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ldftra_c2d.h90 in tags/nemo_v3_2/nemo_v3_2/NEMO/OFF_SRC/LDF – NEMO

source: tags/nemo_v3_2/nemo_v3_2/NEMO/OFF_SRC/LDF/ldftra_c2d.h90 @ 1878

Last change on this file since 1878 was 1878, checked in by flavoni, 14 years ago

initial test for nemogcm

File size: 5.8 KB
Line 
1   !!----------------------------------------------------------------------
2   !!                      ***  ldftra_c2d.h90  ***
3   !!----------------------------------------------------------------------
4
5   !!----------------------------------------------------------------------
6   !!   OPA 9.0 , LOCEAN-IPSL  (2005)
7   !!   $Id: ldftra_c2d.h90 1152 2008-06-26 14:11:13Z rblod $
8   !!   This software is governed by the CeCILL licence see modipsl/doc/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      !!----------------------------------------------------------------------
29      !! * Arguments
30      LOGICAL, INTENT (in) :: ld_print   ! If true, print arrays in numout
31
32      !! * Local variables
33# if defined key_traldf_eiv && defined key_orca_r4
34      INTEGER ::   ji, jj                  ! dummy loop indices
35# endif
36# if defined key_orca_r4
37      INTEGER :: i1, i2, j1, j2
38# endif
39      REAL(wp) ::   za00, zdx_max
40     
41      !!----------------------------------------------------------------------
42
43      IF( lk_traldf_eiv ) THEN
44         IF(lwp) WRITE(numout,*)
45         IF(lwp) WRITE(numout,*) ' inildf : 2D eddy diffusivity and eddy'
46         IF(lwp) WRITE(numout,*) ' ~~~~~~   --  induced velocity coefficients'
47         IF(lwp) WRITE(numout,*)
48      ELSE
49         IF(lwp) WRITE(numout,*)
50         IF(lwp) WRITE(numout,*) ' inildf : 2D eddy diffusivity coefficient'
51         IF(lwp) WRITE(numout,*) ' ~~~~~~   --'
52         IF(lwp) WRITE(numout,*)
53      ENDIF
54
55      ! harmonic operator : (U-, V-, W-points)
56      ! ==================
57      IF( ln_traldf_lap ) THEN
58
59         ahtu(:,:) = aht0                ! set ahtu = ahtv at u- and v-points,
60         ahtv(:,:) = aht0                ! and ahtw at w-point (idem T-point)
61         ahtw(:,:) = aht0                !
62
63         CALL lbc_lnk( ahtu, 'U', 1. )   ! Lateral boundary conditions
64         CALL lbc_lnk( ahtv, 'V', 1. )   ! (no change of sign)
65         CALL lbc_lnk( ahtw, 'W', 1. )
66
67         ! Control print
68         IF( lwp .AND. ld_print ) THEN
69            WRITE(numout,*)
70            WRITE(numout,*) 'inildf: ahtu array'
71            CALL prihre( ahtu, jpi, jpj, 1, jpi, 1,   &
72               &                         1, jpj, 1, 1.e-3, numout )
73            WRITE(numout,*)
74            WRITE(numout,*) 'inildf: ahtv array'
75            CALL prihre( ahtv, jpi, jpj, 1, jpi, 1,   &
76               &                         1, jpj, 1, 1.e-3, numout )
77            WRITE(numout,*)
78            WRITE(numout,*) 'inildf: ahtw array'
79            CALL prihre( ahtw, jpi, jpj, 1, jpi, 1,   &
80               &                         1, jpj, 1, 1.e-3, numout )
81         ENDIF
82      ENDIF
83     
84      ! biharmonic operator : (T-point)
85      ! ====================
86      IF( ln_traldf_bilap ) THEN
87         ! (USER: modify ahtt following your desiderata)
88         ! Here: ahm is proportional to the cube of the maximum of the gridspacing
89         !       in the to horizontal direction
90
91         zdx_max = MAXVAL( e1t(:,:) )
92         IF( lk_mpp )   CALL mpp_max( zdx_max )   ! max over the global domain
93
94         za00 = aht0 / ( zdx_max * zdx_max * zdx_max )
95         ahtt(:,:) = za00 * e1t(:,:) * e1t(:,:) *e1t(:,:)      ! set ahtt at T-point
96
97         CALL lbc_lnk( ahtt, 'T', 1. )   ! Lateral boundary conditions on ( ahtt )
98
99         ! Control print
100         IF( lwp .AND. ld_print ) THEN
101            WRITE(numout,*)
102            WRITE(numout,*) 'inildf: 2D ahtt array'
103            CALL prihre( ahtt, jpi, jpj, 1, jpi, 1,   &
104               &                         1, jpj, 1, 1.e-3, numout )
105         ENDIF
106      ENDIF
107
108# if defined key_traldf_eiv
109      ! set aeiu = aeiv at u- and v-points, and aeiw at w-point (idem T-point)
110      ! (here no space variation)
111      aeiu(:,:) = aeiv0
112      aeiv(:,:) = aeiv0
113      aeiw(:,:) = aeiv0
114     
115      IF( cp_cfg == "orca" .AND. jp_cfg == 4 ) THEN
116         !                                 ! Cancel eiv in Gibraltar strait
117         aeiu( mi0(68):mi1(71) , mj0(50):mj1(53) ) = 0.e0
118         aeiv( mi0(68):mi1(71) , mj0(50):mj1(53) ) = 0.e0
119         aeiw( mi0(68):mi1(71) , mj0(50):mj1(53) ) = 0.e0
120         !                                 ! Cancel eiv in Mediterrannean sea
121         aeiu( mi0(70):mi1(90) , mj0(49):mj1(56) ) = 0.e0
122         aeiv( mi0(70):mi1(90) , mj0(49):mj1(56) ) = 0.e0
123         aeiw( mi0(70):mi1(90) , mj0(49):mj1(56) ) = 0.e0
124      ENDIF
125
126      ! Lateral boundary conditions on ( aeiu, aeiv, aeiw )
127      CALL lbc_lnk( aeiu, 'U', 1. )
128      CALL lbc_lnk( aeiv, 'V', 1. )
129      CALL lbc_lnk( aeiw, 'W', 1. )
130
131      ! Control print
132      IF( lwp .AND. ld_print ) THEN
133         WRITE(numout,*)
134         WRITE(numout,*) 'inildf: aeiu array'
135         CALL prihre(aeiu,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout)
136         WRITE(numout,*)
137         WRITE(numout,*) 'inildf: aeiv array'
138         CALL prihre(aeiv,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout)
139         WRITE(numout,*)
140         WRITE(numout,*) 'inildf: aeiw array'
141         CALL prihre(aeiw,jpi,jpj,1,jpi,1,1,jpj,1,1.e-3,numout)
142      ENDIF
143
144# endif
145
146   END SUBROUTINE ldf_tra_c2d
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