1 | !!---------------------------------------------------------------------- |
---|
2 | !! *** ldfdyn_c2d.h90 *** |
---|
3 | !!---------------------------------------------------------------------- |
---|
4 | !! ldf_dyn_c2d : set the lateral viscosity coefficients |
---|
5 | !! ldf_dyn_c2d_orca : specific case for orca r2 and r4 |
---|
6 | !!---------------------------------------------------------------------- |
---|
7 | |
---|
8 | !!---------------------------------------------------------------------- |
---|
9 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
---|
10 | !! $Id$ |
---|
11 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
---|
12 | !!---------------------------------------------------------------------- |
---|
13 | |
---|
14 | SUBROUTINE ldf_dyn_c2d( ld_print ) |
---|
15 | !!---------------------------------------------------------------------- |
---|
16 | !! *** ROUTINE ldf_dyn_c2d *** |
---|
17 | !! |
---|
18 | !! ** Purpose : initializations of the horizontal ocean physics |
---|
19 | !! |
---|
20 | !! ** Method : |
---|
21 | !! 2D eddy viscosity coefficients ( longitude, latitude ) |
---|
22 | !! |
---|
23 | !! harmonic operator : ahm1 is defined at t-point |
---|
24 | !! ahm2 is defined at f-point |
---|
25 | !! + isopycnal : ahm3 is defined at u-point |
---|
26 | !! or geopotential ahm4 is defined at v-point |
---|
27 | !! iso-model level : ahm3, ahm4 not used |
---|
28 | !! |
---|
29 | !! biharmonic operator : ahm3 is defined at u-point |
---|
30 | !! ahm4 is defined at v-point |
---|
31 | !! : ahm1, ahm2 not used |
---|
32 | !! |
---|
33 | !!---------------------------------------------------------------------- |
---|
34 | !! * Arguments |
---|
35 | LOGICAL, INTENT (in) :: ld_print ! If true, output arrays on numout |
---|
36 | |
---|
37 | !! * Local variables |
---|
38 | INTEGER :: ji, jj |
---|
39 | REAL(wp) :: za00, zd_max, zetmax, zeumax, zefmax, zevmax |
---|
40 | !!---------------------------------------------------------------------- |
---|
41 | |
---|
42 | IF(lwp) WRITE(numout,*) |
---|
43 | IF(lwp) WRITE(numout,*) 'ldf_dyn_c2d : 2d lateral eddy viscosity coefficient' |
---|
44 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
---|
45 | IF(lwp) WRITE(numout,*) |
---|
46 | |
---|
47 | ! harmonic operator (ahm1, ahm2) : ( T- and F- points) (used for laplacian operators |
---|
48 | ! =============================== whatever its orientation is) |
---|
49 | IF( ln_dynldf_lap ) THEN |
---|
50 | ! define ahm1 and ahm2 at the right grid point position |
---|
51 | ! (USER: modify ahm1 and ahm2 following your desiderata) |
---|
52 | |
---|
53 | zd_max = MAX( MAXVAL( e1t(:,:) ), MAXVAL( e2t(:,:) ) ) |
---|
54 | IF( lk_mpp ) CALL mpp_max( zd_max ) ! max over the global domain |
---|
55 | |
---|
56 | IF(lwp) WRITE(numout,*) ' laplacian operator: ahm proportional to e1' |
---|
57 | IF(lwp) WRITE(numout,*) ' maximum grid-spacing = ', zd_max, ' maximum value for ahm = ', ahm0 |
---|
58 | |
---|
59 | za00 = ahm0 / zd_max |
---|
60 | DO jj = 1, jpj |
---|
61 | DO ji = 1, jpi |
---|
62 | zetmax = MAX( e1t(ji,jj), e2t(ji,jj) ) |
