source: branches/2013/dev_LOCEAN_2013/NEMOGCM/NEMO/OPA_SRC/LDF/ldftra_c2d.h90 @ 4147

Last change on this file since 4147 was 4147, checked in by cetlod, 7 years ago

merge in dev_LOCEAN_2013, the 1st development branch dev_r3853_CNRS9_Confsetting, from its starting point ( r3853 ) on the trunk: see ticket #1169

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1   !!----------------------------------------------------------------------
2   !!                      ***  ldftra_c2d.h90  ***
3   !!----------------------------------------------------------------------
4
5   !!----------------------------------------------------------------------
6   !! NEMO/OPA 3.3 , NEMO Consortium (2010)
7   !! $Id$
8   !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
9   !!----------------------------------------------------------------------
10
11   SUBROUTINE ldf_tra_c2d( ld_print )
12      !!----------------------------------------------------------------------
13      !!                  ***  ROUTINE ldftra_c2d  ***
14      !!             
15      !! ** Purpose :   initializations of horizontally non uniform eddy
16      !!      diffusivity coefficients
17      !!
18      !! ** Method :
19      !!       biharmonic operator    : ahtt = defined at T-level
20      !!                                ahtu,ahtv,ahtw never used
21      !!       harmonic operator (ahtt never used)
22      !!           iso-model level   : ahtu, ahtv defined at u-, v-points
23      !!         isopycnal         : ahtu, ahtv, ahtw defined at u-, v-, w-pts
24      !!         or geopotential   
25      !!       eddy induced velocity
26      !!           always harmonic   : aeiu, aeiv, aeiw defined at u-, v-, w-pts
27      !!----------------------------------------------------------------------
28      LOGICAL, INTENT (in) ::   ld_print   ! If true, print arrays in numout
29      !
30      INTEGER ::   ji, jj   ! dummy loop indices
31      REAL(wp) ::   za00, zd_max, zeumax, zevmax, zetmax
32      !!----------------------------------------------------------------------
33
34      IF( lk_traldf_eiv ) THEN
35         IF(lwp) WRITE(numout,*)
36         IF(lwp) WRITE(numout,*) ' ldf_tra_c2d : 2D eddy diffusivity and eddy'
37         IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~   --  induced velocity coefficients'
38      ELSE
39         IF(lwp) WRITE(numout,*)
40         IF(lwp) WRITE(numout,*) ' ldf_tra2d : 2D eddy diffusivity coefficient'
41         IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~   --'
42      ENDIF
43
44      zd_max = MAX( MAXVAL( e1t(:,:) ), MAXVAL( e2t(:,:) ) )
45      IF( lk_mpp ) CALL mpp_max( zd_max )   ! max over the global domain
46
47      ! harmonic operator : (U-, V-, W-points)
48      ! ==================
49      IF( ln_traldf_lap ) THEN
50         !
51         za00 = aht0 / zd_max
52         !
53         DO jj = 1, jpj
54            DO ji = 1, jpi
55               zeumax = MAX( e1u(ji,jj), e2u(ji,jj) )
56               zevmax = MAX( e1v(ji,jj), e2v(ji,jj) )
57               zetmax = MAX( e1t(ji,jj), e2t(ji,jj) )
58               ahtu(ji,jj) = za00 * zeumax ! set ahtu = ahtv at u- and v-points,
59               ahtv(ji,jj) = za00 * zevmax ! and ahtw at w-point (idem T-point)
60               ahtw(ji,jj) = za00 * zetmax !
61            END DO
62         END DO
63
64         CALL lbc_lnk( ahtu, 'U', 1. )   ! Lateral boundary conditions
65         CALL lbc_lnk( ahtv, 'V', 1. )   ! (no change of sign)
66         CALL lbc_lnk( ahtw, 'W', 1. )
67
68         ! Special case for ORCA R2 and R4 configurations (overwrite the value of ahtu ahtv ahtw)
69         ! ==============================================
70         IF( cp_cfg == "orca" .AND. ( jp_cfg == 2 .OR. jp_cfg == 4 ) )   THEN
71            ahtu(:,:) = aht0              ! set ahtu = ahtv at u- and v-points,
72            ahtv(:,:) = aht0              ! and ahtw at w-point
73            ahtw(:,:) = aht0              ! (here : no space variation)
