/[MITgcm]/MITgcm/model/inc/PARAMS.h
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revision 1.6 by adcroft, Wed May 20 21:29:31 1998 UTC revision 1.78 by adcroft, Tue Nov 5 19:58:21 2002 UTC
# Line 1  Line 1 
1  C $Header$  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
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
86          CHARACTER*(5) checkPtSuff(maxNoChkptLev)
87          CHARACTER*(MAX_LEN_FNAM) bathyFile, topoFile
88          CHARACTER*(MAX_LEN_FNAM) hydrogThetaFile
89          CHARACTER*(MAX_LEN_FNAM) hydrogSaltFile
90          CHARACTER*(MAX_LEN_FNAM) zonalWindFile
91          CHARACTER*(MAX_LEN_FNAM) meridWindFile
92          CHARACTER*(MAX_LEN_FNAM) thetaClimFile
93          CHARACTER*(MAX_LEN_FNAM) saltClimFile
94          CHARACTER*(MAX_LEN_FNAM) surfQfile
95          CHARACTER*(MAX_LEN_FNAM) surfQswfile
96          CHARACTER*(MAX_LEN_FNAM) EmPmRfile
97          CHARACTER*(MAX_LEN_FNAM) buoyancyRelation
98          CHARACTER*(MAX_LEN_FNAM) uVelInitFile
99          CHARACTER*(MAX_LEN_FNAM) vVelInitFile
100          CHARACTER*(MAX_LEN_FNAM) pSurfInitFile
101          CHARACTER*(MAX_LEN_FNAM) dQdTfile
102          CHARACTER*(MAX_LEN_FNAM) ploadFile
103          CHARACTER*(6) eosType
104    
105  C--   COMMON /PARM_I/ Integer valued parameters used by the model.  C--   COMMON /PARM_I/ Integer valued parameters used by the model.
106  C     cg2dMaxIters        - Maximum number of iterations in the  C     cg2dMaxIters        :: Maximum number of iterations in the
107  C                           two-dimensional con. grad solver.  C                           two-dimensional con. grad solver.
108  C     cg2dChkResFreq      - Frequency with which to check residual  C     cg2dChkResFreq      :: Frequency with which to check residual
109    C                           in con. grad solver.
110    C     cg3dMaxIters        :: Maximum number of iterations in the
111    C                           three-dimensional con. grad solver.
112    C     cg3dChkResFreq      :: Frequency with which to check residual
113  C                           in con. grad solver.  C                           in con. grad solver.
114  C     nIter0              - Start time-step number of for this run  C     nIter0              :: Start time-step number of for this run
115  C     nTimeSteps          - Number of timesteps to execute  C     nTimeSteps          :: Number of timesteps to execute
116  C     numStepsPerPickup   - For offline setup. Frequency of pickup  C     numStepsPerPickup   :: For offline setup. Frequency of pickup
117  C                           of flow fields.  C                           of flow fields.
118    C     writeStatePrec      :: Precision used for writing model state.
119    C     writeBinaryPrec     :: Precision used for writing binary files
120    C     readBinaryPrec      :: Precision used for reading binary files
121    C     nCheckLev           :: Holds current checkpoint level
122    C     nonlinFreeSurf      :: option related to non-linear free surface
123    C                           =0 Linear free surface ; >0 Non-linear
124    
125        COMMON /PARM_I/        COMMON /PARM_I/
126       &        cg2dMaxIters,       &        cg2dMaxIters,
127       &        cg2dChkResFreq,       &        cg2dChkResFreq,
128       &        nIter0, nTimeSteps,       &        cg3dMaxIters,
129       &        numStepsPerPickup       &        cg3dChkResFreq,
130         &        nIter0, nTimeSteps, nEndIter,
131         &        numStepsPerPickup,
132         &        writeStatePrec, nCheckLev,
133         &        writeBinaryPrec, readBinaryPrec,
134         &        nonlinFreeSurf,
135         &        tempAdvScheme, saltAdvScheme, tracerAdvScheme
136        INTEGER cg2dMaxIters        INTEGER cg2dMaxIters
137        INTEGER cg2dChkResFreq        INTEGER cg2dChkResFreq
138          INTEGER cg3dMaxIters
139          INTEGER cg3dChkResFreq
140        INTEGER nIter0        INTEGER nIter0
141        INTEGER nTimeSteps        INTEGER nTimeSteps
142          INTEGER nEndIter
143        INTEGER numStepsPerPickup        INTEGER numStepsPerPickup
144          INTEGER writeStatePrec
145          INTEGER writeBinaryPrec
146          INTEGER readBinaryPrec
147          INTEGER nCheckLev
148          INTEGER nonlinFreeSurf
149          INTEGER tempAdvScheme
150          INTEGER saltAdvScheme
151          INTEGER tracerAdvScheme
152    
153  C--   COMMON /PARM_L/ Logical valued parameters used by the model.  C--   COMMON /PARM_L/ Logical valued parameters used by the model.