---|
63 | zefmax = MAX( e1f(ji,jj), e2f(ji,jj) ) |
---|
64 | ahm1(ji,jj) = za00 * zetmax |
---|
65 | ahm2(ji,jj) = za00 * zefmax |
---|
66 | END DO |
---|
67 | END DO |
---|
68 | |
---|
69 | IF( ln_dynldf_iso ) THEN |
---|
70 | IF(lwp) WRITE(numout,*) ' Caution, as implemented now, the isopycnal part of momentum' |
---|
71 | IF(lwp) WRITE(numout,*) ' mixing use aht0 as eddy viscosity coefficient. Thus, it is' |
---|
72 | IF(lwp) WRITE(numout,*) ' uniform and you must be sure that your ahm is greater than' |
---|
73 | IF(lwp) WRITE(numout,*) ' aht0 everywhere in the model domain.' |
---|
74 | ENDIF |
---|
75 | |
---|
76 | ! Special case for ORCA R2 and R4 configurations (overwrite the value of ahm1 ahm2) |
---|
77 | ! ============================================== |
---|
78 | IF( cp_cfg == "orca" .AND. ( jp_cfg == 2 .OR. jp_cfg == 4 ) ) CALL ldf_dyn_c2d_orca( ld_print ) |
---|
79 | |
---|
80 | ! Control print |
---|
81 | IF( lwp .AND. ld_print ) THEN |
---|
82 | WRITE(numout,*) |
---|
83 | WRITE(numout,*) 'inildf: 2D ahm1 array' |
---|
84 | CALL prihre(ahm1,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
---|
85 | WRITE(numout,*) |
---|
86 | WRITE(numout,*) 'inildf: 2D ahm2 array' |
---|
87 | CALL prihre(ahm2,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
---|
88 | ENDIF |
---|
89 | ENDIF |
---|
90 | |
---|
91 | ! biharmonic operator (ahm3, ahm4) : at U- and V-points (used for bilaplacian operator |
---|
92 | ! ================================= whatever its orientation is) |
---|
93 | IF( ln_dynldf_bilap ) THEN |
---|
94 | ! (USER: modify ahm3 and ahm4 following your desiderata) |
---|
95 | ! Here: ahm is proportional to the cube of the maximum of the gridspacing |
---|
96 | ! in the to horizontal direction |
---|
97 | |
---|
98 | zd_max = MAX( MAXVAL( e1u(:,:) ), MAXVAL( e2u(:,:) ) ) |
---|
99 | IF( lk_mpp ) CALL mpp_max( zd_max ) ! max over the global domain |
---|
100 | |
---|
101 | IF(lwp) WRITE(numout,*) ' bi-laplacian operator: ahm proportional to e1**3 ' |
---|
102 | IF(lwp) WRITE(numout,*) ' maximum grid-spacing = ', zd_max, ' maximum value for ahm = ', ahm0 |
---|
103 | |
---|
104 | za00 = ahm0_blp / ( zd_max * zd_max * zd_max ) |
---|
105 | DO jj = 1, jpj |
---|
106 | DO ji = 1, jpi |
---|
107 | zeumax = MAX( e1u(ji,jj), e2u(ji,jj) ) |
---|
108 | zevmax = MAX( e1v(ji,jj), e2v(ji,jj) ) |
---|
109 | ahm3(ji,jj) = za00 * zeumax * zeumax * zeumax |
---|
110 | ahm4(ji,jj) = za00 * zevmax * zevmax * zevmax |
---|
111 | END DO |
---|
112 | END DO |
---|
113 | |
---|
114 | ! Control print |
---|
115 | IF( lwp .AND. ld_print ) THEN |
---|
116 | WRITE(numout,*) |
---|
117 | WRITE(numout,*) 'inildf: ahm3 array' |
---|
118 | CALL prihre(ahm3,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
---|
119 | WRITE(numout,*) |
---|
120 | WRITE(numout,*) 'inildf: ahm4 array' |
---|
121 | CALL prihre(ahm4,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
---|
122 | ENDIF |
---|
123 | ENDIF |
---|
124 | |
---|
125 | |
---|
126 | END SUBROUTINE ldf_dyn_c2d |
---|
127 | |
---|
128 | |
---|
129 | SUBROUTINE ldf_dyn_c2d_orca( ld_print ) |
---|