74            IF(lwp) WRITE(numout,*) '               ORCA R2 or R4 case'
75            IF(lwp) WRITE(numout,*) '               Constant values used for eddy diffusivity coefficients'
76            IF(lwp) WRITE(numout,*) '               Variation lat/lon only for eddy induced velocity coefficients'
77         ENDIF
78
79         ! Control print
80         IF( lwp .AND. ld_print ) THEN
81            WRITE(numout,*)
82            WRITE(numout,*) 'inildf: ahtu array'
83            CALL prihre( ahtu, jpi, jpj, 1, jpi, 1,   &
84               &                         1, jpj, 1, 1.e-3, numout )
85            WRITE(numout,*)
86            WRITE(numout,*) 'inildf: ahtv array'
87            CALL prihre( ahtv, jpi, jpj, 1, jpi, 1,   &
88               &                         1, jpj, 1, 1.e-3, numout )
89            WRITE(numout,*)
90            WRITE(numout,*) 'inildf: ahtw array'
91            CALL prihre( ahtw, jpi, jpj, 1, jpi, 1,   &
92               &                         1, jpj, 1, 1.e-3, numout )
93         ENDIF
94      ENDIF
95     
96      ! biharmonic operator : (T-point)
97      ! ====================
98      IF( ln_traldf_bilap ) THEN
99         ! (USER: modify ahtt following your desiderata)
100         ! Here: ahm is proportional to the cube of the maximum of the gridspacing
101         !       in the to horizontal direction
102
103         zd_max = MAX( MAXVAL( e1t(:,:) ), MAXVAL( e2t(:,:) ) )
104         IF( lk_mpp )   CALL mpp_max( zd_max )   ! max over the global domain
105
106         za00 = aht0 / ( zd_max * zd_max * zd_max )
107         DO jj = 1, jpj
108            DO ji = 1, jpi
109               zetmax = MAX( e1t(ji,jj), e2t(ji,jj) )
110               ahtt(ji,jj) = za00 * zetmax * zetmax * zetmax      ! set ahtt at T-point
111            END DO
112         END DO
113
114         CALL lbc_lnk( ahtt, 'T', 1. )   ! Lateral boundary conditions on ( ahtt )
115
116         ! Control print
117         IF( lwp .AND. ld_print ) THEN
118            WRITE(numout,*)
119            WRITE(numout,*) 'inildf: 2D ahtt array'
120            CALL prihre( ahtt, jpi, jpj, 1, jpi, 1,   &
121               &                         1, jpj, 1, 1.e-3, numout )
122         ENDIF
123      ENDIF
124
125# if defined key_traldf_eiv
126      ! set aeiu = aeiv at u- and v-points, and aeiw at w-point (idem T-point)
127      ! (here no space variation)
128      aeiu(:,:) = aeiv0
129      aeiv(:,:) = aeiv0
130      aeiw(:,:) = aeiv0
131     
132      IF( cp_cfg == "orca" .AND. jp_cfg == 4 ) THEN
133         !                                 ! Cancel eiv in Gibraltar strait
134         aeiu( mi0(68):mi1(71) , mj0(50):mj1(53) ) = 0.e0
135         aeiv( mi0(68):mi1(71) , mj0(50):mj1(53) ) = 0.e0
136         aeiw( mi0(68):mi1(71) , mj0(50):mj1(53) ) = 0.e0
137         !                                 ! Cancel eiv in Mediterrannean sea
138         aeiu( mi0(70):mi1(90) , mj0(49):mj1(56) ) = 0.e0
139         aeiv( mi0(70):mi1(90) , mj0(49):mj1(56) ) = 0.e0
140         aeiw( mi0(70):mi1(90) , mj0(49):mj1(56) ) = 0.e0
141      ENDIF
142
143      ! Lateral boundary conditions on ( aeiu, aeiv, aeiw )
144      CALL lbc_lnk( aeiu, 'U', 1. )
145      CALL lbc_lnk( aeiv, 'V', 1. )
146      CALL lbc_lnk( aeiw, 'W', 1. )
147
148      ! Control print
149      IF( lwp .AND. ld_print ) THEN
150         WRITE(numout,*)
151         WRITE(numout,*) 'inildf: aeiu array'
152         CALL prihre(aeiu,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout)
153         WRITE(numout,*)
154         WRITE(numout,*) 'inildf: aeiv array'
155         CALL prihre(aeiv,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout)
156         WRITE(numout,*)
157         WRITE(numout,*) 'inildf: aeiw array'
158         CALL prihre(aeiw,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout)
159      ENDIF
160# endif
161      !
162   END SUBROUTINE ldf_tra_c2d
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