1 | MODULE dynhpg |
---|
2 | !!====================================================================== |
---|
3 | !! *** MODULE dynhpg *** |
---|
4 | !! Ocean dynamics: hydrostatic pressure gradient trend |
---|
5 | !!====================================================================== |
---|
6 | !! History : OPA ! 1987-09 (P. Andrich, M.-A. Foujols) hpg_zco: Original code |
---|
7 | !! 5.0 ! 1991-11 (G. Madec) |
---|
8 | !! 7.0 ! 1996-01 (G. Madec) hpg_sco: Original code for s-coordinates |
---|
9 | !! 8.0 ! 1997-05 (G. Madec) split dynber into dynkeg and dynhpg |
---|
10 | !! 8.5 ! 2002-07 (G. Madec) F90: Free form and module |
---|
11 | !! 8.5 ! 2002-08 (A. Bozec) hpg_zps: Original code |
---|
12 | !! NEMO 1.0 ! 2005-10 (A. Beckmann, B.W. An) various s-coordinate options |
---|
13 | !! ! Original code for hpg_ctl, hpg_hel hpg_wdj, hpg_djc, hpg_rot |
---|
14 | !! - ! 2005-11 (G. Madec) style & small optimisation |
---|
15 | !! 3.3 ! 2010-10 (C. Ethe, G. Madec) reorganisation of initialisation phase |
---|
16 | !! 3.4 ! 2011-11 (A. Coward, H. Liu) introduction of prj scheme; |
---|
17 | !! ! suppression of hel, wdj and rot options |
---|
18 | !!---------------------------------------------------------------------- |
---|
19 | |
---|
20 | !!---------------------------------------------------------------------- |
---|
21 | !! dyn_hpg : update the momentum trend with the now horizontal |
---|
22 | !! gradient of the hydrostatic pressure |
---|
23 | !! dyn_hpg_init : initialisation and control of options |
---|
24 | !! hpg_zco : z-coordinate scheme |
---|
25 | !! hpg_zps : z-coordinate plus partial steps (interpolation) |
---|
26 | !! hpg_sco : s-coordinate (standard jacobian formulation) |
---|
27 | !! hpg_djc : s-coordinate (Density Jacobian with Cubic polynomial) |
---|
28 | !! hpg_prj : s-coordinate (Pressure Jacobian with Cubic polynomial) |
---|
29 | !!---------------------------------------------------------------------- |
---|
30 | USE oce ! ocean dynamics and tracers |
---|
31 | USE dom_oce ! ocean space and time domain |
---|
32 | USE phycst ! physical constants |
---|
33 | USE trdmod ! ocean dynamics trends |
---|
34 | USE trdmod_oce ! ocean variables trends |
---|
35 | USE in_out_manager ! I/O manager |
---|
36 | USE prtctl ! Print control |
---|
37 | USE lbclnk ! lateral boundary condition |
---|
38 | USE lib_mpp ! MPP library |
---|
39 | USE wrk_nemo ! Memory Allocation |
---|
40 | USE timing ! Timing |
---|
41 | |
---|
42 | IMPLICIT NONE |
---|
43 | PRIVATE |
---|
44 | |
---|
45 | PUBLIC dyn_hpg ! routine called by step module |
---|
46 | PUBLIC dyn_hpg_init ! routine called by opa module |
---|
47 | |
---|
48 | ! !!* Namelist namdyn_hpg : hydrostatic pressure gradient |
---|
49 | LOGICAL , PUBLIC :: ln_hpg_zco = .TRUE. !: z-coordinate - full steps |
---|
50 | LOGICAL , PUBLIC :: ln_hpg_zps = .FALSE. !: z-coordinate - partial steps (interpolation) |
---|
51 | LOGICAL , PUBLIC :: ln_hpg_sco = .FALSE. !: s-coordinate (standard jacobian formulation) |
---|
52 | LOGICAL , PUBLIC :: ln_hpg_djc = .FALSE. !: s-coordinate (Density Jacobian with Cubic polynomial) |
---|
53 | LOGICAL , PUBLIC :: ln_hpg_prj = .FALSE. !: s-coordinate (Pressure Jacobian scheme) |
---|
54 | LOGICAL , PUBLIC :: ln_dynhpg_imp = .FALSE. !: semi-implicite hpg flag |
---|
55 | |
---|
56 | INTEGER :: nhpg = 0 ! = 0 to 7, type of pressure gradient scheme used ! (deduced from ln_hpg_... flags) |
---|
57 | |
---|
58 | !! * Substitutions |
---|
59 | # include "domzgr_substitute.h90" |
---|
60 | # include "vectopt_loop_substitute.h90" |
---|
61 | !!---------------------------------------------------------------------- |
---|
62 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
---|
63 | !! $Id$ |
---|
64 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
---|
65 | !!---------------------------------------------------------------------- |
---|
66 | CONTAINS |
---|
67 | |
---|
68 | SUBROUTINE dyn_hpg( kt ) |
---|
69 | !!--------------------------------------------------------------------- |
---|
70 | !! *** ROUTINE dyn_hpg *** |
---|
71 | !! |
---|
72 | !! ** Method : Call the hydrostatic pressure gradient routine |
---|
73 | !! using the scheme defined in the namelist |
---|
74 | !! |
---|
75 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
---|
76 | !! - Save the trend (l_trddyn=T) |
---|
77 | !!---------------------------------------------------------------------- |
---|
78 | USE oce, ONLY: tsa ! (tsa) used as 2 3D workspace |
---|
79 | !! |
---|
80 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
---|
81 | REAL(wp), POINTER, DIMENSION(:,:,:) :: ztrdu, ztrdv |
---|
82 | !!---------------------------------------------------------------------- |
---|
83 | ! |
---|
84 | IF( nn_timing == 1 ) CALL timing_start('dyn_hpg') |
---|
85 | ! |
---|
86 | IF( l_trddyn ) THEN ! Temporary saving of ua and va trends (l_trddyn) |
---|
87 | ztrdu => tsa(:,:,:,1) |
---|
88 | ztrdv => tsa(:,:,:,2) |
---|
89 | ! |
---|
90 | ztrdu(:,:,:) = ua(:,:,:) |
---|
91 | ztrdv(:,:,:) = va(:,:,:) |
---|
92 | ENDIF |
---|
93 | ! |
---|
94 | SELECT CASE ( nhpg ) ! Hydrostatic pressure gradient computation |
---|
95 | CASE ( 0 ) ; CALL hpg_zco ( kt ) ! z-coordinate |
---|
96 | CASE ( 1 ) ; CALL hpg_zps ( kt ) ! z-coordinate plus partial steps (interpolation) |
---|
97 | CASE ( 2 ) ; CALL hpg_sco ( kt ) ! s-coordinate (standard jacobian formulation) |
---|
98 | CASE ( 3 ) ; CALL hpg_djc ( kt ) ! s-coordinate (Density Jacobian with Cubic polynomial) |
---|
99 | CASE ( 4 ) ; CALL hpg_prj ( kt ) ! s-coordinate (Pressure Jacobian scheme) |
---|
100 | END SELECT |
---|
101 | ! |
---|
102 | IF( l_trddyn ) THEN ! save the hydrostatic pressure gradient trends for momentum trend diagnostics |
---|
103 | ztrdu(:,:,:) = ua(:,:,:) - ztrdu(:,:,:) |
---|
104 | ztrdv(:,:,:) = va(:,:,:) - ztrdv(:,:,:) |
---|
105 | CALL trd_mod( ztrdu, ztrdv, jpdyn_trd_hpg, 'DYN', kt ) |
---|
106 | ENDIF |
---|
107 | ! |
---|
108 | IF(ln_ctl) CALL prt_ctl( tab3d_1=ua, clinfo1=' hpg - Ua: ', mask1=umask, & |
---|
109 | & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) |
---|
110 | ! |
---|
111 | IF( nn_timing == 1 ) CALL timing_stop('dyn_hpg') |
---|
112 | ! |
---|
113 | END SUBROUTINE dyn_hpg |
---|
114 | |
---|
115 | |
---|
116 | SUBROUTINE dyn_hpg_init |
---|
117 | !!---------------------------------------------------------------------- |
---|
118 | !! *** ROUTINE dyn_hpg_init *** |
---|
119 | !! |
---|
120 | !! ** Purpose : initializations for the hydrostatic pressure gradient |
---|
121 | !! computation and consistency control |
---|
122 | !! |
---|
123 | !! ** Action : Read the namelist namdyn_hpg and check the consistency |
---|
