1 | MODULE tranpc |
---|
2 | !!============================================================================== |
---|
3 | !! *** MODULE tranpc *** |
---|
4 | !! Ocean active tracers: non penetrative convection scheme |
---|
5 | !!============================================================================== |
---|
6 | !! History : 1.0 ! 1990-09 (G. Madec) Original code |
---|
7 | !! ! 1996-01 (G. Madec) statement function for e3 |
---|
8 | !! NEMO 1.0 ! 2002-06 (G. Madec) free form F90 |
---|
9 | !! 3.0 ! 2008-06 (G. Madec) applied on ta, sa and called before tranxt in step.F90 |
---|
10 | !! 3.3 ! 2010-05 (C. Ethe, G. Madec) merge TRC-TRA |
---|
11 | !!---------------------------------------------------------------------- |
---|
12 | |
---|
13 | !!---------------------------------------------------------------------- |
---|
14 | !! tra_npc : apply the non penetrative convection scheme |
---|
15 | !!---------------------------------------------------------------------- |
---|
16 | USE oce ! ocean dynamics and active tracers |
---|
17 | USE dom_oce ! ocean space and time domain |
---|
18 | USE zdf_oce ! ocean vertical physics |
---|
19 | USE trdmod_oce ! ocean active tracer trends |
---|
20 | USE trdtra ! ocean active tracer trends |
---|
21 | USE eosbn2 ! equation of state (eos routine) |
---|
22 | USE lbclnk ! lateral boundary conditions (or mpp link) |
---|
23 | USE in_out_manager ! I/O manager |
---|
24 | USE lib_mpp ! MPP library |
---|
25 | |
---|
26 | IMPLICIT NONE |
---|
27 | PRIVATE |
---|
28 | |
---|
29 | PUBLIC tra_npc ! routine called by step.F90 |
---|
30 | |
---|
31 | !! * Substitutions |
---|
32 | # include "domzgr_substitute.h90" |
---|
33 | !!---------------------------------------------------------------------- |
---|
34 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
---|
35 | !! $Id$ |
---|
36 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
---|
37 | !!---------------------------------------------------------------------- |
---|
38 | CONTAINS |
---|
39 | |
---|
40 | SUBROUTINE tra_npc( kt ) |
---|
41 | !!---------------------------------------------------------------------- |
---|
42 | !! *** ROUTINE tranpc *** |
---|
43 | !! |
---|
44 | !! ** Purpose : Non penetrative convective adjustment scheme. solve |
---|
45 | !! the static instability of the water column on after fields |
---|
46 | !! while conserving heat and salt contents. |
---|
47 | !! |
---|
48 | !! ** Method : The algorithm used converges in a maximium of jpk |
---|
49 | !! iterations. instabilities are treated when the vertical density |
---|
50 | !! gradient is less than 1.e-5. |
---|
51 | !! l_trdtra=T: the trend associated with this algorithm is saved. |
---|
52 | !! |
---|
53 | !! ** Action : - (ta,sa) after the application od the npc scheme |
---|
54 | !! - save the associated trends (ttrd,strd) ('key_trdtra') |
---|
55 | !! |
---|
56 | !! References : Madec, et al., 1991, JPO, 21, 9, 1349-1371. |
---|
57 | !!---------------------------------------------------------------------- |
---|
58 | USE wrk_nemo, ONLY: wrk_in_use, wrk_not_released, wrk_in_use_xz, wrk_not_released_xz |
---|
59 | USE wrk_nemo, ONLY: ztrdt => wrk_3d_1 , ztrds => wrk_3d_2 , zrhop => wrk_3d_3 |
---|
60 | USE wrk_nemo, ONLY: zwx => wrk_xz_1 , zwy => wrk_xz_2 , zwz => wrk_xz_3 |
