/[MITgcm]/MITgcm/model/inc/PARAMS.h
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revision 1.1 by cnh, Wed Apr 22 19:15:31 1998 UTC revision 1.117 by jmc, Tue Jul 6 00:51:35 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.
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    C     tempAdvScheme       :: Temp. Horiz.Advection scheme selector
130    C     tempVertAdvScheme   :: Temp. Vert. Advection scheme selector
131    C     saltAdvScheme       :: Salt. Horiz.advection scheme selector
132    C     saltVertAdvScheme   :: Salt. Vert. Advection scheme selector
133    C     debugLevel          :: debug level selector: higher -> more writing
134    
135        COMMON /PARM_I/        COMMON /PARM_I/
136       &        cg2dMaxIters,       &        cg2dMaxIters,
137       &        cg2dChkResFreq,       &        cg2dChkResFreq,
138       &        nIter0, nTimeSteps,       &        cg3dMaxIters,
139       &        numStepsPerPickup       &        cg3dChkResFreq,
140         &        nIter0, nTimeSteps, nEndIter,
141         &        numStepsPerPickup,
142         &        writeStatePrec, nCheckLev,
143         &        writeBinaryPrec, readBinaryPrec,
144         &        nonlinFreeSurf, select_rStar,
145         &        tempAdvScheme, tempVertAdvScheme,
146         &        saltAdvScheme, saltVertAdvScheme,
147         &        tracerAdvScheme,
148         &        debugLevel
149        INTEGER cg2dMaxIters        INTEGER cg2dMaxIters
150        INTEGER cg2dChkResFreq        INTEGER cg2dChkResFreq
151          INTEGER cg3dMaxIters
152          INTEGER cg3dChkResFreq
153        INTEGER nIter0        INTEGER nIter0
154        INTEGER nTimeSteps        INTEGER nTimeSteps
155          INTEGER nEndIter
156        INTEGER numStepsPerPickup        INTEGER numStepsPerPickup
157          INTEGER writeStatePrec
158          INTEGER writeBinaryPrec
159          INTEGER readBinaryPrec
160          INTEGER nCheckLev
161          INTEGER nonlinFreeSurf
162          INTEGER select_rStar
163          INTEGER tempAdvScheme, tempVertAdvScheme
164          INTEGER saltAdvScheme, saltVertAdvScheme
165          INTEGER tracerAdvScheme
166          INTEGER debugLevel
167    
168    C
169          INTEGER debLevZero
170          PARAMETER(debLevZero=0)
171          INTEGER debLevA
172          PARAMETER(debLevA=1)
173          INTEGER debLevB
174          PARAMETER(debLevB=2)
175    
176  C--   COMMON /PARM_L/ Logical valued parameters used by the model.  C--   COMMON /PARM_L/ Logical valued parameters used by the model.
177  C     usingCartesianGrid - If TRUE grid generation will be in a cartesian  C     usingCartesianGrid :: If TRUE grid generation will be in a cartesian
178  C                          coordinate frame.  C                          coordinate frame.
179  C     usingSphericalPolarGrid - If TRUE grid generation will be in a  C     usingSphericalPolarGrid :: If TRUE grid generation will be in a
180  C                               spherical polar frame.  C                               spherical polar frame.
181  C     momViscosity  - Flag which turns momentum friction terms on and off.  C     usingCylindricalGrid :: If TRUE grid generation will be Cylindrical
182  C     momAdvection  - Flag which turns advection of momentum on and off.  C     no_slip_sides :: Impose "no-slip" at lateral boundaries.
183  C     momForcing    - Flag which turns external forcing of momentum on  C     no_slip_bottom :: Impose "no-slip" at bottom boundary.
184    C     staggerTimeStep :: enable a Stagger time stepping T,S Rho then U,V
185    C     momViscosity  :: Flag which turns momentum friction terms on and off.
186    C     momAdvection  :: Flag which turns advection of momentum on and off.
187    C     momForcing    :: Flag which turns external forcing of momentum on
188  C                     and off.  C                     and off.
189  C     useCoriolis   - Flag which turns the coriolis terms on and off.  C     momPressureForcing :: Flag which turns pressure term in momentum equation
190  C     tempDiffusion - Flag which turns diffusion of temperature on  C                          on and off.
191    C     metricTerms   :: Flag which turns metric terms on or off.
192    C     usingSphericalPolarMTerms :: If TRUE use spherical polar metric terms.
193    C     useNHMTerms :: If TRUE use non-hydrostatic metric terms.
194    C     useCoriolis   :: Flag which turns the coriolis terms on and off.
195    C     tempDiffusion :: Flag which turns diffusion of temperature on
196  C                     and off.  C                     and off.
197  C     tempAdvection - Flag which turns advection of temperature on  C     tempAdvection :: Flag which turns advection of temperature on
