/[MITgcm]/MITgcm/model/inc/PARAMS.h
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revision 1.6 by adcroft, Wed May 20 21:29:31 1998 UTC revision 1.101 by molod, Thu Jan 29 14:10:50 2004 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, 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.
113    C     cg3dMaxIters        :: Maximum number of iterations in the
114    C                           three-dimensional con. grad solver.
115    C     cg3dChkResFreq      :: Frequency with which to check residual
116  C                           in con. grad solver.  C                           in con. grad solver.
117  C     nIter0              - Start time-step number of for this run  C     nIter0              :: Start time-step number of for this run
118  C     nTimeSteps          - Number of timesteps to execute  C     nTimeSteps          :: Number of timesteps to execute
119  C     numStepsPerPickup   - For offline setup. Frequency of pickup  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 ( m ) - 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 ( s )  C     gBaro     :: Accel. due to gravity used in barotropic equation ( m/s^2 )
362  C     phiMin    - Latitude of southern most cell face.  C     rhoNil    :: Reference density for the linear equation of state
363  C     thetaMin  - Longitude of western most cell face (this  C     rhoConst  :: Vertically constant reference density
364    C     rhoConstFresh :: Constant reference density for fresh water (rain)
365    C     startTime :: Start time for model ( s )
366    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 ( m ).  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     diffKhT   :: Laplacian diffusion coeff. for mixing of
384  C                 heat laterally ( m^2/s )  C                 heat laterally ( m^2/s )
385  C     diffKzT   - Laplacian diffusion coeff. for mixing of  C     diffKrT   :: Laplacian diffusion coeff. for mixing of
386  C                 heat vertically ( m^2/s )  C                 heat vertically ( units of r^2/s )
387  C     diffK4T   - Biharmonic diffusion coeff. for mixing of  C     diffK4T   :: Biharmonic diffusion coeff. for mixing of
388  C                 heat laterally ( m^4/s )  C                 heat laterally ( m^4/s )
389  C     diffKhS  -  Laplacian diffusion coeff. for mixing of  C     diffKhS  ::  Laplacian diffusion coeff. for mixing of
390  C                 salt laterally ( m^2/s )  C                 salt laterally ( m^2/s )
391  C     diffKzS   - Laplacian diffusion coeff. for mixing of  C     diffKrS   :: Laplacian diffusion coeff. for mixing of
392  C                 salt vertically ( m^2/s )  C                 salt vertically ( units of r^2/s )
393  C     diffK4S   - Biharmonic diffusion coeff. for mixing of  C     diffK4S   :: Biharmonic diffusion coeff. for mixing of
394  C                 salt laterally ( m^4/s )  C                 salt laterally ( m^4/s )
395  C     deltaT    - Default timestep ( s )  C     deltaT    :: Default timestep ( s )
396  C     deltaTMom    - Timestep for momemtum equations ( s )  C     deltaTClock  :: Timestep used as model "clock". This determines the
397  C     deltaTtracer - Timestep for tracer equations ( s )  C                    IO frequencies and is used in tagging output. It can
398  C     tauCD     - CD scheme coupling timescale ( 1/s )  C                    be totally different to the dynamical time. Typically
399  C     rCD       - CD scheme normalised coupling parameter ( 0-1 )  C                    it will be the deep-water timestep for accelerated runs.
400  C     GMmaxslope  - max. slope allowed in GM/Redi tensor  C                    Frequency of checkpointing and dumping of the model state
401  C     GMlength  - Length to use in Visbeck et al. formula for K  C                    are referenced to this clock. ( s )
402  C     GMalpha   - alpha to use in Visbeck et al. formula for K  C     deltaTMom    :: Timestep for momemtum equations ( s )
403  C     GMdepth   - Depth over which to integrate Richardson # (Visbeck et al.)  C     deltaTtracer :: Timestep for tracer equations ( s )
404  C     GMbackground - background value of GM/Redi coefficient  C     deltaTfreesurf :: Timestep for free-surface equation ( s )
405  C     startTime - Starting time for this integration ( s ).  C     freesurfFac  :: Parameter to turn implicit free surface term on or off
406  C     endTime   - Ending time for this integration ( s ).  C                    freesurfac = 1. uses implicit free surface
407  C     chkPtFreq - Frequency of check pointing ( s ).  C                    freesurfac = 0. uses rigid lid
408  C     dumpFreq  - Frequency with which model state is written to  C     implicSurfPress :: parameter of the Crank-Nickelson time stepping :
409  C                 post-processing files ( s ).  C                     Implicit part of Surface Pressure Gradient ( 0-1 )
410        COMMON /PARM_R/ cg2dTargetResidual, delZ, delX, delY, deltaT,  C     implicDiv2Dflow :: parameter of the Crank-Nickelson time stepping :
411       & deltaTmom, deltaTtracer, abeps, startTime, phiMin, thetaMin,  C                     Implicit part of barotropic flow Divergence ( 0-1 )
412       & rSphere, f0, fCori, beta, viscAh, viscAz, viscA4, diffKhT, diffKzT,  C     hFacMin      :: Minimum fraction size of a cell (affects hFacC etc...)