154  C     usingCartesianGrid - If TRUE grid generation will be in a cartesian  C     usingCartesianGrid :: If TRUE grid generation will be in a cartesian
155  C                          coordinate frame.  C                          coordinate frame.
156  C     usingSphericalPolarGrid - If TRUE grid generation will be in a  C     usingSphericalPolarGrid :: If TRUE grid generation will be in a
157  C                               spherical polar frame.  C                               spherical polar frame.
158  C     momViscosity  - Flag which turns momentum friction terms on and off.  C     no_slip_sides :: Impose "no-slip" at lateral boundaries.
159  C     momAdvection  - Flag which turns advection of momentum on and off.  C     no_slip_bottom :: Impose "no-slip" at bottom boundary.
160  C     momForcing    - Flag which turns external forcing of momentum on  C     staggerTimeStep :: enable a Stagger time stepping T,S Rho then U,V
161    C     momViscosity  :: Flag which turns momentum friction terms on and off.
162    C     momAdvection  :: Flag which turns advection of momentum on and off.
163    C     momForcing    :: Flag which turns external forcing of momentum on
164  C                     and off.  C                     and off.
165  C     useCoriolis   - Flag which turns the coriolis terms on and off.  C     momPressureForcing :: Flag which turns pressure term in momentum equation
166  C     tempDiffusion - Flag which turns diffusion of temperature on  C                          on and off.
167    C     metricTerms   :: Flag which turns metric terms on or off.
168    C     usingSphericalPolarMTerms :: If TRUE use spherical polar metric terms.
169    C     useNHMTerms :: If TRUE use non-hydrostatic metric terms.
170    C     useCoriolis   :: Flag which turns the coriolis terms on and off.
171    C     tempDiffusion :: Flag which turns diffusion of temperature on
172  C                     and off.  C                     and off.
173  C     tempAdvection - Flag which turns advection of temperature on  C     tempAdvection :: Flag which turns advection of temperature on
174  C                     and off.  C                     and off.
175  C     tempForcing   - Flag which turns external forcing of temperature on  C     tempForcing   :: Flag which turns external forcing of temperature on
176  C                     and off.  C                     and off.
177  C     saltDiffusion - Flag which turns diffusion of salinit on  C     saltDiffusion :: Flag which turns diffusion of salinity on
178  C                     and off.  C                     and off.
179  C     saltAdvection - Flag which turns advection of salinit on  C     saltAdvection :: Flag which turns advection of salinity on
180  C                     and off.  C                     and off.
181  C     saltForcing   - Flag which turns external forcing of salinit on  C     saltForcing   :: Flag which turns external forcing of salinity on
