1 | MODULE ldftra_smag |
---|
2 | !!====================================================================== |
---|
3 | !! *** MODULE ldftrasmag *** |
---|
4 | !! Ocean physics: variable eddy induced velocity coefficients |
---|
5 | !!====================================================================== |
---|
6 | #if defined key_traldf_smag && defined key_traldf_c3d |
---|
7 | !!---------------------------------------------------------------------- |
---|
8 | !! 'key_traldf_smag' and smagorinsky diffusivity |
---|
9 | !! 'key_traldf_c3d' 3D tracer lateral mixing coef. |
---|
10 | !!---------------------------------------------------------------------- |
---|
11 | !! ldf_eiv : compute the eddy induced velocity coefficients |
---|
12 | !!---------------------------------------------------------------------- |
---|
13 | !! * Modules used |
---|
14 | USE oce ! ocean dynamics and tracers |
---|
15 | USE dom_oce ! ocean space and time domain |
---|
16 | USE sbc_oce ! surface boundary condition: ocean |
---|
17 | USE sbcrnf ! river runoffs |
---|
18 | USE ldftra_oce ! ocean tracer lateral physics |
---|
19 | USE phycst ! physical constants |
---|
20 | USE ldfslp ! iso-neutral slopes |
---|
21 | USE in_out_manager ! I/O manager |
---|
22 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
---|
23 | USE prtctl ! Print control |
---|
24 | USE iom |
---|
25 | |
---|
26 | IMPLICIT NONE |
---|
27 | PRIVATE |
---|
28 | |
---|
29 | !! * Routine accessibility |
---|
30 | PUBLIC ldf_tra_smag ! routine called by step.F90 |
---|
31 | !!---------------------------------------------------------------------- |
---|
32 | !! OPA 9.0 , LOCEAN-IPSL (2005) |
---|
33 | !! $Id: ldf_tra_smag.F90 1482 2010-06-13 15:28:06Z $ |
---|
34 | !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt |
---|
35 | !!---------------------------------------------------------------------- |
---|
36 | !! * Substitutions |
---|
37 | # include "domzgr_substitute.h90" |
---|
38 | # include "vectopt_loop_substitute.h90" |
---|
39 | !!---------------------------------------------------------------------- |
---|
40 | |
---|
41 | CONTAINS |
---|
42 | |
---|
43 | |
---|
44 | |
---|
45 | |
---|
46 | |
---|
47 | !!---------------------------------------------------------------------- |
---|
48 | !! *** ldf_tra_smag.F90 *** |
---|
49 | !!---------------------------------------------------------------------- |
---|
50 | |
---|
51 | |
---|
52 | SUBROUTINE ldf_tra_smag( kt ) |
---|
53 | !!---------------------------------------------------------------------- |
---|
54 | !!---------------------------------------------------------------------- |
---|
55 | !! *** ROUTINE ldf_tra_smag *** |
---|
56 | !! |
---|
57 | !! ** Purpose : initializations of the horizontal ocean physics |
---|
58 | !! |
---|
59 | !! ** Method : 3D eddy viscosity coef. |
---|
60 | !! M.Griffies, R.Hallberg AMS, 2000 |
---|