124 | !! with the type of vertical coordinate used (zco, zps, sco) |
---|
125 | !!---------------------------------------------------------------------- |
---|
126 | INTEGER :: ioptio = 0 ! temporary integer |
---|
127 | !! |
---|
128 | NAMELIST/namdyn_hpg/ ln_hpg_zco, ln_hpg_zps, ln_hpg_sco, & |
---|
129 | & ln_hpg_djc, ln_hpg_prj, ln_dynhpg_imp |
---|
130 | !!---------------------------------------------------------------------- |
---|
131 | ! |
---|
132 | REWIND( numnam ) ! Read Namelist namdyn_hpg |
---|
133 | READ ( numnam, namdyn_hpg ) |
---|
134 | ! |
---|
135 | IF(lwp) THEN ! Control print |
---|
136 | WRITE(numout,*) |
---|
137 | WRITE(numout,*) 'dyn_hpg_init : hydrostatic pressure gradient initialisation' |
---|
138 | WRITE(numout,*) '~~~~~~~~~~~~' |
---|
139 | WRITE(numout,*) ' Namelist namdyn_hpg : choice of hpg scheme' |
---|
140 | WRITE(numout,*) ' z-coord. - full steps ln_hpg_zco = ', ln_hpg_zco |
---|
141 | WRITE(numout,*) ' z-coord. - partial steps (interpolation) ln_hpg_zps = ', ln_hpg_zps |
---|
142 | WRITE(numout,*) ' s-coord. (standard jacobian formulation) ln_hpg_sco = ', ln_hpg_sco |
---|
143 | WRITE(numout,*) ' s-coord. (Density Jacobian: Cubic polynomial) ln_hpg_djc = ', ln_hpg_djc |
---|
144 | WRITE(numout,*) ' s-coord. (Pressure Jacobian: Cubic polynomial) ln_hpg_prj = ', ln_hpg_prj |
---|
145 | WRITE(numout,*) ' time stepping: centered (F) or semi-implicit (T) ln_dynhpg_imp = ', ln_dynhpg_imp |
---|
146 | ENDIF |
---|
147 | ! |
---|
148 | IF( ln_hpg_djc ) & |
---|
149 | & CALL ctl_stop('dyn_hpg_init : Density Jacobian: Cubic polynominal method & |
---|
150 | & currently disabled (bugs under investigation). Please select & |
---|
151 | & either ln_hpg_sco or ln_hpg_prj instead') |
---|
152 | ! |
---|
153 | IF( lk_vvl .AND. .NOT. (ln_hpg_sco.OR.ln_hpg_prj) ) & |
---|
154 | & CALL ctl_stop('dyn_hpg_init : variable volume key_vvl requires:& |
---|
155 | & the standard jacobian formulation hpg_sco or & |
---|
156 | & the pressure jacobian formulation hpg_prj') |
---|
157 | ! |
---|
158 | ! ! Set nhpg from ln_hpg_... flags |
---|
159 | IF( ln_hpg_zco ) nhpg = 0 |
---|
160 | IF( ln_hpg_zps ) nhpg = 1 |
---|
161 | IF( ln_hpg_sco ) nhpg = 2 |
---|
162 | IF( ln_hpg_djc ) nhpg = 3 |
---|
163 | IF( ln_hpg_prj ) nhpg = 4 |
---|
164 | ! |
---|
165 | ! ! Consistency check |
---|
166 | ioptio = 0 |
---|
167 | IF( ln_hpg_zco ) ioptio = ioptio + 1 |
---|
168 | IF( ln_hpg_zps ) ioptio = ioptio + 1 |
---|
169 | IF( ln_hpg_sco ) ioptio = ioptio + 1 |
---|
170 | IF( ln_hpg_djc ) ioptio = ioptio + 1 |
---|
171 | IF( ln_hpg_prj ) ioptio = ioptio + 1 |
---|
172 | IF( ioptio /= 1 ) CALL ctl_stop( 'NO or several hydrostatic pressure gradient options used' ) |
---|
173 | ! |
---|
174 | END SUBROUTINE dyn_hpg_init |
---|
175 | |
---|
176 | |
---|
177 | SUBROUTINE hpg_zco( kt ) |
---|
178 | !!--------------------------------------------------------------------- |
---|
179 | !! *** ROUTINE hpg_zco *** |
---|
180 | !! |
---|
181 | !! ** Method : z-coordinate case, levels are horizontal surfaces. |
---|
182 | !! The now hydrostatic pressure gradient at a given level, jk, |
---|
183 | !! is computed by taking the vertical integral of the in-situ |
---|
184 | !! density gradient along the model level from the suface to that |
---|
185 | !! level: zhpi = grav ..... |
---|
186 | !! zhpj = grav ..... |
---|
187 | !! add it to the general momentum trend (ua,va). |
---|
188 | !! ua = ua - 1/e1u * zhpi |
---|
189 | !! va = va - 1/e2v * zhpj |
---|
190 | !! |
---|
191 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
---|
192 | !!---------------------------------------------------------------------- |
---|
193 | USE oce, ONLY: tsa ! (tsa) used as 2 3D workspace |
---|
194 | !! |
---|
195 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
---|
196 | !! |
---|
197 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
198 | REAL(wp) :: zcoef0, zcoef1 ! temporary scalars |
---|
199 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zhpi, zhpj |
---|
200 | !!---------------------------------------------------------------------- |
---|
201 | |
---|
202 | zhpi => tsa(:,:,:,1) |
---|
203 | zhpj => tsa(:,:,:,2) |
---|
204 | ! |
---|
205 | IF( kt == nit000 ) THEN |
---|
206 | IF(lwp) WRITE(numout,*) |
---|
207 | IF(lwp) WRITE(numout,*) 'dyn:hpg_zco : hydrostatic pressure gradient trend' |
---|
208 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ z-coordinate case ' |
---|
209 | ENDIF |
---|
210 | |
---|
211 | zcoef0 = - grav * 0.5_wp ! Local constant initialization |
---|
212 | |
---|
213 | ! Surface value |
---|
214 | DO jj = 2, jpjm1 |
---|
215 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
216 | zcoef1 = zcoef0 * fse3w(ji,jj,1) |
---|
217 | ! hydrostatic pressure gradient |
---|
218 | zhpi(ji,jj,1) = zcoef1 * ( rhd(ji+1,jj,1) - rhd(ji,jj,1) ) / e1u(ji,jj) |
---|
219 | zhpj(ji,jj,1) = zcoef1 * ( rhd(ji,jj+1,1) - rhd(ji,jj,1) ) / e2v(ji,jj) |
---|
220 | ! add to the general momentum trend |
---|
221 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) |
---|
222 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) |
---|
223 | END DO |
---|
224 | END DO |
---|
225 | |
---|
226 | ! |
---|
227 | ! interior value (2=<jk=<jpkm1) |
---|
228 | DO jk = 2, jpkm1 |
---|
229 | DO jj = 2, jpjm1 |
---|
230 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
231 | zcoef1 = zcoef0 * fse3w(ji,jj,jk) |
---|
232 | ! hydrostatic pressure gradient |
---|
233 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) & |
---|
234 | & + zcoef1 * ( ( rhd(ji+1,jj,jk)+rhd(ji+1,jj,jk-1) ) & |
---|
235 | & - ( rhd(ji ,jj,jk)+rhd(ji ,jj,jk-1) ) ) / e1u(ji,jj) |
---|
236 | |
---|
237 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) & |
---|
238 | & + zcoef1 * ( ( rhd(ji,jj+1,jk)+rhd(ji,jj+1,jk-1) ) & |
---|
239 | & - ( rhd(ji,jj, jk)+rhd(ji,jj ,jk-1) ) ) / e2v(ji,jj) |
---|
240 | ! add to the general momentum trend |
---|
241 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) |
---|
242 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) |
---|
243 | END DO |
---|
244 | END DO |
---|
245 | END DO |
---|
246 | ! |
---|
247 | END SUBROUTINE hpg_zco |
---|
248 | |
---|
249 | |
---|
250 | SUBROUTINE hpg_zps( kt ) |
---|
251 | !!--------------------------------------------------------------------- |
---|
252 | !! *** ROUTINE hpg_zps *** |
---|
253 | !! |
---|
254 | !! ** Method : z-coordinate plus partial steps case. blahblah... |
---|
255 | !! |
---|
256 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
---|
257 | !!---------------------------------------------------------------------- |
---|
258 | USE oce, ONLY: tsa ! (tsa) used as 2 3D workspace |
---|
259 | !! |
---|
