/[MITgcm]/MITgcm/model/inc/PARAMS.h
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revision 1.1.1.1 by cnh, Wed Apr 22 19:15:31 1998 UTC revision 1.102 by adcroft, Sat Feb 7 16:27:13 2004 UTC
# Line 1  Line 1 
1  C $Id$  C $Header$
2    C $Name$
3  C  C
4  C     /==========================================================\  CBOP
5  C     | PARAMS.h                                                 |  C    !ROUTINE: PARAMS.h
6  C     | o Header file defining model "parameters".               |  C    !INTERFACE:
7  C     |==========================================================|  C    include PARAMS.h
8  C     | The values from the model's standard input file are      |  C    !DESCRIPTION: \bv
9  C     | stored into the variables held here. Notes describing    |  C     *==========================================================*
10  C     | the parameters can also be found here.                   |  C     | PARAMS.h                                                  
11  C     \==========================================================/  C     | o Header file defining model "parameters".                
12    C     *==========================================================*
13    C     | The values from the model standard input file are        
14    C     | stored into the variables held here. Notes describing    
15    C     | the parameters can also be found here.                    
16    C     *==========================================================*
17    C     \ev
18    CEOP
19    
20    C     Macros for special grid options
21    #include "PARAMS_MACROS.h"
22    
23  C--   Contants  C--   Contants
 C     nOBands - No. of offline data time bands  
       INTEGER nOBands  
       PARAMETER ( nOBands = 12 )  
24  C     Useful physical values  C     Useful physical values
25        Real*8 PI        Real*8 PI
26        PARAMETER ( PI    = 3.14159265358979323844D0   )        PARAMETER ( PI    = 3.14159265358979323844D0   )
27        Real*8 deg2rad        Real*8 deg2rad
28        PARAMETER ( deg2rad = 2.D0*PI/360.D0           )        PARAMETER ( deg2rad = 2.D0*PI/360.D0           )
29    
30    C     Symbolic values
31    C     precXXXX :: Used to indicate what precision to use for
32    C                dumping model state.
33          INTEGER precFloat32
34          PARAMETER ( precFloat32 = 32 )
35          INTEGER precFloat64
36          PARAMETER ( precFloat64 = 64 )
37    C     UNSET_xxx :: Used to indicate variables that have not been given a value
38          Real*8 UNSET_FLOAT8
39          PARAMETER ( UNSET_FLOAT8 = 1.234567D5 )
40          Real*4 UNSET_FLOAT4
41          PARAMETER ( UNSET_FLOAT4 = 1.234567E5 )
42          _RL    UNSET_RL    
43          PARAMETER ( UNSET_RL     = 1.234567D5 )
44          _RS    UNSET_RS    
45          PARAMETER ( UNSET_RS     = 1.234567E5 )
46          INTEGER UNSET_I
47          PARAMETER ( UNSET_I      = 123456789  )
48    
49    C     Checkpoint data
50          INTEGER maxNoChkptLev
51          PARAMETER ( maxNoChkptLev = 2 )
52    
53  C--   COMMON /PARM_C/ Character valued parameters used by the model.  C--   COMMON /PARM_C/ Character valued parameters used by the model.
54  C     oBandId  - Offline dataset identifiers for different periods.  C     checkPtSuff :: List of checkpoint file suffices
