: ==== ORCA2_LIM2_PISCES, v3_6 STABLE revision 5618 ==== To download this version: {{{ svn --username "mylogin" co -r 5618 http://forge.ipsl.jussieu.fr/nemo/svn/branches/2015/nemo_v3_6_STABLE/NEMOGCM }}} -Climatological reference (3000 years) :[[BR]] -download [http://prodn.idris.fr/thredds/catalog/ipsl_public/rgzi002/ORCA2_LIM3_PISCES/OR2L3P-V1/catalog.html output], [http://prodn.idris.fr/thredds/catalog/ipsl_public/rgzi002/ORCA2_LIM3_PISCES/OR2L3P-V1/RESTART/catalog.html restart] files from the DODS server of IDRIS [[BR]] -list of cpp keys : {{{ bld::tool:: fppkeys key_trabbl key_lim3 key_vvl key_dynspg_ts key_diaeiv key_ldfslp key_traldf_c2d key_traldf_eiv key_dynldf_c3d key_zdftke key_zdfddm key_zdftmx key_iomput key_mpp_mpi key_top key_pisces }}} -forcing COREII [[BR]] -all details (plots, time series, namelist, namelist_ice, iodef.xml file and cpp keys) of run of reference are available from the [http://prodn.idris.fr/thredds/catalog/ipsl_public/rgzi002/ORCA2_LIM3_PISCES/OR2L3P-V1/NAMELISTS/catalog.html here] [[BR]] ==== ORCA2_LIM2_PISCES - Preliminary version of v3_6 revision 4334 ==== To download this version: {{{ svn --username "mylogin" co -r 4334 http://forge.ipsl.jussieu.fr/nemo/svn/branches/2013/dev_MERGE_2013/NEMOGCM }}} -Climatological reference (500 years) :[[BR]] -download [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/reference_trunk_v36_Output/catalog.html output], [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/reference_trunk_v36_Restart/catalog.html restart] files from the DODS server[[BR]] -list of cpp keys : {{{ bld::tool::fppkeys key_trabbl key_lim2 key_dynspg_flt key_diaeiv key_ldfslp key_traldf_c2d key_traldf_eiv key_dynldf_c3d key_zdftke key_zdfddm key_zdftmx key_top key_pisces key_iomput key_mpp_mpi key_nosignedzero }}} -forcing COREII [[BR]] -all details (plots, time series, namelist, namelist_ice, iodef.xml file and cpp keys) of run of reference are available from the [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/reference_trunk_v36/catalog.html here][[BR]] ==== ORCA2_LIM2_PISCES, For developers only :( intermediate v3_5) revision 3856 ==== -Climatological reference (500 years) :[[BR]] -download [http://prodn.idris.fr/thredds/catalog/ipsl_public/rfry154/reference_trunk_v35_Output/catalog.html output], [http://prodn.idris.fr/thredds/catalog/ipsl_public/rfry154/reference_trunk_v35_Restart/catalog.html restart] files from the DODS server[[BR]] -list of cpp keys : {{{ bld::tool::fppkeys fppkeys key_trabbl key_orca_r2 key_lim2 key_dynspg_flt key_diaeiv key_ldfslp key_traldf_c2d key_traldf_eiv key_dynldf_c3d key_zdftke key_zdfddm key_zdftmx key_top key_pisces key_iomput key_mpp_mpi }}} -forcing COREII [[BR]] -all details (plots, time series, namelist, namelist_ice, iodef.xml file and cpp keys) of run of reference are available from the [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/reference_trunk_v35/catalog.html here][[BR]] ==== ORCA2_LIM2_PISCES, nemo 3_4_STABLE revision 4636 ==== To download this version: {{{ svn --username "mylogin" co -r 4636 http://forge.ipsl.jussieu.fr/nemo/svn/branches/2012/dev_v3_4_STABLE_2012 }}} -Climatological reference (300 years) :[[BR]] download [http://prodn.idris.fr/thredds/catalog/ipsl_public/reee451/reference_trunk_v34_Output/catalog.html output],[http://prodn.idris.fr/thredds/catalog/ipsl_public/reee451/reference_trunk_v34_Restart/catalog.html restart] files from the DODS server[[BR]] -list of cpp keys : {{{ bld::tool::fppkeys fppkeys key_trabbl key_orca_r2 key_lim2 key_dynspg_flt key_diaeiv key_ldfslp key_traldf_c2d key_traldf_eiv key_dynldf_c3d key_zdftke key_zdfddm key_top