Changeset 11112 for NEMO/trunk
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- 2019-06-14T15:57:28+02:00 (5 years ago)
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NEMO/trunk/doc/latex/NEMO/subfiles/chap_CONFIG.tex
r10442 r11112 18 18 \label{sec:CFG_intro} 19 19 20 The purpose of this part of the manual is to introduce the \NEMO reference configurations.20 The purpose of this part of the manual is to introduce the NEMO reference configurations. 21 21 These configurations are offered as means to explore various numerical and physical options, 22 22 thus allowing the user to verify that the code is performing in a manner consistent with that we are running. … … 24 24 The reference configurations also provide a sense for some of the options available in the code, 25 25 though by no means are all options exercised in the reference configurations. 26 Configuration is defined manually through the \textit{namcfg} namelist variables. 26 27 27 28 %------------------------------------------namcfg---------------------------------------------------- … … 36 37 \label{sec:CFG_c1d} 37 38 38 BE careful: to be re-written according to suppression of jpizoom and jpjzoom !!!! 39 40 The 1D model option simulates a stand alone water column within the 3D \NEMO system. 39 The 1D model option simulates a stand alone water column within the 3D NEMO system. 41 40 It can be applied to the ocean alone or to the ocean-ice system and can include passive tracers or a biogeochemical model. 42 41 It is set up by defining the position of the 1D water column in the grid 43 (see \textit{ CONFIG/SHARED/namelist\_ref}).42 (see \textit{cfgs/SHARED/namelist\_ref}). 44 43 The 1D model is a very useful tool 45 44 \textit{(a)} to learn about the physics and numerical treatment of vertical mixing processes; … … 50 49 \textit{(d)} to produce extra diagnostics, without the large memory requirement of the full 3D model. 51 50 52 The methodology is based on the use of the zoom functionality over the smallest possible domain: 53 a 3x3 domain centered on the grid point of interest, with some extra routines. 54 There is no need to define a new mesh, bathymetry, initial state or forcing, 55 since the 1D model will use those of the configuration it is a zoom of. 56 The chosen grid point is set in \textit{\ngn{namcfg}} namelist by 57 setting the \np{jpizoom} and \np{jpjzoom} parameters to the indices of the location of the chosen grid point. 51 The methodology is based on the configuration of the smallest possible domain: 52 a 3x3 domain with 75 vertical levels. 58 53 59 54 The 1D model has some specifies. First, all the horizontal derivatives are assumed to be zero, 60 55 and second, the two components of the velocity are moved on a $T$-point. 61 Therefore, defining \key{c1d} changes five mainthings in the code behaviour:56 Therefore, defining \key{c1d} changes some things in the code behaviour: 62 57 \begin{description} 63 58 \item[(1)] 64 the lateral boundary condition routine (\rou{lbc\_lnk}) set the value of the central column of65 the 3x3 domain is imposed over the whole domain;66 \item[(3)]67 a call to \rou{lbc\_lnk} is systematically done when reading input data (\ie in \mdl{iom});68 \item[(3)]69 59 a simplified \rou{stp} routine is used (\rou{stp\_c1d}, see \mdl{step\_c1d} module) in which 70 60 both lateral tendancy terms and lateral physics are not called; 71 \item[( 4)]61 \item[(2)] 72 62 the vertical velocity is zero 73 63 (so far, no attempt at introducing a Ekman pumping velocity has been made); 74 \item[( 5)]64 \item[(3)] 75 65 a simplified treatment of the Coriolis term is performed as $U$- and $V$-points are the same 76 66 (see \mdl{dyncor\_c1d}). 