/[MITgcm]/MITgcm/model/inc/GRID.h
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Revision 1.40 - (hide annotations) (download)
Sun Jan 31 17:32:10 2010 UTC (14 years, 4 months ago) by jmc
Branch: MAIN
CVS Tags: checkpoint62c, checkpoint62g, checkpoint62f, checkpoint62e, checkpoint62d, checkpoint62j, checkpoint62i, checkpoint62h
Changes since 1.39: +11 -11 lines
File MIME type: text/plain
change comments (recipricol -> reciprocal)

1 jmc 1.40 C $Header: /u/gcmpack/MITgcm/model/inc/GRID.h,v 1.39 2010/01/31 17:21:15 jmc Exp $
2 adcroft 1.15 C $Name: $
3 cnh 1.1 C
4 cnh 1.16 CBOP
5     C !ROUTINE: GRID.h
6     C !INTERFACE:
7     C include GRID.h
8     C !DESCRIPTION: \bv
9     C *==========================================================*
10 jmc 1.35 C | GRID.h
11     C | o Header file defining model grid.
12 cnh 1.16 C *==========================================================*
13 jmc 1.35 C | Model grid is defined for each process by reference to
14     C | the arrays set here.
15     C | Notes
16     C | =====
17     C | The standard MITgcm convention of westmost, southern most
18     C | and upper most having the (1,1,1) index is used here.
19     C | i.e.
20     C |----------------------------------------------------------
21     C | (1) Plan view schematic of model grid (top layer i.e. )
22     C | ================================= ( ocean surface )
23     C | ( or top of )
24     C | ( atmosphere )
25     C | This diagram shows the location of the model
26     C | prognostic variables on the model grid. The "T"
27     C | location is used for all tracers. The figure also
28     C | shows the southern most, western most indexing
29     C | convention that is used for all model variables.
30     C |
31     C |
32     C | V(i=1, V(i=Nx,
33     C | j=Ny+1, j=Ny+1,
34     C | k=1) k=1)
35     C | /|\ /|\ "PWX"
36     C | |---------|------------------etc.. |---- *---
37     C | | | * |
38     C |"PWY"*******************************etc.. **********"PWY"
39     C | | | * |
40     C | | | * |
41     C | | | * |
42     C |U(i=1, ==> x | x *==>U
43     C | j=Ny,| T(i=1, | T(i=Nx, *(i=Nx+1,
44     C | k=1) | j=Ny, | j=Ny, * |j=Ny,
45     C | | k=1) | k=1) * |k=1)
46     C |
47     C | . . .
48     C | . . .
49     C | . . .
50     C | e e * e
51     C | t t * t
52     C | c c * c
53     C | | | * |
54     C | | | * |
55     C |U(i=1, ==> x | x * |
56     C | j=2, | T(i=1, | T(i=Nx, * |
57     C | k=1) | j=2, | j=2, * |
58     C | | k=1) | k=1) * |
59     C | | | * |
60     C | | /|\ | /|\ * |
61     C | -----------|------------------etc.. |-----*---
62     C | | V(i=1, | V(i=Nx, * |
63     C | | j=2, | j=2, * |
64     C | | k=1) | k=1) * |
65     C | | | * |
66     C |U(i=1, ==> x ==>U(i=2, x *==>U