260 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
---|
261 | !! |
---|
262 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
263 | INTEGER :: iku, ikv ! temporary integers |
---|
264 | REAL(wp) :: zcoef0, zcoef1, zcoef2, zcoef3 ! temporary scalars |
---|
265 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zhpi, zhpj |
---|
266 | !!---------------------------------------------------------------------- |
---|
267 | |
---|
268 | zhpi => tsa(:,:,:,1) |
---|
269 | zhpj => tsa(:,:,:,2) |
---|
270 | ! |
---|
271 | IF( kt == nit000 ) THEN |
---|
272 | IF(lwp) WRITE(numout,*) |
---|
273 | IF(lwp) WRITE(numout,*) 'dyn:hpg_zps : hydrostatic pressure gradient trend' |
---|
274 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ z-coordinate with partial steps - vector optimization' |
---|
275 | ENDIF |
---|
276 | |
---|
277 | |
---|
278 | ! Local constant initialization |
---|
279 | zcoef0 = - grav * 0.5_wp |
---|
280 | |
---|
281 | ! Surface value (also valid in partial step case) |
---|
282 | DO jj = 2, jpjm1 |
---|
283 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
284 | zcoef1 = zcoef0 * fse3w(ji,jj,1) |
---|
285 | ! hydrostatic pressure gradient |
---|
286 | zhpi(ji,jj,1) = zcoef1 * ( rhd(ji+1,jj ,1) - rhd(ji,jj,1) ) / e1u(ji,jj) |
---|
287 | zhpj(ji,jj,1) = zcoef1 * ( rhd(ji ,jj+1,1) - rhd(ji,jj,1) ) / e2v(ji,jj) |
---|
288 | ! add to the general momentum trend |
---|
289 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) |
---|
290 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) |
---|
291 | END DO |
---|
292 | END DO |
---|
293 | |
---|
294 | |
---|
295 | ! interior value (2=<jk=<jpkm1) |
---|
296 | DO jk = 2, jpkm1 |
---|
297 | DO jj = 2, jpjm1 |
---|
298 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
299 | zcoef1 = zcoef0 * fse3w(ji,jj,jk) |
---|
300 | ! hydrostatic pressure gradient |
---|
301 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) & |
---|
302 | & + zcoef1 * ( ( rhd(ji+1,jj,jk) + rhd(ji+1,jj,jk-1) ) & |
---|
303 | & - ( rhd(ji ,jj,jk) + rhd(ji ,jj,jk-1) ) ) / e1u(ji,jj) |
---|
304 | |
---|
305 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) & |
---|
306 | & + zcoef1 * ( ( rhd(ji,jj+1,jk) + rhd(ji,jj+1,jk-1) ) & |
---|
307 | & - ( rhd(ji,jj, jk) + rhd(ji,jj ,jk-1) ) ) / e2v(ji,jj) |
---|
308 | ! add to the general momentum trend |
---|
309 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) |
---|
310 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) |
---|
311 | END DO |
---|
312 | END DO |
---|
313 | END DO |
---|
314 | |
---|
315 | |
---|
316 | ! partial steps correction at the last level (use gru & grv computed in zpshde.F90) |
---|
317 | # if defined key_vectopt_loop |
---|
318 | jj = 1 |
---|
319 | DO ji = jpi+2, jpij-jpi-1 ! vector opt. (forced unrolling) |
---|
320 | # else |
---|
321 | DO jj = 2, jpjm1 |
---|
322 | DO ji = 2, jpim1 |
---|
323 | # endif |
---|
324 | iku = mbku(ji,jj) |
---|
325 | ikv = mbkv(ji,jj) |
---|
326 | zcoef2 = zcoef0 * MIN( fse3w(ji,jj,iku), fse3w(ji+1,jj ,iku) ) |
---|
327 | zcoef3 = zcoef0 * MIN( fse3w(ji,jj,ikv), fse3w(ji ,jj+1,ikv) ) |
---|
328 | IF( iku > 1 ) THEN ! on i-direction (level 2 or more) |
---|
329 | ua (ji,jj,iku) = ua(ji,jj,iku) - zhpi(ji,jj,iku) ! subtract old value |
---|
330 | zhpi(ji,jj,iku) = zhpi(ji,jj,iku-1) & ! compute the new one |
---|
331 | & + zcoef2 * ( rhd(ji+1,jj,iku-1) - rhd(ji,jj,iku-1) + gru(ji,jj) ) / e1u(ji,jj) |
---|
332 | ua (ji,jj,iku) = ua(ji,jj,iku) + zhpi(ji,jj,iku) ! add the new one to the general momentum trend |
---|
333 | ENDIF |
---|
334 | IF( ikv > 1 ) THEN ! on j-direction (level 2 or more) |
---|
335 | va (ji,jj,ikv) = va(ji,jj,ikv) - zhpj(ji,jj,ikv) ! subtract old value |
---|
336 | zhpj(ji,jj,ikv) = zhpj(ji,jj,ikv-1) & ! compute the new one |
---|
337 | & + zcoef3 * ( rhd(ji,jj+1,ikv-1) - rhd(ji,jj,ikv-1) + grv(ji,jj) ) / e2v(ji,jj) |
---|
338 | va (ji,jj,ikv) = va(ji,jj,ikv) + zhpj(ji,jj,ikv) ! add the new one to the general momentum trend |
---|
339 | ENDIF |
---|
340 | # if ! defined key_vectopt_loop |
---|
341 | END DO |
---|
342 | # endif |
---|
343 | END DO |
---|
344 | ! |
---|
345 | |
---|
346 | END SUBROUTINE hpg_zps |
---|
347 | |
---|
348 | |
---|
349 | SUBROUTINE hpg_sco( kt ) |
---|
350 | !!--------------------------------------------------------------------- |
---|
351 | !! *** ROUTINE hpg_sco *** |
---|
352 | !! |
---|
353 | !! ** Method : s-coordinate case. Jacobian scheme. |
---|
354 | !! The now hydrostatic pressure gradient at a given level, jk, |
---|
355 | !! is computed by taking the vertical integral of the in-situ |
---|
356 | !! density gradient along the model level from the suface to that |
---|
357 | !! level. s-coordinates (ln_sco): a corrective term is added |
---|
358 | !! to the horizontal pressure gradient : |
---|
359 | !! zhpi = grav ..... + 1/e1u mi(rhd) di[ grav dep3w ] |
---|
360 | !! zhpj = grav ..... + 1/e2v mj(rhd) dj[ grav dep3w ] |
---|
361 | !! add it to the general momentum trend (ua,va). |
---|
362 | !! ua = ua - 1/e1u * zhpi |
---|
363 | !! va = va - 1/e2v * zhpj |
---|
364 | !! |
---|
365 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
---|
366 | !!---------------------------------------------------------------------- |
---|
367 | USE oce, ONLY: tsa ! (tsa) used as 2 3D workspace |
---|
368 | !! |
---|
369 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
---|
370 | !! |
---|
371 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
372 | REAL(wp) :: zcoef0, zuap, zvap, znad ! temporary scalars |
---|
373 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zhpi, zhpj |
---|
374 | !!---------------------------------------------------------------------- |
---|
375 | |
---|
376 | zhpi => tsa(:,:,:,1) |
---|
377 | zhpj => tsa(:,:,:,2) |
---|
378 | ! |
---|
379 | IF( kt == nit000 ) THEN |
---|
380 | IF(lwp) WRITE(numout,*) |
---|
381 | IF(lwp) WRITE(numout,*) 'dyn:hpg_sco : hydrostatic pressure gradient trend' |
---|
382 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ s-coordinate case, OPA original scheme used' |
---|
383 | ENDIF |
---|
384 | |
---|
385 | ! Local constant initialization |
---|
386 | zcoef0 = - grav * 0.5_wp |
---|
387 | ! To use density and not density anomaly |
---|
388 | IF ( lk_vvl ) THEN ; znad = 1._wp ! Variable volume |
---|
389 | ELSE ; znad = 0._wp ! Fixed volume |
---|
390 | ENDIF |
---|
391 | |
---|
392 | ! Surface value |
---|
393 | DO jj = 2, jpjm1 |
---|
394 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
395 | ! hydrostatic pressure gradient along s-surfaces |
---|
396 | zhpi(ji,jj,1) = zcoef0 / e1u(ji,jj) * ( fse3w(ji+1,jj ,1) * ( znad + rhd(ji+1,jj ,1) ) & |
---|
397 | & - fse3w(ji ,jj ,1) * ( znad + rhd(ji ,jj ,1) ) ) |