---|
61 | ! |
---|
62 | INTEGER, INTENT(in) :: kt ! ocean time-step index |
---|
63 | ! |
---|
64 | INTEGER :: ji, jj, jk ! dummy loop indices |
---|
65 | INTEGER :: inpcc ! number of statically instable water column |
---|
66 | INTEGER :: inpci ! number of iteration for npc scheme |
---|
67 | INTEGER :: jiter, jkdown, jkp ! ??? |
---|
68 | INTEGER :: ikbot, ik, ikup, ikdown ! ??? |
---|
69 | REAL(wp) :: ze3tot, zta, zsa, zraua, ze3dwn |
---|
70 | !!---------------------------------------------------------------------- |
---|
71 | |
---|
72 | ! Strictly 1 and 2 3D workspaces only needed if(l_trdtra) but it doesn't |
---|
73 | ! cost us anything and makes code simpler. |
---|
74 | IF( wrk_in_use(3, 1,2,3) .OR. wrk_in_use_xz(1,2,3) ) THEN |
---|
75 | CALL ctl_stop('tra_npc: requested workspace arrays unavailable') ; RETURN |
---|
76 | ENDIF |
---|
77 | |
---|
78 | IF( MOD( kt, nn_npc ) == 0 ) THEN |
---|
79 | |
---|
80 | inpcc = 0 |
---|
81 | inpci = 0 |
---|
82 | |
---|
83 | CALL eos( tsa, rhd, zrhop ) ! Potential density |
---|
84 | |
---|
85 | IF( l_trdtra ) THEN !* Save ta and sa trends |
---|
86 | ztrdt(:,:,:) = tsa(:,:,:,jp_tem) |
---|
87 | ztrds(:,:,:) = tsa(:,:,:,jp_sal) |
---|
88 | ENDIF |
---|
89 | |
---|
90 | ! ! =============== |
---|
91 | DO jj = 1, jpj ! Vertical slab |
---|
92 | ! ! =============== |
---|
93 | ! Static instability pointer |
---|
94 | ! ---------------------------- |
---|
95 | DO jk = 1, jpkm1 |
---|
96 | DO ji = 1, jpi |
---|
97 | zwx(ji,jk) = ( zrhop(ji,jj,jk) - zrhop(ji,jj,jk+1) ) * tmask(ji,jj,jk+1) |
---|
98 | END DO |
---|
99 | END DO |
---|
100 | |
---|
101 | ! 1.1 do not consider the boundary points |
---|
102 | |
---|
103 | ! even if east-west cyclic b. c. do not considere ji=1 or jpi |
---|
104 | DO jk = 1, jpkm1 |
---|
105 | zwx( 1 ,jk) = 0.e0 |
---|
106 | zwx(jpi,jk) = 0.e0 |
---|
107 | END DO |
---|
108 | ! even if south-symmetric b. c. used, do not considere jj=1 |
---|
109 | IF( jj == 1 ) zwx(:,:) = 0.e0 |
---|
110 | |
---|
111 | DO jk = 1, jpkm1 |
---|
112 | DO ji = 1, jpi |
---|
113 | zwx(ji,jk) = 1. |
---|
114 | IF( zwx(ji,jk) < 1.e-5 ) zwx(ji,jk) = 0.e0 |
---|
115 | END DO |
---|
116 | END DO |
---|
117 | |
---|
118 | zwy(:,1) = 0.e0 |
---|
119 | DO ji = 1, jpi |
---|
120 | DO jk = 1, jpkm1 |
---|
121 | zwy(ji,1) = zwy(ji,1) + zwx(ji,jk) |
---|
122 | END DO |
---|
123 | END DO |
---|
124 | |
---|
125 | zwz(1,1) = 0.e0 |
---|
126 | DO ji = 1, jpi |
---|
127 | zwz(1,1) = zwz(1,1) + zwy(ji,1) |
---|
128 | END DO |
---|
129 | |
---|
130 | inpcc = inpcc + NINT( zwz(1,1) ) |
---|
131 | |
---|
132 | |
---|
133 | ! 2. Vertical mixing for each instable portion of the density profil |
---|
134 | ! ------------------------------------------------------------------ |
---|
135 | |
---|
136 | IF( zwz(1,1) /= 0.e0 ) THEN ! -->> the density profil is statically instable : |
---|
137 | DO ji = 1, jpi |
---|
138 | IF( zwy(ji,1) /= 0.e0 ) THEN |
---|
139 | ! |
---|
140 | ikbot = mbkt(ji,jj) ! ikbot: ocean bottom T-level |
---|
141 | ! |
---|
142 | DO jiter = 1, jpk ! vertical iteration |
---|
143 | ! |
---|
144 | ! search of ikup : the first static instability from the sea surface |
---|
145 | ! |
---|
146 | ik = 0 |
---|
147 | 220 CONTINUE |
---|
148 | ik = ik + 1 |
