1 | MODULE usrdef_zgr |
---|
2 | !!====================================================================== |
---|
3 | !! *** MODULE usrdef_zgr *** |
---|
4 | !! |
---|
5 | !! === GYRE configuration === |
---|
6 | !! |
---|
7 | !! User defined : vertical coordinate system of a user configuration |
---|
8 | !!====================================================================== |
---|
9 | !! History : 4.0 ! 2016-06 (G. Madec) Original code |
---|
10 | !!---------------------------------------------------------------------- |
---|
11 | |
---|
12 | !!---------------------------------------------------------------------- |
---|
13 | !! usr_def_zgr : user defined vertical coordinate system |
---|
14 | !! zgr_z : reference 1D z-coordinate |
---|
15 | !! zgr_top_bot: ocean top and bottom level indices |
---|
16 | !! zgr_zco : 3D verticl coordinate in pure z-coordinate case |
---|
17 | !!--------------------------------------------------------------------- |
---|
18 | USE oce ! ocean variables |
---|
19 | USE dom_oce ! ocean domain |
---|
20 | USE depth_e3 ! depth <=> e3 |
---|
21 | ! |
---|
22 | USE in_out_manager ! I/O manager |
---|
23 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
---|
24 | USE lib_mpp ! distributed memory computing library |
---|
25 | |
---|
26 | IMPLICIT NONE |
---|
27 | PRIVATE |
---|
28 | |
---|
29 | PUBLIC usr_def_zgr ! called by domzgr.F90 |
---|
30 | |
---|
31 | !!---------------------------------------------------------------------- |
---|
32 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
---|
33 | !! $Id$ |
---|
34 | !! Software governed by the CeCILL license (see ./LICENSE) |
---|
35 | !!---------------------------------------------------------------------- |
---|
36 | CONTAINS |
---|
37 | |
---|
38 | SUBROUTINE usr_def_zgr( ld_zco , ld_zps , ld_sco , ld_isfcav, & ! type of vertical coordinate |
---|
39 | & pdept_1d, pdepw_1d, pe3t_1d , pe3w_1d , & ! 1D reference vertical coordinate |
---|
40 | & pdept , pdepw , & ! 3D t & w-points depth |
---|
41 | & pe3t , pe3u , pe3v , pe3f , & ! vertical scale factors |
---|
42 | & pe3w , pe3uw , pe3vw , & ! - - - |
---|
43 | & k_top , k_bot ) ! top & bottom ocean level |
---|
44 | !!--------------------------------------------------------------------- |
---|
45 | !! *** ROUTINE usr_def_zgr *** |
---|
46 | !! |
---|
47 | !! ** Purpose : User defined the vertical coordinates |
---|
48 | !! |
---|
49 | !!---------------------------------------------------------------------- |
---|
50 | LOGICAL , INTENT(out) :: ld_zco, ld_zps, ld_sco ! vertical coordinate flags |
---|
51 | LOGICAL , INTENT(out) :: ld_isfcav ! under iceshelf cavity flag |
---|
52 | REAL(wp), DIMENSION(:) , INTENT(out) :: pdept_1d, pdepw_1d ! 1D grid-point depth [m] |
---|
53 | REAL(wp), DIMENSION(:) , INTENT(out) :: pe3t_1d , pe3w_1d ! 1D grid-point depth [m] |
---|
54 | REAL(wp), DIMENSION(:,:,:), INTENT(out) :: pdept, pdepw ! grid-point depth [m] |
---|
55 | REAL(wp), DIMENSION(:,:,:), INTENT(out) :: pe3t , pe3u , pe3v , pe3f ! vertical scale factors [m] |
---|
56 | REAL(wp), DIMENSION(:,:,:), INTENT(out) :: pe3w , pe3uw, pe3vw ! i-scale factors |
---|