---|
398 | zhpj(ji,jj,1) = zcoef0 / e2v(ji,jj) * ( fse3w(ji ,jj+1,1) * ( znad + rhd(ji ,jj+1,1) ) & |
---|
399 | & - fse3w(ji ,jj ,1) * ( znad + rhd(ji ,jj ,1) ) ) |
---|
400 | ! s-coordinate pressure gradient correction |
---|
401 | zuap = -zcoef0 * ( rhd (ji+1,jj,1) + rhd (ji,jj,1) + 2._wp * znad ) & |
---|
402 | & * ( fsde3w(ji+1,jj,1) - fsde3w(ji,jj,1) ) / e1u(ji,jj) |
---|
403 | zvap = -zcoef0 * ( rhd (ji,jj+1,1) + rhd (ji,jj,1) + 2._wp * znad ) & |
---|
404 | & * ( fsde3w(ji,jj+1,1) - fsde3w(ji,jj,1) ) / e2v(ji,jj) |
---|
405 | ! add to the general momentum trend |
---|
406 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) + zuap |
---|
407 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) + zvap |
---|
408 | END DO |
---|
409 | END DO |
---|
410 | |
---|
411 | ! interior value (2=<jk=<jpkm1) |
---|
412 | DO jk = 2, jpkm1 |
---|
413 | DO jj = 2, jpjm1 |
---|
414 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
415 | ! hydrostatic pressure gradient along s-surfaces |
---|
416 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) + zcoef0 / e1u(ji,jj) & |
---|
417 | & * ( fse3w(ji+1,jj,jk) * ( rhd(ji+1,jj,jk) + rhd(ji+1,jj,jk-1) + 2*znad ) & |
---|
418 | & - fse3w(ji ,jj,jk) * ( rhd(ji ,jj,jk) + rhd(ji ,jj,jk-1) + 2*znad ) ) |
---|
419 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) + zcoef0 / e2v(ji,jj) & |
---|
420 | & * ( fse3w(ji,jj+1,jk) * ( rhd(ji,jj+1,jk) + rhd(ji,jj+1,jk-1) + 2*znad ) & |
---|
421 | & - fse3w(ji,jj ,jk) * ( rhd(ji,jj, jk) + rhd(ji,jj ,jk-1) + 2*znad ) ) |
---|
422 | ! s-coordinate pressure gradient correction |
---|
423 | zuap = -zcoef0 * ( rhd (ji+1,jj ,jk) + rhd (ji,jj,jk) + 2._wp * znad ) & |
---|
424 | & * ( fsde3w(ji+1,jj ,jk) - fsde3w(ji,jj,jk) ) / e1u(ji,jj) |
---|
425 | zvap = -zcoef0 * ( rhd (ji ,jj+1,jk) + rhd (ji,jj,jk) + 2._wp * znad ) & |
---|
426 | & * ( fsde3w(ji ,jj+1,jk) - fsde3w(ji,jj,jk) ) / e2v(ji,jj) |
---|
427 | ! add to the general momentum trend |
---|
428 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) + zuap |
---|
429 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) + zvap |
---|
430 | END DO |
---|
431 | END DO |
---|
432 | END DO |
---|
433 | ! |
---|
434 | END SUBROUTINE hpg_sco |
---|
435 | |
---|
436 | SUBROUTINE hpg_djc( kt ) |
---|
437 | !!--------------------------------------------------------------------- |
---|
438 | !! *** ROUTINE hpg_djc *** |
---|
439 | !! |
---|
440 | !! ** Method : Density Jacobian with Cubic polynomial scheme |
---|
441 | !! |
---|
442 | !! Reference: Shchepetkin and McWilliams, J. Geophys. Res., 108(C3), 3090, 2003 |
---|
443 | !!---------------------------------------------------------------------- |
---|
444 | USE oce , ONLY: tsa ! (tsa) used as 2 3D workspace |
---|
445 | !! |
---|
446 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
---|
447 | !! |
---|
448 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
449 | REAL(wp) :: zcoef0, zep, cffw ! temporary scalars |
---|
450 | REAL(wp) :: z1_10, cffu, cffx ! " " |
---|
451 | REAL(wp) :: z1_12, cffv, cffy ! " " |
---|
452 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zhpi, zhpj |
---|
453 | REAL(wp), POINTER, DIMENSION(:,:,:) :: dzx, dzy, dzz, dzu, dzv, dzw |
---|
454 | REAL(wp), POINTER, DIMENSION(:,:,:) :: drhox, drhoy, drhoz, drhou, drhov, drhow |
---|
455 | REAL(wp), POINTER, DIMENSION(:,:,:) :: rho_i, rho_j, rho_k |
---|
456 | !!---------------------------------------------------------------------- |
---|
457 | ! |
---|
458 | CALL wrk_alloc( jpi, jpj, jpk, dzx , dzy , dzz , dzu , dzv , dzw ) |
---|
459 | CALL wrk_alloc( jpi, jpj, jpk, drhox, drhoy, drhoz, drhou, drhov, drhow ) |
---|
460 | CALL wrk_alloc( jpi, jpj, jpk, rho_i, rho_j, rho_k ) |
---|
461 | zhpi => tsa(:,:,:,1) |
---|
462 | zhpj => tsa(:,:,:,2) |
---|
463 | ! |
---|
464 | |
---|
465 | IF( kt == nit000 ) THEN |
---|
466 | IF(lwp) WRITE(numout,*) |
---|
467 | IF(lwp) WRITE(numout,*) 'dyn:hpg_djc : hydrostatic pressure gradient trend' |
---|
468 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ s-coordinate case, density Jacobian with cubic polynomial scheme' |
---|
469 | ENDIF |
---|
470 | |
---|
471 | ! Local constant initialization |
---|
472 | zcoef0 = - grav * 0.5_wp |
---|
473 | z1_10 = 1._wp / 10._wp |
---|
474 | z1_12 = 1._wp / 12._wp |
---|
475 | |
---|
476 | !---------------------------------------------------------------------------------------- |
---|
477 | ! compute and store in provisional arrays elementary vertical and horizontal differences |
---|
478 | !---------------------------------------------------------------------------------------- |
---|
479 | |
---|
480 | !!bug gm Not a true bug, but... dzz=e3w for dzx, dzy verify what it is really |
---|
481 | |
---|
482 | DO jk = 2, jpkm1 |
---|
483 | DO jj = 2, jpjm1 |
---|
484 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
485 | drhoz(ji,jj,jk) = rhd (ji ,jj ,jk) - rhd (ji,jj,jk-1) |
---|
486 | dzz (ji,jj,jk) = fsde3w(ji ,jj ,jk) - fsde3w(ji,jj,jk-1) |
---|
487 | drhox(ji,jj,jk) = rhd (ji+1,jj ,jk) - rhd (ji,jj,jk ) |
---|
488 | dzx (ji,jj,jk) = fsde3w(ji+1,jj ,jk) - fsde3w(ji,jj,jk ) |
---|
489 | drhoy(ji,jj,jk) = rhd (ji ,jj+1,jk) - rhd (ji,jj,jk ) |
---|
490 | dzy (ji,jj,jk) = fsde3w(ji ,jj+1,jk) - fsde3w(ji,jj,jk ) |
---|
491 | END DO |
---|
492 | END DO |
---|
493 | END DO |
---|
494 | |
---|
495 | !------------------------------------------------------------------------- |
---|
496 | ! compute harmonic averages using eq. 5.18 |
---|
497 | !------------------------------------------------------------------------- |
---|
498 | zep = 1.e-15 |
---|
499 | |
---|
500 | !!bug gm drhoz not defined at level 1 and used (jk-1 with jk=2) |
---|
501 | !!bug gm idem for drhox, drhoy et ji=jpi and jj=jpj |
---|
502 | |
---|
503 | DO jk = 2, jpkm1 |
---|
504 | DO jj = 2, jpjm1 |
---|
505 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
506 | cffw = 2._wp * drhoz(ji ,jj ,jk) * drhoz(ji,jj,jk-1) |
---|
507 | |
---|
508 | cffu = 2._wp * drhox(ji+1,jj ,jk) * drhox(ji,jj,jk ) |
---|
509 | cffx = 2._wp * dzx (ji+1,jj ,jk) * dzx (ji,jj,jk ) |
---|
510 | |
---|
511 | cffv = 2._wp * drhoy(ji ,jj+1,jk) * drhoy(ji,jj,jk ) |
---|
512 | cffy = 2._wp * dzy (ji ,jj+1,jk) * dzy (ji,jj,jk ) |
---|
513 | |
---|
514 | IF( cffw > zep) THEN |
---|
515 | drhow(ji,jj,jk) = 2._wp * drhoz(ji,jj,jk) * drhoz(ji,jj,jk-1) & |
---|
516 | & / ( drhoz(ji,jj,jk) + drhoz(ji,jj,jk-1) ) |
---|
517 | ELSE |
---|
518 | drhow(ji,jj,jk) = 0._wp |
---|
519 | ENDIF |
---|
520 | |
---|
521 | dzw(ji,jj,jk) = 2._wp * dzz(ji,jj,jk) * dzz(ji,jj,jk-1) & |
---|
522 | & / ( dzz(ji,jj,jk) + dzz(ji,jj,jk-1) ) |
---|
523 | |
---|
524 | IF( cffu > zep ) THEN |
---|