198  C                     and off.  C                     and off.
199  C     tempForcing   - Flag which turns external forcing of temperature on  C     tempForcing   :: Flag which turns external forcing of temperature on
200  C                     and off.  C                     and off.
201  C     saltDiffusion - Flag which turns diffusion of salinit on  C     saltDiffusion :: Flag which turns diffusion of salinity on
202  C                     and off.  C                     and off.
203  C     saltAdvection - Flag which turns advection of salinit on  C     saltAdvection :: Flag which turns advection of salinity on
204  C                     and off.  C                     and off.
205  C     saltForcing   - Flag which turns external forcing of salinit on  C     saltForcing   :: Flag which turns external forcing of salinity on
206  C                     and off.  C                     and off.
207    C     useRealFreshWaterFlux :: if True (=Natural BCS), treats P+R-E flux
208    C                         as a real Fresh Water (=> changes the Sea Level)
209    C                         if F, converts P+R-E to salt flux (no SL effect)
210    C     rigidLid            :: Set to true to use rigid lid
211    C     implicitFreeSurface :: Set to true to use implcit free surface
212    C     exactConserv        :: Set to true to conserve exactly the total Volume
213    C     uniformLin_PhiSurf  :: Set to true to use a uniform Bo_surf in the
214    C                           linear relation Phi_surf = Bo_surf*eta
215    C     momStepping   :: Turns momentum equation time-stepping off
216    C     tempStepping  :: Turns temperature equation time-stepping off
217    C     saltStepping  :: Turns salinity equation time-stepping off
218    C     tr1Stepping   :: Turns passive tracer 1 time-stepping on/off
219    C     useConstantF  :: Coriolis parameter set to f0
220    C     useBetaPlaneF :: Coriolis parameter set to f0 + beta.y
221    C     useSphereF    :: Coriolis parameter set to 2.omega.sin(phi)
222    C     useCDscheme   :: use CD-scheme to calculate Coriolis terms.
223    C     useJamartWetPoints :: Use wet-point method for Coriolis (Jamart and Ozer, 1986)
224    C     useJamartMomAdv :: Use wet-point method for V.I. non-linear term
225    C     SadournyCoriolis :: use the enstrophy conserving scheme by Sadourny
226    C     upwindVorticity :: bias interpolation of vorticity in the Coriolis term
227    C     highOrderVorticity :: use 3rd/4th order interp. of vorticity in Coriolis
228    C     useAbsVorticity :: work with f+zeta in Coriolis terms
229    C     implicitDiffusion :: Turns implicit vertical diffusion on
230    C     implicitViscosity :: Turns implicit vertical viscosity on
231    C     tempImplVertAdv :: Turns on implicit vertical advection for Temperature
232    C     saltImplVertAdv :: Turns on implicit vertical advection for Salinity
233    C     momImplVertAdv  :: Turns on implicit vertical advection for Momentum
234    C     multiDimAdvection :: Flag that enable multi-dimension advection
235    C     forcing_In_AB :: if False, put forcing (Temp,Salt,Tracers) contribution
236    C                      out off Adams-Bashforth time stepping.
237    C     doThetaClimRelax :: Set true if relaxation to temperature
238    C                        climatology is required.
239    C     doSaltClimRelax  :: Set true if relaxation to salinity
240    C                        climatology is required.
241    C     periodicExternalForcing :: Set true if forcing is time-dependant
242    C     usingPCoords     :: Set to indicate that we are working in pressure
243    C                        coords. (jmc: is it still used ?)
244    C     usingZCoords     :: Set to indicate that we are working in height
245    C                        coords. (jmc: is it still used ?)
246    C     useDynP_inEos_Zc :: use the dynamical pressure in EOS (with Z-coord.)
247    C                         this requires specific code for restart & exchange
248    C     setCenterDr    :: set cell Center depth and put Interface at the middle
249    C     nonHydrostatic :: Using non-hydrostatic terms
250    C     quasiHydrostatic :: Using non-hydrostatic terms in hydrostatic algorithm
251    C     globalFiles    :: Selects between "global" and "tiled" files
252    C     useSingleCpuIO :: On SGI platforms, option globalFiles is either
253    C                       slow (f77) or does not work (f90).  When
254    C                       useSingleCpuIO is set, mdsio_writefield.F
255    C                       outputs from master mpi process only.
256    C     allowFreezing  :: Allows surface water to freeze and form ice
257    C     useOldFreezing :: use the old version (before checkpoint52a_pre, 2003-11-12)
258    C     groundAtK1  :: put the surface(k=1) at the Lower Boundary (=ground)