61 | !! for laplacian: |
---|
62 | !! Asmag=(C/pi)^2*dx*dy sqrt(D^2), C=1 for tracers, C=3-4 for viscosity |
---|
63 | !! for bilaplacian: |
---|
64 | !! Bsmag=Asmag*dx*dy/8 |
---|
65 | !! D^2=(du/dx-dv/dy)^2+(dv/dx+du/dy)^2 for Cartesian coordinates |
---|
66 | !! in general case du/dx ==> e2 d(u/e2)/dx; du/dy ==> e1 d(u/e1)/dy; |
---|
67 | !! dv/dx ==> e2 d(v/e2)/dx; dv/dy ==> e1 d(v/e1)/dy |
---|
68 | !! |
---|
69 | !! laplacian operator : ahm1, ahm2 defined at T- and F-points |
---|
70 | !! ahm3, ahm4 never used |
---|
71 | !! bilaplacian operator : ahm1, ahm2 never used |
---|
72 | !! : ahm3, ahm4 defined at U- and V-points |
---|
73 | !! ??? explanation of the default is missing |
---|
74 | !! last modified : Maria Luneva, September 2011 |
---|
75 | !!---------------------------------------------------------------------- |
---|
76 | !! |
---|
77 | !!---------------------------------------------------------------------- |
---|
78 | !! * Modules used |
---|
79 | USE ioipsl |
---|
80 | INTEGER, INTENT( in ) :: kt ! ocean time-step inedx |
---|
81 | !! * Arguments |
---|
82 | INTEGER :: ji,jj,jk |
---|
83 | REAL (wp), DIMENSION (:,:), ALLOCATABLE:: ux,uy,vx,vy ! local velocity derivatives |
---|
84 | REAL (wp), DIMENSION (:,:), ALLOCATABLE:: ue1,ue2,ve1,ve2 ! local variables |
---|
85 | REAL (wp) :: deltaxy, deltau, deltav ! local step |
---|
86 | |
---|
87 | !!---------------------------------------------------------------------- |
---|
88 | IF( kt == nit000 ) THEN |
---|
89 | IF( lk_traldf_eiv ) THEN |
---|
90 | IF(lwp) WRITE(numout,*) |
---|
91 | IF(lwp) WRITE(numout,*) ' ldf_tra_smag : 3D eddy smagorinsky diffusivity and eddy induced velocity coefficients' |
---|
92 | IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~ -- ' |
---|
93 | IF(lwp) WRITE(numout,*) ' Coefficients are computed' |
---|
94 | IF(lwp) WRITE(numout,*) |
---|
95 | ELSE |
---|
96 | IF(lwp) WRITE(numout,*) |
---|
97 | IF(lwp) WRITE(numout,*) ' ldf_tra_smag : 3D eddy smagorinsky diffusivity coefficient' |
---|
98 | IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~ -- ' |
---|
99 | IF(lwp) WRITE(numout,*) ' Coefficients are computed' |
---|
100 | IF(lwp) WRITE(numout,*) |
---|
101 | ENDIF |
---|
102 | ENDIF |
---|
103 | |
---|
104 | ALLOCATE(ux(jpi,jpj)) ; ux(:,:)=0._wp |
---|
105 | ALLOCATE(uy(jpi,jpj)) ; uy(:,:)=0._wp |
---|
106 | ALLOCATE(vx(jpi,jpj)) ; vx(:,:)=0._wp |
---|
107 | ALLOCATE(vy(jpi,jpj)) ; vy(:,:)=0._wp |
---|
108 | ALLOCATE(ue1(jpi,jpj)); ALLOCATE(ue2(jpi,jpj)) |
---|
109 | ALLOCATE(ve1(jpi,jpj)); ALLOCATE(ve2(jpi,jpj)) |
---|
110 | |
---|
111 | ! biharmonic operator (T-point) |
---|
112 | ! ------------------- |
---|
113 | |
---|
114 | ahtt(:,:,:) = aht0 ! set ahtt at T-point (here no space variation) |
---|
115 | IF( ln_traldf_bilap ) THEN |
---|
116 | ! define ahm1 and ahm2 at the right grid point position |
---|