55        COMMON /PARM_C/ oBandId  C     bathyFile   :: File containing bathymetry. If not defined bathymetry
56        CHARACTER*3 oBandId(nOBands)  C                   is taken from inline function.
57    C     topoFile    :: File containing the topography of the surface (unit=m)
58    C                   (mainly used for the atmosphere = ground height).
59    C     hydrogThetaFile :: File containing initial hydrographic data for potential
60    C                       temperature.
61    C     hydrogSaltFile  :: File containing initial hydrographic data for salinity.
62    C     zonalWindFile   :: File containing zonal wind data
63    C     meridWindFile   :: File containing meridional wind data
64    C     thetaClimFile   :: File containing theta climataology used
65    C                       in relaxation term -lambda(theta-theta*)
66    C     saltClimFile    :: File containing salt climataology used
67    C                       in relaxation term -lambda(salt-salt*)
68    C     surfQfile       :: File containing surface heat flux
69    C     surfQswfile     :: File containing surface shortwave radiation
70    C     dQdTfile        :: File containing thermal relaxation coefficient
71    C     EmPmRfile       :: File containing surface fresh water flux
72    C     pLoadFile       :: File containing pressure loading
73    C     buoyancyRelation :: Flag used to indicate which relation to use to
74    C                        get buoyancy.
75    C     eosType         :: choose the equation of state:
76    C                        LINEAR, POLY3, UNESCO, JMD95Z, JMD95P, MDJWF, IDEALGAS
77          COMMON /PARM_C/ checkPtSuff,
78         &                bathyFile, topoFile,
79         &                hydrogThetaFile, hydrogSaltFile,
80         &                zonalWindFile, meridWindFile, thetaClimFile,
81         &                saltClimFile, buoyancyRelation,
82         &                EmPmRfile, surfQfile, surfQswfile,
83         &                uVelInitFile, vVelInitFile, pSurfInitFile,
84         &                dQdTfile, ploadFile,
85         &                eosType, pickupSuff,
86         &                mdsioLocalDir
87          CHARACTER*(5) checkPtSuff(maxNoChkptLev)
88          CHARACTER*(MAX_LEN_FNAM) bathyFile, topoFile
89          CHARACTER*(MAX_LEN_FNAM) hydrogThetaFile
90          CHARACTER*(MAX_LEN_FNAM) hydrogSaltFile
91          CHARACTER*(MAX_LEN_FNAM) zonalWindFile
92          CHARACTER*(MAX_LEN_FNAM) meridWindFile
93          CHARACTER*(MAX_LEN_FNAM) thetaClimFile
94          CHARACTER*(MAX_LEN_FNAM) saltClimFile
95          CHARACTER*(MAX_LEN_FNAM) surfQfile
96          CHARACTER*(MAX_LEN_FNAM) surfQswfile
97          CHARACTER*(MAX_LEN_FNAM) EmPmRfile
98          CHARACTER*(MAX_LEN_FNAM) buoyancyRelation
99          CHARACTER*(MAX_LEN_FNAM) uVelInitFile
100          CHARACTER*(MAX_LEN_FNAM) vVelInitFile
101          CHARACTER*(MAX_LEN_FNAM) pSurfInitFile
102          CHARACTER*(MAX_LEN_FNAM) dQdTfile
103          CHARACTER*(MAX_LEN_FNAM) ploadFile
104          CHARACTER*(MAX_LEN_FNAM) mdsioLocalDir
105          CHARACTER*(6) eosType
106          CHARACTER*(10) pickupSuff
107    
108  C--   COMMON /PARM_I/ Integer valued parameters used by the model.  C--   COMMON /PARM_I/ Integer valued parameters used by the model.
109  C     cg2dMaxIters        - Maximum number of iterations in the  C     cg2dMaxIters        :: Maximum number of iterations in the
110  C                           two-dimensional con. grad solver.  C                           two-dimensional con. grad solver.
111  C     cg2dChkResFreq      - Frequency with which to check residual  C     cg2dChkResFreq      :: Frequency with which to check residual
112  C                           in con. grad solver.  C                           in con. grad solver.
113  C     nIter0              - Start time-step number of for this run  C     cg3dMaxIters        :: Maximum number of iterations in the
114  C     nTimeSteps          - Number of timesteps to execute  C                           three-dimensional con. grad solver.
115  C     numStepsPerPickup   - For offline setup. Frequency of pickup  C     cg3dChkResFreq      :: Frequency with which to check residual
116    C                           in con. grad solver.
117    C     nIter0              :: Start time-step number of for this run
118    C     nTimeSteps          :: Number of timesteps to execute
119    C     numStepsPerPickup   :: For offline setup. Frequency of pickup
120  C                           of flow fields.  C                           of flow fields.
121    C     writeStatePrec      :: Precision used for writing model state.
122    C     writeBinaryPrec     :: Precision used for writing binary files
123    C     readBinaryPrec      :: Precision used for reading binary files
124    C     nCheckLev           :: Holds current checkpoint level
125    C     nonlinFreeSurf      :: option related to non-linear free surface
126    C                           =0 Linear free surface ; >0 Non-linear
127    C     select_rStar        :: option related to r* vertical coordinate
128    C                           =0 (default) use r coord. ; > 0 use r*
129    
130        COMMON /PARM_I/        COMMON /PARM_I/
131       &        cg2dMaxIters,       &        cg2dMaxIters,
132       &        cg2dChkResFreq,       &        cg2dChkResFreq,
133       &        nIter0, nTimeSteps,       &        cg3dMaxIters,
134       &        numStepsPerPickup       &        cg3dChkResFreq,
135         &        nIter0, nTimeSteps, nEndIter,
136         &        numStepsPerPickup,
137         &        writeStatePrec, nCheckLev,
138         &        writeBinaryPrec, readBinaryPrec,
139         &        nonlinFreeSurf, select_rStar,
140         &        tempAdvScheme, saltAdvScheme, tracerAdvScheme,
141         &        debugLevel
142        INTEGER cg2dMaxIters        INTEGER cg2dMaxIters
143        INTEGER cg2dChkResFreq        INTEGER cg2dChkResFreq
144          INTEGER cg3dMaxIters
145          INTEGER cg3dChkResFreq
146        INTEGER nIter0        INTEGER nIter0
147        INTEGER nTimeSteps        INTEGER nTimeSteps
148          INTEGER nEndIter
149        INTEGER numStepsPerPickup        INTEGER numStepsPerPickup
150          INTEGER writeStatePrec
151          INTEGER writeBinaryPrec
152          INTEGER readBinaryPrec
153          INTEGER nCheckLev
154          INTEGER nonlinFreeSurf
155          INTEGER select_rStar
156          INTEGER tempAdvScheme
157          INTEGER saltAdvScheme
158          INTEGER tracerAdvScheme
159          INTEGER debugLevel
160    
161    C
162          INTEGER debLevZero
163          PARAMETER(debLevZero=0)
164          INTEGER debLevA
165          PARAMETER(debLevA=1)
166          INTEGER debLevB
167          PARAMETER(debLevB=2)
168    
169  C--   COMMON /PARM_L/ Logical valued parameters used by the model.  C--   COMMON /PARM_L/ Logical valued parameters used by the model.
