| 1 | MODULE daymod |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE daymod *** |
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| 4 | !! Ocean : calendar |
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| 5 | !!===================================================================== |
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| 6 | !! History : OPA ! 1994-09 (M. Pontaud M. Imbard) Original code |
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| 7 | !! ! 1997-03 (O. Marti) |
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| 8 | !! ! 1997-05 (G. Madec) |
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| 9 | !! ! 1997-08 (M. Imbard) |
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| 10 | !! NEMO 1.0 ! 2003-09 (G. Madec) F90 + nyear, nmonth, nday |
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| 11 | !! ! 2004-01 (A.M. Treguier) new calculation based on adatrj |
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| 12 | !! ! 2006-08 (G. Madec) surface module major update |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | |
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| 15 | !!---------------------------------------------------------------------- |
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| 16 | !! day : calendar |
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| 17 | !! |
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| 18 | !! ------------------------------- |
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| 19 | !! ----------- WARNING ----------- |
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| 20 | !! |
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| 21 | !! we suppose that the time step is deviding the number of second of in a day |
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| 22 | !! ---> MOD( rday, rdttra(1) ) == 0 |
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| 23 | !! |
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| 24 | !! ----------- WARNING ----------- |
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| 25 | !! ------------------------------- |
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| 26 | !! |
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| 27 | !!---------------------------------------------------------------------- |
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| 28 | USE dom_oce ! ocean space and time domain |
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| 29 | USE phycst ! physical constants |
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| 30 | USE in_out_manager ! I/O manager |
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| 31 | USE iom ! |
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| 32 | USE ioipsl, ONLY : ymds2ju ! for calendar |
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| 33 | USE prtctl ! Print control |
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| 34 | USE restart ! |
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| 35 | |
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| 36 | IMPLICIT NONE |
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| 37 | PRIVATE |
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| 38 | |
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| 39 | PUBLIC day ! called by step.F90 |
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| 40 | PUBLIC day_init ! called by istate.F90 |
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| 41 | |
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| 42 | !!---------------------------------------------------------------------- |
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| 43 | !! NEMO/OPA 3.2 , LOCEAN-IPSL (2009) |
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| 44 | !! $Id$ |
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| 45 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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| 46 | !!---------------------------------------------------------------------- |
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| 47 | |
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| 48 | CONTAINS |
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| 49 | |
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| 50 | SUBROUTINE day_init |
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| 51 | !!---------------------------------------------------------------------- |
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| 52 | !! *** ROUTINE day_init *** |
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| 53 | !! |
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| 54 | !! ** Purpose : Initialization of the calendar values to their values 1 time step before nit000 |
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| 55 | !! because day will be called at the beginning of step |
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| 56 | !! |
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| 57 | !! ** Action : - nyear : current year |
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| 58 | !! - nmonth : current month of the year nyear |
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| 59 | !! - nday : current day of the month nmonth |
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| 60 | !! - nday_year : current day of the year nyear |
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| 61 | !! - rsec_year : current time step counted in second since 00h jan 1st of the current year |
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| 62 | !! - rsec_month : current time step counted in second since 00h 1st day of the current month |
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| 63 | !! - rsec_day : current time step counted in second since 00h of the current day |
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| 64 | !! - sec1jan000 : second since Jan. 1st 00h of nit000 year and Jan. 1st 00h of the current year |
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| 65 | !! - nmonth_len, nyear_len, rmonth_half, rmonth_end through day_mth |
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| 66 | !!---------------------------------------------------------------------- |
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| 67 | |
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| 68 | ! all calendar staff is based on the fact that MOD( rday, rdttra(1) ) == 0 |
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| 69 | IF( MOD( rday, rdttra(1) ) /= 0 ) CALL ctl_stop( 'the time step must devide the number of second of in a day' ) |
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| 70 | |
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| 71 | CALL day_rst( nit000, 'READ' ) |
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| 72 | |
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| 73 | ! set the calandar from ndastp (read in restart file and namelist) |
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| 74 | |
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| 75 | nyear = ndastp / 10000 |
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| 76 | nmonth = ( ndastp - (nyear * 10000) ) / 100 |