key_pisces key_iomput key_mpp_mpi }}} -forcing COREII[[BR]] -all details (plots, time series, namelist, namelist_ice, iodef.xml file and cpp keys) of run of reference are available from the [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/reference_dev_v34_stable/catalog.html here][[BR]] ==== ORCA2_LIM2, nemo tag v3_3 ==== -Climatological reference (100 years) : -download output, restart files from the [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/reference_tag_33/Output_Restart/catalog.html DODS] server[[BR]] -list of cpp keys : {{{ bld::tool::fppkeys key_trabbl key_vectopt_loop key_orca_r2 key_lim2 key_dynspg_flt key_diaeiv key_ldfslp key_traldf_c2d key_traldf_eiv key_dynldf_c3d key_dtatem key_dtasal key_tradmp key_zdftke key_zdfddm key_zdftmx key_iomput key_nproci=1 key_nprocj=1 }}} -forcing COREII [[BR]] -all details (plots, time series, namelist, namelist_ice, iodef.xml file and cpp keys) of run of reference are available from [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/reference_tag_33/catalog.html here] [[BR]] ==== ORCA2_LIM2, nemo tag v3_3 (with vp rheology) ==== -Climatological reference (100 years) : -download output, restart files from the [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/reference_tag_33_vp/Output_Restart/catalog.html DODS] server[[BR]] -list of cpp keys : {{{ bld::tool::fppkeys key_trabbl key_vectopt_loop key_orca_r2 key_lim2 key_dynspg_flt key_diaeiv key_ldfslp key_traldf_c2d key_traldf_eiv key_dynldf_c3d key_dtatem key_dtasal key_tradmp key_zdftke key_zdfddm key_zdftmx key_iomput key_nproci=1 key_nprocj=1 key_lim2_vp }}} -forcing COREII [[BR]] -all details (plots, time series (to be reviewed for new variable names: 9/2/2011), namelist, namelist_ice, iodef.xml file and cpp keys) of run of reference are available [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/reference_tag_33_vp/catalog.html here][[BR]] ==== ORCA2_LIM2, nemo tag v3_2_2 ==== -Climatological reference (100 years) :[[BR]] -download output, restart files from the [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/reference_tag_322/Output_Restart/catalog.html DODS] server[[BR]] -list of cpp keys : {{{ P_P = key_trabbl_dif key_vectopt_loop key_vectopt_memory key_orca_r2 key_lim2 key_dynspg_flt key_diaeiv key_ldfslp key_traldf_c2d key_traldf_eiv key_dynldf_c3d key_dtatem key_dtasal key_tradmp key_trabbc key_zdftke key_zdfddm key_diahth key_iomput }}} -forcing CLIO [[BR]] -all details (plots, time series, namelist, namelist_ice, iodef.xml file and cpp keys) of run of reference are available [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/reference_tag_322/catalog.html here] [[BR]] ==== ORCA2_LIM2, nemo v3_2 ( revision number 1803) ==== -Climatological reference (2000 years) :[[BR]] -download output, restart files from the [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/REFERENCE_CLIMATO/tmx_2000/catalog.html DODS] server [[BR]] -all details (namelist, plots, time series) of run of reference are available in this [https://forge.ipsl.jussieu.fr/nemo/wiki/core2_cmip wiki] page[[BR]] -NOTE : run of example without Tidal Mixing is available on [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/REFERENCE_CLIMATO/core2000/catalog.html DODS] [[BR]] -Inter-annual reference (60 years repeted 3 times : 1948 - 2007) : [[BR]] -download output, restart files from the [http://prodn.idris.fr/thredds/catalog/ipsl_public/romr009/REFERENCE_INTERAN/tmx_int3/catalog.html DODS ] server [[BR]] -all details (namelist, plots, time series) of run of reference are available in this [https://forge.ipsl.jussieu.fr/nemo/wiki/core2_cmip wiki] page[[BR]]