170  C     usingCartesianGrid - If TRUE grid generation will be in a cartesian  C     usingCartesianGrid :: If TRUE grid generation will be in a cartesian
171  C                          coordinate frame.  C                          coordinate frame.
172  C     usingSphericalPolarGrid - If TRUE grid generation will be in a  C     usingSphericalPolarGrid :: If TRUE grid generation will be in a
173  C                               spherical polar frame.  C                               spherical polar frame.
174  C     momViscosity  - Flag which turns momentum friction terms on and off.  C     no_slip_sides :: Impose "no-slip" at lateral boundaries.
175  C     momAdvection  - Flag which turns advection of momentum on and off.  C     no_slip_bottom :: Impose "no-slip" at bottom boundary.
176  C     momForcing    - Flag which turns external forcing of momentum on  C     staggerTimeStep :: enable a Stagger time stepping T,S Rho then U,V
177    C     momViscosity  :: Flag which turns momentum friction terms on and off.
178    C     momAdvection  :: Flag which turns advection of momentum on and off.
179    C     momForcing    :: Flag which turns external forcing of momentum on
180  C                     and off.  C                     and off.
181  C     useCoriolis   - Flag which turns the coriolis terms on and off.  C     momPressureForcing :: Flag which turns pressure term in momentum equation
182  C     tempDiffusion - Flag which turns diffusion of temperature on  C                          on and off.
183    C     metricTerms   :: Flag which turns metric terms on or off.
184    C     usingSphericalPolarMTerms :: If TRUE use spherical polar metric terms.
185    C     useNHMTerms :: If TRUE use non-hydrostatic metric terms.
186    C     useCoriolis   :: Flag which turns the coriolis terms on and off.
187    C     tempDiffusion :: Flag which turns diffusion of temperature on
188  C                     and off.  C                     and off.
189  C     tempAdvection - Flag which turns advection of temperature on  C     tempAdvection :: Flag which turns advection of temperature on
190  C                     and off.  C                     and off.
191  C     tempForcing   - Flag which turns external forcing of temperature on  C     tempForcing   :: Flag which turns external forcing of temperature on
192  C                     and off.  C                     and off.
193  C     saltDiffusion - Flag which turns diffusion of salinit on  C     saltDiffusion :: Flag which turns diffusion of salinity on
194  C                     and off.  C                     and off.
195  C     saltAdvection - Flag which turns advection of salinit on  C     saltAdvection :: Flag which turns advection of salinity on
196  C                     and off.  C                     and off.
197  C     saltForcing   - Flag which turns external forcing of salinit on  C     saltForcing   :: Flag which turns external forcing of salinity on
