1 | MODULE p4zmicro |
---|
2 | !!====================================================================== |
---|
3 | !! *** MODULE p4zmicro *** |
---|
4 | !! TOP : PISCES Compute the sources/sinks for microzooplankton |
---|
5 | !!====================================================================== |
---|
6 | !! History : 1.0 ! 2004 (O. Aumont) Original code |
---|
7 | !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 |
---|
8 | !!---------------------------------------------------------------------- |
---|
9 | #if defined key_pisces |
---|
10 | !!---------------------------------------------------------------------- |
---|
11 | !! 'key_pisces' PISCES bio-model |
---|
12 | !!---------------------------------------------------------------------- |
---|
13 | !! p4z_micro : Compute the sources/sinks for microzooplankton |
---|
14 | !!---------------------------------------------------------------------- |
---|
15 | USE oce_trc ! |
---|
16 | USE trp_trc ! |
---|
17 | USE sms ! |
---|
18 | |
---|
19 | IMPLICIT NONE |
---|
20 | PRIVATE |
---|
21 | |
---|
22 | PUBLIC p4z_micro ! called in p4zbio.F90 |
---|
23 | |
---|
24 | !!* Substitution |
---|
25 | # include "domzgr_substitute.h90" |
---|
26 | !!---------------------------------------------------------------------- |
---|
27 | !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) |
---|
28 | !! $Header:$ |
---|
29 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
---|
30 | !!---------------------------------------------------------------------- |
---|
31 | |
---|
32 | CONTAINS |
---|
33 | |
---|
34 | SUBROUTINE p4z_micro |
---|
35 | !!--------------------------------------------------------------------- |
---|
36 | !! *** ROUTINE p4z_micro *** |
---|
37 | !! |
---|
38 | !! ** Purpose : Compute the sources/sinks for microzooplankton |
---|
39 | !! |
---|
40 | !! ** Method : - ??? |
---|
41 | !!--------------------------------------------------------------------- |
---|
42 | INTEGER :: ji, jj, jk |
---|
43 | REAL(wp) :: zcompadi, zcompadi2, zcompaz , zcompaph, zcompapoc |
---|
44 | REAL(wp) :: zgraze , zdenom , zdenom2 |
---|
45 | REAL(wp) :: zfact , zstep , zinano , zidiat, zipoc |
---|
46 | !!--------------------------------------------------------------------- |
---|
47 | |
---|
48 | zstep = rfact2 / rjjss ! Time step duration for biology |
---|
49 | |
---|
50 | DO jk = 1, jpkm1 |
---|
51 | DO jj = 1, jpj |
---|
52 | DO ji = 1, jpi |
---|
53 | |
---|
54 | zcompaz = MAX( ( trn(ji,jj,jk,jpzoo) - 1.e-9 ), 0.e0 ) |
---|
55 | # if defined key_off_degrad |
---|
56 | zfact = zstep * tgfunc(ji,jj,jk) * zcompaz *facvol(ji,jj,jk) |
---|
57 | # else |
---|
58 | zfact = zstep * tgfunc(ji,jj,jk) * zcompaz |
---|
59 | # endif |
---|
60 | |
---|
61 | ! Respiration rates of both zooplankton |
---|
62 | ! ------------------------------------- |
---|
63 | |
---|
64 | respz(ji,jj,jk) = resrat * zfact * ( 1.+ 3.* nitrfac(ji,jj,jk) ) & |
---|
65 | & * trn(ji,jj,jk,jpzoo) / ( xkmort + trn(ji,jj,jk,jpzoo) ) |
---|
66 | |
---|
67 | ! Zooplankton mortality. A square function has been selected with |
---|
68 | ! no real reason except that it seems to be more stable and may |
---|
69 | ! mimic predation. |
---|
70 | ! --------------------------------------------------------------- |
---|
71 | |
---|
72 | tortz(ji,jj,jk) = mzrat * 1.e6 * zfact * trn(ji,jj,jk,jpzoo) |
---|
73 | |
---|
74 | END DO |
---|
75 | END DO |
---|
76 | END DO |
---|
77 | |
---|
78 | DO jk = 1, jpkm1 |
---|
79 | DO jj = 1, jpj |
---|
80 | DO ji = 1, jpi |
---|
81 | |
---|
