1 | SUBROUTINE ice_phy_ini(kideb,kiut, nlay_s, nlay_i) |
---|
2 | |
---|
3 | ! BIO-LIM1D, 2008 (M. Vancoppenolle) |
---|
4 | ! update 2014, v3.04 |
---|
5 | |
---|
6 | ! This routine initializes ice variables |
---|
7 | |
---|
8 | !------------------------------------------------------------------------------! |
---|
9 | |
---|
10 | INCLUDE 'type.com' |
---|
11 | INCLUDE 'para.com' |
---|
12 | INCLUDE 'const.com' |
---|
13 | INCLUDE 'ice.com' |
---|
14 | INCLUDE 'thermo.com' |
---|
15 | INCLUDE 'bio.com' |
---|
16 | |
---|
17 | CHARACTER(len=10) :: |
---|
18 | & filenc='init.nc' |
---|
19 | |
---|
20 | REAL(4) zini(1) ! forcing field dummy array |
---|
21 | REAL(4) zzi(maxnlay), zti(maxnlay), zsi(maxnlay) ! forcing field dummy array |
---|
22 | REAL(4) zdsi(maxnlay), zno3(maxnlay), zpo4(maxnlay) |
---|
23 | REAL(4) zdaf(maxnlay) |
---|
24 | |
---|
25 | REAL(8), DIMENSION (maxnlay) :: |
---|
26 | & zsh_i0 , !: old ice salt content (ppt.m-2) |
---|
27 | & zsh_i1 !: new ice salt content (ppt.m-2) |
---|
28 | |
---|
29 | REAL(8), DIMENSION (maxnlay) :: |
---|
30 | & zqh_i0 , !: old ice heat content (J.m-2) |
---|
31 | & zqh_i1 !: new ice heat content (J.m-2) |
---|
32 | |
---|
33 | REAL(8), DIMENSION (maxnlay+2) :: |
---|
34 | & zthick0 !: thickness of old layers |
---|
35 | |
---|
36 | REAL(8), DIMENSION (6) :: |
---|
37 | & zp |
---|
38 | |
---|
39 | WRITE(numout,*) ' * ice_phy_ini : ' |
---|
40 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~' |
---|
41 | WRITE(numout,*) |
---|
42 | |
---|
43 | zeps = 1.0e-10 |
---|
44 | ji = 1 |
---|
45 | |
---|
46 | ! |
---|
47 | !------------------------------------------------------------------------------| |
---|
48 | ! 1) Case of a NETCDF file |
---|
49 | !------------------------------------------------------------------------------| |
---|
50 | ! |
---|
51 | !----------- |
---|
52 | ! Open file |
---|
53 | !----------- |
---|
54 | CALL CF_OPEN (filenc,id) ! open forcing file |
---|
55 | |
---|
56 | !----------- |
---|
57 | ! Read data |
---|
58 | !----------- |
---|
59 | zn = 0.0 |
---|
60 | CALL CF_READ1D ( filenc, 'nlay', 1, 1, zini ) |
---|
61 | zn = REAL(zini(1)) |
---|
62 | |
---|
63 | zj_d = 0.0 |
---|
64 | CALL CF_READ1D ( filenc, 'j_d', 1, 1, zini ) |
---|
65 | zj_d = REAL(zini(1)) |
---|
66 | |
---|
67 | CALL CF_READ1D ( filenc, 'h_s', 1, 1, zini) |
---|
68 | ht_s_b(ji) = REAL(zini(1)) |
---|
69 | |
---|
70 | |
---|
71 | CALL CF_READ1D ( filenc, 'h_i', 1, 1, zini) |
---|
72 | ht_i_b(ji) = REAL(zini(1)) |
---|
73 | |
---|