525 | drhou(ji,jj,jk) = 2._wp * drhox(ji+1,jj,jk) * drhox(ji,jj,jk) & |
---|
526 | & / ( drhox(ji+1,jj,jk) + drhox(ji,jj,jk) ) |
---|
527 | ELSE |
---|
528 | drhou(ji,jj,jk ) = 0._wp |
---|
529 | ENDIF |
---|
530 | |
---|
531 | IF( cffx > zep ) THEN |
---|
532 | dzu(ji,jj,jk) = 2._wp * dzx(ji+1,jj,jk) * dzx(ji,jj,jk) & |
---|
533 | & / ( dzx(ji+1,jj,jk) + dzx(ji,jj,jk) ) |
---|
534 | ELSE |
---|
535 | dzu(ji,jj,jk) = 0._wp |
---|
536 | ENDIF |
---|
537 | |
---|
538 | IF( cffv > zep ) THEN |
---|
539 | drhov(ji,jj,jk) = 2._wp * drhoy(ji,jj+1,jk) * drhoy(ji,jj,jk) & |
---|
540 | & / ( drhoy(ji,jj+1,jk) + drhoy(ji,jj,jk) ) |
---|
541 | ELSE |
---|
542 | drhov(ji,jj,jk) = 0._wp |
---|
543 | ENDIF |
---|
544 | |
---|
545 | IF( cffy > zep ) THEN |
---|
546 | dzv(ji,jj,jk) = 2._wp * dzy(ji,jj+1,jk) * dzy(ji,jj,jk) & |
---|
547 | & / ( dzy(ji,jj+1,jk) + dzy(ji,jj,jk) ) |
---|
548 | ELSE |
---|
549 | dzv(ji,jj,jk) = 0._wp |
---|
550 | ENDIF |
---|
551 | |
---|
552 | END DO |
---|
553 | END DO |
---|
554 | END DO |
---|
555 | |
---|
556 | !---------------------------------------------------------------------------------- |
---|
557 | ! apply boundary conditions at top and bottom using 5.36-5.37 |
---|
558 | !---------------------------------------------------------------------------------- |
---|
559 | drhow(:,:, 1 ) = 1.5_wp * ( drhoz(:,:, 2 ) - drhoz(:,:, 1 ) ) - 0.5_wp * drhow(:,:, 2 ) |
---|
560 | drhou(:,:, 1 ) = 1.5_wp * ( drhox(:,:, 2 ) - drhox(:,:, 1 ) ) - 0.5_wp * drhou(:,:, 2 ) |
---|
561 | drhov(:,:, 1 ) = 1.5_wp * ( drhoy(:,:, 2 ) - drhoy(:,:, 1 ) ) - 0.5_wp * drhov(:,:, 2 ) |
---|
562 | |
---|
563 | drhow(:,:,jpk) = 1.5_wp * ( drhoz(:,:,jpk) - drhoz(:,:,jpkm1) ) - 0.5_wp * drhow(:,:,jpkm1) |
---|
564 | drhou(:,:,jpk) = 1.5_wp * ( drhox(:,:,jpk) - drhox(:,:,jpkm1) ) - 0.5_wp * drhou(:,:,jpkm1) |
---|
565 | drhov(:,:,jpk) = 1.5_wp * ( drhoy(:,:,jpk) - drhoy(:,:,jpkm1) ) - 0.5_wp * drhov(:,:,jpkm1) |
---|
566 | |
---|
567 | |
---|
568 | !-------------------------------------------------------------- |
---|
569 | ! Upper half of top-most grid box, compute and store |
---|
570 | !------------------------------------------------------------- |
---|
571 | |
---|
572 | !!bug gm : e3w-de3w = 0.5*e3w .... and de3w(2)-de3w(1)=e3w(2) .... to be verified |
---|
573 | ! true if de3w is really defined as the sum of the e3w scale factors as, it seems to me, it should be |
---|
574 | |
---|
575 | DO jj = 2, jpjm1 |
---|
576 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
577 | rho_k(ji,jj,1) = -grav * ( fse3w(ji,jj,1) - fsde3w(ji,jj,1) ) & |
---|
578 | & * ( rhd(ji,jj,1) & |
---|
579 | & + 0.5_wp * ( rhd(ji,jj,2) - rhd(ji,jj,1) ) & |
---|
580 | & * ( fse3w (ji,jj,1) - fsde3w(ji,jj,1) ) & |
---|
581 | & / ( fsde3w(ji,jj,2) - fsde3w(ji,jj,1) ) ) |
---|
582 | END DO |
---|
583 | END DO |
---|
584 | |
---|
585 | !!bug gm : here also, simplification is possible |
---|
586 | !!bug gm : optimisation: 1/10 and 1/12 the division should be done before the loop |
---|
587 | |
---|
588 | DO jk = 2, jpkm1 |
---|
589 | DO jj = 2, jpjm1 |
---|
590 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
591 | |
---|
592 | rho_k(ji,jj,jk) = zcoef0 * ( rhd (ji,jj,jk) + rhd (ji,jj,jk-1) ) & |
---|
593 | & * ( fsde3w(ji,jj,jk) - fsde3w(ji,jj,jk-1) ) & |
---|
594 | & - grav * z1_10 * ( & |
---|
595 | & ( drhow (ji,jj,jk) - drhow (ji,jj,jk-1) ) & |
---|
596 | & * ( fsde3w(ji,jj,jk) - fsde3w(ji,jj,jk-1) - z1_12 * ( dzw (ji,jj,jk) + dzw (ji,jj,jk-1) ) ) & |
---|
597 | & - ( dzw (ji,jj,jk) - dzw (ji,jj,jk-1) ) & |
---|
598 | & * ( rhd (ji,jj,jk) - rhd (ji,jj,jk-1) - z1_12 * ( drhow(ji,jj,jk) + drhow(ji,jj,jk-1) ) ) & |
---|
599 | & ) |
---|
600 | |
---|
601 | rho_i(ji,jj,jk) = zcoef0 * ( rhd (ji+1,jj,jk) + rhd (ji,jj,jk) ) & |
---|
602 | & * ( fsde3w(ji+1,jj,jk) - fsde3w(ji,jj,jk) ) & |
---|
603 | & - grav* z1_10 * ( & |
---|
604 | & ( drhou (ji+1,jj,jk) - drhou (ji,jj,jk) ) & |
---|
605 | & * ( fsde3w(ji+1,jj,jk) - fsde3w(ji,jj,jk) - z1_12 * ( dzu (ji+1,jj,jk) + dzu (ji,jj,jk) ) ) & |
---|
606 | & - ( dzu (ji+1,jj,jk) - dzu (ji,jj,jk) ) & |
---|
607 | & * ( rhd (ji+1,jj,jk) - rhd (ji,jj,jk) - z1_12 * ( drhou(ji+1,jj,jk) + drhou(ji,jj,jk) ) ) & |
---|
608 | & ) |
---|
609 | |
---|
610 | rho_j(ji,jj,jk) = zcoef0 * ( rhd (ji,jj+1,jk) + rhd (ji,jj,jk) ) & |
---|
611 | & * ( fsde3w(ji,jj+1,jk) - fsde3w(ji,jj,jk) ) & |
---|
612 | & - grav* z1_10 * ( & |
---|
613 | & ( drhov (ji,jj+1,jk) - drhov (ji,jj,jk) ) & |
---|
614 | & * ( fsde3w(ji,jj+1,jk) - fsde3w(ji,jj,jk) - z1_12 * ( dzv (ji,jj+1,jk) + dzv (ji,jj,jk) ) ) & |
---|
615 | & - ( dzv (ji,jj+1,jk) - dzv (ji,jj,jk) ) & |
---|
616 | & * ( rhd (ji,jj+1,jk) - rhd (ji,jj,jk) - z1_12 * ( drhov(ji,jj+1,jk) + drhov(ji,jj,jk) ) ) & |
---|
617 | & ) |
---|
618 | |
---|
619 | END DO |
---|
620 | END DO |
---|
621 | END DO |
---|
622 | CALL lbc_lnk(rho_k,'W',1.) |
---|
623 | CALL lbc_lnk(rho_i,'U',1.) |
---|
624 | CALL lbc_lnk(rho_j,'V',1.) |
---|
625 | |
---|
626 | |
---|
627 | ! --------------- |
---|
628 | ! Surface value |
---|
629 | ! --------------- |
---|
630 | DO jj = 2, jpjm1 |
---|
631 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
632 | zhpi(ji,jj,1) = ( rho_k(ji+1,jj ,1) - rho_k(ji,jj,1) - rho_i(ji,jj,1) ) / e1u(ji,jj) |
---|
633 | zhpj(ji,jj,1) = ( rho_k(ji ,jj+1,1) - rho_k(ji,jj,1) - rho_j(ji,jj,1) ) / e2v(ji,jj) |
---|
634 | ! add to the general momentum trend |
---|
635 | ua(ji,jj,1) = ua(ji,jj,1) + zhpi(ji,jj,1) |
---|
636 | va(ji,jj,1) = va(ji,jj,1) + zhpj(ji,jj,1) |
---|
637 | END DO |
---|
638 | END DO |
---|
639 | |
---|
640 | ! ---------------- |
---|
641 | ! interior value (2=<jk=<jpkm1) |
---|
642 | ! ---------------- |
---|
643 | DO jk = 2, jpkm1 |
---|
644 | DO jj = 2, jpjm1 |
---|
645 | DO ji = fs_2, fs_jpim1 ! vector opt. |
---|
646 | ! hydrostatic pressure gradient along s-surfaces |
---|
647 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) & |
---|
648 | & + ( ( rho_k(ji+1,jj,jk) - rho_k(ji,jj,jk ) ) & |
---|
649 | & - ( rho_i(ji ,jj,jk) - rho_i(ji,jj,jk-1) ) ) / e1u(ji,jj) |
---|
650 | zhpj(ji,jj,jk) = zhpj(ji,jj,jk-1) & |
---|
651 | & + ( ( rho_k(ji,jj+1,jk) - rho_k(ji,jj,jk ) ) & |
---|
652 | & -( rho_j(ji,jj ,jk) - rho_j(ji,jj,jk-1) ) ) / e2v(ji,jj) |
---|
653 | ! add to the general momentum trend |
---|
654 | ua(ji,jj,jk) = ua(ji,jj,jk) + zhpi(ji,jj,jk) |
---|
655 | va(ji,jj,jk) = va(ji,jj,jk) + zhpj(ji,jj,jk) |
---|
656 | END DO |
---|
657 | END DO |
---|
658 | END DO |
---|
659 | ! |
---|
660 | CALL wrk_dealloc( jpi, jpj, jpk, dzx , dzy , dzz , dzu , dzv , dzw ) |
---|
661 | CALL wrk_dealloc( jpi, jpj, jpk, drhox, drhoy, drhoz, drhou, drhov, drhow ) |
---|
662 | CALL wrk_dealloc( jpi, jpj, jpk, rho_i, rho_j, rho_k ) |
---|
663 | ! |