130 | !!---------------------------------------------------------------------- |
---|
131 | !! *** ROUTINE ldf_dyn_c2d *** |
---|
132 | !! |
---|
133 | !! **** W A R N I N G **** |
---|
134 | !! |
---|
135 | !! ORCA R2 and R4 configurations |
---|
136 | !! |
---|
137 | !! **** W A R N I N G **** |
---|
138 | !! |
---|
139 | !! ** Purpose : initializations of the lateral viscosity for orca R2 |
---|
140 | !! |
---|
141 | !! ** Method : blah blah blah... |
---|
142 | !! |
---|
143 | !!---------------------------------------------------------------------- |
---|
144 | !! * Modules used |
---|
145 | USE ldftra_oce, ONLY : aht0 |
---|
146 | |
---|
147 | !! * Arguments |
---|
148 | LOGICAL, INTENT (in) :: ld_print ! If true, output arrays on numout |
---|
149 | |
---|
150 | !! * Local variables |
---|
151 | INTEGER :: ji, jj, jn ! dummy loop indices |
---|
152 | INTEGER :: inum ! temporary logical unit |
---|
153 | INTEGER :: iim, ijm |
---|
154 | INTEGER :: ifreq, il1, il2, ij, ii |
---|
155 | INTEGER, DIMENSION(jpidta,jpidta) :: idata |
---|
156 | INTEGER, DIMENSION(jpi ,jpj ) :: icof |
---|
157 | |
---|
158 | REAL(wp) :: zahmeq, zcoft, zcoff, zmsk |
---|
159 | |
---|
160 | CHARACTER (len=15) :: clexp |
---|
161 | !!---------------------------------------------------------------------- |
---|
162 | |
---|
163 | IF(lwp) WRITE(numout,*) |
---|
164 | IF(lwp) WRITE(numout,*) 'inildf: 2d eddy viscosity coefficient' |
---|
165 | IF(lwp) WRITE(numout,*) '~~~~~~ --' |
---|
166 | IF(lwp) WRITE(numout,*) |
---|
167 | IF(lwp) WRITE(numout,*) ' orca ocean model' |
---|
168 | IF(lwp) WRITE(numout,*) |
---|
169 | |
---|
170 | #if defined key_antarctic |
---|
171 | # include "ldfdyn_antarctic.h90" |
---|
172 | #elif defined key_arctic |
---|
173 | # include "ldfdyn_arctic.h90" |
---|
174 | #else |
---|
175 | ! Read 2d integer array to specify western boundary increase in the |
---|
176 | ! ===================== equatorial strip (20N-20S) defined at t-points |
---|
177 | |
---|
178 | CALL ctl_opn( inum, 'ahmcoef', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, numout, lwp ) |
---|
179 | READ(inum,9101) clexp, iim, ijm |
---|
180 | READ(inum,'(/)') |
---|
181 | ifreq = 40 |
---|
182 | il1 = 1 |
---|
183 | DO jn = 1, jpidta/ifreq+1 |
---|
184 | READ(inum,'(/)') |
---|
185 | il2 = MIN( jpidta, il1+ifreq-1 ) |
---|
186 | READ(inum,9201) ( ii, ji = il1, il2, 5 ) |
---|
187 | READ(inum,'(/)') |
---|
188 | DO jj = jpjdta, 1, -1 |
---|
189 | READ(inum,9202) ij, ( idata(ji,jj), ji = il1, il2 ) |
---|
190 | END DO |
---|
191 | il1 = il1 + ifreq |
---|
192 | END DO |
---|
193 | |
---|
194 | DO jj = 1, nlcj |
---|
195 | DO ji = 1, nlci |
---|
196 | icof(ji,jj) = idata( mig(ji), mjg(jj) ) |
---|
197 | END DO |
---|
198 | END DO |
---|
199 | DO jj = nlcj+1, jpj |
---|
200 | DO ji = 1, nlci |
---|
201 | icof(ji,jj) = icof(ji,nlcj) |
---|
202 | END DO |
---|
203 | END DO |
---|
204 | DO jj = 1, jpj |
---|
205 | DO ji = nlci+1, jpi |
---|
206 | icof(ji,jj) = icof(nlci,jj) |
---|
207 | END DO |
---|
208 | END DO |
---|
209 | |
---|
210 | 9101 FORMAT(1x,a15,2i8) |
---|
211 | 9201 FORMAT(3x,13(i3,12x)) |