82 | zcompadi = MAX( ( trn(ji,jj,jk,jpdia) - 1.e-8 ), 0.e0 ) |
---|
83 | zcompadi2 = MIN( zcompadi, 5.e-7 ) |
---|
84 | zcompaph = MAX( ( trn(ji,jj,jk,jpphy) - 2.e-7 ), 0.e0 ) |
---|
85 | zcompapoc = MAX( ( trn(ji,jj,jk,jppoc) - 1.e-8 ), 0.e0 ) |
---|
86 | |
---|
87 | ! Microzooplankton grazing |
---|
88 | ! ------------------------ |
---|
89 | zdenom2 = 1./ ( zprefp * zcompaph + zprefc * zcompapoc + zprefd * zcompadi2 + rtrn ) |
---|
90 | |
---|
91 | zgraze = grazrat * zstep * tgfunc(ji,jj,jk) & |
---|
92 | # if defined key_off_degrad |
---|
93 | & * facvol(ji,jj,jk) & |
---|
94 | # endif |
---|
95 | & * trn(ji,jj,jk,jpzoo) |
---|
96 | |
---|
97 | zinano = zprefp * zcompaph * zdenom2 |
---|
98 | zipoc = zprefc * zcompapoc * zdenom2 |
---|
99 | zidiat = zprefd * zcompadi2 * zdenom2 |
---|
100 | |
---|
101 | zdenom = 1./ ( xkgraz + zinano * zcompaph + zipoc * zcompapoc + zidiat * zcompadi2 ) |
---|
102 | |
---|
103 | grazp (ji,jj,jk) = zgraze * zinano * zcompaph * zdenom |
---|
104 | grazm (ji,jj,jk) = zgraze * zipoc * zcompapoc * zdenom |
---|
105 | grazsd(ji,jj,jk) = zgraze * zidiat * zcompadi2 * zdenom |
---|
106 | |
---|
107 | grazpf (ji,jj,jk) = grazp (ji,jj,jk) * trn(ji,jj,jk,jpnfe) / (trn(ji,jj,jk,jpphy) + rtrn) |
---|
108 | |
---|
109 | grazpch(ji,jj,jk) = grazp (ji,jj,jk) * trn(ji,jj,jk,jpnch) / (trn(ji,jj,jk,jpphy) + rtrn) |
---|
110 | |
---|
111 | grazmf (ji,jj,jk) = grazm (ji,jj,jk) * trn(ji,jj,jk,jpsfe) / (trn(ji,jj,jk,jppoc) + rtrn) |
---|
112 | |
---|
113 | grazsf (ji,jj,jk) = grazsd(ji,jj,jk) * trn(ji,jj,jk,jpdfe) / (trn(ji,jj,jk,jpdia) + rtrn) |
---|
114 | |
---|
115 | grazss (ji,jj,jk) = grazsd(ji,jj,jk) * trn(ji,jj,jk,jpbsi) / (trn(ji,jj,jk,jpdia) + rtrn) |
---|
116 | |
---|
117 | grazsch(ji,jj,jk) = grazsd(ji,jj,jk) * trn(ji,jj,jk,jpdch) / (trn(ji,jj,jk,jpdia) + rtrn) |
---|
118 | |
---|
119 | END DO |
---|
120 | END DO |
---|
121 | END DO |
---|
122 | |
---|
123 | DO jk = 1, jpkm1 |
---|
124 | DO jj = 1, jpj |
---|
125 | DO ji = 1, jpi |
---|
126 | |
---|
127 | ! Various remineralization and excretion terms |
---|
128 | ! -------------------------------------------- |
---|
129 | |
---|
130 | grarem(ji,jj,jk) = ( grazp(ji,jj,jk) + grazm (ji,jj,jk) & |
---|
131 | & + grazsd(ji,jj,jk) ) * ( 1.- epsher - unass ) |
---|
132 | |
---|
133 | grafer(ji,jj,jk) = ( grazpf(ji,jj,jk) + grazsf(ji,jj,jk) & |
---|
134 | & + grazmf(ji,jj,jk) ) * ( 1.- epsher - unass ) & |
---|
135 | & + ( grazm (ji,jj,jk) * MAX( (trn(ji,jj,jk,jpsfe) / & |
---|
136 | & (trn(ji,jj,jk,jppoc) + rtrn) - ferat3), 0.e0 ) & |
---|
137 | & + grazp (ji,jj,jk) * MAX( (trn(ji,jj,jk,jpnfe) / & |
---|
138 | & (trn(ji,jj,jk,jpphy) + rtrn) - ferat3), 0.e0 ) & |
---|
139 | & + grazsd(ji,jj,jk) * MAX( (trn(ji,jj,jk,jpdfe) / & |
---|
140 | & (trn(ji,jj,jk,jpdia) + rtrn) - ferat3), 0.e0 ) ) * epsher |
---|
141 | |
---|
142 | grapoc(ji,jj,jk) = ( grazp(ji,jj,jk) + grazm(ji,jj,jk) + grazsd(ji,jj,jk) ) * unass |
---|
143 | |
---|
144 | END DO |
---|
145 | END DO |
---|
146 | END DO |
---|
147 | ! |
---|
148 | END SUBROUTINE p4z_micro |
---|
149 | |
---|
150 | #else |
---|
151 | !!====================================================================== |
---|
152 | !! Dummy module : No PISCES bio-model |
---|
153 | !!====================================================================== |
---|
154 | CONTAINS |
---|
155 | SUBROUTINE p4z_micro ! Empty routine |
---|
156 | END SUBROUTINE p4z_micro |
---|
157 | #endif |
---|
158 | |
---|
159 | !!====================================================================== |
---|
160 | END MODULE p4zmicro |
---|