413       & diffK4T, diffKhS, diffKzS, diffK4S, delT, tauCD, rCD,  C     hFacMinDz    :: Minimum dimesional size of a cell (affects hFacC etc..., m)
414       & GMmaxslope,GMlength,GMalpha,GMdepth,GMkbackground,  C     hFacMinDp    :: Minimum dimesional size of a cell (affects hFacC etc..., Pa)
415       & gravity, rhonil, tRef, sRef,  C     hFacMinDr    :: Minimum dimesional size of a cell (affects hFacC etc..., units of r)
416       & endTime, chkPtFreq, dumpFreq  C     hFacInf      :: Threshold (inf and sup) for fraction size of surface cell
417    C     hFacSup        that control vanishing and creating levels
418    C     tauCD        :: CD scheme coupling timescale ( 1/s )
419    C     rCD          :: CD scheme normalised coupling parameter ( 0-1 )
420    C     startTime     :: Starting time for this integration ( s ).
421    C     endTime       :: Ending time for this integration ( s ).
422    C     chkPtFreq     :: Frequency of rolling check pointing ( s ).
423    C     pChkPtFreq    :: Frequency of permanent check pointing ( s ).
424    C     dumpFreq      :: Frequency with which model state is written to
425    C                     post-processing files ( s ).
426    C     diagFreq      :: Frequency with which model writes diagnostic output
427    C                     of intermediate quantities.
428    C     afFacMom      :: Advection of momentum term tracer parameter
429    C     vfFacMom      :: Momentum viscosity tracer parameter
430    C     pfFacMom      :: Momentum pressure forcing tracer parameter
431    C     cfFacMom      :: Coriolis term tracer parameter
432    C     foFacMom      :: Momentum forcing tracer parameter
433    C     mtFacMom      :: Metric terms tracer parameter
434    C     cosPower      :: Power of cosine of latitude to multiply viscosity
435    C     cAdjFreq      :: Frequency of convective adjustment
436    C
437    C     taveFreq      :: Frequency with which time-averaged model state
438    C                      is written to post-processing files ( s ).
439    C     tave_lastIter :: (for state variable only) fraction of the last time
440    C                      step (of each taveFreq period) put in the time average.
441    C                      (fraction for 1rst iter = 1 - tave_lastIter)
442    C     tauThetaClimRelax :: Relaxation to climatology time scale ( s ).
443    C     lambdaThetaClimRelax :: Inverse time scale for relaxation ( 1/s ).
444    C     tauSaltClimRelax :: Relaxation to climatology time scale ( s ).
445    C     lambdaSaltClimRelax :: Inverse time scale for relaxation ( 1/s ).
446    C     latBandClimRelax :: latitude band where Relaxation to Clim. is applied,
447    C                         i.e. where |yC| <= latBandClimRelax
448    C     externForcingPeriod :: Is the period of which forcing varies (eg. 1 month)
449    C     externForcingCycle :: Is the repeat time of the forcing (eg. 1 year)
450    C                          (note: externForcingCycle must be an integer
451    C                           number times externForcingPeriod)
452    C     convertFW2Salt :: salinity, used to convert Fresh-Water Flux to Salt Flux
453    C                       (use model surface (local) value if set to -1)
454    C     temp_EvPrRn :: temperature of Rain & Evap.
455    C     salt_EvPrRn :: salinity of Rain & Evap.
456    C     trac_EvPrRn :: tracer concentration in Rain & Evap.
457    C        (notes: a) tracer content of Rain/Evap only used if both
458    C                     NonLin_FrSurf & useRealFreshWater are set.
459    C                b) use model surface (local) value if set to UNSET_RL)
460    C     horiVertRatio      :: Ratio on units in vertical to units in horizontal.
461    C     recip_horiVertRatio  ( 1 if horiz in m and vertical in m ).
462    C                          ( g*rho if horiz in m and vertical in Pa ).
463    C     Ro_SeaLevel        :: standard position of Sea-Level in "R" coordinate, used as
464    C                          starting value (k=1) for vertical coordinate (rf(1)=Ro_SeaLevel)