---|
664 | END SUBROUTINE hpg_djc |
---|
665 | |
---|
666 | |
---|
667 | SUBROUTINE hpg_prj( kt ) |
---|
668 | !!--------------------------------------------------------------------- |
---|
669 | !! *** ROUTINE hpg_prj *** |
---|
670 | !! |
---|
671 | !! ** Method : s-coordinate case. |
---|
672 | !! A Pressure-Jacobian horizontal pressure gradient method |
---|
673 | !! based on the constrained cubic-spline interpolation for |
---|
674 | !! all vertical coordinate systems |
---|
675 | !! |
---|
676 | !! ** Action : - Update (ua,va) with the now hydrastatic pressure trend |
---|
677 | !! - Save the trend (l_trddyn=T) |
---|
678 | !! |
---|
679 | !!---------------------------------------------------------------------- |
---|
680 | USE oce , ONLY: tsa ! (tsa) used as 2 3D workspace |
---|
681 | !!---------------------------------------------------------------------- |
---|
682 | !! |
---|
683 | INTEGER, PARAMETER :: polynomial_type = 1 ! 1: cubic spline, 2: linear |
---|
684 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
---|
685 | !! |
---|
686 | INTEGER :: ji, jj, jk, jkk ! dummy loop indices |
---|
687 | REAL(wp) :: zcoef0, znad ! temporary scalars |
---|
688 | !! |
---|
689 | !! The local variables for the correction term |
---|
690 | INTEGER :: jk1, jis, jid, jjs, jjd |
---|
691 | REAL(wp) :: zuijk, zvijk, zpwes, zpwed, zpnss, zpnsd, zdeps |
---|
692 | REAL(wp) :: zrhdt1 |
---|
693 | REAL(wp) :: zdpdx1, zdpdx2, zdpdy1, zdpdy2 |
---|
694 | INTEGER :: zbhitwe, zbhitns |
---|
695 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zdeptht, zrhh |
---|
696 | REAL(wp), POINTER, DIMENSION(:,:,:) :: zhpi, zu, zv, fsp, xsp, asp, bsp, csp, dsp |
---|
697 | !!---------------------------------------------------------------------- |
---|
698 | ! |
---|
699 | CALL wrk_alloc( jpi, jpj, jpk, zhpi, zu, zv, fsp, xsp, asp, bsp, csp, dsp ) |
---|
700 | zdeptht => tsa(:,:,:,1) |
---|
701 | zrhh => tsa(:,:,:,2) |
---|
702 | ! |
---|
703 | IF( kt == nit000 ) THEN |
---|
704 | IF(lwp) WRITE(numout,*) |
---|
705 | IF(lwp) WRITE(numout,*) 'dyn:hpg_prj : hydrostatic pressure gradient trend' |
---|
706 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~ s-coordinate case, cubic spline pressure Jacobian' |
---|
707 | ENDIF |
---|
708 | |
---|
709 | !!---------------------------------------------------------------------- |
---|
710 | ! Local constant initialization |
---|
711 | zcoef0 = - grav |
---|
712 | znad = 0.0_wp |
---|
713 | IF( lk_vvl ) znad = 1._wp |
---|
714 | |
---|
715 | ! Clean 3-D work arrays |
---|
716 | zhpi(:,:,:) = 0._wp |
---|
717 | zrhh(:,:,:) = rhd(:,:,:) |
---|
718 | |
---|
719 | ! Preparing vertical density profile for hybrid-sco coordinate |
---|
720 | DO jj = 1, jpj |
---|
721 | DO ji = 1, jpi |
---|
722 | jk = mbathy(ji,jj) |
---|
723 | IF( jk <= 0 ) THEN; zrhh(ji,jj,:) = 0._wp |
---|
724 | ELSE IF(jk == 1) THEN; zrhh(ji,jj, jk+1:jpk) = rhd(ji,jj,jk) |
---|
725 | ELSE IF(jk < jpkm1) THEN |
---|
726 | DO jkk = jk+1, jpk |
---|
727 | zrhh(ji,jj,jkk) = interp1(fsde3w(ji,jj,jkk), fsde3w(ji,jj,jkk-1), & |
---|
728 | fsde3w(ji,jj,jkk-2), rhd(ji,jj,jkk-1), rhd(ji,jj,jkk-2)) |
---|
729 | END DO |
---|
730 | ENDIF |
---|
731 | END DO |
---|
732 | END DO |
---|
733 | |
---|
734 | DO jj = 1, jpj |
---|
735 | DO ji = 1, jpi |
---|
736 | zdeptht(ji,jj,1) = 0.5_wp * fse3w(ji,jj,1) |
---|
737 | zdeptht(ji,jj,1) = zdeptht(ji,jj,1) - sshn(ji,jj) * znad |
---|
738 | DO jk = 2, jpk |
---|
739 | zdeptht(ji,jj,jk) = zdeptht(ji,jj,jk-1) + fse3w(ji,jj,jk) |
---|
740 | END DO |
---|
741 | END DO |
---|
742 | END DO |
---|
743 | |
---|
744 | DO jk = 1, jpkm1 |
---|
745 | DO jj = 1, jpj |
---|
746 | DO ji = 1, jpi |
---|
747 | fsp(ji,jj,jk) = zrhh(ji,jj,jk) |
---|
748 | xsp(ji,jj,jk) = zdeptht(ji,jj,jk) |
---|
749 | END DO |
---|
750 | END DO |
---|
751 | END DO |
---|
752 | |
---|
753 | ! Construct the vertical density profile with the |
---|
754 | ! constrained cubic spline interpolation |
---|
755 | CALL cspline(fsp,xsp,asp,bsp,csp,dsp,polynomial_type) |
---|
756 | |
---|
757 | ! Calculate the hydrostatic pressure at T(ji,jj,1) |
---|
758 | DO jj = 2, jpj |
---|
759 | DO ji = 2, jpi |
---|
760 | zrhdt1 = zrhh(ji,jj,1) - interp3(zdeptht(ji,jj,1),asp(ji,jj,1), & |
---|
761 | bsp(ji,jj,1), csp(ji,jj,1), & |
---|
762 | dsp(ji,jj,1) ) * 0.5_wp * zdeptht(ji,jj,1) |
---|
763 | zrhdt1 = MAX(zrhdt1, 1000._wp - rau0) ! no lighter than fresh water |
---|
764 | |
---|
765 | ! assuming linear profile across the top half surface layer |
---|
766 | zhpi(ji,jj,1) = 0.5_wp * fse3w(ji,jj,1) * zrhdt1 |
---|
767 | END DO |
---|
768 | END DO |
---|
769 | |
---|
770 | ! Calculate the pressure at T(ji,jj,2:jpkm1) |
---|
771 | DO jk = 2, jpkm1 |
---|
772 | DO jj = 2, jpj |
---|
773 | DO ji = 2, jpi |
---|
774 | zhpi(ji,jj,jk) = zhpi(ji,jj,jk-1) + & |
---|
775 | integ2(zdeptht(ji,jj,jk-1), zdeptht(ji,jj,jk),& |
---|
776 | asp(ji,jj,jk-1), bsp(ji,jj,jk-1), & |
---|
777 | csp(ji,jj,jk-1), dsp(ji,jj,jk-1)) |
---|
778 | END DO |
---|
779 | END DO |
---|
780 | END DO |
---|
781 | |
---|
782 | ! Z coordinate of U(ji,jj,1:jpkm1) and V(ji,jj,1:jpkm1) |
---|
783 | DO jj = 2, jpjm1 |
---|
784 | DO ji = 2, jpim1 |
---|
785 | zu(ji,jj,1) = - ( fse3u(ji,jj,1) - sshu_n(ji,jj) * znad) |
---|
786 | zv(ji,jj,1) = - ( fse3v(ji,jj,1) - sshv_n(ji,jj) * znad) |
---|
787 | END DO |
---|
788 | END DO |
---|
789 | |
---|
790 | DO jk = 2, jpkm1 |
---|
791 | DO jj = 2, jpjm1 |
---|
792 | DO ji = 2, jpim1 |
---|
793 | zu(ji,jj,jk) = zu(ji,jj,jk-1)- fse3u(ji,jj,jk) |
---|
794 | zv(ji,jj,jk) = zv(ji,jj,jk-1)- fse3v(ji,jj,jk) |
---|
795 | END DO |
---|
796 | END DO |
---|
797 | END DO |
---|
798 | |
---|
799 | DO jk = 1, jpkm1 |
---|
800 | DO jj = 2, jpjm1 |
---|
801 | DO ji = 2, jpim1 |
---|
802 | zu(ji,jj,jk) = zu(ji,jj,jk) + 0.5_wp * fse3u(ji,jj,jk) |
---|
803 | zv(ji,jj,jk) = zv(ji,jj,jk) + 0.5_wp * fse3v(ji,jj,jk) |
---|
804 | END DO |
---|
805 | END DO |
---|
806 | END DO |
---|
807 | |
---|
808 | DO jk = 1, jpkm1 |
---|
809 | DO jj = 2, jpjm1 |
---|
810 | DO ji = 2, jpim1 |
---|
811 | zpwes = 0._wp; zpwed = 0._wp |
---|
812 | zpnss = 0._wp; zpnsd = 0._wp |
---|
813 | zuijk = zu(ji,jj,jk) |
---|
814 | zvijk = zv(ji,jj,jk) |
---|
815 | |
---|
816 | !!!!! for u equation |
---|
817 | IF( jk <= mbku(ji,jj) ) THEN |
---|
818 | IF( -zdeptht(ji+1,jj,mbku(ji,jj)) >= -zdeptht(ji,jj,mbku(ji,jj)) ) THEN |
---|
819 | jis = ji + 1; jid = ji |
---|
820 | ELSE |
---|
821 | jis = ji; jid = ji +1 |
---|
822 | ENDIF |
---|
823 | |
---|
824 | ! integrate the pressure on the shallow side |
---|
825 | jk1 = jk |
---|
826 | zbhitwe = 0 |
---|
827 | DO WHILE ( -zdeptht(jis,jj,jk1) > zuijk ) |
---|
828 | IF( jk1 == mbku(ji,jj) ) THEN |
---|