74 | CALL CF_READ1D ( filenc, 't_s', 1, 1, zini) |
---|
75 | t_s_b(ji,1) = REAL(zini(1)) |
---|
76 | |
---|
77 | CALL CF_READ1D ( filenc, 't_su', 1, 1, zini) |
---|
78 | t_su_b(ji) = REAL(zini(1)) |
---|
79 | |
---|
80 | DO layer = 1, INT(zn) |
---|
81 | CALL CF_READ1D ( filenc, 'z_i', layer, 1, zini) |
---|
82 | zzi(layer) = zini(1) |
---|
83 | CALL CF_READ1D ( filenc, 't_i', layer, 1, zini) |
---|
84 | zti(layer) = zini(1) |
---|
85 | CALL CF_READ1D ( filenc, 's_i', layer, 1, zini) |
---|
86 | zsi(layer) = zini(1) |
---|
87 | END DO |
---|
88 | |
---|
89 | CALL CF_CLOSE (filenc) ! close nc file |
---|
90 | |
---|
91 | IF ( c_sbr .EQ. 'LIN' ) THEN |
---|
92 | |
---|
93 | t_bo_b(ji) = 273.15-tmut*oce_sal |
---|
94 | |
---|
95 | ENDIF |
---|
96 | |
---|
97 | IF ( c_sbr .EQ. 'NTZ' ) THEN |
---|
98 | |
---|
99 | zp(1) = -0.0210; zp(2) = -0.0015 |
---|
100 | zp(3) = 2.3631d-05; zp(4) = -1.8129d-07 |
---|
101 | zp(5) = 5.8694d-10; zp(6) = -6.7021d-13 |
---|
102 | |
---|
103 | t_bo_b(ji) = 273.15 |
---|
104 | DO ii = 1, 6 |
---|
105 | t_bo_b(ji) = t_bo_b(ji) + zp(ii)*oce_sal**ii |
---|
106 | ENDDO |
---|
107 | |
---|
108 | ENDIF |
---|
109 | |
---|
110 | IF ( c_sbr .EQ. 'WEA' ) THEN |
---|
111 | |
---|
112 | zp(1) = -0.0571; zp(2) = -5.7866e-05 |
---|
113 | zp(3) = -3.0716e-07; zp(4) = 1.4240e-10 |
---|
114 | zp(5) = 2.1844e-12; zp(6) = -1.7638e-14 |
---|
115 | |
---|
116 | t_bo_b(ji) = 273.15 |
---|
117 | DO ii = 1, 6 |
---|
118 | t_bo_b(ji) = t_bo_b(ji) + zp(ii)*oce_sal**ii |
---|
119 | ENDDO |
---|
120 | |
---|
121 | ENDIF |
---|
122 | |
---|
123 | |
---|
124 | !---------------------- |
---|
125 | ! Interpolate profiles |
---|
126 | !---------------------- |
---|
127 | |
---|
128 | !------ |
---|
129 | ! Snow |
---|
130 | !------ |
---|
131 | CALL ice_phy_grid(1,1,nlay_s,ht_s_b(ji), .FALSE., "sno" ) ! compute the physical grid |
---|
132 | |
---|
133 | !----- |
---|
134 | ! Ice |
---|
135 | !----- |
---|
136 | CALL ice_phy_grid(1,1,nlay_i,ht_i_b(ji), .FALSE., "ice" ) ! compute the physical grid |
---|
137 | |
---|
138 | ! grid indexes for redistribution |
---|
139 | ntop0 = 1 |
---|
140 | nbot0 = INT(zn) |
---|
141 | ntop1 = 1 |
---|
142 | nbot1 = nlay_i |
---|
143 | |
---|
144 | !--- Salinity |
---|
145 | zm0(0) = 0.0 ! layer interfaces cotes |
---|
146 | DO layer = 1, nbot0-1 |
---|
147 | zm0(layer) = REAL( zzi(layer) + zzi(layer+1) ) / 2. |
---|
148 | END DO |
---|
149 | zm0(nbot0) = ht_i_b(ji) |
---|
150 | |
---|
151 | DO layer = 1, nbot0 !layer thickness and salt content |
---|