198  C                     and off.  C                     and off.
199    C     useRealFreshWaterFlux :: if True (=Natural BCS), treats P+R-E flux
200    C                         as a real Fresh Water (=> changes the Sea Level)
201    C                         if F, converts P+R-E to salt flux (no SL effect)
202    C     rigidLid            :: Set to true to use rigid lid
203    C     implicitFreeSurface :: Set to true to use implcit free surface
204    C     exactConserv        :: Set to true to conserve exactly the total Volume
205    C     uniformLin_PhiSurf  :: Set to true to use a uniform Bo_surf in the
206    C                           linear relation Phi_surf = Bo_surf*eta
207    C     momStepping   :: Turns momentum equation time-stepping off
208    C     tempStepping  :: Turns temperature equation time-stepping off
209    C     saltStepping  :: Turns salinity equation time-stepping off
210    C     tr1Stepping   :: Turns passive tracer 1 time-stepping on/off
211    C     useConstantF  :: Coriolis parameter set to f0
212    C     useBetaPlaneF :: Coriolis parameter set to f0 + beta.y
213    C     useSphereF    :: Coriolis parameter set to 2.omega.sin(phi)
214    C     useCDscheme   :: use CD-scheme to calculate Coriolis terms.
215    C     useJamartWetPoints :: Use wet-point method for Coriolis (Jamart and Ozer, 1986)
216    C     implicitDiffusion :: Turns implicit vertical diffusion on
217    C     implicitViscosity :: Turns implicit vertical viscosity on
218    C     tempImplVertAdv :: Turns on implicit vertical advection for Temperature
219    C     saltImplVertAdv :: Turns on implicit vertical advection for Salinity
220    C     momImplVertAdv  :: Turns on implicit vertical advection for Momentum
221    C     multiDimAdvection :: Flag that enable multi-dimension advection
222    C     forcing_In_AB :: if False, put forcing (Temp,Salt,Tracers) contribution
223    C                      out off Adams-Bashforth time stepping.
224    C     doThetaClimRelax :: Set true if relaxation to temperature
225    C                        climatology is required.
226    C     doSaltClimRelax  :: Set true if relaxation to salinity
227    C                        climatology is required.
228    C     periodicExternalForcing :: Set true if forcing is time-dependant
229    C     usingPCoords     :: Set to indicate that we are working in pressure
230    C                        coords. (jmc: is it still used ?)
231    C     usingZCoords     :: Set to indicate that we are working in height
232    C                        coords. (jmc: is it still used ?)
233    C     useDynP_inEos_Zc :: use the dynamical pressure in EOS (with Z-coord.)
234    C                         this requires specific code for restart & exchange
235    C     setCenterDr    :: set cell Center depth and put Interface at the middle
236    C     nonHydrostatic :: Using non-hydrostatic terms
237    C     quasiHydrostatic :: Using non-hydrostatic terms in hydrostatic algorithm
238    C     globalFiles    :: Selects between "global" and "tiled" files
239    C     useSingleCpuIO :: On SGI platforms, option globalFiles is either
240    C                       slow (f77) or does not work (f90).  When
241    C                       useSingleCpuIO is set, mdsio_writefield.F
242    C                       outputs from master mpi process only.
243    C     allowFreezing  :: Allows surface water to freeze and form ice
244    C     useOldFreezing :: use the old version (before checkpoint52a_pre, 2003-11-12)
245    C     groundAtK1  :: put the surface(k=1) at the Lower Boundary (=ground)
246        COMMON /PARM_L/ usingCartesianGrid, usingSphericalPolarGrid,        COMMON /PARM_L/ usingCartesianGrid, usingSphericalPolarGrid,
247       & momViscosity, momAdvection, momForcing, useCoriolis,       & usingCurvilinearGrid,
248         & no_slip_sides,no_slip_bottom,
249         & staggerTimeStep,
250         & momViscosity, momAdvection, momForcing, useCoriolis,
251         & momPressureForcing, vectorInvariantMomentum,
252       & tempDiffusion, tempAdvection, tempForcing,       & tempDiffusion, tempAdvection, tempForcing,
253       & saltDiffusion, saltAdvection, saltForcing       & saltDiffusion, saltAdvection, saltForcing,
254         & useRealFreshWaterFlux,
255         & rigidLid, implicitFreeSurface, exactConserv, uniformLin_PhiSurf,
256         & momStepping, tempStepping, saltStepping, tr1Stepping,
257         & metricTerms, usingSphericalPolarMTerms, useNHMTerms,
258         & useConstantF, useBetaPlaneF, useSphereF,
259         & useCDscheme,
260         & useEnergyConservingCoriolis, useJamartWetPoints,
261         & implicitDiffusion, implicitViscosity,
262         & tempImplVertAdv, saltImplVertAdv, momImplVertAdv,
263         & multiDimAdvection, forcing_In_AB,
264         & doThetaClimRelax, doSaltClimRelax, doTr1ClimRelax,
265         & periodicExternalForcing,
266         & usingPCoords, usingZCoords, useDynP_inEos_Zc, setCenterDr,
267         & nonHydrostatic, quasiHydrostatic, globalFiles, useSingleCpuIO,
268         & allowFreezing, useOldFreezing, groundAtK1,
269         & usePickupBeforeC35, debugMode,
270         & readPickupWithTracer, writePickupWithTracer
271        LOGICAL usingCartesianGrid        LOGICAL usingCartesianGrid
272        LOGICAL usingSphericalPolarGrid        LOGICAL usingSphericalPolarGrid
273          LOGICAL usingCurvilinearGrid
274          LOGICAL usingSphericalPolarMTerms
275          LOGICAL useNHMTerms
276          LOGICAL no_slip_sides
277          LOGICAL no_slip_bottom
278          LOGICAL staggerTimeStep
279        LOGICAL momViscosity        LOGICAL momViscosity
280        LOGICAL momAdvection        LOGICAL momAdvection
281        LOGICAL momForcing        LOGICAL momForcing
282          LOGICAL momPressureForcing
283        LOGICAL useCoriolis        LOGICAL useCoriolis
284          LOGICAL vectorInvariantMomentum
285        LOGICAL tempDiffusion        LOGICAL tempDiffusion
286        LOGICAL tempAdvection        LOGICAL tempAdvection
287        LOGICAL tempForcing        LOGICAL tempForcing
288        LOGICAL saltDiffusion        LOGICAL saltDiffusion
289        LOGICAL saltAdvection        LOGICAL saltAdvection
290        LOGICAL saltForcing        LOGICAL saltForcing
291          LOGICAL useRealFreshWaterFlux
292          LOGICAL rigidLid
293          LOGICAL implicitFreeSurface
294          LOGICAL exactConserv
295          LOGICAL uniformLin_PhiSurf
296          LOGICAL momStepping
297          LOGICAL tempStepping
298          LOGICAL saltStepping
299          LOGICAL tr1Stepping
300          LOGICAL metricTerms
301          LOGICAL useConstantF
302          LOGICAL useBetaPlaneF
303          LOGICAL useSphereF
304          LOGICAL useCDscheme
305          LOGICAL useEnergyConservingCoriolis
306          LOGICAL useJamartWetPoints
307          LOGICAL implicitDiffusion
308          LOGICAL implicitViscosity
309          LOGICAL tempImplVertAdv
310          LOGICAL saltImplVertAdv
311          LOGICAL momImplVertAdv
312          LOGICAL multiDimAdvection
313          LOGICAL forcing_In_AB
314          LOGICAL doThetaClimRelax
315          LOGICAL doSaltClimRelax
316          LOGICAL doTr1ClimRelax
317          LOGICAL periodicExternalForcing
318          LOGICAL usingPCoords
319          LOGICAL usingZCoords
320          LOGICAL useDynP_inEos_Zc
321          LOGICAL setCenterDr
322          LOGICAL nonHydrostatic
323          LOGICAL quasiHydrostatic
324          LOGICAL globalFiles
325          LOGICAL useSingleCpuIO
326          LOGICAL allowFreezing
327          LOGICAL useOldFreezing
328          LOGICAL groundAtK1
329          LOGICAL usePickupBeforeC35
330          LOGICAL debugMode
331          LOGICAL readPickupWithTracer
332          LOGICAL writePickupWithTracer
333    
334  C--   COMMON /PARM_R/ "Real" valued parameters used by the model.  C--   COMMON /PARM_R/ "Real" valued parameters used by the model.