259        COMMON /PARM_L/ usingCartesianGrid, usingSphericalPolarGrid,        COMMON /PARM_L/ usingCartesianGrid, usingSphericalPolarGrid,
260       & momViscosity, momAdvection, momForcing, useCoriolis,       & usingCurvilinearGrid, usingCylindricalGrid,
261         & no_slip_sides,no_slip_bottom,
262         & staggerTimeStep,
263         & momViscosity, momAdvection, momForcing, useCoriolis,
264         & momPressureForcing, vectorInvariantMomentum,
265       & tempDiffusion, tempAdvection, tempForcing,       & tempDiffusion, tempAdvection, tempForcing,
266       & saltDiffusion, saltAdvection, saltForcing       & saltDiffusion, saltAdvection, saltForcing,
267         & useRealFreshWaterFlux,
268         & rigidLid, implicitFreeSurface, exactConserv, uniformLin_PhiSurf,
269         & momStepping, tempStepping, saltStepping, tr1Stepping,
270         & metricTerms, usingSphericalPolarMTerms, useNHMTerms,
271         & useConstantF, useBetaPlaneF, useSphereF,
272         & useCDscheme,
273         & useEnergyConservingCoriolis, useJamartWetPoints, useJamartMomAdv,
274         & SadournyCoriolis, upwindVorticity, highOrderVorticity,
275         & useAbsVorticity,
276         & implicitDiffusion, implicitViscosity,
277         & tempImplVertAdv, saltImplVertAdv, momImplVertAdv,
278         & multiDimAdvection, forcing_In_AB,
279         & doThetaClimRelax, doSaltClimRelax, doTr1ClimRelax,
280         & periodicExternalForcing,
281         & usingPCoords, usingZCoords, useDynP_inEos_Zc, setCenterDr,
282         & nonHydrostatic, quasiHydrostatic, globalFiles, useSingleCpuIO,
283         & allowFreezing, useOldFreezing, groundAtK1,
284         & usePickupBeforeC35, usePickupBeforeC54, debugMode,
285         & readPickupWithTracer, writePickupWithTracer
286        LOGICAL usingCartesianGrid        LOGICAL usingCartesianGrid
287        LOGICAL usingSphericalPolarGrid        LOGICAL usingSphericalPolarGrid
288          LOGICAL usingCylindricalGrid
289          LOGICAL usingCurvilinearGrid
290          LOGICAL usingSphericalPolarMTerms
291          LOGICAL useNHMTerms
292          LOGICAL no_slip_sides
293          LOGICAL no_slip_bottom
294          LOGICAL staggerTimeStep
295        LOGICAL momViscosity        LOGICAL momViscosity
296        LOGICAL momAdvection        LOGICAL momAdvection
297        LOGICAL momForcing        LOGICAL momForcing
298          LOGICAL momPressureForcing
299        LOGICAL useCoriolis        LOGICAL useCoriolis
300          LOGICAL vectorInvariantMomentum
301        LOGICAL tempDiffusion        LOGICAL tempDiffusion
302        LOGICAL tempAdvection        LOGICAL tempAdvection
303        LOGICAL tempForcing        LOGICAL tempForcing
304        LOGICAL saltDiffusion        LOGICAL saltDiffusion
305        LOGICAL saltAdvection        LOGICAL saltAdvection
306        LOGICAL saltForcing        LOGICAL saltForcing
307          LOGICAL useRealFreshWaterFlux
308          LOGICAL rigidLid
309          LOGICAL implicitFreeSurface
310          LOGICAL exactConserv
311          LOGICAL uniformLin_PhiSurf
312          LOGICAL momStepping
313          LOGICAL tempStepping
314          LOGICAL saltStepping
315          LOGICAL tr1Stepping
316          LOGICAL metricTerms
317          LOGICAL useConstantF
318          LOGICAL useBetaPlaneF
319          LOGICAL useSphereF
320          LOGICAL useCDscheme
321          LOGICAL useEnergyConservingCoriolis
322          LOGICAL useJamartWetPoints
323          LOGICAL useJamartMomAdv
324          LOGICAL SadournyCoriolis
325          LOGICAL upwindVorticity
326          LOGICAL highOrderVorticity
327          LOGICAL useAbsVorticity
328          LOGICAL implicitDiffusion
329          LOGICAL implicitViscosity
330          LOGICAL tempImplVertAdv
331          LOGICAL saltImplVertAdv
332          LOGICAL momImplVertAdv
333          LOGICAL multiDimAdvection
334          LOGICAL forcing_In_AB
335          LOGICAL doThetaClimRelax
336          LOGICAL doSaltClimRelax
337          LOGICAL doTr1ClimRelax
338          LOGICAL periodicExternalForcing
339          LOGICAL usingPCoords
340          LOGICAL usingZCoords
341          LOGICAL useDynP_inEos_Zc
342          LOGICAL setCenterDr
343          LOGICAL nonHydrostatic
344          LOGICAL quasiHydrostatic
345          LOGICAL globalFiles
346          LOGICAL useSingleCpuIO
347          LOGICAL allowFreezing
348          LOGICAL useOldFreezing
349          LOGICAL groundAtK1
350          LOGICAL usePickupBeforeC35
351          LOGICAL usePickupBeforeC54
352          LOGICAL debugMode
353          LOGICAL readPickupWithTracer
354          LOGICAL writePickupWithTracer
355    
356  C--   COMMON /PARM_R/ "Real" valued parameters used by the model.  C--   COMMON /PARM_R/ "Real" valued parameters used by the model.