465    C     bottomDragLinear   :: Drag coefficient built in to core dynamics
466    C      --"-"--  Quadratic  ( linear: 1/s, quadratic: 1/m )
467          COMMON /PARM_R/ cg2dTargetResidual, cg2dTargetResWunit,
468         & cg2dpcOffDFac, cg3dTargetResidual,
469         & delR, delRc, delX, delY,
470         & deltaT, deltaTmom, deltaTtracer, deltaTfreesurf, deltaTClock,
471         & abeps, startTime,
472         & phiMin, thetaMin, rSphere, recip_RSphere, f0, beta,
473         & fCori, fCoriG, fCoriCos,
474         & viscAh,  viscA4,  viscAr, viscAstrain, viscAtension,
475         & diffKhT, diffK4T, diffKrT,
476         & diffKhS, diffK4S, diffKrS,
477         & delT, tauCD, rCD, freeSurfFac, implicSurfPress, implicDiv2Dflow,
478         & hFacMin, hFacMinDz, hFacInf, hFacSup,
479         & gravity, recip_Gravity, gBaro, rhonil, recip_rhonil,
480         & recip_rhoConst, rhoConst,
481         & rhoConstFresh, convertEmP2rUnit, tRef, sRef,
482         & endTime, chkPtFreq, pchkPtFreq, dumpFreq,
483         & diagFreq, taveFreq, tave_lastIter, monitorFreq,
484         & afFacMom, vfFacMom, pfFacMom, cfFacMom, foFacMom, mtFacMom,
485         & cosPower, cAdjFreq, omega, rotationPeriod,
486         & tauThetaClimRelax, lambdaThetaClimRelax,
487         & tauSaltClimRelax, lambdaSaltClimRelax,
488         & tauTr1ClimRelax, lambdaTr1ClimRelax, latBandClimRelax,
489         & externForcingCycle, externForcingPeriod,
490         & convertFW2Salt, temp_EvPrRn, salt_EvPrRn, trac_EvPrRn,
491         & hFacMinDr, hFacMinDp,
492         & horiVertRatio, recip_horiVertRatio,
493         & ivdc_kappa, Ro_SeaLevel,
494         & bottomDragLinear,bottomDragQuadratic
495    
496        _RL cg2dTargetResidual        _RL cg2dTargetResidual
497        _RL delZ(Nz)        _RL cg2dTargetResWunit
498          _RL cg3dTargetResidual
499          _RL cg2dpcOffDFac
500          _RL delR(Nr)
501          _RL delRc(Nr+1)
502        _RL delX(Nx)        _RL delX(Nx)
503        _RL delY(Ny)        _RL delY(Ny)
504        _RL deltaT        _RL deltaT
505          _RL deltaTClock
506        _RL deltaTmom        _RL deltaTmom
507        _RL deltaTtracer        _RL deltaTtracer
508          _RL deltaTfreesurf
509        _RL abeps        _RL abeps
510        _RL phiMin        _RL phiMin
511        _RL thetaMin        _RL thetaMin
512        _RL rSphere        _RL rSphere
513          _RL recip_RSphere
514        _RL f0        _RL f0
515          _RL freeSurfFac
516          _RL implicSurfPress
517          _RL implicDiv2Dflow
518          _RL hFacMin
519          _RL hFacMinDz
520          _RL hFacMinDp
521          _RL hFacMinDr
522          _RL hFacInf
523          _RL hFacSup
524        _RL beta        _RL beta
525        _RL viscAh        _RL viscAh
526        _RL viscAz        _RL viscAstrain
527          _RL viscAtension
528          _RL viscAr
529        _RL viscA4        _RL viscA4
530        _RL diffKhT        _RL diffKhT
531        _RL diffKzT        _RL diffKrT
532        _RL diffK4T        _RL diffK4T
533        _RL diffKhS        _RL diffKhS
534        _RL diffKzS        _RL diffKrS
535        _RL diffK4S        _RL diffK4S
536        _RL delt        _RL delt
537        _RL tauCD        _RL tauCD
538        _RL rCD        _RL rCD
       _RL GMmaxslope  
       _RL GMlength  
       _RL GMalpha  
       _RL GMdepth  
       _RL GMkbackground  
539        _RL gravity        _RL gravity
540          _RL recip_gravity
541          _RL gBaro
542        _RL rhonil        _RL rhonil
543        _RL tRef(Nz)        _RL recip_rhonil
544        _RL sRef(Nz)        _RL rhoConst
545        _RL Fcori(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)        _RL recip_rhoConst
546          _RL rhoConstFresh
547          _RL convertEmP2rUnit
548          _RL tRef(Nr)
549          _RL sRef(Nr)
550          _RS fCori(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
551          _RS fCoriG(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
552          _RS fCoriCos(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
553        _RL startTime        _RL startTime