57 | INTEGER , DIMENSION(:,:) , INTENT(out) :: k_top, k_bot ! first & last ocean level |
---|
58 | ! |
---|
59 | INTEGER :: inum ! local logical unit |
---|
60 | REAL(WP) :: z_zco, z_zps, z_sco, z_cav |
---|
61 | REAL(wp), DIMENSION(jpi,jpj) :: z2d ! 2D workspace |
---|
62 | !!---------------------------------------------------------------------- |
---|
63 | ! |
---|
64 | IF(lwp) WRITE(numout,*) |
---|
65 | IF(lwp) WRITE(numout,*) 'usr_def_zgr : GYRE configuration (z-coordinate closed flat box ocean without cavities)' |
---|
66 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' |
---|
67 | ! |
---|
68 | ! |
---|
69 | ! type of vertical coordinate |
---|
70 | ! --------------------------- |
---|
71 | ld_zco = .TRUE. ! GYRE case: z-coordinate without ocean cavities |
---|
72 | ld_zps = .FALSE. |
---|
73 | ld_sco = .FALSE. |
---|
74 | ld_isfcav = .FALSE. |
---|
75 | ! |
---|
76 | ! |
---|
77 | ! Build the vertical coordinate system |
---|
78 | ! ------------------------------------ |
---|
79 | CALL zgr_z( pdept_1d, pdepw_1d, pe3t_1d , pe3w_1d ) ! Reference z-coordinate system |
---|
80 | ! |
---|
81 | CALL zgr_msk_top_bot( k_top , k_bot ) ! masked top and bottom ocean t-level indices |
---|
82 | ! |
---|
83 | ! ! z-coordinate (3D arrays) from the 1D z-coord. |
---|
84 | CALL zgr_zco( pdept_1d, pdepw_1d, pe3t_1d, pe3w_1d, & ! in : 1D reference vertical coordinate |
---|
85 | & pdept , pdepw , & ! out : 3D t & w-points depth |
---|
86 | & pe3t , pe3u , pe3v , pe3f , & ! vertical scale factors |
---|
87 | & pe3w , pe3uw , pe3vw ) ! - - - |
---|
88 | ! |
---|
89 | END SUBROUTINE usr_def_zgr |
---|
90 | |
---|
91 | |
---|
92 | SUBROUTINE zgr_z( pdept_1d, pdepw_1d, pe3t_1d , pe3w_1d ) ! 1D reference vertical coordinate |
---|
93 | !!---------------------------------------------------------------------- |
---|
94 | !! *** ROUTINE zgr_z *** |
---|
95 | !! |
---|
96 | !! ** Purpose : set the 1D depth of model levels and the resulting |
---|
97 | !! vertical scale factors. |
---|
98 | !! |
---|
99 | !! ** Method : 1D z-coordinate system (use in all type of coordinate) |
---|
100 | !! The depth of model levels is set from dep(k), an analytical function: |
---|
101 | !! w-level: depw_1d = dep(k) |
---|
102 | !! t-level: dept_1d = dep(k+0.5) |
---|
103 | !! The scale factors are the discrete derivative of the depth: |
---|
104 | !! e3w_1d(jk) = dk[ dept_1d ] |
---|
105 | !! e3t_1d(jk) = dk[ depw_1d ] |
---|
106 | !! with at top and bottom : |
---|
107 | !! e3w_1d( 1 ) = 2 * ( dept_1d( 1 ) - depw_1d( 1 ) ) |
---|
108 | !! e3t_1d(jpk) = 2 * ( dept_1d(jpk) - depw_1d(jpk) ) |
---|
109 | !! The depth are then re-computed from the sum of e3. This ensures |
---|
110 | !! that depths are identical when reading domain configuration file. |
---|
111 | !! Indeed, only e3. are saved in this file, depth are compute by a call |
---|
112 | !! to the e3_to_depth subroutine. |
---|
113 | !! |
---|
114 | !! Here the Madec & Imbard (1996) function is used. |
---|
115 | !! |
---|
116 | !! ** Action : - pdept_1d, pdepw_1d : depth of T- and W-point (m) |
---|
117 | !! - pe3t_1d , pe3w_1d : scale factors at T- and W-levels (m) |
---|
118 | !! |
---|
119 | !! Reference : Marti, Madec & Delecluse, 1992, JGR, 97, No8, 12,763-12,766. |
