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ldftra_c1d.h90 in trunk/NEMO/OPA_SRC/LDF – NEMO

source: trunk/NEMO/OPA_SRC/LDF/ldftra_c1d.h90 @ 1629

Last change on this file since 1629 was 1152, checked in by rblod, 16 years ago

Convert cvs header to svn Id, step II
  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 5.0 KB
Line 
1   !!----------------------------------------------------------------------
2   !!                      ***  ldftra_c1d.h90  ***
3   !!----------------------------------------------------------------------
4
5   !!----------------------------------------------------------------------
6   !!   OPA 9.0 , LOCEAN-IPSL (2005)
7   !! $Id$
8   !! This software is governed by the CeCILL licence see modipsl/doc/NEMO_CeCILL.txt
9   !!----------------------------------------------------------------------
10
11   SUBROUTINE ldf_tra_c1d( ld_print )
12      !!----------------------------------------------------------------------
13      !!                  ***  ROUTINE ldftra_c1d  ***
14      !!             
15      !! ** Purpose :   1D eddy diffusivity coefficient
16      !!
17      !! ** Method  :   1D eddy diffusivity coefficients ( depth )
18      !!       biharmonic operator    : ahtt = defined at T-level
19      !!                                ahtu,ahtv,ahtw never used
20      !!
21      !!       harmonic operator      : ahtt never used
22      !!          -1-  iso-model level: ahtu = ahtv defined at T-level
23      !!                                ahtw never used
24      !!          -2-  isopycnal or   : ahtu = ahtv defined at T-level
25      !!               geopotential     ahtw defined at w-level
26      !!
27      !!       eddy induced velocity
28      !!         always harmonic      : aeiu = aeiv defined at T-level
29      !!            aeiw defined at w-level
30      !!
31      !!----------------------------------------------------------------------
32      !! * Arguments
33      LOGICAL, INTENT (in) :: ld_print   ! If true, print arrays in numout
34
35      !! * Local variables
36      INTEGER ::   jk                  ! dummy loop indices
37      REAL(wp) ::   &
38         zkah, zahr, za00 , za01,   &  ! temporary scalars
39         zahf, zahs, zahtf, zahts
40      !!----------------------------------------------------------------------
41
42      IF( lk_traldf_eiv ) THEN
43         IF(lwp) WRITE(numout,*)
44         IF(lwp) WRITE(numout,*) ' ldf_tra_c1d : 1D eddy diffusivity and eddy induced velocity coefficients'
45         IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~   -- '
46         IF(lwp) WRITE(numout,*)
47      ELSE
48         IF(lwp) WRITE(numout,*)
49         IF(lwp) WRITE(numout,*) ' inildf : 1D eddy diffusivity coefficient '
50         IF(lwp) WRITE(numout,*) ' ~~~~~~   -- '
51         IF(lwp) WRITE(numout,*)
52      ENDIF
53
54      ! initialization of the profile
55
56      ! ahts, ahtf: surface and bottom values
57      zahts = aht0
58      zahtf = aht0/4.
59      ! zkah, zahr: depth of the inflection pt and width of inflection
60      zkah =  -300.
61      zahr =   300.
62      ! computation coefficients
63      za00 = TANH( ( -fsdept(1,1,1  ) - zkah ) / zahr )
64      za01 = TANH( ( -fsdept(1,1,jpk) - zkah ) / zahr )
65      zahf = ( zahts-zahtf ) / ( za00 - za01 )
66      zahs = zahts - zahf * za00
67
68      ! biharmonic operator : (T-point)
69      ! ====================
70
71      ! set ahtt at T-level
72      DO jk = 1, jpk
73         ahtt(jk) = zahs + zahf * TANH( (-fsdept(1,1,jk)-zkah) / zahr )
74      END DO
75
76      ! control print
77      IF(lwp .AND. ld_print ) THEN
78         WRITE(numout,*)
79         WRITE(numout,*) '         aht profile at T-level : '
80         WRITE(numout,*)
81         WRITE(numout,*) ' level    aht          depth t-level '
82         DO jk = 1, jpk
83            WRITE(numout,'(i6,2f12.4)') jk, ahtt(jk), fsdept(1,1,jk)
84         END DO
85      ENDIF
86
87      ! harmonic operator : (U-, V-, W-points)
88      ! ==================
89
90      ! set ahtu = ahtv at T-level, and ahtw at w-level
91      DO jk = 1, jpk
92         ahtu(jk) = zahs + zahf * TANH( ( -fsdept(1,1,jk) - zkah ) / zahr )
93         ahtv(jk) = ahtu(jk)
94         ahtw(jk) = zahs + zahf * TANH( ( -fsdepw(1,1,jk) - zkah ) / zahr )
95      END DO
96
97      ! control print
98      IF(lwp .AND. ld_print ) THEN
99         IF(lwp) WRITE(numout,*)
100         IF(lwp) WRITE(numout,*) '         aht profile at T-level : '
101         IF(lwp) WRITE(numout,*)
102         IF(lwp) WRITE(numout,*) ' level    aht          depth t-level '
103         DO jk = 1, jpk
104            IF(lwp) WRITE(numout,"(i6,2f12.4)") jk, ahtu(jk), fsdept(1,1,jk)
105         END DO
106         IF(lwp) WRITE(numout,*)
107         IF(lwp) WRITE(numout,*) '         aht profile at W-level : '
108         IF(lwp) WRITE(numout,*)
109         IF(lwp) WRITE(numout,*) '  jk      aht          depth w-level '
110         DO jk = 1, jpk
111            IF(lwp)WRITE(numout,"(i6,2f12.4)") jk, ahtw(jk), fsdepw(1,1,jk)
112         END DO
113      ENDIF
114
115# if defined key_traldf_eiv
116      ! set aeiu = aeiv and set aeiw (here same profile as on aht)
117      aeiu(:) = ahtu(:)
118      aeiv(:) = aeiu(:)
119      aeiw(:) = ahtw(:)
120     
121      ! Control print
122      IF(lwp .AND. ld_print ) THEN
123         IF(lwp) WRITE(numout,*)
124         IF(lwp) WRITE(numout,*) '         aeiv profile at T-level : '
125         IF(lwp) WRITE(numout,*)
126         IF(lwp) WRITE(numout,*) '  jk      aeiv           depth t-level '
127         DO jk = 1, jpk
128            IF(lwp) WRITE(numout,"(i6,2f12.4)") jk, aeiu(jk), fsdept(1,1,jk)
129         END DO
130      ENDIF
131#endif
132
133   END SUBROUTINE ldf_tra_c1d
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