/[MITgcm]/MITgcm_contrib/darwin2/pkg/monod/monod_generate_zoo.F
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Contents of /MITgcm_contrib/darwin2/pkg/monod/monod_generate_zoo.F

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Revision 1.1 - (show annotations) (download)
Wed Apr 13 18:56:25 2011 UTC (14 years, 4 months ago) by jahn
Branch: MAIN
CVS Tags: ctrb_darwin2_ckpt62v_20110413, ctrb_darwin2_ckpt62y_20110526, ctrb_darwin2_ckpt62x_20110513, ctrb_darwin2_ckpt62w_20110426, ctrb_darwin2_ckpt63c_20111011, ctrb_darwin2_ckpt63b_20110830, ctrb_darwin2_ckpt63a_20110804, ctrb_darwin2_ckpt63_20110728, ctrb_darwin2_baseline, ctrb_darwin2_ckpt62z_20110622
darwin2 initial checkin

1 #include "CPP_OPTIONS.h"
2 #include "PTRACERS_OPTIONS.h"
3 #include "DARWIN_OPTIONS.h"
4
5 #ifdef ALLOW_PTRACERS
6 #ifdef ALLOW_MONOD
7
8 c ==========================================================
9 c SUBROUTINE MONOD_GENERATE_ZOO
10 c generate parameters for zooplankton
11 c initial simple 2 species setup
12 c Stephanie Dutkiewicz Spring 2009
13 c ==========================================================
14 SUBROUTINE MONOD_GENERATE_ZOO(myThid)
15
16 implicit none
17 #include "EEPARAMS.h"
18 #include "MONOD_SIZE.h"
19 #include "DARWIN_PARAMS.h"
20 #include "MONOD.h"
21
22
23
24 C !INPUT PARAMETERS: ===================================================
25 C myThid :: thread number
26 INTEGER myThid
27
28 C === Functions ===
29 _RL DARWIN_RANDOM
30 EXTERNAL DARWIN_RANDOM
31 _RL DARWIN_RANDOM_NORMAL
32 EXTERNAL DARWIN_RANDOM_NORMAL
33
34 C !LOCAL VARIABLES:
35 C === Local variables ===
36 C msgBuf - Informational/error meesage buffer
37 CHARACTER*(MAX_LEN_MBUF) msgBuf
38
39 _RL dm
40 _RL volp
41 _RL PI
42 INTEGER np
43 INTEGER nz
44 INTEGER signvar
45 PARAMETER ( PI = 3.14159265358979323844D0 )
46
47 CEOP
48 c
49
50 #ifdef OLD_GRAZE
51 c for zooplankton
52 c assume zoo(1) = small, zoo(2) = big
53 c then grazing efficiency according to size
54 zoosize(1) = 0.0 _d 0
55 zoosize(2) = 1.0 _d 0
56 IF ( nzmax.GT.2 ) THEN
57 WRITE(msgBuf,'(2A,I5)') 'MONOD_GENERATE_ZOO: ',
58 & 'nzmax = ', nzmax
59 CALL PRINT_ERROR( msgBuf , 1)
60 WRITE(msgBuf,'(2A)') 'MONOD_GENERATE_ZOO: ',
61 & 'please provide size info for nz > 2'
62 CALL PRINT_ERROR( msgBuf , 1)
63 STOP 'ABNORMAL END: S/R MONOD_GENERATE_ZOO'
64 ENDIF
65
66 c grazing rates according to "allometry"
67 c big grazers preferentially eat big phyto etc...
68 do np=1,npmax
69 do nz=1,nzmax
70 if(zoosize(nz) .eq. physize(np))then
71 graze(np,nz) = GrazeFast
72 else
73 graze(np,nz) = GrazeSlow
74 end if
75 if (diacoc(np).eq.1) then
76 graze(np,nz)= graze(np,nz)*diatomgraz
77 endif