182  C                     and off.  C                     and off.
183    C     useRealFreshWaterFlux :: if True (=Natural BCS), treats P+R-E flux
184    C                         as a real Fresh Water (=> changes the Sea Level)
185    C                         if F, converts P+R-E to salt flux (no SL effect)
186    C     rigidLid            :: Set to true to use rigid lid
187    C     implicitFreeSurface :: Set to true to use implcit free surface
188    C     exactConserv        :: Set to true to conserve exactly the total Volume
189    C     uniformLin_PhiSurf  :: Set to true to use a uniform Bo_surf in the
190    C                           linear relation Phi_surf = Bo_surf*eta
191    C     momStepping   :: Turns momentum equation time-stepping off
192    C     tempStepping  :: Turns temperature equation time-stepping off
193    C     saltStepping  :: Turns salinity equation time-stepping off
194    C     tr1Stepping   :: Turns passive tracer 1 time-stepping on/off
195    C     useConstantF  :: Coriolis parameter set to f0
196    C     useBetaPlaneF :: Coriolis parameter set to f0 + beta.y
197    C     useSphereF    :: Coriolis parameter set to 2.omega.sin(phi)
198    C     useJamartWetPoints :: Use wet-point method for Coriolis (Jamart and Ozer, 1986)
199    C     implicitDiffusion :: Turns implicit vertical diffusion on
200    C     implicitViscosity :: Turns implicit vertical viscosity on
201    C     multiDimAdvection :: Flag that enable multi-dimension advection
202    C     forcing_In_AB :: if False, put forcing (Temp,Salt,Tracers) contribution
203    C                      out off Adams-Bashforth time stepping.
204    C     doThetaClimRelax :: Set true if relaxation to temperature
205    C                        climatology is required.
206    C     doSaltClimRelax  :: Set true if relaxation to salinity
207    C                        climatology is required.
208    C     periodicExternalForcing :: Set true if forcing is time-dependant
209    C     usingPCoords     :: Set to indicate that we are working in pressure
210    C                        coords.
211    C     usingZCoords     :: Set to indicate that we are working in height
212    C                        coords.
213    C     setCenterDr    :: set cell Center depth and put Interface at the middle
214    C     nonHydrostatic :: Using non-hydrostatic terms
215    C     globalFiles    :: Selects between "global" and "tiled" files
216    C     allowFreezing  :: Allows water to freeze and form ice
217    C     groundAtK1  :: put the surface(k=1) at the Lower Boundary (=ground)
218        COMMON /PARM_L/ usingCartesianGrid, usingSphericalPolarGrid,        COMMON /PARM_L/ usingCartesianGrid, usingSphericalPolarGrid,
219       & momViscosity, momAdvection, momForcing, useCoriolis,       & usingCurvilinearGrid,
220         & no_slip_sides,no_slip_bottom,
221         & staggerTimeStep,
222         & momViscosity, momAdvection, momForcing, useCoriolis,
223         & momPressureForcing, vectorInvariantMomentum,
224       & tempDiffusion, tempAdvection, tempForcing,       & tempDiffusion, tempAdvection, tempForcing,
225       & saltDiffusion, saltAdvection, saltForcing       & saltDiffusion, saltAdvection, saltForcing,
226         & useRealFreshWaterFlux,
227         & rigidLid, implicitFreeSurface, exactConserv, uniformLin_PhiSurf,
228         & momStepping, tempStepping, saltStepping, tr1Stepping,
229         & metricTerms, usingSphericalPolarMTerms, useNHMTerms,
230         & useConstantF, useBetaPlaneF, useSphereF,
231         & useEnergyConservingCoriolis, useJamartWetPoints,
232         & implicitDiffusion, implicitViscosity,
233         & multiDimAdvection, forcing_In_AB,
234         & doThetaClimRelax, doSaltClimRelax, doTr1ClimRelax,
235         & periodicExternalForcing,
236         & usingPCoords, usingZCoords, setCenterDr,
237         & nonHydrostatic, globalFiles,
238         & allowFreezing, groundAtK1,
239         & usePickupBeforeC35, debugMode,
240         & readPickupWithTracer, writePickupWithTracer
241        LOGICAL usingCartesianGrid        LOGICAL usingCartesianGrid
242        LOGICAL usingSphericalPolarGrid        LOGICAL usingSphericalPolarGrid
243          LOGICAL usingCurvilinearGrid
244          LOGICAL usingSphericalPolarMTerms
245          LOGICAL useNHMTerms
246          LOGICAL no_slip_sides
247          LOGICAL no_slip_bottom
248          LOGICAL staggerTimeStep
249        LOGICAL momViscosity        LOGICAL momViscosity
250        LOGICAL momAdvection        LOGICAL momAdvection
251        LOGICAL momForcing        LOGICAL momForcing
252          LOGICAL momPressureForcing
253        LOGICAL useCoriolis        LOGICAL useCoriolis
254          LOGICAL vectorInvariantMomentum
255        LOGICAL tempDiffusion        LOGICAL tempDiffusion
256        LOGICAL tempAdvection        LOGICAL tempAdvection
257        LOGICAL tempForcing        LOGICAL tempForcing
258        LOGICAL saltDiffusion        LOGICAL saltDiffusion
259        LOGICAL saltAdvection        LOGICAL saltAdvection
260        LOGICAL saltForcing        LOGICAL saltForcing
261          LOGICAL useRealFreshWaterFlux
262          LOGICAL rigidLid
263          LOGICAL implicitFreeSurface
264          LOGICAL exactConserv
265          LOGICAL uniformLin_PhiSurf
266          LOGICAL momStepping
267          LOGICAL tempStepping
268          LOGICAL saltStepping
269          LOGICAL tr1Stepping
270          LOGICAL metricTerms
271          LOGICAL useConstantF
272          LOGICAL useBetaPlaneF
273          LOGICAL useSphereF
274          LOGICAL useEnergyConservingCoriolis
275          LOGICAL useJamartWetPoints
276          LOGICAL implicitDiffusion
277          LOGICAL implicitViscosity
278          LOGICAL multiDimAdvection
279          LOGICAL forcing_In_AB
280          LOGICAL doThetaClimRelax
281          LOGICAL doSaltClimRelax
282          LOGICAL doTr1ClimRelax
283          LOGICAL periodicExternalForcing
284          LOGICAL usingPCoords
285          LOGICAL usingZCoords
286          LOGICAL setCenterDr
287          LOGICAL nonHydrostatic
288          LOGICAL globalFiles
289          LOGICAL allowFreezing
290          LOGICAL groundAtK1
291          LOGICAL usePickupBeforeC35
292          LOGICAL debugMode
293          LOGICAL readPickupWithTracer
294          LOGICAL writePickupWithTracer
295    
296  C--   COMMON /PARM_R/ "Real" valued parameters used by the model.  C--   COMMON /PARM_R/ "Real" valued parameters used by the model.