---|
149 | IF( ik >= ikbot ) GO TO 200 |
---|
150 | zwx(ji,ik) = zrhop(ji,jj,ik) - zrhop(ji,jj,ik+1) |
---|
151 | IF( zwx(ji,ik) <= 0.e0 ) GO TO 220 |
---|
152 | ikup = ik |
---|
153 | ! the density profil is instable below ikup |
---|
154 | ! ikdown : bottom of the instable portion of the density profil |
---|
155 | ! search of ikdown and vertical mixing from ikup to ikdown |
---|
156 | ! |
---|
157 | ze3tot= fse3t(ji,jj,ikup) |
---|
158 | zta = tsa (ji,jj,ikup,jp_tem) |
---|
159 | zsa = tsa (ji,jj,ikup,jp_sal) |
---|
160 | zraua = zrhop(ji,jj,ikup) |
---|
161 | ! |
---|
162 | DO jkdown = ikup+1, ikbot-1 |
---|
163 | IF( zraua <= zrhop(ji,jj,jkdown) ) THEN |
---|
164 | ikdown = jkdown |
---|
165 | GO TO 240 |
---|
166 | ENDIF |
---|
167 | ze3dwn = fse3t(ji,jj,jkdown) |
---|
168 | ze3tot = ze3tot + ze3dwn |
---|
169 | zta = ( zta*(ze3tot-ze3dwn) + tsa(ji,jj,jkdown,jp_tem)*ze3dwn )/ze3tot |
---|
170 | zsa = ( zsa*(ze3tot-ze3dwn) + tsa(ji,jj,jkdown,jp_sal)*ze3dwn )/ze3tot |
---|
171 | zraua = ( zraua*(ze3tot-ze3dwn) + zrhop(ji,jj,jkdown)*ze3dwn )/ze3tot |
---|
172 | inpci = inpci+1 |
---|
173 | END DO |
---|
174 | ikdown = ikbot-1 |
---|
175 | 240 CONTINUE |
---|
176 | ! |
---|
177 | DO jkp = ikup, ikdown-1 |
---|
178 | tsa (ji,jj,jkp,jp_tem) = zta |
---|
179 | tsa (ji,jj,jkp,jp_sal) = zsa |
---|
180 | zrhop(ji,jj,jkp ) = zraua |
---|
181 | END DO |
---|
182 | IF (ikdown == ikbot-1 .AND. zraua >= zrhop(ji,jj,ikdown) ) THEN |
---|
183 | tsa (ji,jj,jkp,jp_tem) = zta |
---|
184 | tsa (ji,jj,jkp,jp_sal) = zsa |
---|
185 | zrhop(ji,jj,ikdown ) = zraua |
---|
186 | ENDIF |
---|
187 | END DO |
---|
188 | ENDIF |
---|
189 | 200 CONTINUE |
---|
190 | END DO |
---|
191 | ! <<-- no more static instability on slab jj |
---|
192 | ENDIF |
---|
193 | ! ! =============== |
---|
194 | END DO ! End of slab |
---|
195 | ! ! =============== |
---|
196 | ! |
---|
197 | IF( l_trdtra ) THEN ! save the Non penetrative mixing trends for diagnostic |
---|
198 | ztrdt(:,:,:) = tsa(:,:,:,jp_tem) - ztrdt(:,:,:) |
---|
199 | ztrds(:,:,:) = tsa(:,:,:,jp_sal) - ztrds(:,:,:) |
---|
200 | CALL trd_tra( kt, 'TRA', jp_tem, jptra_trd_npc, ztrdt ) |
---|
201 | CALL trd_tra( kt, 'TRA', jp_sal, jptra_trd_npc, ztrds ) |
---|
202 | ENDIF |
---|
203 | |
---|
204 | ! Lateral boundary conditions on ( ta, sa ) ( Unchanged sign) |
---|
205 | ! ------------------------------============ |
---|
206 | CALL lbc_lnk( tsa(:,:,:,jp_tem), 'T', 1. ) ; CALL lbc_lnk( tsa(:,:,:,jp_sal), 'T', 1. ) |
---|
207 | |
---|
208 | |
---|
209 | ! 2. non penetrative convective scheme statistics |
---|
210 | ! ----------------------------------------------- |
---|
211 | IF( nn_npcp /= 0 .AND. MOD( kt, nn_npcp ) == 0 ) THEN |
---|
212 | IF(lwp) WRITE(numout,*)' kt=',kt, ' number of statically instable', & |
---|
213 | & ' water column : ',inpcc, ' number of iteration : ',inpci |
---|
214 | ENDIF |
---|
215 | ! |
---|
216 | ENDIF |
---|
217 | ! |
---|
218 | IF( wrk_not_released(3, 1,2,3) .OR. & |
---|
219 | wrk_not_released_xz(1,2,3) ) CALL ctl_stop('tra_npc: failed to release workspace arrays') |
---|
220 | ! |
---|
221 | END SUBROUTINE tra_npc |
---|
222 | |
---|
223 | !!====================================================================== |
---|
224 | END MODULE tranpc |
---|