77 67 \end{description} 78 All the relevant \textit{\_c1d} modules can be found in the NEMOGCM/NEMO/OPA\_SRC/C1D directory of79 the \NEMO distribution.68 All the relevant \textit{\_c1d} modules can be found in the src/OCE/C1D directory of 69 the NEMO distribution. 80 70 81 71 % to be added: a test case on the yearlong Ocean Weather Station (OWS) Papa dataset of Martin (1985) … … 88 78 89 79 The ORCA family is a series of global ocean configurations that are run together with 90 the LIM sea-ice model (ORCA-LIM) and possibly with PISCES biogeochemical model (ORCA-LIM-PISCES), 91 using various resolutions. 92 An appropriate namelist is available in \path{CONFIG/ORCA2_LIM3_PISCES/EXP00/namelist_cfg} for ORCA2. 80 the SI3 model (ORCA-ICE) and possibly with PISCES biogeochemical model (ORCA-ICE-PISCES). 81 An appropriate namelist is available in \path{cfgs/ORCA2_ICE_PISCES/EXPREF/namelist_cfg} for ORCA2. 93 82 The domain of ORCA2 configuration is defined in \ifile{ORCA\_R2\_zps\_domcfg} file, 94 this file is available in tar file in the wiki of NEMO: \\ 95 https://forge.ipsl.jussieu.fr/nemo/wiki/Users/ReferenceConfigurations/ORCA2\_LIM3\_PISCES \\ 83 this file is available in tar file on the NEMO community zenodo platform: \\ 84 https://doi.org/10.5281/zenodo.2640723 85 96 86 In this namelist\_cfg the name of domain input file is set in \ngn{namcfg} block of namelist. 97 87 … … 119 109 \label{subsec:CFG_orca_grid} 120 110 121 The ORCA grid is a tripolar isbased on the semi-analytical method of \citet{Madec_Imbard_CD96}.111 The ORCA grid is a tripolar grid based on the semi-analytical method of \citet{Madec_Imbard_CD96}. 122 112 It allows to construct a global orthogonal curvilinear ocean mesh which has no singularity point inside 123 113 the computational domain since two north mesh poles are introduced and placed on lands. … … 158 148 159 149 % ------------------------------------------------------------------------------------------------------------- 160 % ORCA- LIM(-PISCES) configurations150 % ORCA-ICE(-PISCES) configurations 161 151 % ------------------------------------------------------------------------------------------------------------- 162 152 \subsection{ORCA pre-defined resolution} … … 199 189 The ORCA\_R2 configuration has the following specificity: starting from a 2\deg~ORCA mesh, 200 190 local mesh refinements were applied to the Mediterranean, Red, Black and Caspian Seas, 201 so that the resolution is 1\deg \time 1\degthere.191 so that the resolution is 1\deg~ there. 202 192 A local transformation were also applied with in the Tropics in order to refine the meridional resolution up to 203 0.5\deg at the Equator.193 0.5\deg~ at the Equator. 204 194 205 195 The ORCA\_R1 configuration has only a local tropical transformation to refine the meridional resolution up to … … 211 201 For ORCA\_R1 and R025, setting the configuration key to 75 allows to use 75 vertical levels, otherwise 46 are used. 212 202 In the other ORCA configurations, 31 levels are used 213 (see \autoref{tab:orca_zgr} %\sfcomment{HERE I need to put new table for ORCA2 values} and \autoref{fig:zgr}).214 215 Only the ORCA\_R2 is provided with all its input files in the \NEMO distribution.216 It is very similar to that used as part of the climate model developed at IPSL for the 4th IPCC assessment of217 climate change (Marti et al., 2009).218 It is also the basis for the \NEMO contribution to the Coordinate Ocean-ice Reference Experiments (COREs)219 documented in \citet{Griffies_al_OM09}.203 (see \autoref{tab:orca_zgr}). %\sfcomment{HERE I need to put new table for ORCA2 values} and \autoref{fig:zgr}). 