67     C | j=1, | T(i=1, | j=1, T(i=Nx, *(i=Nx+1,
68     C | k=1) | j=1, | k=1) j=1, * |j=1,
69     C | | k=1) | k=1) * |k=1)
70     C | | | * |
71     C | | /|\ | /|\ * |
72     C |"SB"++>|---------|------------------etc.. |-----*---
73     C | /+\ V(i=1, V(i=Nx, *
74     C | + j=1, j=1, *
75     C | + k=1) k=1) *
76     C | "WB" "PWX"
77     C |
78     C | N, y increasing northwards
79     C | /|\ j increasing northwards
80     C | |
81     C | |
82     C | ======>E, x increasing eastwards
83     C | i increasing eastwards
84     C |
85     C | i: East-west index
86     C | j: North-south index
87     C | k: up-down index
88     C | U: x-velocity (m/s)
89     C | V: y-velocity (m/s)
90     C | T: potential temperature (oC)
91     C | "SB": Southern boundary
92     C | "WB": Western boundary
93     C |"PWX": Periodic wrap around in X.
94     C |"PWY": Periodic wrap around in Y.
95     C |----------------------------------------------------------
96     C | (2) South elevation schematic of model grid
97     C | =======================================
98     C | This diagram shows the location of the model
99     C | prognostic variables on the model grid. The "T"
100     C | location is used for all tracers. The figure also
101     C | shows the upper most, western most indexing
102     C | convention that is used for all model variables.
103     C |
104     C | "WB"
105     C | +
106     C | +
107 adcroft 1.17 C | \+/ /|\ /|\ .
108 jmc 1.35 C |"UB"++>|-------- | -----------------etc.. | ----*---
109     C | | rVel(i=1, | rVel(i=Nx, * |
110     C | | j=1, | j=1, * |
111     C | | k=1) | k=1) * |
112     C | | | * |
113     C |U(i=1, ==> x ==>U(i=2, x *==>U
114     C | j=1, | T(i=1, | j=1, T(i=Nx, *(i=Nx+1,
115     C | k=1) | j=1, | k=1) j=1, * |j=1,
116     C | | k=1) | k=1) * |k=1)
117     C | | | * |
118     C | | /|\ | /|\ * |
119     C | |-------- | -----------------etc.. | ----*---
120     C | | rVel(i=1, | rVel(i=Nx, * |
121     C | | j=1, | j=1, * |
122     C | | k=2) | k=2) * |
123     C |
124     C | . . .
125     C | . . .
126     C | . . .
127     C | e e * e
128     C | t t * t
129     C | c c * c
130     C | | | * |
131     C | | | * |
132     C | | | * |
133     C | | | * |
134     C | | /|\ | /|\ * |
135     C | |-------- | -----------------etc.. | ----*---
136     C | | rVel(i=1, | rVel(i=Nx, * |
137     C | | j=1, | j=1, * |
138     C | | k=Nr) | k=Nr) * |
139     C |U(i=1, ==> x ==>U(i=2, x *==>U
140     C | j=1, | T(i=1, | j=1, T(i=Nx, *(i=Nx+1,
141     C | k=Nr)| j=1, | k=Nr) j=1, * |j=1,
142     C | | k=Nr) | k=Nr) * |k=Nr)
143     C | | | * |
144     C |"LB"++>==============================================
145     C | "PWX"
146     C |
147     C | Up increasing upwards.
148 adcroft 1.17 C |/|\ .