357  C     cg2dTargetResidual  C     gg2dTargetResidual
358  C               - Target residual for cg2d solver.  C          :: Target residual for cg2d solver; no unit (RHS normalisation)
359  C     delZ      - Vertical grid spacing (Pa) - delZ is the distance  C     cg2dTargetResWunit
360  C                 between "w" surfaces.  C          :: Target residual for cg2d solver; W unit (No RHS normalisation)
361  C     delX      - Separation between cell faces (m) or (deg), depending  C     cg3dTargetResidual
362    C               :: Target residual for cg3d solver.
363    C     cg2dpcOffDFac :: Averaging weight for preconditioner off-diagonal.
364    C     Note. 20th May 1998
365    C           I made a weird discovery! In the model paper we argue
366    C           for the form of the preconditioner used here ( see
367    C           A Finite-volume, Incompressible Navier-Stokes Model
368    C           ...., Marshall et. al ). The algebra gives a simple
369    C           0.5 factor for the averaging of ac and aCw to get a
370    C           symmettric pre-conditioner. By using a factor of 0.51
371    C           i.e. scaling the off-diagonal terms in the
372    C           preconditioner down slightly I managed to get the
373    C           number of iterations for convergence in a test case to
374    C           drop form 192 -> 134! Need to investigate this further!
375    C           For now I have introduced a parameter cg2dpcOffDFac which
376    C           defaults to 0.51 but can be set at runtime.
377    C     delR      :: Vertical grid spacing ( units of r ).
378    C     delRc     :: Vertical grid spacing between cell centers (r unit).
379    C     delX      :: Separation between cell faces (m) or (deg), depending
380  C     delY        on input flags.  C     delY        on input flags.
381  C     gravity   - Accel. due to gravity ( m/s^2 )  C     gravity   :: Accel. due to gravity ( m/s^2 )
382  C     ronil     - Reference density  C     recip_gravity and its inverse
383  C     startTime - Start time for model  C     gBaro     :: Accel. due to gravity used in barotropic equation ( m/s^2 )
384  C     oBandBeg  - Offline bands start and end times.  C     rhoNil    :: Reference density for the linear equation of state
385  C     oBandEnd  C     rhoConst  :: Vertically constant reference density
386  C     oPeriodLength - Lenght of offline period.  C     rhoConstFresh :: Constant reference density for fresh water (rain)
387  C     phiMin    - Latitude of southern most cell face.  C     startTime :: Start time for model ( s )
388  C     thetaMin  - Longitude of western most cell face (this  C     phiMin    :: Latitude of southern most cell face.
389    C     thetaMin  :: Longitude of western most cell face (this
390  C                 is an "inert" parameter but it is included  C                 is an "inert" parameter but it is included
391  C                 to make geographical references simple.)  C                 to make geographical references simple.)
392  C     rSphere   - Radius of sphere for a spherical polar grid.  C     rSphere   :: Radius of sphere for a spherical polar grid ( m ).