335  C     cg2dTargetResidual  C     gg2dTargetResidual
336  C               - Target residual for cg2d solver.  C          :: Target residual for cg2d solver; no unit (RHS normalisation)
337  C     delZ      - Vertical grid spacing (Pa) - delZ is the distance  C     cg2dTargetResWunit
338  C                 between "w" surfaces.  C          :: Target residual for cg2d solver; W unit (No RHS normalisation)
339  C     delX      - Separation between cell faces (m) or (deg), depending  C     cg3dTargetResidual
340    C               :: Target residual for cg3d solver.
341    C     cg2dpcOffDFac :: Averaging weight for preconditioner off-diagonal.
342    C     Note. 20th May 1998
343    C           I made a weird discovery! In the model paper we argue
344    C           for the form of the preconditioner used here ( see
345    C           A Finite-volume, Incompressible Navier-Stokes Model
346    C           ...., Marshall et. al ). The algebra gives a simple
347    C           0.5 factor for the averaging of ac and aCw to get a
348    C           symmettric pre-conditioner. By using a factor of 0.51
349    C           i.e. scaling the off-diagonal terms in the
350    C           preconditioner down slightly I managed to get the
351    C           number of iterations for convergence in a test case to
352    C           drop form 192 -> 134! Need to investigate this further!
353    C           For now I have introduced a parameter cg2dpcOffDFac which
354    C           defaults to 0.51 but can be set at runtime.
355    C     delR      :: Vertical grid spacing ( units of r ).
356    C     delRc     :: Vertical grid spacing between cell centers (r unit).
357    C     delX      :: Separation between cell faces (m) or (deg), depending
358  C     delY        on input flags.  C     delY        on input flags.
359  C     gravity   - Accel. due to gravity ( m/s^2 )  C     gravity   :: Accel. due to gravity ( m/s^2 )
360  C     ronil     - Reference density  C     recip_gravity and its inverse
361  C     startTime - Start time for model  C     gBaro     :: Accel. due to gravity used in barotropic equation ( m/s^2 )
362  C     oBandBeg  - Offline bands start and end times.  C     rhoNil    :: Reference density for the linear equation of state
363  C     oBandEnd  C     rhoConst  :: Vertically constant reference density
364  C     oPeriodLength - Lenght of offline period.  C     rhoConstFresh :: Constant reference density for fresh water (rain)
365  C     phiMin    - Latitude of southern most cell face.  C     startTime :: Start time for model ( s )
366  C     thetaMin  - Longitude of western most cell face (this  C     phiMin    :: Latitude of southern most cell face.
367    C     thetaMin  :: Longitude of western most cell face (this
368  C                 is an "inert" parameter but it is included  C                 is an "inert" parameter but it is included
369  C                 to make geographical references simple.)  C                 to make geographical references simple.)
370  C     rSphere   - Radius of sphere for a spherical polar grid.  C     rSphere   :: Radius of sphere for a spherical polar grid ( m ).
371  C     f0        - Reference coriolis parameter ( 1/s )  C     recip_RSphere  :: Reciprocal radius of sphere ( m ).
372    C     f0        :: Reference coriolis parameter ( 1/s )
373  C                 ( Southern edge f for beta plane )  C                 ( Southern edge f for beta plane )
374  C     beta      - df/dy ( s^-1.m^-1 )  C     beta      :: df/dy ( s^-1.m^-1 )
375  C     viscAh    - Eddy viscosity coeff. for mixing of  C     omega     :: Angular velocity ( rad/s )
376    C     rotationPeriod :: Rotation period (s) (= 2.pi/omega)
377    C     viscAh    :: Eddy viscosity coeff. for mixing of
378  C                 momentum laterally ( m^2/s )  C                 momentum laterally ( m^2/s )
379  C     viscAz    - Eddy viscosity coeff. for mixing of  C     viscAr    :: Eddy viscosity coeff. for mixing of
380  C                 momentum vertically ( m^2/s )  C                 momentum vertically ( units of r^2/s )
381  C     viscA4    - Biharmonic viscosity coeff. for mixing of  C     viscA4    :: Biharmonic viscosity coeff. for mixing of
382  C                 momentum laterally ( m^4/s )  C                 momentum laterally ( m^4/s )
383  C     diffKhT   - Laplacian diffusion coeff. for mixing of  C     viscAhMax :: Maximum eddy viscosity coeff. for mixing of
384    C                 momentum laterally ( m^2/s )
385    C     viscA4Max :: Maximum biharmonic viscosity coeff. for mixing of
386    C                 momentum laterally ( m^4/s )
387    C     viscAhGrid:: non-dimensional grid-size dependent viscosity
388    C     viscA4Grid:: non-dimensional grid-size dependent bi-harmonic viscosity
389    C     diffKhT   :: Laplacian diffusion coeff. for mixing of
390  C                 heat laterally ( m^2/s )  C                 heat laterally ( m^2/s )
391  C     diffKzT   - Laplacian diffusion coeff. for mixing of  C     diffKrT   :: Laplacian diffusion coeff. for mixing of
392  C                 heat vertically ( m^2/s )  C                 heat vertically ( units of r^2/s )
393  C     diffK4T   - Biharmonic diffusion coeff. for mixing of  C     diffK4T   :: Biharmonic diffusion coeff. for mixing of
394  C                 heat laterally ( m^4/s )  C                 heat laterally ( m^4/s )
395  C     diffKhS  -  Laplacian diffusion coeff. for mixing of  C     diffKhS  ::  Laplacian diffusion coeff. for mixing of
396  C                 salt laterally ( m^2/s )  C                 salt laterally ( m^2/s )
397  C     diffKzS   - Laplacian diffusion coeff. for mixing of  C     diffKrS   :: Laplacian diffusion coeff. for mixing of
398  C                 salt vertically ( m^2/s )  C                 salt vertically ( units of r^2/s )
399  C     diffK4S   - Biharmonic diffusion coeff. for mixing of  C     diffK4S   :: Biharmonic diffusion coeff. for mixing of
400  C                 salt laterally ( m^4/s )  C                 salt laterally ( m^4/s )
401  C     delt      - Timestep ( s )  C     deltaT    :: Default timestep ( s )
402  C     tauCD     - CD scheme coupling timescale ( 1/s )  C     deltaTClock  :: Timestep used as model "clock". This determines the
403  C     rCD       - CD scheme normalised coupling parameter ( 0-1 )  C                    IO frequencies and is used in tagging output. It can
404  C     startTime - Starting time for this integration ( s ).  C                    be totally different to the dynamical time. Typically
405  C     endTime   - Ending time for this integration ( s ).  C                    it will be the deep-water timestep for accelerated runs.