149 jmc 1.35 C | |
150     C | |
151     C | =====> E i increasing eastwards
152     C | | x increasing eastwards
153     C | |
154     C |\|/
155     C | Down,k increasing downwards.
156     C |
157     C | Note: r => height (m) => r increases upwards
158     C | r => pressure (Pa) => r increases downwards
159     C |
160     C |
161     C | i: East-west index
162     C | j: North-south index
163     C | k: up-down index
164     C | U: x-velocity (m/s)
165     C | rVel: z-velocity ( units of r )
166     C | The vertical velocity variable rVel is in units of
167     C | "r" the vertical coordinate. r in m will give
168     C | rVel m/s. r in Pa will give rVel Pa/s.
169     C | T: potential temperature (oC)
170     C | "UB": Upper boundary.
171     C | "LB": Lower boundary (always solid - therefore om|w == 0)
172     C | "WB": Western boundary
173     C |"PWX": Periodic wrap around in X.
174     C |----------------------------------------------------------
175     C | (3) Views showing nomenclature and indexing
176     C | for grid descriptor variables.
177     C |
178     C | Fig 3a. shows the orientation, indexing and
179     C | notation for the grid spacing terms used internally
180     C | for the evaluation of gradient and averaging terms.
181     C | These varaibles are set based on the model input
182     C | parameters which define the model grid in terms of
183     C | spacing in X, Y and Z.
184     C |
185     C | Fig 3b. shows the orientation, indexing and
186     C | notation for the variables that are used to define
187     C | the model grid. These varaibles are set directly
188     C | from the model input.
189     C |
190     C | Figure 3a
191     C | =========
192     C | |------------------------------------
193     C | | |
194     C |"PWY"********************************* etc...
195     C | | |
196     C | | |
197     C | | |
198     C | | |
199     C | | |
200     C | | |
201     C | | |
202     C |
203     C | . .
204     C | . .
205     C | . .
206     C | e e
207     C | t t
208     C | c c
209     C | |-----------v-----------|-----------v----------|-
210     C | | | |
211     C | | | |
212     C | | | |
213     C | | | |
214     C | | | |
215     C | u<--dxF(i=1,j=2,k=1)--->u t |
216     C | |/|\ /|\ | |
217     C | | | | | |
218     C | | | | | |
219     C | | | | | |
220     C | |dyU(i=1, dyC(i=1, | |
221     C | --- ---|--j=2,---|--j=2,-----------------v----------|-
222     C | /|\ | | k=1) | k=1) | /|\ |
223     C | | | | | | dyF(i=2, |
224     C | | | | | | | j=1, |
225     C |dyG( |\|/ \|/ | | k=1) |
226     C | i=1,u--- t<---dxC(i=2,j=1,k=1)-->t |
227     C | j=1,| | | |
228     C | k=1)| | | |
229     C | | | | | |
230     C | | | | | |
231     C | \|/ | |<---dxV(i=2,j=1,k=1)--\|/ |
232     C |"SB"++>|___________v___________|___________v__________|_
233     C | <--dxG(i=1,j=1,k=1)----->
234 adcroft 1.17 C | /+\ .
235 jmc 1.35 C | +
236     C | +
237     C | "WB"
238     C |
239     C | N, y increasing northwards
240     C | /|\ j increasing northwards
241     C | |
242     C | |
243     C | ======>E, x increasing eastwards
244     C | i increasing eastwards
245     C |
246     C | i: East-west index
247     C | j: North-south index
248     C | k: up-down index
249     C | u: x-velocity point
250     C | V: y-velocity point
251     C | t: tracer point
252     C | "SB": Southern boundary
253     C | "WB": Western boundary
254     C |"PWX": Periodic wrap around in X.
255     C |"PWY": Periodic wrap around in Y.
256     C |
257     C | Figure 3b
258     C | =========
259     C |
260     C | . .
261     C | . .
262     C | . .
263     C | e e
264     C | t t
265     C | c c
266     C | |-----------v-----------|-----------v--etc...
267     C | | |
268     C | | |
269     C | | |
270     C | | |
271     C | | |
272     C | u<--delX(i=1)---------->u t
273     C | | |
274     C | | |
275     C | | |
276     C | | |
277     C | | |
278     C | |-----------v-----------------------v--etc...
279     C | | /|\ |
280     C | | | |
281     C | | | |
282     C | | | |
283     C | u delY(j=1) | t
284     C | | | |
285     C | | | |
286     C | | | |
287     C | | | |
288     C | | \|/ |
289     C |"SB"++>|___________v___________|___________v__etc...
290 adcroft 1.17 C | /+\ .
291 jmc 1.35 C | +
292     C | +
293     C | "WB"
294     C |
295 cnh 1.16 C *==========================================================*
296     C \ev
297     CEOP
298 cnh 1.3
299     C Macros that override/modify standard definitions
300     #include "GRID_MACROS.h"
301    
302 jmc 1.35 C-- COMMON /GRID_RL/ RL valued grid defining variables.