297  C     cg2dTargetResidual  C     gg2dTargetResidual
298  C               - Target residual for cg2d solver.  C          :: Target residual for cg2d solver; no unit (RHS normalisation)
299  C     delZ      - Vertical grid spacing ( m ) - delZ is the distance  C     cg2dTargetResWunit
300  C                 between "w" surfaces.  C          :: Target residual for cg2d solver; W unit (No RHS normalisation)
301  C     delX      - Separation between cell faces (m) or (deg), depending  C     cg3dTargetResidual
302    C               :: Target residual for cg3d solver.
303    C     cg2dpcOffDFac :: Averaging weight for preconditioner off-diagonal.
304    C     Note. 20th May 1998
305    C           I made a weird discovery! In the model paper we argue
306    C           for the form of the preconditioner used here ( see
307    C           A Finite-volume, Incompressible Navier-Stokes Model
308    C           ...., Marshall et. al ). The algebra gives a simple
309    C           0.5 factor for the averaging of ac and aCw to get a
310    C           symmettric pre-conditioner. By using a factor of 0.51
311    C           i.e. scaling the off-diagonal terms in the
312    C           preconditioner down slightly I managed to get the
313    C           number of iterations for convergence in a test case to
314    C           drop form 192 -> 134! Need to investigate this further!
315    C           For now I have introduced a parameter cg2dpcOffDFac which
316    C           defaults to 0.51 but can be set at runtime.
317    C     delP      :: Vertical grid spacing ( Pa ).
318    C     delZ      :: Vertical grid spacing ( m  ).
319    C     delR      :: Vertical grid spacing ( units of r ).
320    C     delRc     :: Vertical grid spacing between cell centers (r unit).
321    C     delX      :: Separation between cell faces (m) or (deg), depending
322  C     delY        on input flags.  C     delY        on input flags.
323  C     gravity   - Accel. due to gravity ( m/s^2 )  C     gravity   :: Accel. due to gravity ( m/s^2 )
324  C     ronil     - Reference density  C     recip_gravity and its inverse
325  C     startTime - Start time for model ( s )  C     gBaro     :: Accel. due to gravity used in barotropic equation ( m/s^2 )
326  C     phiMin    - Latitude of southern most cell face.  C     rhoNil    :: Reference density for the linear equation of state
327  C     thetaMin  - Longitude of western most cell face (this  C     rhoConst  :: Vertically constant reference density
328    C     rhoConstFresh :: Constant reference density for fresh water (rain)
329    C     startTime :: Start time for model ( s )
330    C     phiMin    :: Latitude of southern most cell face.
331    C     thetaMin  :: Longitude of western most cell face (this
332  C                 is an "inert" parameter but it is included  C                 is an "inert" parameter but it is included
333  C                 to make geographical references simple.)  C                 to make geographical references simple.)
334  C     rSphere   - Radius of sphere for a spherical polar grid ( m ).  C     rSphere   :: Radius of sphere for a spherical polar grid ( m ).
