1 | MODULE p4zday |
---|
2 | !!====================================================================== |
---|
3 | !! *** MODULE p4zday *** |
---|
4 | !! TOP : PISCES compute the day length depending on latitude and the day |
---|
5 | !!====================================================================== |
---|
6 | !! History : - ! 1993 (E. Maier-Reimer) Original code GBC 1993 |
---|
7 | !! - ! 1999 (C. Le Quere) |
---|
8 | !! 1.0 ! 2004 (O. Aumont) Original code |
---|
9 | !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 |
---|
10 | !!---------------------------------------------------------------------- |
---|
11 | #if defined key_pisces |
---|
12 | !!---------------------------------------------------------------------- |
---|
13 | !! 'key_pisces' PISCES bio-model |
---|
14 | !!---------------------------------------------------------------------- |
---|
15 | !! p4z_day : compute the day length depending on latitude and the day |
---|
16 | !!---------------------------------------------------------------------- |
---|
17 | USE oce_trc ! |
---|
18 | USE trp_trc ! |
---|
19 | USE sms ! |
---|
20 | |
---|
21 | IMPLICIT NONE |
---|
22 | PRIVATE |
---|
23 | |
---|
24 | PUBLIC p4z_day ! called in p4zprod.F90 |
---|
25 | |
---|
26 | !! * Shared module variables |
---|
27 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
---|
28 | strn !: Day length in hours |
---|
29 | |
---|
30 | !!* Substitution |
---|
31 | # include "domzgr_substitute.h90" |
---|
32 | !!---------------------------------------------------------------------- |
---|
33 | !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) |
---|
34 | !! $Header:$ |
---|
35 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
---|
36 | !!---------------------------------------------------------------------- |
---|
37 | |
---|
38 | CONTAINS |
---|
39 | |
---|
40 | SUBROUTINE p4z_day |
---|
41 | !!--------------------------------------------------------------------- |
---|
42 | !! *** ROUTINE p4z_day *** |
---|
43 | !! |
---|
44 | !! ** Purpose : compute the day length depending on latitude and the day |
---|
45 | !! |
---|
46 | !! ** Method : - ??? |
---|
47 | !!--------------------------------------------------------------------- |
---|
48 | INTEGER :: ji, jj |
---|
49 | INTEGER :: iyy |
---|
50 | REAL(wp) :: zrum, zdelta, zcodel, zphi, zargu |
---|
51 | !!--------------------------------------------------------------------- |
---|
52 | |
---|
53 | ! Get year |
---|
54 | ! -------- |
---|
55 | |
---|
56 | iyy = ndastp / 10000 |
---|
57 | |
---|
58 | IF(lwp) write(numout,*) |
---|
59 | IF(lwp) write(numout,*) 'p4zday : - Julian day ', nday_year |
---|
60 | IF(lwp) write(numout,*) '~~~~~~' |
---|
61 | |
---|
62 | |
---|
63 | IF( nleapy == 1 .AND. MOD( iyy, 4 ) == 0 ) THEN |
---|
64 | zrum = FLOAT( nday_year - 80 ) / 366. |
---|
65 | ELSE |
---|
66 | zrum = FLOAT( nday_year - 80 ) / 365. |
---|
67 | ENDIF |
---|
68 | |
---|
69 | zdelta = SIN( zrum * rpi * 2. ) * sin( rpi * 23.5 / 180. ) |
---|
70 | zcodel = ASIN( zdelta ) |
---|
71 | |
---|
72 | DO jj = 1, jpj |
---|
73 | DO ji = 1, jpi |
---|
74 | zphi = gphit(ji,jj) * rpi / 180. |
---|
75 | zargu = TAN( zcodel ) * TAN( zphi ) |
---|
76 | strn(ji,jj) = 0.e0 |
---|
77 | zargu = MIN( 1., zargu ) |
---|
78 | zargu = MAX( -1., zargu ) |
---|
79 | strn(ji,jj) = 24.- 2.* ACOS( zargu ) * 180./ rpi / 15. |
---|
80 | strn(ji,jj) = MAX( strn(ji,jj), 0.e0 ) |
---|
81 | END DO |
---|
82 | END DO |
---|
83 | ! |
---|
84 | END SUBROUTINE p4z_day |
---|
85 | |
---|
86 | #else |
---|
87 | !!====================================================================== |
---|
88 | !! Dummy module : No PISCES bio-model |
---|
89 | !!====================================================================== |
---|
90 | CONTAINS |
---|
91 | SUBROUTINE p4z_day ! Empty routine |
---|
92 | END SUBROUTINE p4z_day |
---|
93 | #endif |
---|
94 | |
---|
95 | !!====================================================================== |
---|
96 | END MODULE p4zday |
---|