303     C deepFacC :: deep-model grid factor (fct of vertical only) for dx,dy
304     C deepFacF at level-center (deepFacC) and level interface (deepFacF)
305     C deepFac2C :: deep-model grid factor (fct of vertical only) for area dx*dy
306     C deepFac2F at level-center (deepFac2C) and level interface (deepFac2F)
307     C gravitySign :: indicates the direction of gravity relative to R direction
308     C (= -1 for R=Z (Z increases upward, -gravity direction )
309     C (= +1 for R=P (P increases downward, +gravity direction)
310     C rkSign :: Vertical coordinate to vertical index orientation.
311     C ( +1 same orientation, -1 opposite orientation )
312     C globalArea :: Domain Integrated horizontal Area [m2]
313     COMMON /GRID_RL/
314     & cosFacU, cosFacV, sqCosFacU, sqCosFacV,
315     & deepFacC, deepFac2C, recip_deepFacC, recip_deepFac2C,
316     & deepFacF, deepFac2F, recip_deepFacF, recip_deepFac2F,
317     & gravitySign, rkSign, globalArea
318     _RL cosFacU (1-Oly:sNy+Oly,nSx,nSy)
319     _RL cosFacV (1-Oly:sNy+Oly,nSx,nSy)
320     _RL sqCosFacU (1-Oly:sNy+Oly,nSx,nSy)
321     _RL sqCosFacV (1-Oly:sNy+Oly,nSx,nSy)
322     _RL deepFacC (Nr)
323     _RL deepFac2C (Nr)
324     _RL deepFacF (Nr+1)
325     _RL deepFac2F (Nr+1)
326     _RL recip_deepFacC (Nr)
327     _RL recip_deepFac2C(Nr)
328     _RL recip_deepFacF (Nr+1)
329     _RL recip_deepFac2F(Nr+1)
330     _RL gravitySign
331     _RL rkSign
332     _RL globalArea
333    
334     C-- COMMON /GRID_RS/ RS valued grid defining variables.
335     C dxC :: Cell center separation in X across western cell wall (m)
336     C dxG :: Cell face separation in X along southern cell wall (m)
337     C dxF :: Cell face separation in X thru cell center (m)
338     C dxV :: V-point separation in X across south-west corner of cell (m)
339     C dyC :: Cell center separation in Y across southern cell wall (m)
340     C dyG :: Cell face separation in Y along western cell wall (m)
341     C dyF :: Cell face separation in Y thru cell center (m)
342     C dyU :: U-point separation in Y across south-west corner of cell (m)
343     C drC :: Cell center separation along Z axis ( units of r ).
344     C drF :: Cell face separation along Z axis ( units of r ).
345     C R_low :: base of fluid in r_unit (Depth(m) / Pressure(Pa) at top Atmos.)
346 jmc 1.39 C rLowW :: base of fluid column in r_unit at Western edge location.
347     C rLowS :: base of fluid column in r_unit at Southern edge location.
348 jmc 1.35 C Ro_surf :: surface reference (at rest) position, r_unit.
349 jmc 1.39 C rSurfW :: surface reference position at Western edge location [r_unit].
350     C rSurfS :: surface reference position at Southern edge location [r_unit].
351 jmc 1.35 C hFac :: Fraction of cell in vertical which is open i.e how
352 cnh 1.1 C "lopped" a cell is (dimensionless scale factor).