393  C     f0        - Reference coriolis parameter ( 1/s )  C     recip_RSphere  :: Reciprocal radius of sphere ( m ).
394    C     f0        :: Reference coriolis parameter ( 1/s )
395  C                 ( Southern edge f for beta plane )  C                 ( Southern edge f for beta plane )
396  C     beta      - df/dy ( s^-1.m^-1 )  C     beta      :: df/dy ( s^-1.m^-1 )
397  C     viscAh    - Eddy viscosity coeff. for mixing of  C     omega     :: Angular velocity ( rad/s )
398    C     rotationPeriod :: Rotation period (s) (= 2.pi/omega)
399    C     viscAh    :: Eddy viscosity coeff. for mixing of
400    C                 momentum laterally ( m^2/s )
401    C     viscAr    :: Eddy viscosity coeff. for mixing of
402    C                 momentum vertically ( units of r^2/s )
403    C     viscA4    :: Biharmonic viscosity coeff. for mixing of
404    C                 momentum laterally ( m^4/s )
405    C     viscC2leith :: Leith non-dimensional viscosity factor
406    C     viscAhMax :: Maximum eddy viscosity coeff. for mixing of
407  C                 momentum laterally ( m^2/s )  C                 momentum laterally ( m^2/s )
408  C     viscAz    - Eddy viscosity coeff. for mixing of  C     viscA4Max :: Maximum biharmonic viscosity coeff. for mixing of
 C                 momentum vertically ( m^2/s )  
 C     viscA4    - Biharmonic viscosity coeff. for mixing of  
409  C                 momentum laterally ( m^4/s )  C                 momentum laterally ( m^4/s )
410  C     diffKhT   - Laplacian diffusion coeff. for mixing of  C     viscAhGrid:: non-dimensional grid-size dependent viscosity
411    C     viscA4Grid:: non-dimensional grid-size dependent bi-harmonic viscosity
412    C     viscC4leith :: Leith non-dimensional viscosity factor
413    C     diffKhT   :: Laplacian diffusion coeff. for mixing of
414  C                 heat laterally ( m^2/s )  C                 heat laterally ( m^2/s )
415  C     diffKzT   - Laplacian diffusion coeff. for mixing of  C     diffKrT   :: Laplacian diffusion coeff. for mixing of
416  C                 heat vertically ( m^2/s )  C                 heat vertically ( units of r^2/s )
417  C     diffK4T   - Biharmonic diffusion coeff. for mixing of  C     diffK4T   :: Biharmonic diffusion coeff. for mixing of
418  C                 heat laterally ( m^4/s )  C                 heat laterally ( m^4/s )
419  C     diffKhS  -  Laplacian diffusion coeff. for mixing of  C     diffKhS  ::  Laplacian diffusion coeff. for mixing of
420  C                 salt laterally ( m^2/s )  C                 salt laterally ( m^2/s )
421  C     diffKzS   - Laplacian diffusion coeff. for mixing of  C     diffKrS   :: Laplacian diffusion coeff. for mixing of
422  C                 salt vertically ( m^2/s )  C                 salt vertically ( units of r^2/s )
423  C     diffK4S   - Biharmonic diffusion coeff. for mixing of  C     diffK4S   :: Biharmonic diffusion coeff. for mixing of
424  C                 salt laterally ( m^4/s )  C                 salt laterally ( m^4/s )
425  C     delt      - Timestep ( s )  C     diffKrBL79surf :: T/S surface diffusivity (m^2/s) Bryan and Lewis, 1979
426  C     tauCD     - CD scheme coupling timescale ( 1/s )  C     diffKrBL79deep :: T/S deep diffusivity (m^2/s) Bryan and Lewis, 1979
427  C     rCD       - CD scheme normalised coupling parameter ( 0-1 )  C     diffKrBL79scl  :: depth scale for arctan fn (m) Bryan and Lewis, 1979
428  C     startTime - Starting time for this integration ( s ).  C     diffKrBL79Ho   :: depth offset for arctan fn (m) Bryan and Lewis, 1979
429  C     endTime   - Ending time for this integration ( s ).  C     deltaT    :: Default timestep ( s )
430  C     chkPtFreq - Frequency of check pointing ( s ).  C     deltaTClock  :: Timestep used as model "clock". This determines the
431  C     dumpFreq  - Frequency with which model state is written to  C                    IO frequencies and is used in tagging output. It can
432  C                 post-processing files ( s ).  C                    be totally different to the dynamical time. Typically
433        COMMON /PARM_R/ cg2dTargetResidual, delZ, delX, delY,  C                    it will be the deep-water timestep for accelerated runs.
434       & deltaTmom, deltaTtracer, abeps, startTime, oBandBeg, oBandEnd,  C                    Frequency of checkpointing and dumping of the model state
435       & oPeriodLength, phiMin, thetaMin, rSphere, f0, fCori, beta,  C                    are referenced to this clock. ( s )
436       & viscAh, viscAz, viscA4, diffKhT, diffKzT, diffK4T,  C     deltaTMom    :: Timestep for momemtum equations ( s )
437       & diffKhS, diffKzS, diffK4S, delT, tauCD, rCD,  C     deltaTtracer :: Timestep for tracer equations ( s )
438       & tAlpha, sBeta, gravity, rhonil, tRef, sRef,  C     deltaTfreesurf :: Timestep for free-surface equation ( s )
439       & endTime, chkPtFreq, dumpFreq  C     freesurfFac  :: Parameter to turn implicit free surface term on or off