554        _RL endTime        _RL endTime
555        _RL chkPtFreq        _RL chkPtFreq
556          _RL pChkPtFreq
557        _RL dumpFreq        _RL dumpFreq
558          _RL diagFreq
559          _RL taveFreq
560          _RL tave_lastIter
561          _RL monitorFreq
562          _RL afFacMom
563          _RL vfFacMom
564          _RL pfFacMom
565          _RL cfFacMom
566          _RL foFacMom
567          _RL mTFacMom
568          _RL cosPower
569          _RL cAdjFreq
570          _RL omega
571          _RL rotationPeriod
572          _RL tauThetaClimRelax
573          _RL lambdaThetaClimRelax
574          _RL tauSaltClimRelax
575          _RL lambdaSaltClimRelax
576          _RL tauTr1ClimRelax
577          _RL lambdaTr1ClimRelax
578          _RL latBandClimRelax
579          _RL externForcingCycle
580          _RL externForcingPeriod
581          _RL convertFW2Salt
582          _RL temp_EvPrRn
583          _RL salt_EvPrRn
584          _RL trac_EvPrRn
585          _RL horiVertRatio
586          _RL recip_horiVertRatio
587          _RL ivdc_kappa
588          _RL Ro_SeaLevel
589          _RL bottomDragLinear
590          _RL bottomDragQuadratic
591    
592        COMMON /PARM_A/ HeatCapacity_Cp,  C--   COMMON /PARM_A/ Thermodynamics constants ?
593       &                Lamba_theta        COMMON /PARM_A/ HeatCapacity_Cp,recip_Cp
594        _RL HeatCapacity_Cp        _RL HeatCapacity_Cp
595        _RL Lamba_theta        _RL recip_Cp
596    
597    C--   COMMON /PARM_ATM/ Atmospheric physical parameters (Ideal Gas EOS, ...)
598    C     celsius2K :: convert centigrade (Celsius) degree to Kelvin
599    C     atm_Po    :: standard reference pressure
600    C     atm_Cp    :: specific heat (Cp) of the (dry) air at constant pressure
601    C     atm_Rd    :: gas constant for dry air
602    C     atm_kappa :: kappa = R/Cp (R: constant of Ideal Gas EOS)
603    C     atm_Rq    :: water vapour specific volume anomaly relative to dry air
604    C                  (e.g. typical value = (29/18 -1) 10^-3 with q [g/kg])
605    C     integr_GeoPot :: option to select the way we integrate the geopotential
606    C                     (still a subject of discussions ...)
607    C     selectFindRoSurf :: select the way surf. ref. pressure (=Ro_surf) is
608    C             derived from the orography. Implemented: 0,1 (see INI_P_GROUND)
609          COMMON /PARM_ATM/
610         &            celsius2K,
611         &            atm_Cp, atm_Rd, atm_kappa, atm_Rq, atm_Po,
612         &            integr_GeoPot, selectFindRoSurf
613          _RL celsius2K
614          _RL atm_Po, atm_Cp, atm_Rd, atm_kappa, atm_Rq
615          INTEGER integr_GeoPot, selectFindRoSurf
616    
617  C Equation of State (polynomial coeffients)  C Logical flags for selecting packages
618        COMMON /PARM_EOS_NL/ eosC,eosSig0,eosRefT,eosRefS        LOGICAL useKPP
619        _RL eosC(Nz+1,9),eosSig0(Nz+1),eosRefT(Nz+1),eosRefS(Nz+1)        LOGICAL useGMRedi
620  C Linear equation of state        LOGICAL useOBCS
621  C     tAlpha    - Linear EOS thermal expansion coefficient ( 1/degree ).        LOGICAL useAIM
622  C     sBeta     - Linear EOS haline contraction coefficient.        LOGICAL useLand
623        COMMON /PARM_EOS_LIN/ tAlpha,sBeta        LOGICAL useGrdchk
624        _RL tAlpha        LOGICAL useECCO
625        _RL sBeta        LOGICAL useSHAP_FILT
626          LOGICAL useZONAL_FILT
627          LOGICAL useFLT
628          LOGICAL usePTRACERS
629          LOGICAL useSBO
630          LOGICAL useSEAICE
631          LOGICAL useBulkForce
632          LOGICAL useThSIce
633          LOGICAL usefizhi
634          LOGICAL usegridalt
635          LOGICAL usediagnostics
636          COMMON /PARM_PACKAGES/
637         &        useKPP, useGMRedi, useOBCS, useAIM, useLand, useECCO,
638         &        useSHAP_FILT, useZONAL_FILT, useGrdchk, useFLT,
639         &        usePTRACERS,  useSBO, useSEAICE, useThSIce, useBulkForce,
640         &        usefizhi,  usegridalt, usediagnostics
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