353     C Note: The code needs terms like MIN(hFac,hFac(I+1))
354     C On some platforms it may be better to precompute
355     C hFacW, hFacE, ... here than do MIN on the fly.
356 jmc 1.38 cC maskH :: cell Center full-column mask (= 2D mask)
357 jmc 1.37 C maskInC :: Cell Center 2-D Interior mask (i.e., zero beyond OB)
358     C maskInW :: West face 2-D Interior mask (i.e., zero on and beyond OB)
359     C maskInS :: South face 2-D Interior mask (i.e., zero on and beyond OB)
360 jmc 1.35 C maskC :: cell Center land mask
361     C maskW :: West face land mask
362     C maskS :: South face land mask
363 jmc 1.40 C recip_dxC :: Reciprocal of dxC
364     C recip_dxG :: Reciprocal of dxG
365     C recip_dxF :: Reciprocal of dxF
366     C recip_dxV :: Reciprocal of dxV
367     C recip_dyC :: Reciprocal of dxC
368     C recip_dyG :: Reciprocal of dyG
369     C recip_dyF :: Reciprocal of dyF
370     C recip_dyU :: Reciprocal of dyU
371     C recip_drC :: Reciprocal of drC
372     C recip_drF :: Reciprocal of drF
373 jmc 1.35 C recip_Rcol :: Inverse of cell center column thickness (1/r_unit)
374     C recip_hFacC :: Inverse of cell open-depth f[X,Y,Z] ( dimensionless ).
375     C recip_hFacW rhFacC center, rhFacW west, rhFacS south.
376     C recip_hFacS Note: This is precomputed here because it involves division.
377     C xC :: X-coordinate of cell center f[X,Y]. The units of xc, yc
378     C depend on the grid. They are not used in differencing or
379     C averaging but are just a convient quantity for I/O,
380     C diagnostics etc.. As such xc is in m for cartesian
381     C coordinates but degrees for spherical polar.
382     C yC :: Y-coordinate of center of cell f[X,Y].
383     C yG :: Y-coordinate of corner of cell ( c-grid vorticity point) f[X,Y].
384     C rA :: R-face are f[X,Y] ( m^2 ).
385     C Note: In a cartesian framework zA is simply dx*dy,
386     C however we use zA to allow for non-globally
387     C orthogonal coordinate frames (with appropriate
388     C metric terms).
389     C rC :: R-coordinate of center of cell f[Z] (units of r).
390     C rF :: R-coordinate of face of cell f[Z] (units of r).
391     C tanPhiAtU :: tan of the latitude at U point. Used for spherical polar
392     C metric term in U equation.
393     C tanPhiAtV :: tan of the latitude at V point. Used for spherical polar
394     C metric term in V equation.
395 jmc 1.29 C angleCosC :: cosine of grid orientation angle relative to Geographic direction
396 jmc 1.35 C at cell center: alpha=(Eastward_dir,grid_uVel_dir)=(North_d,vVel_d)
397 jmc 1.29 C angleSinC :: sinus of grid orientation angle relative to Geographic direction
398 jmc 1.35 C at cell center: alpha=(Eastward_dir,grid_uVel_dir)=(North_d,vVel_d)
399 jmc 1.27 C fCori :: Coriolis parameter at grid Center point
400     C fCoriG :: Coriolis parameter at grid Corner point
401     C fCoriCos :: Coriolis Cos(phi) parameter at grid Center point (for NH)
402 mlosch 1.20
403 jmc 1.35 COMMON /GRID_RS/
404 adcroft 1.15 & dxC,dxF,dxG,dxV,dyC,dyF,dyG,dyU,
405 jmc 1.39 & R_low, rLowW, rLowS,
406     & Ro_surf, rSurfW, rSurfS,
407 jmc 1.35 & hFacC, hFacW, hFacS,
408 cnh 1.5 & recip_dxC,recip_dxF,recip_dxG,recip_dxV,
409     & recip_dyC,recip_dyF,recip_dyG,recip_dyU,
410 jmc 1.32 & recip_Rcol,
411     & recip_hFacC,recip_hFacW,recip_hFacS,
412 adcroft 1.15 & xC,yC,rA,rAw,rAs,rAz,xG,yG,
413 jmc 1.37 & maskInC, maskInW, maskInS,
414     & maskC, maskW, maskS,
415 jmc 1.18 & recip_rA,recip_rAw,recip_rAs,recip_rAz,
416 jmc 1.39 & drC, drF, recip_drC, recip_drF, rC, rF,
417 jmc 1.29 & tanPhiAtU, tanPhiAtV, angleCosC, angleSinC,
418 jmc 1.27 & fCori, fCoriG, fCoriCos
419 jmc 1.38 c & , maskH
420 cnh 1.5 _RS dxC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
421     _RS dxF (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
422     _RS dxG (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
423     _RS dxV (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
424     _RS dyC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
425     _RS dyF (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
426     _RS dyG (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
427     _RS dyU (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
428 adcroft 1.15 _RS R_low (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
429 jmc 1.39 _RS rLowW (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
430     _RS rLowS (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
431 adcroft 1.15 _RS Ro_surf (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
432 jmc 1.39 _RS rSurfW (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