335  C     f0        - Reference coriolis parameter ( 1/s )  C     recip_RSphere  :: Reciprocal radius of sphere ( m ).
336    C     f0        :: Reference coriolis parameter ( 1/s )
337  C                 ( Southern edge f for beta plane )  C                 ( Southern edge f for beta plane )
338  C     beta      - df/dy ( s^-1.m^-1 )  C     beta      :: df/dy ( s^-1.m^-1 )
339  C     viscAh    - Eddy viscosity coeff. for mixing of  C     omega     :: Angular velocity ( rad/s )
340    C     viscAh    :: Eddy viscosity coeff. for mixing of
341  C                 momentum laterally ( m^2/s )  C                 momentum laterally ( m^2/s )
342  C     viscAz    - Eddy viscosity coeff. for mixing of  C     viscAz    :: Eddy viscosity coeff. for mixing of
343  C                 momentum vertically ( m^2/s )  C                 momentum vertically ( m^2/s )
344  C     viscA4    - Biharmonic viscosity coeff. for mixing of  C     viscAp    :: Eddy viscosity coeff. for mixing of
345    C                 momentum vertically ( Pa^2/s )
346    C     viscAr    :: Eddy viscosity coeff. for mixing of
347    C                 momentum vertically ( units of r^2/s )
348    C     viscA4    :: Biharmonic viscosity coeff. for mixing of
349  C                 momentum laterally ( m^4/s )  C                 momentum laterally ( m^4/s )
350  C     diffKhT   - Laplacian diffusion coeff. for mixing of  C     diffKhT   :: Laplacian diffusion coeff. for mixing of
351  C                 heat laterally ( m^2/s )  C                 heat laterally ( m^2/s )
352  C     diffKzT   - Laplacian diffusion coeff. for mixing of  C     diffKzT   :: Laplacian diffusion coeff. for mixing of
353  C                 heat vertically ( m^2/s )  C                 heat vertically ( m^2/s )
354  C     diffK4T   - Biharmonic diffusion coeff. for mixing of  C     diffKpT   :: Laplacian diffusion coeff. for mixing of
355    C                 heat vertically ( Pa^2/s )
356    C     diffKrT   :: Laplacian diffusion coeff. for mixing of
357    C                 heat vertically ( units of r^2/s )
358    C     diffK4T   :: Biharmonic diffusion coeff. for mixing of
359  C                 heat laterally ( m^4/s )  C                 heat laterally ( m^4/s )
360  C     diffKhS  -  Laplacian diffusion coeff. for mixing of  C     diffKhS  ::  Laplacian diffusion coeff. for mixing of
361  C                 salt laterally ( m^2/s )  C                 salt laterally ( m^2/s )
362  C     diffKzS   - Laplacian diffusion coeff. for mixing of  C     diffKzS   :: Laplacian diffusion coeff. for mixing of
363  C                 salt vertically ( m^2/s )  C                 salt vertically ( m^2/s )
364  C     diffK4S   - Biharmonic diffusion coeff. for mixing of  C     diffKpS   :: Laplacian diffusion coeff. for mixing of
365    C                 salt vertically ( Pa^2/s )
366    C     diffKrS   :: Laplacian diffusion coeff. for mixing of
367    C                 salt vertically ( units of r^2/s )
368    C     diffK4S   :: Biharmonic diffusion coeff. for mixing of
369  C                 salt laterally ( m^4/s )  C                 salt laterally ( m^4/s )
370  C     deltaT    - Default timestep ( s )  C     deltaT    :: Default timestep ( s )
371  C     deltaTMom    - Timestep for momemtum equations ( s )  C     deltaTClock  :: Timestep used as model "clock". This determines the
372  C     deltaTtracer - Timestep for tracer equations ( s )  C                    IO frequencies and is used in tagging output. It can
373  C     tauCD     - CD scheme coupling timescale ( 1/s )  C                    be totally different to the dynamical time. Typically
374  C     rCD       - CD scheme normalised coupling parameter ( 0-1 )  C                    it will be the deep-water timestep for accelerated runs.
375  C     GMmaxslope  - max. slope allowed in GM/Redi tensor  C                    Frequency of checkpointing and dumping of the model state
376  C     GMlength  - Length to use in Visbeck et al. formula for K  C                    are referenced to this clock. ( s )
377  C     GMalpha   - alpha to use in Visbeck et al. formula for K  C     deltaTMom    :: Timestep for momemtum equations ( s )
378  C     GMdepth   - Depth over which to integrate Richardson # (Visbeck et al.)  C     deltaTtracer :: Timestep for tracer equations ( s )
379  C     GMbackground - background value of GM/Redi coefficient  C     deltaTfreesurf :: Timestep for free-surface equation ( s )
380  C     startTime - Starting time for this integration ( s ).  C     freesurfFac  :: Parameter to turn implicit free surface term on or off
381  C     endTime   - Ending time for this integration ( s ).  C                    freesurfac = 1. uses implicit free surface
382  C     chkPtFreq - Frequency of check pointing ( s ).  C                    freesurfac = 0. uses rigid lid
383  C     dumpFreq  - Frequency with which model state is written to  C     implicSurfPress :: parameter of the Crank-Nickelson time stepping :
384  C                 post-processing files ( s ).  C                     Implicit part of Surface Pressure Gradient ( 0-1 )
385        COMMON /PARM_R/ cg2dTargetResidual, delZ, delX, delY, deltaT,  C     implicDiv2Dflow :: parameter of the Crank-Nickelson time stepping :
386       & deltaTmom, deltaTtracer, abeps, startTime, phiMin, thetaMin,  C                     Implicit part of barotropic flow Divergence ( 0-1 )
387       & rSphere, f0, fCori, beta, viscAh, viscAz, viscA4, diffKhT, diffKzT,  C     hFacMin      :: Minimum fraction size of a cell (affects hFacC etc...)