---|
120 | !! Madec and Imbard, 1996, Clim. Dyn. |
---|
121 | !!---------------------------------------------------------------------- |
---|
122 | REAL(wp), DIMENSION(:) , INTENT(out) :: pdept_1d, pdepw_1d ! 1D grid-point depth [m] |
---|
123 | REAL(wp), DIMENSION(:) , INTENT(out) :: pe3t_1d , pe3w_1d ! 1D vertical scale factors [m] |
---|
124 | ! |
---|
125 | INTEGER :: jk ! dummy loop indices |
---|
126 | REAL(wp) :: zt, zw ! local scalars |
---|
127 | REAL(wp) :: zsur, za0, za1, zkth, zacr ! Values for the Madec & Imbard (1996) function |
---|
128 | !!---------------------------------------------------------------------- |
---|
129 | ! |
---|
130 | ! Set parameters of z(k) function |
---|
131 | ! ------------------------------- |
---|
132 | zsur = -2033.194295283385_wp |
---|
133 | za0 = 155.8325369664153_wp |
---|
134 | za1 = 146.3615918601890_wp |
---|
135 | zkth = 17.28520372419791_wp |
---|
136 | zacr = 5.0_wp |
---|
137 | ! |
---|
138 | IF(lwp) THEN ! Parameter print |
---|
139 | WRITE(numout,*) |
---|
140 | WRITE(numout,*) ' zgr_z : Reference vertical z-coordinates ' |
---|
141 | WRITE(numout,*) ' ~~~~~~~' |
---|
142 | WRITE(numout,*) ' GYRE case : MI96 function with the following coefficients :' |
---|
143 | WRITE(numout,*) ' zsur = ', zsur |
---|
144 | WRITE(numout,*) ' za0 = ', za0 |
---|
145 | WRITE(numout,*) ' za1 = ', za1 |
---|
146 | WRITE(numout,*) ' zkth = ', zkth |
---|
147 | WRITE(numout,*) ' zacr = ', zacr |
---|
148 | ENDIF |
---|
149 | |
---|
150 | ! |
---|
151 | ! 1D Reference z-coordinate (using Madec & Imbard 1996 function) |
---|
152 | ! ------------------------- |
---|
153 | ! |
---|
154 | DO jk = 1, jpk ! depth at T and W-points |
---|
155 | zw = REAL( jk , wp ) |
---|
156 | zt = REAL( jk , wp ) + 0.5_wp |
---|
157 | pdepw_1d(jk) = ( zsur + za0 * zw + za1 * zacr * LOG( COSH( (zw-zkth) / zacr ) ) ) |
---|
158 | pdept_1d(jk) = ( zsur + za0 * zt + za1 * zacr * LOG( COSH( (zt-zkth) / zacr ) ) ) |
---|
159 | END DO |
---|
160 | ! |
---|
161 | ! ! e3t and e3w from depth |
---|
162 | CALL depth_to_e3( pdept_1d, pdepw_1d, pe3t_1d, pe3w_1d ) |
---|
163 | ! |
---|
164 | ! ! recompute depths from SUM(e3) <== needed |
---|
165 | CALL e3_to_depth( pe3t_1d, pe3w_1d, pdept_1d, pdepw_1d ) |
---|
166 | ! |
---|
167 | IF(lwp) THEN ! control print |
---|
168 | WRITE(numout,*) |
---|
169 | WRITE(numout,*) ' Reference 1D z-coordinate depth and scale factors:' |
---|
170 | WRITE(numout, "(9x,' level gdept_1d gdepw_1d e3t_1d e3w_1d ')" ) |
---|
171 | WRITE(numout, "(10x, i4, 4f9.2)" ) ( jk, pdept_1d(jk), pdepw_1d(jk), pe3t_1d(jk), pe3w_1d(jk), jk = 1, jpk ) |
---|
172 | ENDIF |
---|
173 | ! |
---|
174 | END SUBROUTINE zgr_z |
---|
175 | |
---|
176 | |
---|
177 | SUBROUTINE zgr_msk_top_bot( k_top , k_bot ) |
---|
178 | !!---------------------------------------------------------------------- |
---|
179 | !! *** ROUTINE zgr_msk_top_bot *** |
---|
180 | !! |
---|
181 | !! ** Purpose : set the masked top and bottom ocean t-levels |
---|
182 | !! |
---|
183 | !! ** Method : GYRE case = closed flat box ocean without ocean cavities |
---|
184 | !! k_top = 1 except along north, south, east and west boundaries |
