1 |
C $Header: /u/gcmpack/MITgcm/verification/aim.5l_cs/code/aim_external_fields_load.F,v 1.2 2002/09/27 20:08:44 jmc Exp $ |
2 |
C $Name: $ |
3 |
|
4 |
#include "AIM_OPTIONS.h" |
5 |
|
6 |
CStartOfInterface |
7 |
SUBROUTINE AIM_EXTERNAL_FIELDS_LOAD( |
8 |
I myTime, myIter, myThid ) |
9 |
C /==========================================================\ |
10 |
C | SUBROUTINE AIM_EXTERNAL_FIELDS_LOAD | |
11 |
C | o Control reading of AIM fields from external source. | |
12 |
C |==========================================================| |
13 |
C | Loads bottom boundary condition datasets for AIM. | |
14 |
C | The routine is called every timetep and periodically | |
15 |
C | loads a set of external fields. | |
16 |
C | Monthly climatology files are read for | |
17 |
C | Albedo | |
18 |
C | Soil moisture | |
19 |
C | Land and sea surface temps. | |
20 |
C | Most of the work is done by the master the thread while | |
21 |
C | the other threads spin. | |
22 |
C \==========================================================/ |
23 |
IMPLICIT NONE |
24 |
|
25 |
C === Global variables === |
26 |
#include "SIZE.h" |
27 |
#include "EEPARAMS.h" |
28 |
#include "PARAMS.h" |
29 |
#include "GRID.h" |
30 |
#include "AIM_FFIELDS.h" |
31 |
|
32 |
C === Routine arguments === |
33 |
C myThid - Thread no. that called this routine. |
34 |
C myTime - Simulation time |
35 |
C myIter - Simulation timestep number |
36 |
INTEGER myThid |
37 |
_RL myTime |
38 |
INTEGER myIter |
39 |
CEndOfInterface |
40 |
|
41 |
C === Functions === |
42 |
LOGICAL DIFFERENT_MULTIPLE |
43 |
EXTERNAL DIFFERENT_MULTIPLE |
44 |
|
45 |
#ifdef ALLOW_AIM |
46 |
C === Local variables === |
47 |
C bi,bj, i,j - Loop counters |
48 |
C tYear - Fraction within year of myTime |
49 |
C mnthIndex - Current time in whole months |
50 |
C prevMnthIndex |
51 |
C fNam - Strings used in constructing file names |
52 |
C mnthNam |
53 |
C pfact - used to convert Pot.Temp. to in-situ Temp. |
54 |
INTEGER bi,bj, i, j |
55 |
_RL pfact |
56 |
_RL tYear |
57 |
INTEGER mnthIndex |
58 |
INTEGER prevMnthIndex |
59 |
DATA prevMnthIndex / 0 / |
60 |
SAVE prevMnthIndex |
61 |
CHARACTER*17 fNam |
62 |
CHARACTER*3 mnthNam(12) |
63 |
DATA mnthNam / |
64 |
& 'jan', 'feb', 'mar', 'apr', 'may', 'jun', |
65 |
& 'jul', 'aug', 'sep', 'oct', 'nov', 'dec' / |
66 |
SAVE mnthNam |
67 |
LOGICAL firstCall |
68 |
DATA FirstCall /.TRUE./ |
69 |
SAVE FirstCall |
70 |
|
71 |
C Prevent loading of new data before everyone has finished with it |
72 |
CALL BAR2(myThid) |
73 |
|
74 |
C Master thread coordinates loading of AIM datasets |
75 |
_BEGIN_MASTER( myThid ) |
76 |
|
77 |
C Calculate offset into a year |
78 |
tYear = myTime/(86400.*360.) - |
79 |
& FLOAT(INT(myTime/(86400.*360.))) |
80 |
mnthIndex = INT(tYear*12.)+1 |
81 |
IF ( mnthIndex .NE. prevMnthIndex .OR. |
82 |
& FirstCall ) THEN |
83 |
C New month so load in data |
84 |
prevMnthIndex = mnthIndex |
85 |
C o Albedo ( convert % to fraction ) |
86 |
WRITE(fNam,'(A,A,A)' ) 'salb.',mnthNam(mnthIndex),'.cs.bin' |
87 |
CALL MDSREADFIELD(fNam(1:15),readBinaryPrec,'RS',1, |
88 |
O aim_albedo, |
89 |
I 1,myThid) |
90 |
|
91 |
C o Surface temperature ( in kelvin ) |
92 |
WRITE(fNam,'(A,A,A)' ) 'stheta.',mnthNam(mnthIndex),'.cs.bin' |
93 |
c WRITE(fNam,'(A,A,A)' ) 'tsurf.',mnthNam(mnthIndex),'.cs.bin' |
94 |
CALL MDSREADFIELD(fNam(1:17),readBinaryPrec,'RS',1, |
95 |
O aim_surftemp, |
96 |
I 1,myThid) |
97 |
|
98 |
C o Soil moisture |
99 |
WRITE(fNam,'(A,A,A)' ) 'smoist.',mnthNam(mnthIndex),'.cs.bin' |
100 |
CALL MDSREADFIELD(fNam(1:17),readBinaryPrec,'RS',1, |
101 |
O aim_soilMoisture, |
102 |
I 1,myThid) |
103 |
|
104 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
105 |
|
106 |
C-- Converts fields for direct use in Atmos. Physics routine. |
107 |
C better here rather than in "aim_do_atmos" since: |
108 |
C a) change together conversion factor and input file name. |
109 |
C b) conversion applied only 1 time / month ; |
110 |
C c) easy to check here (variable in common). |
111 |
|
112 |
DO bj=1,nSy |
113 |
DO bi=1,nSx |
114 |
|
115 |
C- Converts surface albedo : input data is in % 0-100 |
116 |
C and Francos package needs a fraction between 0-1 |
117 |
DO j=1,sNy |
118 |
DO i=1,sNx |
119 |
aim_albedo(I,J,bi,bj) = aim_albedo(I,J,bi,bj)/100. |
120 |
ENDDO |
121 |
ENDDO |
122 |
|
123 |
C- Converts soil moisture (case input is in cm in bucket of depth 20cm.) |
124 |
c DO j=1,sNy |
125 |
c DO i=1,sNx |
126 |
c aim_soilMoisture(I,J,bi,bj) = aim_soilMoisture(I,J,bi,bj) |
127 |
c & /20. |
128 |
c ENDDO |
129 |
c ENDDO |
130 |
|
131 |
C- Converts surface potential temp. to in-situ temperature : |
132 |
DO j=1,sNy |
133 |
DO i=1,sNx |
134 |
pfact = (Ro_surf(i,j,bi,bj)/atm_po)**atm_kappa |
135 |
aim_surftemp(i,j,bi,bj) = aim_surftemp(i,j,bi,bj) |
136 |
& * pfact |
137 |
ENDDO |
138 |
ENDDO |
139 |
|
140 |
C-- end bi,bj loops |
141 |
ENDDO |
142 |
ENDDO |
143 |
|
144 |
IF (FirstCall) |
145 |
& CALL WRITE_FLD_XY_RL('aim_Tsurf',' ',aim_surftemp,0,myThid) |
146 |
|
147 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
148 |
|
149 |
ENDIF |
150 |
|
151 |
FirstCall = .FALSE. |
152 |
_END_MASTER( myThid ) |
153 |
|
154 |
C Stop anyone leaving until all data is read |
155 |
CALL BAR2(myThid) |
156 |
|
157 |
#endif /* ALLOW_AIM */ |
158 |
|
159 |
RETURN |
160 |
END |