433     _RS rSurfS (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
434 jmc 1.35 _RS hFacC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
435     _RS hFacW (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
436     _RS hFacS (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
437 cnh 1.5 _RS recip_dxC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
438     _RS recip_dxF (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
439     _RS recip_dxG (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
440     _RS recip_dxV (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
441     _RS recip_dyC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
442     _RS recip_dyF (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
443     _RS recip_dyG (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
444     _RS recip_dyU (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
445 adcroft 1.15 _RS recip_Rcol (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
446 jmc 1.35 _RS recip_hFacC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
447     _RS recip_hFacW (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
448     _RS recip_hFacS (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
449 cnh 1.5 _RS xC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
450 adcroft 1.13 _RS xG (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
451 cnh 1.5 _RS yC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
452 adcroft 1.13 _RS yG (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
453 cnh 1.5 _RS rA (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
454 adcroft 1.11 _RS rAw (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
455     _RS rAs (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
456 adcroft 1.13 _RS rAz (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
457     _RS recip_rA (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
458     _RS recip_rAw (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
459     _RS recip_rAs (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
460     _RS recip_rAz (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
461 jmc 1.38 c _RS maskH (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
462 jmc 1.37 _RS maskInC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
463     _RS maskInW (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
464     _RS maskInS (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
465 jmc 1.35 _RS maskC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
466     _RS maskW (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
467     _RS maskS (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
468     _RS drC (Nr)
469     _RS drF (Nr)
470     _RS recip_drC (Nr)
471     _RS recip_drF (Nr)
472     _RS rC (Nr)
473     _RS rF (Nr+1)
474 jmc 1.39 _RS tanPhiAtU (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
475     _RS tanPhiAtV (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
476     _RS angleCosC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
477     _RS angleSinC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
478 jmc 1.35 _RS fCori (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
479     _RS fCoriG (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
480     _RS fCoriCos (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
481    
482     #ifdef ALLOW_DEPTH_CONTROL
483     C-- COMMON /GRID_DEPTH_CTRL/ grid defining variables for Depth Control code.
484     C xx_r_low :: in TAF-sense active replacement of R_low
485     COMMON /GRID_DEPTH_CTRL/
486     & xx_r_low
487     _RL xx_r_low (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
488     #endif /* ALLOW_DEPTH_CONTROL */
489 jmc 1.27
490 jmc 1.34 C-- COMMON /GRID_I/ INTEGER valued grid defining variables.
491     C kSurfC :: vertical index of the surface tracer cell
492     C kSurfW :: vertical index of the surface U point
493     C kSurfS :: vertical index of the surface V point
494     C kLowC :: index of the r-lowest "wet cell" (2D)
495     C IMPORTANT: ksurfC,W,S = Nr+1 and kLowC = 0 where the fluid column
496     C is empty (continent)
497     COMMON /GRID_I/
498     & kSurfC, kSurfW, kSurfS,
499     & kLowC
500     INTEGER kSurfC(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
501     INTEGER kSurfW(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
502     INTEGER kSurfS(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
503     INTEGER kLowC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
504    
505 jmc 1.35 C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|

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