204 205 Only the ORCA\_R2 is provided with all its input files in the NEMO distribution. 206 %It is very similar to that used as part of the climate model developed at IPSL for the 4th IPCC assessment of 207 %climate change (Marti et al., 2009). 208 %It is also the basis for the \NEMO contribution to the Coordinate Ocean-ice Reference Experiments (COREs) 209 %documented in \citet{Griffies_al_OM09}. 220 210 221 211 This version of ORCA\_R2 has 31 levels in the vertical, with the highest resolution (10m) in the upper 150m … … 227 217 This \citet{Large_Yeager_Rep04} dataset is available through 228 218 the \href{http://nomads.gfdl.noaa.gov/nomads/forms/mom4/CORE.html}{GFDL web site}. 229 The "normal year" of \citet{Large_Yeager_Rep04} has been chosen of the \NEMO distribution since release v3.3.219 The "normal year" of \citet{Large_Yeager_Rep04} has been chosen of the NEMO distribution since release v3.3. 230 220 231 221 ORCA\_R2 pre-defined configuration can also be run with an AGRIF zoom over the Agulhas current area 232 (\key{agrif} defined) and, by setting the appropriate variables, see \path{ CONFIG/SHARED/namelist_ref}.222 (\key{agrif} defined) and, by setting the appropriate variables, see \path{cfgs/SHARED/namelist_ref}. 233 223 A regional Arctic or peri-Antarctic configuration is extracted from an ORCA\_R2 or R05 configurations using 234 224 sponge layers at open boundaries. … … 248 238 and their contribution to the large scale circulation. 249 239 240 The GYRE configuration run together with the PISCES biogeochemical model (GYRE-PISCES). 250 241 The domain geometry is a closed rectangular basin on the $\beta$-plane centred at $\sim$ 30\deg{N} and 251 242 rotated by 45\deg, 3180~km long, 2120~km wide and 4~km deep (\autoref{fig:MISC_strait_hand}). … … 266 257 The GYRE configuration is set like an analytical configuration. 267 258 Through \np{ln\_read\_cfg}\forcode{ = .false.} in \textit{namcfg} namelist defined in 268 the reference configuration \path{ CONFIG/GYRE/EXP00/namelist_cfg}259 the reference configuration \path{cfgs/GYRE_PISCES/EXPREF/namelist_cfg} 269 260 analytical definition of grid in GYRE is done in usrdef\_hrg, usrdef\_zgr routines. 270 261 Its horizontal resolution (and thus the size of the domain) is determined by 271 262 setting \np{nn\_GYRE} in \ngn{namusr\_def}: \\ 263 272 264 \np{jpiglo} $= 30 \times$ \np{nn\_GYRE} + 2 \\ 265 273 266 \np{jpjglo} $= 20 \times$ \np{nn\_GYRE} + 2 \\ 267 274 268 Obviously, the namelist parameters have to be adjusted to the chosen resolution, 275 see the Configurations pages on the NEMO web site ( Using NEMO\/Configurations).269 see the Configurations pages on the NEMO web site (NEMO Configurations). 276 270 In the vertical, GYRE uses the default 30 ocean levels (\jp{jpk}\forcode{ = 31}) (\autoref{fig:zgr}). 277 271 … … 281 275 even though the physical integrity of the solution can be compromised. 282 276 Benchmark is activate via \np{ln\_bench}\forcode{ = .true.} in \ngn{namusr\_def} in 283 namelist \path{ CONFIG/GYRE/EXP00/namelist_cfg}.277 namelist \path{cfgs/GYRE_PISCES/EXPREF/namelist_cfg}. 284 278 285 279 %>>>>>>>>>>>>>>>>>>>>>>>>>>>> … … 304 298 The AMM, Atlantic Margins Model, is a regional model covering the Northwest European Shelf domain on 305 299 a regular lat-lon grid at approximately 12km horizontal resolution. 306 The appropriate \textit{\&namcfg} namelist is available in \textit{ CONFIG/AMM12/EXP00/namelist\_cfg}.300 The appropriate \textit{\&namcfg} namelist is available in \textit{cfgs/AMM12/EXPREF/namelist\_cfg}. 307 301 It is used to build the correct dimensions of the AMM domain. 308 302
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