78 if (diacoc(np).eq.2) then
79 graze(np,nz)= graze(np,nz)*coccograz
80 endif
81 if (diacoc(np).eq.0.and.physize(np).eq.1) then
82 graze(np,nz)= graze(np,nz)*olargegraz
83 endif
84 end do
85 end do
86
87 c zooplankton export/mortality
88 c small zooplankton (zoosize = 0.) lower export fraction
89 do nz = 1, nzmax
90 if(zoosize(nz) .eq. 0.0)then
91 ExportFracZ(nz) = ZooexfacSmall
92 mortzoo(nz) = ZoomortSmall
93 else
94 ExportFracZ(nz) = ZooexfacBig
95 mortzoo(nz) = ZoomortBig
96 endif
97 end do
98 #endif
99
100
101 #ifndef OLD_GRAZE
102 c for zooplankton
103 c assume zoo(1) = small, zoo(2) = big
104 zoosize(1) = 0.0 _d 0
105 zoosize(2) = 1.0 _d 0
106 grazemax(1) = GrazeFast
107 grazemax(2) = GrazeFast
108 ExportFracZ(1)=ZooexfacSmall
109 ExportFracZ(2)=ZooexfacBig
110 mortzoo(1) = ZoomortSmall
111 mortzoo(2) = ZoomortBig
112 ExportFracGraz(1)=ExGrazFracbig
113 ExportFracGraz(2)=ExGrazFracsmall
114 IF ( nzmax.GT.2 ) THEN
115 WRITE(msgBuf,'(2A,I5)') 'MONOD_GENERATE_ZOO: ',
116 & 'nzmax = ', nzmax
117 CALL PRINT_ERROR( msgBuf , 1)
118 WRITE(msgBuf,'(2A)') 'MONOD_GENERATE_ZOO: ',
119 & 'please provide size info for nz > 2'
120 CALL PRINT_ERROR( msgBuf , 1)
121 STOP 'ABNORMAL END: S/R MONOD_GENERATE_ZOO'
122 ENDIF
123 c
124 do nz=1,nzmax
125 c size of phytoplankton
126 if(zoosize(nz).eq. 1.0 _d 0)then
127 dm = 300. _d 0 ! diameter (micrometer)
128 else
129 dm = 30. _d 0 ! diameter (micrometer)
130 end if
131 c phytoplankton volume in micrometers cubed
132 volp=4. _d 0/3. _d 0 *PI*(dm/2. _d 0)**3 _d 0
133 c
134 c common block variables (in m and m3)
135 zoo_esd(nz)=dm* 1. _d -6
136 zoo_vol(nz)=volp* 1. _d -18
137 c palatibity according to "allometry"
138 c big grazers preferentially eat big phyto etc...
139 do np=1,npmax
140 if (zoosize(nz).eq.physize(np)) then
141 palat(np,nz)=palathi
142 asseff(np,nz)=GrazeEffmod
143 else
144 palat(np,nz)=palatlo
145 if (physize(np).eq.0. _d 0) then
146 asseff(np,nz)=GrazeEffhi
147 else
148 asseff(np,nz)=GrazeEfflow
149 endif
150 endif
151 c diatoms even less palatible
152 if (diacoc(np).eq.1. _d 0) then
153 palat(np,nz)= palat(np,nz)*diatomgraz
154 endif
155 c coccolithophes less palatible
156 if (diacoc(np).eq.2. _d 0) then
157 palat(np,nz)= palat(np,nz)*coccograz
158 endif
159 c other large phyto less palatible
160 if (diacoc(np).eq.0. _d 0 .and.physize(np).eq.1. _d 0) then
161 palat(np,nz)= palat(np,nz)*olargegraz
162 endif
163 c need something in here for tricho
164 enddo
165 enddo
166 #endif
167
168 RETURN
169 END
170 #endif /*MONOD*/
171 #endif /*ALLOW_PTRACERS*/
172
173 c ===========================================================

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