---|
212 | 9202 FORMAT(i3,41i3) |
---|
213 | |
---|
214 | |
---|
215 | ! Set ahm1 and ahm2 ( T- and F- points) (used for laplacian operator) |
---|
216 | ! ================= |
---|
217 | ! define ahm1 and ahm2 at the right grid point position |
---|
218 | ! (USER: modify ahm1 and ahm2 following your desiderata) |
---|
219 | |
---|
220 | |
---|
221 | ! Decrease ahm to zahmeq m2/s in the tropics |
---|
222 | ! (from 90 to 20 degre: ahm = constant |
---|
223 | ! from 20 to 2.5 degre: ahm = decrease in (1-cos)/2 |
---|
224 | ! from 2.5 to 0 degre: ahm = constant |
---|
225 | ! symmetric in the south hemisphere) |
---|
226 | |
---|
227 | zahmeq = aht0 |
---|
228 | |
---|
229 | DO jj = 1, jpj |
---|
230 | DO ji = 1, jpi |
---|
231 | IF( ABS( gphif(ji,jj) ) >= 20. ) THEN |
---|
232 | ahm2(ji,jj) = ahm0 |
---|
233 | ELSEIF( ABS( gphif(ji,jj) ) <= 2.5 ) THEN |
---|
234 | ahm2(ji,jj) = zahmeq |
---|
235 | ELSE |
---|
236 | ahm2(ji,jj) = zahmeq + (ahm0-zahmeq)/2. & |
---|
237 | * ( 1. - COS( rad * ( ABS(gphif(ji,jj))-2.5 ) * 180. / 17.5 ) ) |
---|
238 | ENDIF |
---|
239 | IF( ABS( gphit(ji,jj) ) >= 20. ) THEN |
---|
240 | ahm1(ji,jj) = ahm0 |
---|
241 | ELSEIF( ABS( gphit(ji,jj) ) <= 2.5 ) THEN |
---|
242 | ahm1(ji,jj) = zahmeq |
---|
243 | ELSE |
---|
244 | ahm1(ji,jj) = zahmeq + (ahm0-zahmeq)/2. & |
---|
245 | * ( 1. - COS( rad * ( ABS(gphit(ji,jj))-2.5 ) * 180. / 17.5 ) ) |
---|
246 | ENDIF |
---|
247 | END DO |
---|
248 | END DO |
---|
249 | |
---|
250 | ! increase along western boundaries of equatorial strip |
---|
251 | ! t-point |
---|
252 | DO jj = 1, jpjm1 |
---|
253 | DO ji = 1, jpim1 |
---|
254 | zcoft = FLOAT( icof(ji,jj) ) / 100. |
---|
255 | ahm1(ji,jj) = zcoft * ahm0 + (1.-zcoft) * ahm1(ji,jj) |
---|
256 | END DO |
---|
257 | END DO |
---|
258 | ! f-point |
---|
259 | icof(:,:) = icof(:,:) * tmask(:,:,1) |
---|
260 | DO jj = 1, jpjm1 |
---|
261 | DO ji = 1, jpim1 ! NO vector opt. |
---|
262 | zmsk = tmask(ji,jj+1,1) + tmask(ji+1,jj+1,1) + tmask(ji,jj,1) + tmask(ji,jj+1,1) |
---|
263 | IF( zmsk == 0. ) THEN |
---|
264 | zcoff = 1. |
---|
265 | ELSE |
---|
266 | zcoff = FLOAT( icof(ji,jj+1) + icof(ji+1,jj+1) + icof(ji,jj) + icof(ji,jj+1) ) & |
---|
267 | / (zmsk * 100.) |
---|
268 | ENDIF |
---|
269 | ahm2(ji,jj) = zcoff * ahm0 + (1.-zcoff) * ahm2(ji,jj) |
---|
270 | END DO |
---|
271 | END DO |
---|
272 | #endif |
---|
273 | |
---|
274 | ! Lateral boundary conditions on ( ahm1, ahm2 ) |
---|
275 | ! ============== |
---|
276 | CALL lbc_lnk( ahm1, 'T', 1. ) ! T-point, unchanged sign |
---|
277 | CALL lbc_lnk( ahm2, 'F', 1. ) ! F-point, unchanged sign |
---|
278 | |
---|
279 | ! Control print |
---|
280 | IF( lwp .AND. ld_print ) THEN |
---|
281 | WRITE(numout,*) |
---|
282 | WRITE(numout,*) 'inildf: 2D ahm1 array' |
---|
283 | CALL prihre(ahm1,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
---|
284 | WRITE(numout,*) |
---|
285 | WRITE(numout,*) 'inildf: 2D ahm2 array' |
---|
286 | CALL prihre(ahm2,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout) |
---|
287 | ENDIF |
---|
288 | |
---|
289 | END SUBROUTINE ldf_dyn_c2d_orca |
---|