829 | zbhitwe = 1 |
---|
830 | EXIT |
---|
831 | ENDIF |
---|
832 | zdeps = MIN(zdeptht(jis,jj,jk1+1), -zuijk) |
---|
833 | zpwes = zpwes + & |
---|
834 | integ2(zdeptht(jis,jj,jk1), zdeps, & |
---|
835 | asp(jis,jj,jk1), bsp(jis,jj,jk1), & |
---|
836 | csp(jis,jj,jk1), dsp(jis,jj,jk1)) |
---|
837 | jk1 = jk1 + 1 |
---|
838 | END DO |
---|
839 | |
---|
840 | IF(zbhitwe == 1) THEN |
---|
841 | zuijk = -zdeptht(jis,jj,jk1) |
---|
842 | ENDIF |
---|
843 | |
---|
844 | ! integrate the pressure on the deep side |
---|
845 | jk1 = jk |
---|
846 | zbhitwe = 0 |
---|
847 | DO WHILE ( -zdeptht(jid,jj,jk1) < zuijk ) |
---|
848 | IF( jk1 == 1 ) THEN |
---|
849 | zbhitwe = 1 |
---|
850 | EXIT |
---|
851 | ENDIF |
---|
852 | zdeps = MAX(zdeptht(jid,jj,jk1-1), -zuijk) |
---|
853 | zpwed = zpwed + & |
---|
854 | integ2(zdeps, zdeptht(jid,jj,jk1), & |
---|
855 | asp(jid,jj,jk1-1), bsp(jid,jj,jk1-1), & |
---|
856 | csp(jid,jj,jk1-1), dsp(jid,jj,jk1-1) ) |
---|
857 | jk1 = jk1 - 1 |
---|
858 | END DO |
---|
859 | |
---|
860 | IF( zbhitwe == 1 ) THEN |
---|
861 | zdeps = zdeptht(jid,jj,1) + MIN(zuijk, sshn(jid,jj)*znad) |
---|
862 | zrhdt1 = zrhh(jid,jj,1) - interp3(zdeptht(jid,jj,1), asp(jid,jj,1), & |
---|
863 | bsp(jid,jj,1), csp(jid,jj,1), & |
---|
864 | dsp(jid,jj,1)) * zdeps |
---|
865 | zrhdt1 = MAX(zrhdt1, 1000._wp - rau0) ! no lighter than fresh water |
---|
866 | zpwed = zpwed + 0.5_wp * (zrhh(jid,jj,1) + zrhdt1) * zdeps |
---|
867 | ENDIF |
---|
868 | |
---|
869 | ! update the momentum trends in u direction |
---|
870 | |
---|
871 | zdpdx1 = zcoef0 / e1u(ji,jj) * (zhpi(ji+1,jj,jk) - zhpi(ji,jj,jk)) |
---|
872 | IF( lk_vvl ) THEN |
---|
873 | zdpdx2 = zcoef0 / e1u(ji,jj) * & |
---|
874 | ( REAL(jis-jid, wp) * (zpwes + zpwed) + (sshn(ji+1,jj)-sshn(ji,jj)) ) |
---|
875 | ELSE |
---|
876 | zdpdx2 = zcoef0 / e1u(ji,jj) * REAL(jis-jid, wp) * (zpwes + zpwed) |
---|
877 | ENDIF |
---|
878 | |
---|
879 | ua(ji,jj,jk) = ua(ji,jj,jk) + (zdpdx1 + zdpdx2) * & |
---|
880 | & umask(ji,jj,jk) * tmask(ji,jj,jk) * tmask(ji+1,jj,jk) |
---|
881 | ENDIF |
---|
882 | |
---|
883 | !!!!! for v equation |
---|
884 | IF( jk <= mbkv(ji,jj) ) THEN |
---|
885 | IF( -zdeptht(ji,jj+1,mbkv(ji,jj)) >= -zdeptht(ji,jj,mbkv(ji,jj)) ) THEN |
---|
886 | jjs = jj + 1; jjd = jj |
---|
887 | ELSE |
---|
888 | jjs = jj ; jjd = jj + 1 |
---|
889 | ENDIF |
---|
890 | |
---|
891 | ! integrate the pressure on the shallow side |
---|
892 | jk1 = jk |
---|
893 | zbhitns = 0 |
---|
894 | DO WHILE ( -zdeptht(ji,jjs,jk1) > zvijk ) |
---|
895 | IF( jk1 == mbkv(ji,jj) ) THEN |
---|
896 | zbhitns = 1 |
---|
897 | EXIT |
---|
898 | ENDIF |
---|
899 | zdeps = MIN(zdeptht(ji,jjs,jk1+1), -zvijk) |
---|
900 | zpnss = zpnss + & |
---|
901 | integ2(zdeptht(ji,jjs,jk1), zdeps, & |
---|
902 | asp(ji,jjs,jk1), bsp(ji,jjs,jk1), & |
---|
903 | csp(ji,jjs,jk1), dsp(ji,jjs,jk1) ) |
---|
904 | jk1 = jk1 + 1 |
---|
905 | END DO |
---|
906 | |
---|
907 | IF(zbhitns == 1) THEN |
---|
908 | zvijk = -zdeptht(ji,jjs,jk1) |
---|
909 | ENDIF |
---|
910 | |
---|
911 | ! integrate the pressure on the deep side |
---|
912 | jk1 = jk |
---|
913 | zbhitns = 0 |
---|
914 | DO WHILE ( -zdeptht(ji,jjd,jk1) < zvijk ) |
---|
915 | IF( jk1 == 1 ) THEN |
---|
916 | zbhitns = 1 |
---|
917 | EXIT |
---|
918 | ENDIF |
---|
919 | zdeps = MAX(zdeptht(ji,jjd,jk1-1), -zvijk) |
---|
920 | zpnsd = zpnsd + & |
---|
921 | integ2(zdeps, zdeptht(ji,jjd,jk1), & |
---|
922 | asp(ji,jjd,jk1-1), bsp(ji,jjd,jk1-1), & |
---|
923 | csp(ji,jjd,jk1-1), dsp(ji,jjd,jk1-1) ) |
---|
924 | jk1 = jk1 - 1 |
---|
925 | END DO |
---|
926 | |
---|
927 | IF( zbhitns == 1 ) THEN |
---|
928 | zdeps = zdeptht(ji,jjd,1) + MIN(zvijk, sshn(ji,jjd)*znad) |
---|
929 | zrhdt1 = zrhh(ji,jjd,1) - interp3(zdeptht(ji,jjd,1), asp(ji,jjd,1), & |
---|
930 | bsp(ji,jjd,1), csp(ji,jjd,1), & |
---|
931 | dsp(ji,jjd,1) ) * zdeps |
---|
932 | zrhdt1 = MAX(zrhdt1, 1000._wp - rau0) ! no lighter than fresh water |
---|
933 | zpnsd = zpnsd + 0.5_wp * (zrhh(ji,jjd,1) + zrhdt1) * zdeps |
---|
934 | ENDIF |
---|
935 | |
---|
936 | ! update the momentum trends in v direction |
---|
937 | |
---|
938 | zdpdy1 = zcoef0 / e2v(ji,jj) * (zhpi(ji,jj+1,jk) - zhpi(ji,jj,jk)) |
---|
939 | IF( lk_vvl ) THEN |
---|
940 | zdpdy2 = zcoef0 / e2v(ji,jj) * & |
---|
941 | ( REAL(jjs-jjd, wp) * (zpnss + zpnsd) + (sshn(ji,jj+1)-sshn(ji,jj)) ) |
---|
942 | ELSE |
---|
943 | zdpdy2 = zcoef0 / e2v(ji,jj) * REAL(jjs-jjd, wp) * (zpnss + zpnsd ) |
---|
944 | ENDIF |
---|
945 | |
---|
946 | va(ji,jj,jk) = va(ji,jj,jk) + (zdpdy1 + zdpdy2)*& |
---|
947 | & vmask(ji,jj,jk)*tmask(ji,jj,jk)*tmask(ji,jj+1,jk) |
---|
948 | ENDIF |
---|
949 | |
---|
950 | |
---|
951 | END DO |
---|
952 | END DO |
---|
953 | END DO |
---|
954 | ! |
---|
955 | CALL wrk_dealloc( jpi, jpj, jpk, zhpi, zu, zv, fsp, xsp, asp, bsp, csp, dsp ) |
---|
956 | ! |
---|
957 | END SUBROUTINE hpg_prj |
---|
958 | |
---|
959 | SUBROUTINE cspline(fsp, xsp, asp, bsp, csp, dsp, polynomial_type) |
---|
960 | !!---------------------------------------------------------------------- |
---|
961 | !! *** ROUTINE cspline *** |
---|
962 | !! |
---|
963 | !! ** Purpose : constrained cubic spline interpolation |
---|
964 | !! |
---|
965 | !! ** Method : f(x) = asp + bsp*x + csp*x^2 + dsp*x^3 |
---|
966 | !! Reference: K.W. Brodlie, A review of mehtods for curve and function |
---|
967 | !! drawing, 1980 |
---|
968 | !! |
---|
969 | !!---------------------------------------------------------------------- |
---|
970 | IMPLICIT NONE |
---|
971 | REAL(wp), DIMENSION(:,:,:), INTENT(in) :: fsp, xsp ! value and coordinate |
---|
972 | REAL(wp), DIMENSION(:,:,:), INTENT(out) :: asp, bsp, csp, dsp ! coefficients of |
---|
973 | ! the interpoated function |
---|
974 | INTEGER, INTENT(in) :: polynomial_type ! 1: cubic spline |
---|
975 | ! 2: Linear |
---|
976 | |
---|
977 | ! Local Variables |
---|
978 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
979 | INTEGER :: jpi, jpj, jpkm1 |
---|
980 | REAL(wp) :: zdf1, zdf2, zddf1, zddf2, ztmp1, ztmp2, zdxtmp |
---|
981 | REAL(wp) :: zdxtmp1, zdxtmp2, zalpha |
---|
982 | REAL(wp) :: zdf(size(fsp,3)) |
---|
983 | !!---------------------------------------------------------------------- |
---|
984 | |
---|
985 | jpi = size(fsp,1) |
---|
986 | jpj = size(fsp,2) |
---|
987 | jpkm1 = size(fsp,3) - 1 |
---|
988 | |
---|
989 | ! Clean output arrays |
---|
990 | asp = 0.0_wp |
---|
991 | bsp = 0.0_wp |
---|
992 | csp = 0.0_wp |
---|
993 | dsp = 0.0_wp |
---|
994 | |
---|
995 | DO ji = 1, jpi |
---|
996 | DO jj = 1, jpj |
---|
997 | IF (polynomial_type == 1) THEN ! Constrained Cubic Spline |
---|
998 | DO jk = 2, jpkm1-1 |
---|
999 | zdxtmp1 = xsp(ji,jj,jk) - xsp(ji,jj,jk-1) |