152 | zthick0(layer) = zm0(layer)-zm0(layer-1) |
---|
153 | zsh_i0(layer) = rhog*zthick0(layer)*REAL(zsi(layer)) !mass of salt |
---|
154 | END DO |
---|
155 | |
---|
156 | CALL ice_phy_relay( nbot0 , nbot1 , ntop0 , ntop1 , |
---|
157 | & zthick0, deltaz_i_phy, zsh_i0 , zsh_i1 ) |
---|
158 | |
---|
159 | DO layer = 1, nlay_i |
---|
160 | s_i_b(ji,layer) = zsh_i1(layer) / |
---|
161 | & (rhog*deltaz_i_phy(layer)) |
---|
162 | END DO |
---|
163 | |
---|
164 | DO layer = 1, nbot0 ! heat content |
---|
165 | ztmelts = - tmut * REAL(zsi(layer)) + tpw |
---|
166 | zq = rhog * ( cpg * ( ztmelts -REAL(zti(layer)) ) |
---|
167 | & + lfus*( 1.0 - (ztmelts-tpw) / |
---|
168 | & MIN( (REAL( zti(layer) ) -tpw),-zeps) ) |
---|
169 | & - cpw * ( ztmelts-tpw ) ) |
---|
170 | zqh_i0(layer) = zq * zthick0(layer) |
---|
171 | END DO |
---|
172 | CALL ice_phy_relay( nbot0 , nbot1 , ntop0 , ntop1 , |
---|
173 | & zthick0, deltaz_i_phy, zqh_i0 , zqh_i1 ) |
---|
174 | |
---|
175 | DO layer = 1, nlay_i |
---|
176 | zq = zqh_i1(layer) / MAX( deltaz_i_phy(layer) , zeps ) |
---|
177 | ztmelts = -tmut*s_i_b(ji,layer) + tpw |
---|
178 | aaa = cpg |
---|
179 | bbb = (cpw-cpg)*(ztmelts-tpw) + zq / rhog - lfus |
---|
180 | ccc = lfus * (ztmelts-tpw) |
---|
181 | discrim = SQRT( bbb*bbb - 4.0*aaa*ccc ) |
---|
182 | t_i_b(ji,layer) = tpw + (- bbb - discrim) / ( 2.0*aaa ) |
---|
183 | END DO |
---|
184 | |
---|
185 | ! |
---|
186 | !------------------------------------------------------------------------------| |
---|
187 | ! x) Write in output file |
---|
188 | !------------------------------------------------------------------------------| |
---|
189 | |
---|
190 | WRITE(numout,*) ' --- Initial values --- ' |
---|
191 | WRITE(numout,*) ' ' |
---|
192 | WRITE(numout,*) ' Surface temperature t_su : ', t_su_b(ji) |
---|
193 | WRITE(numout,*) ' Basal temperature t_bo : ', t_bo_b(ji) |
---|
194 | WRITE(numout,*) ' Snow temperature t_s : ', t_s_b(ji,1) |
---|
195 | WRITE(numout,*) ' Ice temperatures t_i : ', |
---|
196 | & ( t_i_b(ji,jk), jk = 1, nlay_i ) |
---|
197 | WRITE(numout,*) ' Ice salinities s_i : ', |
---|
198 | & ( s_i_b(ji,jk), jk = 1, nlay_i ) |
---|
199 | WRITE(numout,*) ' Ice thickness ht_i_b : ', ht_i_b(ji) |
---|
200 | WRITE(numout,*) ' Snow depth ht_s_b : ', ht_s_b(ji) |
---|
201 | WRITE(numout,*) ' ' |
---|
202 | |
---|
203 | !------------------------------------------------------------------------------| |
---|
204 | !- end of ice_phy_ini |
---|
205 | ! |
---|
206 | RETURN |
---|
207 | END |
---|