388       & diffK4T, diffKhS, diffKzS, diffK4S, delT, tauCD, rCD,  C     hFacMinDz    :: Minimum dimesional size of a cell (affects hFacC etc..., m)
389       & GMmaxslope,GMlength,GMalpha,GMdepth,GMkbackground,  C     hFacMinDp    :: Minimum dimesional size of a cell (affects hFacC etc..., Pa)
390       & gravity, rhonil, tRef, sRef,  C     hFacMinDr    :: Minimum dimesional size of a cell (affects hFacC etc..., units of r)
391       & endTime, chkPtFreq, dumpFreq  C     hFacInf      :: Threshold (inf and sup) for fraction size of surface cell
392    C     hFacSup        that control vanishing and creating levels
393    C     tauCD        :: CD scheme coupling timescale ( 1/s )
394    C     rCD          :: CD scheme normalised coupling parameter ( 0-1 )
395    C     startTime     :: Starting time for this integration ( s ).
396    C     endTime       :: Ending time for this integration ( s ).
397    C     chkPtFreq     :: Frequency of rolling check pointing ( s ).
398    C     pChkPtFreq    :: Frequency of permanent check pointing ( s ).
399    C     dumpFreq      :: Frequency with which model state is written to
400    C                     post-processing files ( s ).
401    C     diagFreq      :: Frequency with which model writes diagnostic output
402    C                     of intermediate quantities.
403    C     afFacMom      :: Advection of momentum term tracer parameter
404    C     vfFacMom      :: Momentum viscosity tracer parameter
405    C     pfFacMom      :: Momentum pressure forcing tracer parameter
406    C     cfFacMom      :: Coriolis term tracer parameter
407    C     foFacMom      :: Momentum forcing tracer parameter
408    C     mtFacMom      :: Metric terms tracer parameter
409    C     cosPower      :: Power of cosine of latitude to multiply viscosity
410    C     cAdjFreq      :: Frequency of convective adjustment
411    C
412    C     taveFreq      :: Frequency with which time-averaged model state
413    C                      is written to post-processing files ( s ).
414    C     tave_lastIter :: (for state variable only) fraction of the last time
415    C                      step (of each taveFreq period) put in the time average.
416    C                      (fraction for 1rst iter = 1 - tave_lastIter)
417    C     tauThetaClimRelax :: Relaxation to climatology time scale ( s ).
418    C     lambdaThetaClimRelax :: Inverse time scale for relaxation ( 1/s ).
419    C     tauSaltClimRelax :: Relaxation to climatology time scale ( s ).
420    C     lambdaSaltClimRelax :: Inverse time scale for relaxation ( 1/s ).
421    C     externForcingPeriod :: Is the period of which forcing varies (eg. 1 month)
422    C     externForcingCycle :: Is the repeat time of the forcing (eg. 1 year)
423    C                          (note: externForcingCycle must be an integer
424    C                           number times externForcingPeriod)
425    C     convertFW2Salt :: salinity, used to convert Fresh-Water Flux to Salt Flux
426    C                       (use model surface (local) value if set to -1)
427    C     temp_EvPrRn :: temperature of Rain & Evap.
428    C     salt_EvPrRn :: salinity of Rain & Evap.
429    C     trac_EvPrRn :: tracer concentration in Rain & Evap.
430    C        (notes: a) tracer content of Rain/Evap only used if both
431    C                     NonLin_FrSurf & useRealFreshWater are set.
432    C                b) use model surface (local) value if set to UNSET_RL)
433    C     horiVertRatio      :: Ratio on units in vertical to units in horizontal.
434    C     recip_horiVertRatio  ( 1 if horiz in m and vertical in m ).
435    C                          ( g*rho if horiz in m and vertical in Pa ).
436    C     Ro_SeaLevel        :: standard position of Sea-Level in "R" coordinate, used as
437    C                          starting value (k=1) for vertical coordinate (rf(1)=Ro_SeaLevel)
438    C     bottomDragLinear   :: Drag coefficient built in to core dynamics