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| 77 | nday = ndastp - (nyear * 10000) - ( nmonth * 100 ) |
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| 78 | |
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| 79 | CALL ymds2ju( nyear, nmonth, nday, 0.0, fjulday ) ! we assume that we start run at 00:00 |
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| 80 | fjulday = fjulday + 1. ! move back to the day at nit000 (and not at nit000 - 1) |
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| 81 | |
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| 82 | sec1jan000 = 0.e0 |
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| 83 | CALL day_mth |
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| 84 | |
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| 85 | IF ( nday == 0 ) THEN ! for ex if ndastp = ndate0 - 1 |
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| 86 | nmonth = nmonth - 1 |
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| 87 | nday = nmonth_len(nmonth) |
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| 88 | ENDIF |
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| 89 | IF ( nmonth == 0 ) THEN ! go at the end of previous year |
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| 90 | nmonth = 12 |
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| 91 | nyear = nyear - 1 |
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| 92 | sec1jan000 = sec1jan000 - rday * REAL( nyear_len(0), wp ) |
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| 93 | IF( nleapy == 1 ) CALL day_mth |
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| 94 | ENDIF |
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| 95 | |
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| 96 | ! day since january 1st |
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| 97 | nday_year = nday + SUM( nmonth_len(1:nmonth - 1) ) |
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| 98 | |
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| 99 | ! number of seconds since the beginning of current year/month at the middle of the time-step |
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| 100 | rsec_year = REAL( nday_year, wp ) * rday - 0.5 * rdttra(1) ! 1 time step before the middle of the first time step |
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| 101 | rsec_month = REAL( nday , wp ) * rday - 0.5 * rdttra(1) ! because day will be called at the beginning of step |
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| 102 | rsec_day = rday - 0.5 * rdttra(1) |
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| 103 | |
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| 104 | ! control print |
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| 105 | IF(lwp) WRITE(numout,*)' ==============>> 1/2 time step before the start of the run DATE Y/M/D = ', & |
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| 106 | & nyear, '/', nmonth, '/', nday, ' rsec_day:', rsec_day |
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| 107 | |
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| 108 | END SUBROUTINE day_init |
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| 109 | |
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| 110 | |
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| 111 | SUBROUTINE day_mth |
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| 112 | !!---------------------------------------------------------------------- |
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| 113 | !! *** ROUTINE day_init *** |
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| 114 | !! |
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| 115 | !! ** Purpose : calendar values related to the months |
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| 116 | !! |
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| 117 | !! ** Action : - nmonth_len : length in days of the months of the current year |
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| 118 | !! - nyear_len : length in days of the previous/current year |
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| 119 | !! - rmonth_half : second since the beginning of the year and the halft of the months |
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| 120 | !! - rmonth_end : second since the beginning of the year and the end of the months |
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| 121 | !!---------------------------------------------------------------------- |
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| 122 | INTEGER :: jm ! dummy loop indice |
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| 123 | !!---------------------------------------------------------------------- |
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| 124 | |
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| 125 | ! length of the month of the current year (from nleapy, read in namelist) |
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| 126 | IF ( nleapy < 2 ) THEN |
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| 127 | nmonth_len(:) = (/ 31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 31 /) |
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| 128 | nyear_len(:) = 365 |
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| 129 | IF ( nleapy == 1 ) THEN ! we are using calandar with leap years |
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| 130 | IF ( MOD(nyear-1, 4) == 0 .AND. ( MOD(nyear-1, 400) == 0 .OR. MOD(nyear-1, 100) /= 0 ) ) THEN |
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| 131 | nyear_len(0) = 366 |
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| 132 | ENDIF |
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| 133 | IF ( MOD(nyear, 4) == 0 .AND. ( MOD(nyear, 400) == 0 .OR. MOD(nyear, 100) /= 0 ) ) THEN |
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| 134 | nmonth_len(2) = 29 |
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| 135 | nyear_len(1) = 366 |
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| 136 | ENDIF |
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| 137 | ENDIF |
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| 138 | ELSE |
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| 139 | nmonth_len(:) = nleapy ! all months with nleapy days per year |
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| 140 | nyear_len(:) = 12 * nleapy |
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| 141 | ENDIF |
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| 142 | |
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| 143 | ! half month in second since the begining of the year: |
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| 144 | ! time since Jan 1st 0 1 2 ... 11 12 13 |
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| 145 | ! ---------*--|--*--|--*--| ... |--*--|--*--|--*--|-------------------------------------- |
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| 146 | ! <---> <---> <---> ... <---> <---> <---> |
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| 147 | ! month number 0 1 2 ... 11 12 13 |
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| 148 | ! |
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| 149 | ! rmonth_half(jm) = rday * REAL( 0.5 * nmonth_len(jm) + SUM(nmonth_len(1:jm-1)) ) |