440        REAL cg2dTargetResidual  C                    freesurfac = 1. uses implicit free surface
441        REAL delZ(Nz)  C                    freesurfac = 0. uses rigid lid
442        REAL delX(Nx)  C     implicSurfPress :: parameter of the Crank-Nickelson time stepping :
443        REAL delY(Ny)  C                     Implicit part of Surface Pressure Gradient ( 0-1 )
444        REAL deltaTmom  C     implicDiv2Dflow :: parameter of the Crank-Nickelson time stepping :
445        REAL deltaTtracer  C                     Implicit part of barotropic flow Divergence ( 0-1 )
446        REAL abeps  C     hFacMin      :: Minimum fraction size of a cell (affects hFacC etc...)
447        REAL oBandBeg(nOBands),oBandEnd(nOBands)  C     hFacMinDz    :: Minimum dimesional size of a cell (affects hFacC etc..., m)
448        REAL oPeriodLength  C     hFacMinDp    :: Minimum dimesional size of a cell (affects hFacC etc..., Pa)
449        REAL phiMin  C     hFacMinDr    :: Minimum dimesional size of a cell (affects hFacC etc..., units of r)
450        REAL thetaMin  C     hFacInf      :: Threshold (inf and sup) for fraction size of surface cell
451        REAL rSphere  C     hFacSup        that control vanishing and creating levels
452        REAL f0  C     tauCD        :: CD scheme coupling timescale ( 1/s )
453        _RL  beta  C     rCD          :: CD scheme normalised coupling parameter ( 0-1 )
454        REAL viscAh  C     startTime     :: Starting time for this integration ( s ).
455        REAL viscAz  C     endTime       :: Ending time for this integration ( s ).
456        REAL viscA4  C     chkPtFreq     :: Frequency of rolling check pointing ( s ).
457        REAL diffKhT  C     pChkPtFreq    :: Frequency of permanent check pointing ( s ).
458        REAL diffKzT  C     dumpFreq      :: Frequency with which model state is written to
459        REAL diffK4T  C                     post-processing files ( s ).
460        REAL diffKhS  C     diagFreq      :: Frequency with which model writes diagnostic output
461        REAL diffKzS  C                     of intermediate quantities.
462        REAL diffK4S  C     afFacMom      :: Advection of momentum term tracer parameter
463        REAL delt  C     vfFacMom      :: Momentum viscosity tracer parameter
464        REAL tauCD  C     pfFacMom      :: Momentum pressure forcing tracer parameter
465        REAL rCD  C     cfFacMom      :: Coriolis term tracer parameter
466        REAL tAlpha  C     foFacMom      :: Momentum forcing tracer parameter
467        REAL sBeta  C     mtFacMom      :: Metric terms tracer parameter
468        REAL gravity  C     cosPower      :: Power of cosine of latitude to multiply viscosity
469        REAL rhonil  C     cAdjFreq      :: Frequency of convective adjustment
470        REAL tRef(Nz)  C
471        REAL sRef(Nz)  C     taveFreq      :: Frequency with which time-averaged model state
472        real Fcori(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)  C                      is written to post-processing files ( s ).
473        REAL startTime  C     tave_lastIter :: (for state variable only) fraction of the last time
474        REAL endTime  C                      step (of each taveFreq period) put in the time average.
475        REAL chkPtFreq  C                      (fraction for 1rst iter = 1 - tave_lastIter)
476        REAL dumpFreq  C     tauThetaClimRelax :: Relaxation to climatology time scale ( s ).
477        COMMON /PARM_A/ HeatCapacity_Cp,  C     lambdaThetaClimRelax :: Inverse time scale for relaxation ( 1/s ).
478       &                Lamba_theta  C     tauSaltClimRelax :: Relaxation to climatology time scale ( s ).