---|
185 | !! k_bot = jpk-1 except along north, south, east and west boundaries |
---|
186 | !! |
---|
187 | !! ** Action : - k_top : first wet ocean level index |
---|
188 | !! - k_bot : last wet ocean level index |
---|
189 | !!---------------------------------------------------------------------- |
---|
190 | INTEGER , DIMENSION(:,:), INTENT(out) :: k_top , k_bot ! first & last wet ocean level |
---|
191 | ! |
---|
192 | REAL(wp), DIMENSION(jpi,jpj) :: z2d ! 2D local workspace |
---|
193 | !!---------------------------------------------------------------------- |
---|
194 | ! |
---|
195 | IF(lwp) WRITE(numout,*) |
---|
196 | IF(lwp) WRITE(numout,*) ' zgr_top_bot : defines the top and bottom wet ocean levels.' |
---|
197 | IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~' |
---|
198 | IF(lwp) WRITE(numout,*) ' GYRE case : closed flat box ocean without ocean cavities' |
---|
199 | ! |
---|
200 | z2d(:,:) = REAL( jpkm1 , wp ) ! flat bottom |
---|
201 | ! |
---|
202 | k_bot(:,:) = NINT( z2d(:,:) ) ! =jpkm1 over the ocean point, =0 elsewhere |
---|
203 | ! |
---|
204 | k_top(:,:) = MIN( 1 , k_bot(:,:) ) ! = 1 over the ocean point, =0 elsewhere |
---|
205 | ! |
---|
206 | END SUBROUTINE zgr_msk_top_bot |
---|
207 | |
---|
208 | |
---|
209 | SUBROUTINE zgr_zco( pdept_1d, pdepw_1d, pe3t_1d, pe3w_1d, & ! in : 1D reference vertical coordinate |
---|
210 | & pdept , pdepw , & ! out: 3D t & w-points depth |
---|
211 | & pe3t , pe3u , pe3v , pe3f , & ! vertical scale factors |
---|
212 | & pe3w , pe3uw , pe3vw ) ! - - - |
---|
213 | !!---------------------------------------------------------------------- |
---|
214 | !! *** ROUTINE zgr_zco *** |
---|
215 | !! |
---|
216 | !! ** Purpose : define the reference z-coordinate system |
---|
217 | !! |
---|
218 | !! ** Method : set 3D coord. arrays to reference 1D array |
---|
219 | !!---------------------------------------------------------------------- |
---|
220 | REAL(wp), DIMENSION(:) , INTENT(in ) :: pdept_1d, pdepw_1d ! 1D grid-point depth [m] |
---|
221 | REAL(wp), DIMENSION(:) , INTENT(in ) :: pe3t_1d , pe3w_1d ! 1D vertical scale factors [m] |
---|
222 | REAL(wp), DIMENSION(:,:,:), INTENT( out) :: pdept, pdepw ! grid-point depth [m] |
---|
223 | REAL(wp), DIMENSION(:,:,:), INTENT( out) :: pe3t , pe3u , pe3v , pe3f ! vertical scale factors [m] |
---|
224 | REAL(wp), DIMENSION(:,:,:), INTENT( out) :: pe3w , pe3uw, pe3vw ! - - - |
---|
225 | ! |
---|
226 | INTEGER :: jk |
---|
227 | !!---------------------------------------------------------------------- |
---|
228 | ! |
---|
229 | DO jk = 1, jpk |
---|
230 | pdept(:,:,jk) = pdept_1d(jk) |
---|
231 | pdepw(:,:,jk) = pdepw_1d(jk) |
---|
232 | pe3t (:,:,jk) = pe3t_1d (jk) |
---|
233 | pe3u (:,:,jk) = pe3t_1d (jk) |
---|
234 | pe3v (:,:,jk) = pe3t_1d (jk) |
---|
235 | pe3f (:,:,jk) = pe3t_1d (jk) |
---|
236 | pe3w (:,:,jk) = pe3w_1d (jk) |
---|
237 | pe3uw(:,:,jk) = pe3w_1d (jk) |
---|
238 | pe3vw(:,:,jk) = pe3w_1d (jk) |
---|
239 | END DO |
---|
240 | ! |
---|
241 | END SUBROUTINE zgr_zco |
---|
242 | |
---|
243 | !!====================================================================== |
---|
244 | END MODULE usrdef_zgr |
---|