---|
1000 | zdxtmp2 = xsp(ji,jj,jk+1) - xsp(ji,jj,jk) |
---|
1001 | zdf1 = ( fsp(ji,jj,jk) - fsp(ji,jj,jk-1) ) / zdxtmp1 |
---|
1002 | zdf2 = ( fsp(ji,jj,jk+1) - fsp(ji,jj,jk) ) / zdxtmp2 |
---|
1003 | |
---|
1004 | zalpha = ( zdxtmp1 + 2._wp * zdxtmp2 ) / ( zdxtmp1 + zdxtmp2 ) / 3._wp |
---|
1005 | |
---|
1006 | IF(zdf1 * zdf2 <= 0._wp) THEN |
---|
1007 | zdf(jk) = 0._wp |
---|
1008 | ELSE |
---|
1009 | zdf(jk) = zdf1 * zdf2 / ( ( 1._wp - zalpha ) * zdf1 + zalpha * zdf2 ) |
---|
1010 | ENDIF |
---|
1011 | END DO |
---|
1012 | |
---|
1013 | zdf(1) = 1.5_wp * ( fsp(ji,jj,2) - fsp(ji,jj,1) ) / & |
---|
1014 | & ( xsp(ji,jj,2) - xsp(ji,jj,1) ) - 0.5_wp * zdf(2) |
---|
1015 | zdf(jpkm1) = 1.5_wp * ( fsp(ji,jj,jpkm1) - fsp(ji,jj,jpkm1-1) ) / & |
---|
1016 | & ( xsp(ji,jj,jpkm1) - xsp(ji,jj,jpkm1-1) ) - & |
---|
1017 | & 0.5_wp * zdf(jpkm1 - 1) |
---|
1018 | |
---|
1019 | DO jk = 1, jpkm1 - 1 |
---|
1020 | zdxtmp = xsp(ji,jj,jk+1) - xsp(ji,jj,jk) |
---|
1021 | ztmp1 = (zdf(jk+1) + 2._wp * zdf(jk)) / zdxtmp |
---|
1022 | ztmp2 = 6._wp * (fsp(ji,jj,jk+1) - fsp(ji,jj,jk)) / zdxtmp / zdxtmp |
---|
1023 | zddf1 = -2._wp * ztmp1 + ztmp2 |
---|
1024 | ztmp1 = (2._wp * zdf(jk+1) + zdf(jk)) / zdxtmp |
---|
1025 | zddf2 = 2._wp * ztmp1 - ztmp2 |
---|
1026 | |
---|
1027 | dsp(ji,jj,jk) = (zddf2 - zddf1) / 6._wp / zdxtmp |
---|
1028 | csp(ji,jj,jk) = ( xsp(ji,jj,jk+1) * zddf1 - xsp(ji,jj,jk)*zddf2 ) / 2._wp / zdxtmp |
---|
1029 | bsp(ji,jj,jk) = ( fsp(ji,jj,jk+1) - fsp(ji,jj,jk) ) / zdxtmp - & |
---|
1030 | & csp(ji,jj,jk) * ( xsp(ji,jj,jk+1) + xsp(ji,jj,jk) ) - & |
---|
1031 | & dsp(ji,jj,jk) * ( xsp(ji,jj,jk+1)**2 + & |
---|
1032 | & xsp(ji,jj,jk+1) * xsp(ji,jj,jk) + & |
---|
1033 | & xsp(ji,jj,jk)**2 ) |
---|
1034 | asp(ji,jj,jk) = fsp(ji,jj,jk) - bsp(ji,jj,jk) * xsp(ji,jj,jk) - & |
---|
1035 | & csp(ji,jj,jk) * xsp(ji,jj,jk)**2 - & |
---|
1036 | & dsp(ji,jj,jk) * xsp(ji,jj,jk)**3 |
---|
1037 | END DO |
---|
1038 | |
---|
1039 | ELSE IF (polynomial_type == 2) THEN ! Linear |
---|
1040 | |
---|
1041 | DO jk = 1, jpkm1-1 |
---|
1042 | zdxtmp =xsp(ji,jj,jk+1) - xsp(ji,jj,jk) |
---|
1043 | ztmp1 = fsp(ji,jj,jk+1) - fsp(ji,jj,jk) |
---|
1044 | |
---|
1045 | dsp(ji,jj,jk) = 0._wp |
---|
1046 | csp(ji,jj,jk) = 0._wp |
---|
1047 | bsp(ji,jj,jk) = ztmp1 / zdxtmp |
---|
1048 | asp(ji,jj,jk) = fsp(ji,jj,jk) - bsp(ji,jj,jk) * xsp(ji,jj,jk) |
---|
1049 | END DO |
---|
1050 | |
---|
1051 | ELSE |
---|
1052 | CALL ctl_stop( 'invalid polynomial type in cspline' ) |
---|
1053 | ENDIF |
---|
1054 | |
---|
1055 | END DO |
---|
1056 | END DO |
---|
1057 | |
---|
1058 | END SUBROUTINE cspline |
---|
1059 | |
---|
1060 | |
---|
1061 | FUNCTION interp1(x, xl, xr, fl, fr) RESULT(f) |
---|
1062 | !!---------------------------------------------------------------------- |
---|
1063 | !! *** ROUTINE interp1 *** |
---|
1064 | !! |
---|
1065 | !! ** Purpose : 1-d linear interpolation |
---|
1066 | !! |
---|
1067 | !! ** Method : |
---|
1068 | !! interpolation is straight forward |
---|
1069 | !! extrapolation is also permitted (no value limit) |
---|
1070 | !! |
---|
1071 | !! H.Liu, Jan 2009, POL |
---|
1072 | !!---------------------------------------------------------------------- |
---|
1073 | IMPLICIT NONE |
---|
1074 | REAL(wp), INTENT(in) :: x, xl, xr, fl, fr |
---|
1075 | REAL(wp) :: f ! result of the interpolation (extrapolation) |
---|
1076 | REAL(wp) :: zdeltx |
---|
1077 | !!---------------------------------------------------------------------- |
---|
1078 | |
---|
1079 | zdeltx = xr - xl |
---|
1080 | IF(abs(zdeltx) <= 10._wp * EPSILON(x)) THEN |
---|
1081 | f = 0.5_wp * (fl + fr) |
---|
1082 | ELSE |
---|
1083 | f = ( (x - xl ) * fr - ( x - xr ) * fl ) / zdeltx |
---|
1084 | ENDIF |
---|
1085 | |
---|
1086 | END FUNCTION interp1 |
---|
1087 | |
---|
1088 | FUNCTION interp2(x, a, b, c, d) RESULT(f) |
---|
1089 | !!---------------------------------------------------------------------- |
---|
1090 | !! *** ROUTINE interp1 *** |
---|
1091 | !! |
---|
1092 | !! ** Purpose : 1-d constrained cubic spline interpolation |
---|
1093 | !! |
---|
1094 | !! ** Method : cubic spline interpolation |
---|
1095 | !! |
---|
1096 | !!---------------------------------------------------------------------- |
---|
1097 | IMPLICIT NONE |
---|
1098 | REAL(wp), INTENT(in) :: x, a, b, c, d |
---|
1099 | REAL(wp) :: f ! value from the interpolation |
---|
1100 | !!---------------------------------------------------------------------- |
---|
1101 | |
---|
1102 | f = a + x* ( b + x * ( c + d * x ) ) |
---|
1103 | |
---|
1104 | END FUNCTION interp2 |
---|
1105 | |
---|
1106 | |
---|
1107 | FUNCTION interp3(x, a, b, c, d) RESULT(f) |
---|
1108 | !!---------------------------------------------------------------------- |
---|
1109 | !! *** ROUTINE interp1 *** |
---|
1110 | !! |
---|
1111 | !! ** Purpose : Calculate the first order of deriavtive of |
---|
1112 | !! a cubic spline function y=a+b*x+c*x^2+d*x^3 |
---|
1113 | !! |
---|
1114 | !! ** Method : f=dy/dx=b+2*c*x+3*d*x^2 |
---|
1115 | !! |
---|
1116 | !!---------------------------------------------------------------------- |
---|
1117 | IMPLICIT NONE |
---|
1118 | REAL(wp), INTENT(in) :: x, a, b, c, d |
---|
1119 | REAL(wp) :: f ! value from the interpolation |
---|
1120 | !!---------------------------------------------------------------------- |
---|
1121 | |
---|
1122 | f = b + x * ( 2._wp * c + 3._wp * d * x) |
---|
1123 | |
---|
1124 | END FUNCTION interp3 |
---|
1125 | |
---|
1126 | |
---|
1127 | FUNCTION integ2(xl, xr, a, b, c, d) RESULT(f) |
---|
1128 | !!---------------------------------------------------------------------- |
---|
1129 | !! *** ROUTINE interp1 *** |
---|
1130 | !! |
---|
1131 | !! ** Purpose : 1-d constrained cubic spline integration |
---|
1132 | !! |
---|
1133 | !! ** Method : integrate polynomial a+bx+cx^2+dx^3 from xl to xr |
---|
1134 | !! |
---|
1135 | !!---------------------------------------------------------------------- |
---|
1136 | IMPLICIT NONE |
---|
1137 | REAL(wp), INTENT(in) :: xl, xr, a, b, c, d |
---|
1138 | REAL(wp) :: za1, za2, za3 |
---|
1139 | REAL(wp) :: f ! integration result |
---|
1140 | !!---------------------------------------------------------------------- |
---|
1141 | |
---|
1142 | za1 = 0.5_wp * b |
---|
1143 | za2 = c / 3.0_wp |
---|
1144 | za3 = 0.25_wp * d |
---|
1145 | |
---|
1146 | f = xr * ( a + xr * ( za1 + xr * ( za2 + za3 * xr ) ) ) - & |
---|
1147 | & xl * ( a + xl * ( za1 + xl * ( za2 + za3 * xl ) ) ) |
---|
1148 | |
---|
1149 | END FUNCTION integ2 |
---|
1150 | |
---|
1151 | |
---|
1152 | !!====================================================================== |
---|
1153 | END MODULE dynhpg |
---|