406  C     chkPtFreq - Frequency of check pointing ( s ).  C                    Frequency of checkpointing and dumping of the model state
407  C     dumpFreq  - Frequency with which model state is written to  C                    are referenced to this clock. ( s )
408  C                 post-processing files ( s ).  C     deltaTMom    :: Timestep for momemtum equations ( s )
409        COMMON /PARM_R/ cg2dTargetResidual, delZ, delX, delY,  C     deltaTtracer :: Timestep for tracer equations ( s )
410       & deltaTmom, deltaTtracer, abeps, startTime, oBandBeg, oBandEnd,  C     deltaTfreesurf :: Timestep for free-surface equation ( s )
411       & oPeriodLength, phiMin, thetaMin, rSphere, f0, fCori, beta,  C     freesurfFac  :: Parameter to turn implicit free surface term on or off
412       & viscAh, viscAz, viscA4, diffKhT, diffKzT, diffK4T,  C                    freesurfac = 1. uses implicit free surface
413       & diffKhS, diffKzS, diffK4S, delT, tauCD, rCD,  C                    freesurfac = 0. uses rigid lid
414       & tAlpha, sBeta, gravity, rhonil, tRef, sRef,  C     implicSurfPress :: parameter of the Crank-Nickelson time stepping :
415       & endTime, chkPtFreq, dumpFreq  C                     Implicit part of Surface Pressure Gradient ( 0-1 )
416        REAL cg2dTargetResidual  C     implicDiv2Dflow :: parameter of the Crank-Nickelson time stepping :
417        REAL delZ(Nz)  C                     Implicit part of barotropic flow Divergence ( 0-1 )
418        REAL delX(Nx)  C     hFacMin      :: Minimum fraction size of a cell (affects hFacC etc...)
419        REAL delY(Ny)  C     hFacMinDz    :: Minimum dimesional size of a cell (affects hFacC etc..., m)
420        REAL deltaTmom  C     hFacMinDp    :: Minimum dimesional size of a cell (affects hFacC etc..., Pa)
421        REAL deltaTtracer  C     hFacMinDr    :: Minimum dimesional size of a cell (affects hFacC etc..., units of r)
422        REAL abeps  C     hFacInf      :: Threshold (inf and sup) for fraction size of surface cell
423        REAL oBandBeg(nOBands),oBandEnd(nOBands)  C     hFacSup        that control vanishing and creating levels
424        REAL oPeriodLength  C     tauCD        :: CD scheme coupling timescale ( 1/s )
425        REAL phiMin  C     rCD          :: CD scheme normalised coupling parameter ( 0-1 )
426        REAL thetaMin  C     startTime     :: Starting time for this integration ( s ).
427        REAL rSphere  C     endTime       :: Ending time for this integration ( s ).
428        REAL f0  C     chkPtFreq     :: Frequency of rolling check pointing ( s ).
429        _RL  beta  C     pChkPtFreq    :: Frequency of permanent check pointing ( s ).
430        REAL viscAh  C     dumpFreq      :: Frequency with which model state is written to
431        REAL viscAz  C                     post-processing files ( s ).
432        REAL viscA4  C     diagFreq      :: Frequency with which model writes diagnostic output
433        REAL diffKhT  C                     of intermediate quantities.
434        REAL diffKzT  C     afFacMom      :: Advection of momentum term tracer parameter
435        REAL diffK4T  C     vfFacMom      :: Momentum viscosity tracer parameter
436        REAL diffKhS  C     pfFacMom      :: Momentum pressure forcing tracer parameter
437        REAL diffKzS  C     cfFacMom      :: Coriolis term tracer parameter
438        REAL diffK4S  C     foFacMom      :: Momentum forcing tracer parameter
439        REAL delt  C     mtFacMom      :: Metric terms tracer parameter
440        REAL tauCD  C     cosPower      :: Power of cosine of latitude to multiply viscosity
441        REAL rCD  C     cAdjFreq      :: Frequency of convective adjustment
442        REAL tAlpha  C
443        REAL sBeta  C     taveFreq      :: Frequency with which time-averaged model state
444        REAL gravity  C                      is written to post-processing files ( s ).
445        REAL rhonil  C     tave_lastIter :: (for state variable only) fraction of the last time
446        REAL tRef(Nz)  C                      step (of each taveFreq period) put in the time average.
447        REAL sRef(Nz)  C                      (fraction for 1rst iter = 1 - tave_lastIter)
448        real Fcori(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)  C     tauThetaClimRelax :: Relaxation to climatology time scale ( s ).