439    C      --"-"--  Quadratic  ( linear: 1/s, quadratic: 1/m )
440          COMMON /PARM_R/ cg2dTargetResidual, cg2dTargetResWunit,
441         & cg2dpcOffDFac, cg3dTargetResidual,
442         & delP, delZ, delR, delRc, delX, delY,
443         & deltaT, deltaTmom, deltaTtracer, deltaTfreesurf, deltaTClock,
444         & abeps, startTime,
445         & phiMin, thetaMin, rSphere, recip_RSphere, f0, beta,
446         & fCori, fCoriG, fCoriCos,
447         & viscAh,  viscAz,  viscA4,  viscAr, viscAstrain, viscAtension,
448         & diffKhT, diffKzT, diffK4T, diffKrT,
449         & diffKhS, diffKzS, diffK4S, diffKrS,
450         & delT, tauCD, rCD, freeSurfFac, implicSurfPress, implicDiv2Dflow,
451         & hFacMin, hFacMinDz, hFacInf, hFacSup,
452         & gravity, recip_Gravity, gBaro, rhonil, recip_rhonil,
453         & recip_rhoConst, rhoConst,
454         & rhoConstFresh, convertEmP2rUnit, tRef, sRef,
455         & endTime, chkPtFreq, pchkPtFreq, dumpFreq,
456         & diagFreq, taveFreq, tave_lastIter, monitorFreq,
457         & afFacMom, vfFacMom, pfFacMom, cfFacMom, foFacMom, mtFacMom,
458         & cosPower, cAdjFreq, omega,
459         & tauThetaClimRelax, lambdaThetaClimRelax,
460         & tauSaltClimRelax, lambdaSaltClimRelax,
461         & tauTr1ClimRelax, lambdaTr1ClimRelax,
462         & externForcingCycle, externForcingPeriod,
463         & convertFW2Salt, temp_EvPrRn, salt_EvPrRn, trac_EvPrRn,
464         & viscAp, diffKpT, diffKpS, hFacMinDr, hFacMinDp,
465         & horiVertRatio, recip_horiVertRatio,
466         & ivdc_kappa, Ro_SeaLevel,
467         & bottomDragLinear,bottomDragQuadratic
468    
469        _RL cg2dTargetResidual        _RL cg2dTargetResidual
470        _RL delZ(Nz)        _RL cg2dTargetResWunit
471          _RL cg3dTargetResidual
472          _RL cg2dpcOffDFac
473          _RL delZ(Nr)
474          _RL delP(Nr)
475          _RL delR(Nr)
476          _RL delRc(Nr+1)
477        _RL delX(Nx)        _RL delX(Nx)
478        _RL delY(Ny)        _RL delY(Ny)
479        _RL deltaT        _RL deltaT
480          _RL deltaTClock
481        _RL deltaTmom        _RL deltaTmom
482        _RL deltaTtracer        _RL deltaTtracer
483          _RL deltaTfreesurf
484        _RL abeps        _RL abeps
485        _RL phiMin        _RL phiMin
486        _RL thetaMin        _RL thetaMin
487        _RL rSphere        _RL rSphere
488          _RL recip_RSphere
489        _RL f0        _RL f0
490          _RL freeSurfFac
491          _RL implicSurfPress
492          _RL implicDiv2Dflow
493          _RL hFacMin
494          _RL hFacMinDz
495          _RL hFacMinDp
496          _RL hFacMinDr
497          _RL hFacInf
498          _RL hFacSup
499        _RL beta        _RL beta
500        _RL viscAh        _RL viscAh
501          _RL viscAstrain
502          _RL viscAtension
503        _RL viscAz        _RL viscAz
504          _RL viscAp
505          _RL viscAr
506        _RL viscA4        _RL viscA4
507        _RL diffKhT        _RL diffKhT
508          _RL diffKrT
509        _RL diffKzT        _RL diffKzT
510          _RL diffKpT
511        _RL diffK4T        _RL diffK4T
512        _RL diffKhS        _RL diffKhS
513          _RL diffKrS
514        _RL diffKzS        _RL diffKzS
515          _RL diffKpS
516        _RL diffK4S        _RL diffK4S
517        _RL delt        _RL delt
518        _RL tauCD        _RL tauCD
519        _RL rCD        _RL rCD
       _RL GMmaxslope  
       _RL GMlength  
       _RL GMalpha  
       _RL GMdepth  
       _RL GMkbackground  
520        _RL gravity        _RL gravity
521          _RL recip_gravity
522          _RL gBaro
523        _RL rhonil        _RL rhonil
524        _RL tRef(Nz)        _RL recip_rhonil
525        _RL sRef(Nz)        _RL rhoConst
526        _RL Fcori(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)        _RL recip_rhoConst
527          _RL rhoConstFresh