117 | ! (USER: modify ahm1 and ahm2 following your desiderata) |
---|
118 | DO jk=1,jpk |
---|
119 | ue2(:,:)=un(:,:,jk)/e2u(:,:) |
---|
120 | ve1(:,:)=vn(:,:,jk)/e1v(:,:) |
---|
121 | ue1(:,:)=un(:,:,jk)/e1u(:,:) |
---|
122 | ve2(:,:)=vn(:,:,jk)/e2v(:,:) |
---|
123 | |
---|
124 | |
---|
125 | DO jj=2,jpj |
---|
126 | DO ji=2,jpi |
---|
127 | ux(ji,jj)=(ue2(ji,jj)-ue2(ji-1,jj))/e1t(ji,jj)*e2t(ji,jj)*tmask(ji,jj,jk) |
---|
128 | vy(ji,jj)=(ve1(ji,jj)-ve1(ji,jj-1))/e2t(ji,jj)*e1t(ji,jj)*tmask(ji,jj,jk) |
---|
129 | ENDDO |
---|
130 | ENDDO |
---|
131 | |
---|
132 | DO jj=1,jpjm1 |
---|
133 | DO ji=1,jpim1 |
---|
134 | uy(ji,jj)=(ue1(ji,jj+1)-ue1(ji,jj))/e2f(ji,jj)*e1f(ji,jj)*fmask(ji,jj,jk) |
---|
135 | vx(ji,jj)=(ve2(ji+1,jj)-ve2(ji,jj))/e1f(ji,jj)*e2f(ji,jj)*fmask(ji,jj,jk) |
---|
136 | ENDDO |
---|
137 | ENDDO |
---|
138 | |
---|
139 | |
---|
140 | DO jj=2,jpjm1 |
---|
141 | DO ji=2,jpim1 |
---|
142 | deltaxy=2./(e1t(ji,jj)**(-2)+e2t(ji,jj)**(-2)) |
---|
143 | ahtt(ji,jj,jk)=(chsmag/3.14)**2/8*deltaxy**2* & |
---|
144 | sqrt( (ux(ji,jj)-vy(ji,jj))**2+ & |
---|
145 | 0.0625*(uy(ji,jj)+uy(ji,jj-1)+uy(ji-1,jj)+uy(ji-1,jj-1)+ & |
---|
146 | vx(ji,jj)+vx(ji,jj-1)+vx(ji-1,jj)+vx(ji-1,jj-1) )**2) |
---|
147 | |
---|
148 | !!! stabulity criteria: abs(aht)<delta**4/(4*8*dt) dt=2*rdt |
---|
149 | ahtt(ji,jj,jk)=MIN( ahtt(ji,jj,jk) , aht0 ) |
---|
150 | ahtt(ji,jj,jk)=MAX( ahtt(ji,jj,jk) ,- deltaxy**4/(8*16*rdt) ) |
---|
151 | ENDDO |
---|
152 | ENDDO |
---|
153 | ENDDO |
---|
154 | ahtt(:,:,jpk) = ahtt(:,:,jpkm1) |
---|
155 | |
---|
156 | CALL lbc_lnk( ahtt, 'T', 1. ) ! Lateral boundary conditions on ( ahtt ) |
---|
157 | IF( kt == nit000 ) THEN |
---|
158 | |
---|
159 | IF(lwp ) THEN ! Control print |
---|
160 | WRITE(numout,*) |
---|
161 | WRITE(numout,*) 'inildf: ahtt at k = 1' |
---|
162 | CALL prihre( ahtt(:,:,1), jpi, jpj, 1, jpi, 1, & |
---|
163 | & 1, jpj, 1, 1.e-1, numout ) |
---|
164 | |
---|
165 | ENDIF |
---|
166 | |
---|
167 | ENDIF |
---|
168 | ENDIF |
---|
169 | |
---|
170 | |
---|
171 | |
---|
172 | ! harmonic operator (U-, V-, W-points) |
---|
173 | ! ----------------- |
---|
174 | |
---|
175 | ahtu(:,:,:) = aht0 ! set ahtu = ahtv at u- and v-points, |
---|
176 | ahtv(:,:,:) = aht0 ! and ahtw at w-point |
---|
177 | ahtw(:,:,:) = aht0 ! (here example: no space variation) |
---|
178 | |
---|
179 | IF( ln_traldf_lap ) THEN |
---|
180 | DO jk=1,jpk |
---|
181 | ue2(:,:)=un(:,:,jk)/e2u(:,:) |
---|
182 | ve1(:,:)=vn(:,:,jk)/e1v(:,:) |
---|
183 | ue1(:,:)=un(:,:,jk)/e1u(:,:) |
---|
184 | ve2(:,:)=vn(:,:,jk)/e2v(:,:) |
---|
185 | |
---|
186 | |
---|
187 | DO jj=2,jpj |
---|
188 | DO ji=2,jpi |
---|
189 | ux(ji,jj)=(ue2(ji,jj)-ue2(ji-1,jj))/e1t(ji,jj)*e2t(ji,jj)*tmask(ji,jj,jk) |
---|
190 | vy(ji,jj)=(ve1(ji,jj)-ve1(ji,jj-1))/e2t(ji,jj)*e1t(ji,jj)*tmask(ji,jj,jk) |
---|
191 | ENDDO |
---|
192 | ENDDO |
---|
193 | |
---|
194 | DO jj=1,jpjm1 |
---|
195 | DO ji=1,jpim1 |