449        REAL startTime  C     lambdaThetaClimRelax :: Inverse time scale for relaxation ( 1/s ).
450        REAL endTime  C     tauSaltClimRelax :: Relaxation to climatology time scale ( s ).
451        REAL chkPtFreq  C     lambdaSaltClimRelax :: Inverse time scale for relaxation ( 1/s ).
452        REAL dumpFreq  C     latBandClimRelax :: latitude band where Relaxation to Clim. is applied,
453        COMMON /PARM_A/ HeatCapacity_Cp,  C                         i.e. where |yC| <= latBandClimRelax
454       &                Lamba_theta  C     externForcingPeriod :: Is the period of which forcing varies (eg. 1 month)
455        REAL HeatCapacity_Cp  C     externForcingCycle :: Is the repeat time of the forcing (eg. 1 year)
456        REAL Lamba_theta  C                          (note: externForcingCycle must be an integer
457    C                           number times externForcingPeriod)
458    C     convertFW2Salt :: salinity, used to convert Fresh-Water Flux to Salt Flux
459    C                       (use model surface (local) value if set to -1)
460    C     temp_EvPrRn :: temperature of Rain & Evap.
461    C     salt_EvPrRn :: salinity of Rain & Evap.
462    C     trac_EvPrRn :: tracer concentration in Rain & Evap.
463    C        (notes: a) tracer content of Rain/Evap only used if both
464    C                     NonLin_FrSurf & useRealFreshWater are set.
465    C                b) use model surface (local) value if set to UNSET_RL)
466    C     horiVertRatio      :: Ratio on units in vertical to units in horizontal.
467    C     recip_horiVertRatio  ( 1 if horiz in m and vertical in m ).
468    C                          ( g*rho if horiz in m and vertical in Pa ).
469    C     Ro_SeaLevel        :: standard position of Sea-Level in "R" coordinate, used as
470    C                          starting value (k=1) for vertical coordinate (rf(1)=Ro_SeaLevel)
471    C     bottomDragLinear   :: Drag coefficient built in to core dynamics
472    C      --"-"--  Quadratic  ( linear: 1/s, quadratic: 1/m )
473          COMMON /PARM_R/ cg2dTargetResidual, cg2dTargetResWunit,
474         & cg2dpcOffDFac, cg3dTargetResidual,
475         & delR, delRc, delX, delY,
476         & deltaT, deltaTmom, deltaTtracer, deltaTfreesurf, deltaTClock,
477         & abeps, startTime,
478         & phiMin, thetaMin, rSphere, recip_RSphere, f0, beta,
479         & fCori, fCoriG, fCoriCos,
480         & viscAh,  viscAhMax, viscAhGrid,
481         & viscA4,  viscA4Max, viscA4Grid,
482         & viscAr, viscAstrain, viscAtension,
483         & diffKhT, diffK4T, diffKrT,
484         & diffKhS, diffK4S, diffKrS,
485         & delT, tauCD, rCD, freeSurfFac, implicSurfPress, implicDiv2Dflow,
486         & hFacMin, hFacMinDz, hFacInf, hFacSup,
487         & gravity, recip_Gravity, gBaro, rhonil, recip_rhonil,
488         & recip_rhoConst, rhoConst,
489         & rhoConstFresh, convertEmP2rUnit, tRef, sRef,
490         & endTime, chkPtFreq, pchkPtFreq, dumpFreq,
491         & diagFreq, taveFreq, tave_lastIter, monitorFreq,
492         & afFacMom, vfFacMom, pfFacMom, cfFacMom, foFacMom, mtFacMom,
493         & cosPower, cAdjFreq, omega, rotationPeriod,
494         & tauThetaClimRelax, lambdaThetaClimRelax,
495         & tauSaltClimRelax, lambdaSaltClimRelax,
496         & tauTr1ClimRelax, lambdaTr1ClimRelax, latBandClimRelax,
497         & externForcingCycle, externForcingPeriod,
498         & convertFW2Salt, temp_EvPrRn, salt_EvPrRn, trac_EvPrRn,
499         & hFacMinDr, hFacMinDp,
500         & horiVertRatio, recip_horiVertRatio,
501         & ivdc_kappa, Ro_SeaLevel,
502         & bottomDragLinear,bottomDragQuadratic
503    
504          _RL cg2dTargetResidual
505          _RL cg2dTargetResWunit
506          _RL cg3dTargetResidual
507          _RL cg2dpcOffDFac
508          _RL delR(Nr)
509          _RL delRc(Nr+1)
510          _RL delX(Nx)
511          _RL delY(Ny)
512          _RL deltaT
513          _RL deltaTClock
514          _RL deltaTmom
515          _RL deltaTtracer
516          _RL deltaTfreesurf
517          _RL abeps
518          _RL phiMin
519          _RL thetaMin
520          _RL rSphere
521          _RL recip_RSphere
522          _RL f0
523          _RL freeSurfFac
524          _RL implicSurfPress
525          _RL implicDiv2Dflow
526          _RL hFacMin
527          _RL hFacMinDz
528          _RL hFacMinDp
529          _RL hFacMinDr
530          _RL hFacInf
531          _RL hFacSup
532          _RL beta
533          _RL viscAh