479        REAL HeatCapacity_Cp  C     lambdaSaltClimRelax :: Inverse time scale for relaxation ( 1/s ).
480        REAL Lamba_theta  C     latBandClimRelax :: latitude band where Relaxation to Clim. is applied,
481    C                         i.e. where |yC| <= latBandClimRelax
482    C     externForcingPeriod :: Is the period of which forcing varies (eg. 1 month)
483    C     externForcingCycle :: Is the repeat time of the forcing (eg. 1 year)
484    C                          (note: externForcingCycle must be an integer
485    C                           number times externForcingPeriod)
486    C     convertFW2Salt :: salinity, used to convert Fresh-Water Flux to Salt Flux
487    C                       (use model surface (local) value if set to -1)
488    C     temp_EvPrRn :: temperature of Rain & Evap.
489    C     salt_EvPrRn :: salinity of Rain & Evap.
490    C     trac_EvPrRn :: tracer concentration in Rain & Evap.
491    C        (notes: a) tracer content of Rain/Evap only used if both
492    C                     NonLin_FrSurf & useRealFreshWater are set.
493    C                b) use model surface (local) value if set to UNSET_RL)
494    C     horiVertRatio      :: Ratio on units in vertical to units in horizontal.
495    C     recip_horiVertRatio  ( 1 if horiz in m and vertical in m ).
496    C                          ( g*rho if horiz in m and vertical in Pa ).
497    C     Ro_SeaLevel        :: standard position of Sea-Level in "R" coordinate, used as
498    C                          starting value (k=1) for vertical coordinate (rf(1)=Ro_SeaLevel)
499    C     bottomDragLinear   :: Drag coefficient built in to core dynamics
500    C      --"-"--  Quadratic  ( linear: 1/s, quadratic: 1/m )
501          COMMON /PARM_R/ cg2dTargetResidual, cg2dTargetResWunit,
502         & cg2dpcOffDFac, cg3dTargetResidual,
503         & delR, delRc, delX, delY,
504         & deltaT, deltaTmom, deltaTtracer, deltaTfreesurf, deltaTClock,
505         & abeps, startTime,
506         & phiMin, thetaMin, rSphere, recip_RSphere, f0, beta,
507         & fCori, fCoriG, fCoriCos,
508         & viscAh,  viscAhMax, viscAhGrid, viscC2leith,
509         & viscA4,  viscA4Max, viscA4Grid, viscC4leith,
510         & viscAr, viscAstrain, viscAtension,
511         & diffKhT, diffK4T, diffKrT,
512         & diffKhS, diffK4S, diffKrS,
513         & diffKrBL79surf, diffKrBL79deep, diffKrBL79scl, diffKrBL79Ho,
514         & delT, tauCD, rCD, freeSurfFac, implicSurfPress, implicDiv2Dflow,
515         & hFacMin, hFacMinDz, hFacInf, hFacSup,
516         & gravity, recip_Gravity, gBaro, rhonil, recip_rhonil,
517         & recip_rhoConst, rhoConst,
518         & rhoConstFresh, convertEmP2rUnit, tRef, sRef,
519         & endTime, chkPtFreq, pchkPtFreq, dumpFreq, adjDumpFreq,
520         & diagFreq, taveFreq, tave_lastIter, monitorFreq,
521         & afFacMom, vfFacMom, pfFacMom, cfFacMom, foFacMom, mtFacMom,
522         & cosPower, cAdjFreq, omega, rotationPeriod,
523         & tauThetaClimRelax, lambdaThetaClimRelax,
524         & tauSaltClimRelax, lambdaSaltClimRelax,
525         & tauTr1ClimRelax, lambdaTr1ClimRelax, latBandClimRelax,
526         & externForcingCycle, externForcingPeriod,
527         & convertFW2Salt, temp_EvPrRn, salt_EvPrRn, trac_EvPrRn,
528         & hFacMinDr, hFacMinDp,
529         & horiVertRatio, recip_horiVertRatio,
530         & ivdc_kappa, Ro_SeaLevel,
531         & bottomDragLinear,bottomDragQuadratic,
532         & tCyl
533    
534          _RL cg2dTargetResidual
535          _RL cg2dTargetResWunit
536          _RL cg3dTargetResidual
537          _RL cg2dpcOffDFac
538          _RL delR(Nr)
539          _RL delRc(Nr+1)
540          _RL delX(Nx)
541          _RL delY(Ny)
542          _RL deltaT
543          _RL deltaTClock
544          _RL deltaTmom
545          _RL deltaTtracer
546          _RL deltaTfreesurf
547          _RL abeps
548          _RL phiMin
549          _RL thetaMin
550          _RL rSphere
551          _RL recip_RSphere
552          _RL f0
553          _RL freeSurfFac
554          _RL implicSurfPress
555          _RL implicDiv2Dflow
556          _RL hFacMin
557          _RL hFacMinDz
558          _RL hFacMinDp
559          _RL hFacMinDr
560          _RL hFacInf
561          _RL hFacSup
562          _RL beta
563          _RL viscAh
564          _RL viscAhMax
565          _RL viscAhGrid
566          _RL viscC2leith
567          _RL viscAstrain
568          _RL viscAtension
569          _RL viscAr
570          _RL viscA4
571          _RL viscA4Max
572          _RL viscA4Grid
573          _RL viscC4leith
574          _RL diffKhT
575          _RL diffKrT
576          _RL diffK4T
577          _RL diffKhS
578          _RL diffKrS
579          _RL diffK4S
580          _RL diffKrBL79surf
581          _RL diffKrBL79deep
582          _RL diffKrBL79scl
583          _RL diffKrBL79Ho
584          _RL delt
585          _RL tauCD
586          _RL rCD
587          _RL gravity
588          _RL recip_gravity
589          _RL gBaro
590          _RL rhonil
591          _RL recip_rhonil
592          _RL rhoConst
593          _RL recip_rhoConst
594          _RL rhoConstFresh
595          _RL convertEmP2rUnit
596          _RL tRef(Nr)
597          _RL sRef(Nr)