528          _RL convertEmP2rUnit
529          _RL tRef(Nr)
530          _RL sRef(Nr)
531          _RS fCori(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
532          _RS fCoriG(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
533          _RS fCoriCos(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
534        _RL startTime        _RL startTime
535        _RL endTime        _RL endTime
536        _RL chkPtFreq        _RL chkPtFreq
537          _RL pChkPtFreq
538        _RL dumpFreq        _RL dumpFreq
539          _RL diagFreq
540          _RL taveFreq
541          _RL tave_lastIter
542          _RL monitorFreq
543          _RL afFacMom
544          _RL vfFacMom
545          _RL pfFacMom
546          _RL cfFacMom
547          _RL foFacMom
548          _RL mTFacMom
549          _RL cosPower
550          _RL cAdjFreq
551          _RL omega
552          _RL tauThetaClimRelax
553          _RL lambdaThetaClimRelax
554          _RL tauSaltClimRelax
555          _RL lambdaSaltClimRelax
556          _RL tauTr1ClimRelax
557          _RL lambdaTr1ClimRelax
558          _RL externForcingCycle
559          _RL externForcingPeriod
560          _RL convertFW2Salt
561          _RL temp_EvPrRn
562          _RL salt_EvPrRn
563          _RL trac_EvPrRn
564          _RL horiVertRatio
565          _RL recip_horiVertRatio
566          _RL ivdc_kappa
567          _RL Ro_SeaLevel
568          _RL bottomDragLinear
569          _RL bottomDragQuadratic
570    
571        COMMON /PARM_A/ HeatCapacity_Cp,        COMMON /PARM_A/ HeatCapacity_Cp,recip_Cp,
572       &                Lamba_theta       &                Lamba_theta
573        _RL HeatCapacity_Cp        _RL HeatCapacity_Cp
574        _RL Lamba_theta        _RL Lamba_theta
575          _RL recip_Cp
576    
577    CmlC Equation of State (polynomial coeffients)
578    Cml      COMMON /PARM_EOS_NL/ eosC,eosSig0,eosRefT,eosRefS
579    Cml      _RL eosC(9,Nr+1),eosSig0(Nr+1),eosRefT(Nr+1),eosRefS(Nr+1)
580    CmlC Linear equation of state
581    CmlC     tAlpha    :: Linear EOS thermal expansion coefficient ( 1/degree ).
582    CmlC     sBeta     :: Linear EOS haline contraction coefficient.
583    Cml      COMMON /PARM_EOS_LIN/ tAlpha,sBeta,eosType
584    Cml      _RL tAlpha
585    Cml      _RL sBeta
586    
587    C Atmospheric physical parameters (Ideal Gas EOS, ...)
588    C     atm_po    :: standard reference pressure
589    C     atm_cp    :: specific heat (Cp) of the (dry) air at constant pressure
590    C     atm_kappa :: kappa = R/Cp (R: constant of Ideal Gas EOS)
591    C     Integr_GeoPot :: option to select the way we integrate the geopotential
592    C                     (still a subject of discussions ...)
593          COMMON /PARM_ATM/ atm_cp, atm_kappa, atm_po,
594         &                  Integr_GeoPot
595          _RL atm_cp, atm_kappa, atm_po
596          INTEGER Integr_GeoPot
597    
598    C Logical flags for selecting packages
599          LOGICAL useKPP
600          LOGICAL useGMRedi
601          LOGICAL useOBCS
602          LOGICAL useAIM
603          LOGICAL useGrdchk
604          LOGICAL useECCO
605          LOGICAL useSHAP_FILT
606          LOGICAL useZONAL_FILT
607          LOGICAL useFLT
608          LOGICAL usePTRACERS
609          COMMON /PARM_PACKAGES/
610         &        useKPP, useGMRedi, useOBCS, useAIM, useECCO,
611         &        useSHAP_FILT, useZONAL_FILT, useGrdchk, useFLT,
612         &        usePTRACERS
613    
 C Equation of State (polynomial coeffients)  
       COMMON /PARM_EOS_NL/ eosC,eosSig0,eosRefT,eosRefS  
       _RL eosC(Nz+1,9),eosSig0(Nz+1),eosRefT(Nz+1),eosRefS(Nz+1)  
 C Linear equation of state  
 C     tAlpha    - Linear EOS thermal expansion coefficient ( 1/degree ).  
 C     sBeta     - Linear EOS haline contraction coefficient.  
       COMMON /PARM_EOS_LIN/ tAlpha,sBeta  
       _RL tAlpha  
       _RL sBeta  

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