---|
196 | uy(ji,jj)=(ue1(ji,jj+1)-ue1(ji,jj))/e2f(ji,jj)*e1f(ji,jj)*fmask(ji,jj,jk) |
---|
197 | vx(ji,jj)=(ve2(ji+1,jj)-ve2(ji,jj))/e1f(ji,jj)*e2f(ji,jj)*fmask(ji,jj,jk) |
---|
198 | ENDDO |
---|
199 | ENDDO |
---|
200 | |
---|
201 | |
---|
202 | DO jj=2,jpjm1 |
---|
203 | DO ji=2,jpim1 |
---|
204 | deltau=2./(e1u(ji,jj)**(-2)+e2u(ji,jj)**(-2)) |
---|
205 | deltav=2./(e1v(ji,jj)**(-2)+e2v(ji,jj)**(-2)) |
---|
206 | |
---|
207 | ahtu(ji,jj,jk)=MAX(aht0 , (chsmag/3.14)**2*deltau* & |
---|
208 | sqrt(0.25*(ux(ji,jj)+ux(ji+1,jj)-vy(ji,jj)-vy(ji+1,jj))**2+ & |
---|
209 | 0.25*(uy(ji,jj)+uy(ji,jj-1)+vx(ji,jj)+vx(ji,jj-1))**2)) |
---|
210 | |
---|
211 | ahtv(ji,jj,jk)=MAX(aht0 , (chsmag/3.14)**2*deltav* & |
---|
212 | sqrt(0.25*(ux(ji,jj)+ux(ji,jj+1)-vy(ji,jj)-vy(ji,jj+1))**2+ & |
---|
213 | 0.25*(uy(ji,jj)+uy(ji-1,jj)+vx(ji-1,jj)+vx(ji,jj))**2)) |
---|
214 | |
---|
215 | |
---|
216 | !!! stabulity criteria: aht<delta**2/(4*dt) dt=2*rdt |
---|
217 | |
---|
218 | ahtu(ji,jj,jk)=MIN(ahtu(ji,jj,jk),deltau**2/(16*rdt) ) |
---|
219 | ahtv(ji,jj,jk)=MIN(ahtv(ji,jj,jk),deltav**2/(16*rdt) ) |
---|
220 | |
---|
221 | ENDDO |
---|
222 | ENDDO |
---|
223 | ENDDO |
---|
224 | ENDIF |
---|
225 | ahtu(:,:,jpk) = ahtu(:,:,jpkm1) |
---|
226 | ahtv(:,:,jpk) = ahtv(:,:,jpkm1) |
---|
227 | CALL lbc_lnk( ahtu, 'U', 1. ) ! Lateral boundary conditions |
---|
228 | CALL lbc_lnk( ahtv, 'V', 1. ) |
---|
229 | |
---|
230 | |
---|
231 | DEALLOCATE( ux ) ;DEALLOCATE( uy );DEALLOCATE( vx );DEALLOCATE( vy ) |
---|
232 | DEALLOCATE( ue1 ) ;DEALLOCATE( ue2 );DEALLOCATE( ve1 );DEALLOCATE( ve2 ) |
---|
233 | |
---|
234 | IF( kt == nit000 ) THEN |
---|
235 | |
---|
236 | IF(lwp ) THEN ! Control print |
---|
237 | WRITE(numout,*) |
---|
238 | WRITE(numout,*) 'inildf: ahtu at k = 1' |
---|
239 | CALL prihre( ahtu(:,:,1), jpi, jpj, 1, jpi, 1, & |
---|
240 | & 1, jpj, 1, 1.e-1, numout ) |
---|
241 | WRITE(numout,*) |
---|
242 | WRITE(numout,*) 'inildf: ahtv at k = 1' |
---|
243 | CALL prihre( ahtv(:,:,1), jpi, jpj, 1, jpi, 1, & |
---|
244 | & 1, jpj, 1, 1.e-1, numout ) |
---|
245 | WRITE(numout,*) |
---|
246 | WRITE(numout,*) 'inildf: ahtw at k = 1' |
---|
247 | CALL prihre( ahtw(:,:,1), jpi, jpj, 1, jpi, 1, & |
---|
248 | & 1, jpj, 1, 1.e-1, numout ) |
---|
249 | ENDIF |
---|
250 | ENDIF |
---|
251 | |
---|
252 | END SUBROUTINE ldf_tra_smag |
---|
253 | #else |
---|
254 | !!---------------------------------------------------------------------- |
---|
255 | !! Default option Dummy module |
---|
256 | !!---------------------------------------------------------------------- |
---|
257 | CONTAINS |
---|
258 | SUBROUTINE ldf_tra_smag( kt ) ! Empty routine |
---|
259 | WRITE(*,*) 'ldf_dyn_smag: You should not have seen this print! error? check keys ldf:c3d+smag', kt |
---|
260 | END SUBROUTINE ldf_tra_smag |
---|
261 | #endif |
---|
262 | |
---|
263 | END MODULE ldftra_smag |
---|