534          _RL viscAhMax
535          _RL viscAhGrid
536          _RL viscAstrain
537          _RL viscAtension
538          _RL viscAr
539          _RL viscA4
540          _RL viscA4Max
541          _RL viscA4Grid
542          _RL diffKhT
543          _RL diffKrT
544          _RL diffK4T
545          _RL diffKhS
546          _RL diffKrS
547          _RL diffK4S
548          _RL delt
549          _RL tauCD
550          _RL rCD
551          _RL gravity
552          _RL recip_gravity
553          _RL gBaro
554          _RL rhonil
555          _RL recip_rhonil
556          _RL rhoConst
557          _RL recip_rhoConst
558          _RL rhoConstFresh
559          _RL convertEmP2rUnit
560          _RL tRef(Nr)
561          _RL sRef(Nr)
562          _RS fCori(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
563          _RS fCoriG(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
564          _RS fCoriCos(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
565          _RL startTime
566          _RL endTime
567          _RL chkPtFreq
568          _RL pChkPtFreq
569          _RL dumpFreq
570          _RL diagFreq
571          _RL taveFreq
572          _RL tave_lastIter
573          _RL monitorFreq
574          _RL afFacMom
575          _RL vfFacMom
576          _RL pfFacMom
577          _RL cfFacMom
578          _RL foFacMom
579          _RL mTFacMom
580          _RL cosPower
581          _RL cAdjFreq
582          _RL omega
583          _RL rotationPeriod
584          _RL tauThetaClimRelax
585          _RL lambdaThetaClimRelax
586          _RL tauSaltClimRelax
587          _RL lambdaSaltClimRelax
588          _RL tauTr1ClimRelax
589          _RL lambdaTr1ClimRelax
590          _RL latBandClimRelax
591          _RL externForcingCycle
592          _RL externForcingPeriod
593          _RL convertFW2Salt
594          _RL temp_EvPrRn
595          _RL salt_EvPrRn
596          _RL trac_EvPrRn
597          _RL horiVertRatio
598          _RL recip_horiVertRatio
599          _RL ivdc_kappa
600          _RL Ro_SeaLevel
601          _RL bottomDragLinear
602          _RL bottomDragQuadratic
603    
604    C--   COMMON /PARM_A/ Thermodynamics constants ?
605          COMMON /PARM_A/ HeatCapacity_Cp,recip_Cp
606          _RL HeatCapacity_Cp
607          _RL recip_Cp
608    
609    C--   COMMON /PARM_ATM/ Atmospheric physical parameters (Ideal Gas EOS, ...)
610    C     celsius2K :: convert centigrade (Celsius) degree to Kelvin
611    C     atm_Po    :: standard reference pressure
612    C     atm_Cp    :: specific heat (Cp) of the (dry) air at constant pressure
613    C     atm_Rd    :: gas constant for dry air
614    C     atm_kappa :: kappa = R/Cp (R: constant of Ideal Gas EOS)
615    C     atm_Rq    :: water vapour specific volume anomaly relative to dry air
616    C                  (e.g. typical value = (29/18 -1) 10^-3 with q [g/kg])
617    C     integr_GeoPot :: option to select the way we integrate the geopotential
618    C                     (still a subject of discussions ...)
619    C     selectFindRoSurf :: select the way surf. ref. pressure (=Ro_surf) is
620    C             derived from the orography. Implemented: 0,1 (see INI_P_GROUND)
621          COMMON /PARM_ATM/
622         &            celsius2K,
623         &            atm_Cp, atm_Rd, atm_kappa, atm_Rq, atm_Po,
624         &            integr_GeoPot, selectFindRoSurf
625          _RL celsius2K
626          _RL atm_Po, atm_Cp, atm_Rd, atm_kappa, atm_Rq
627          INTEGER integr_GeoPot, selectFindRoSurf
628    
629    C Logical flags for selecting packages
630          LOGICAL useKPP
631          LOGICAL useGMRedi
632          LOGICAL useOBCS
633          LOGICAL useAIM
634          LOGICAL useLand
635          LOGICAL useGrdchk
636          LOGICAL useECCO
637          LOGICAL useSHAP_FILT
638          LOGICAL useZONAL_FILT
639          LOGICAL useFLT
640          LOGICAL usePTRACERS
641          LOGICAL useSBO
642          LOGICAL useSEAICE
643          LOGICAL useBulkForce
644          LOGICAL useThSIce
645          LOGICAL usefizhi
646          LOGICAL usegridalt
647          LOGICAL usediagnostics
648          COMMON /PARM_PACKAGES/
649         &        useKPP, useGMRedi, useOBCS, useAIM, useLand, useECCO,
650         &        useSHAP_FILT, useZONAL_FILT, useGrdchk, useFLT,
651         &        usePTRACERS,  useSBO, useSEAICE, useThSIce, useBulkForce,
652         &        usefizhi,  usegridalt, usediagnostics

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