598          _RS fCori(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
599          _RS fCoriG(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
600          _RS fCoriCos(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
601          _RL startTime
602          _RL endTime
603          _RL chkPtFreq
604          _RL pChkPtFreq
605          _RL dumpFreq
606          _RL adjDumpFreq
607          _RL diagFreq
608          _RL taveFreq
609          _RL tave_lastIter
610          _RL monitorFreq
611          _RL afFacMom
612          _RL vfFacMom
613          _RL pfFacMom
614          _RL cfFacMom
615          _RL foFacMom
616          _RL mTFacMom
617          _RL cosPower
618          _RL cAdjFreq
619          _RL omega
620          _RL rotationPeriod
621          _RL tauThetaClimRelax
622          _RL lambdaThetaClimRelax
623          _RL tauSaltClimRelax
624          _RL lambdaSaltClimRelax
625          _RL tauTr1ClimRelax
626          _RL lambdaTr1ClimRelax
627          _RL latBandClimRelax
628          _RL externForcingCycle
629          _RL externForcingPeriod
630          _RL convertFW2Salt
631          _RL temp_EvPrRn
632          _RL salt_EvPrRn
633          _RL trac_EvPrRn
634          _RL horiVertRatio
635          _RL recip_horiVertRatio
636          _RL ivdc_kappa
637          _RL Ro_SeaLevel
638          _RL bottomDragLinear
639          _RL bottomDragQuadratic
640          _RL tCyl
641    
642    C--   COMMON /PARM_A/ Thermodynamics constants ?
643          COMMON /PARM_A/ HeatCapacity_Cp,recip_Cp
644          _RL HeatCapacity_Cp
645          _RL recip_Cp
646    
647    C--   COMMON /PARM_ATM/ Atmospheric physical parameters (Ideal Gas EOS, ...)
648    C     celsius2K :: convert centigrade (Celsius) degree to Kelvin
649    C     atm_Po    :: standard reference pressure
650    C     atm_Cp    :: specific heat (Cp) of the (dry) air at constant pressure
651    C     atm_Rd    :: gas constant for dry air
652    C     atm_kappa :: kappa = R/Cp (R: constant of Ideal Gas EOS)
653    C     atm_Rq    :: water vapour specific volume anomaly relative to dry air
654    C                  (e.g. typical value = (29/18 -1) 10^-3 with q [g/kg])
655    C     integr_GeoPot :: option to select the way we integrate the geopotential
656    C                     (still a subject of discussions ...)
657    C     selectFindRoSurf :: select the way surf. ref. pressure (=Ro_surf) is
658    C             derived from the orography. Implemented: 0,1 (see INI_P_GROUND)
659          COMMON /PARM_ATM/
660         &            celsius2K,
661         &            atm_Cp, atm_Rd, atm_kappa, atm_Rq, atm_Po,
662         &            integr_GeoPot, selectFindRoSurf
663          _RL celsius2K
664          _RL atm_Po, atm_Cp, atm_Rd, atm_kappa, atm_Rq
665          INTEGER integr_GeoPot, selectFindRoSurf
666    
667    C Logical flags for selecting packages
668          LOGICAL useKPP
669          LOGICAL useGMRedi
670          LOGICAL useOBCS
671          LOGICAL useAIM
672          LOGICAL useLand
673          LOGICAL useGrdchk
674          LOGICAL useECCO
675          LOGICAL useSHAP_FILT
676          LOGICAL useZONAL_FILT
677          LOGICAL useFLT
678          LOGICAL usePTRACERS
679          LOGICAL useSBO
680          LOGICAL useSEAICE
681          LOGICAL useBulkForce
682          LOGICAL useThSIce
683          LOGICAL usefizhi
684          LOGICAL usegridalt
685          LOGICAL usediagnostics
686          LOGICAL useEBM
687          COMMON /PARM_PACKAGES/
688         &        useKPP, useGMRedi, useOBCS, useAIM, useLand, useECCO,
689         &        useSHAP_FILT, useZONAL_FILT, useGrdchk, useFLT,
690         &        usePTRACERS,  useSBO, useSEAICE, useThSIce, useBulkForce,
691         &        usefizhi,  usegridalt, usediagnostics, useEBM
692    
693    C     Run-time flags for early-initialization of MNC
694          LOGICAL
695         &     useMNC,
696         &     mnc_use_indir, mnc_use_outdir, mnc_outdir_date,
697         &     mnc_echo_gvtypes, mnc_pickup_write, mnc_pickup_read,
698         &     mnc_use_for_mon
699          CHARACTER*(MAX_LEN_FNAM) mnc_outdir_str
700          CHARACTER*(MAX_LEN_FNAM) mnc_indir_str
701          COMMON /PARM_MNC/
702         &     useMNC,
703         &     mnc_use_indir, mnc_use_outdir, mnc_outdir_date,
704         &     mnc_echo_gvtypes, mnc_pickup_write, mnc_pickup_read,
705         &     mnc_outdir_str, mnc_indir_str,
706         &     mnc_use_for_mon
707    
708    
709    CEH3 ;;; Local Variables: ***
710    CEH3 ;;; mode:fortran ***
711    CEH3 ;;; End: ***
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