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| 150 | rmonth_half(0) = - 0.5 * rday * REAL( nmonth_len(0), wp ) |
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| 151 | DO jm = 1, 13 |
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| 152 | rmonth_half(jm) = rmonth_half(jm-1) + 0.5 * rday * REAL( nmonth_len(jm-1) + nmonth_len(jm), wp ) |
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| 153 | END DO |
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| 154 | |
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| 155 | rmonth_end(0) = 0. |
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| 156 | DO jm = 1, 13 |
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| 157 | rmonth_end(jm) = rmonth_end(jm-1) + rday * REAL( nmonth_len(jm), wp ) |
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| 158 | END DO |
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| 159 | ! |
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| 160 | END SUBROUTINE |
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| 161 | |
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| 162 | |
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| 163 | SUBROUTINE day( kt ) |
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| 164 | !!---------------------------------------------------------------------- |
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| 165 | !! *** ROUTINE day *** |
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| 166 | !! |
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| 167 | !! ** Purpose : Compute the date with a day iteration IF necessary. |
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| 168 | !! |
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| 169 | !! ** Method : - ??? |
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| 170 | !! |
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| 171 | !! ** Action : - nyear : current year |
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| 172 | !! - nmonth : current month of the year nyear |
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| 173 | !! - nday : current day of the month nmonth |
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| 174 | !! - nday_year : current day of the year nyear |
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| 175 | !! - ndastp : = nyear*10000 + nmonth*100 + nday |
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| 176 | !! - adatrj : date in days since the beginning of the run |
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| 177 | !! - rsec_year : current time of the year (in second since 00h, jan 1st) |
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| 178 | !!---------------------------------------------------------------------- |
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| 179 | INTEGER, INTENT(in) :: kt ! ocean time-step indices |
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| 180 | ! |
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| 181 | CHARACTER (len=25) :: charout |
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| 182 | !!---------------------------------------------------------------------- |
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| 183 | |
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| 184 | ! ! New time-step |
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| 185 | rsec_year = rsec_year + rdttra(1) |
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| 186 | rsec_month = rsec_month + rdttra(1) |
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| 187 | rsec_day = rsec_day + rdttra(1) |
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| 188 | adatrj = adatrj + rdttra(1) / rday |
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| 189 | fjulday = fjulday + rdttra(1) / rday |
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| 190 | |
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| 191 | IF( rsec_day > rday ) THEN ! NEW day |
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| 192 | ! |
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| 193 | nday = nday + 1 |
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| 194 | nday_year = nday_year + 1 |
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| 195 | rsec_day = 0.5 * rdttra(1) |
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| 196 | ! |
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| 197 | IF( nday == nmonth_len(nmonth) + 1 ) THEN ! NEW month |
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| 198 | nday = 1 |
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| 199 | nmonth = nmonth + 1 |
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| 200 | rsec_month = 0.5 * rdttra(1) |
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| 201 | IF( nmonth == 13 ) THEN ! NEW year |
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| 202 | nyear = nyear + 1 |
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| 203 | nmonth = 1 |
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| 204 | nday_year = 1 |
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| 205 | rsec_year = 0.5 * rdttra(1) |
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| 206 | sec1jan000 = sec1jan000 + rday * REAL( nyear_len(1), wp ) |
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| 207 | IF( nleapy == 1 ) CALL day_mth |
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| 208 | ENDIF |
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| 209 | ENDIF |
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| 210 | ! |
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| 211 | ndastp = nyear * 10000 + nmonth * 100 + nday ! NEW date |
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| 212 | ! |
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| 213 | IF(lwp) WRITE(numout,'(a,i8,a,i4.4,a,i2.2,a,i2.2,a,i3.3)') '======>> time-step =', kt, & |
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| 214 | & ' New day, DATE Y/M/D = ', nyear, '/', nmonth, '/', nday, ' nday_year = ', nday_year |
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| 215 | IF(lwp) WRITE(numout,'(a,F9.0,a,F9.0,a,F9.0)') ' rsec_year = ', rsec_year, & |
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| 216 | & ' rsec_month = ', rsec_month, ' rsec_day = ', rsec_day |
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| 217 | ENDIF |
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| 218 | |
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| 219 | IF(ln_ctl) THEN |
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| 220 | WRITE(charout,FMT="('kt =', I4,' d/m/y =',I2,I2,I4)") kt, nday, nmonth, nyear |
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| 221 | CALL prt_ctl_info(charout) |
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| 222 | ENDIF |
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| 223 | |
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| 224 | IF( lrst_oce ) CALL day_rst( kt, 'WRITE' ) |
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| 225 | ! |
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| 226 | END SUBROUTINE day |
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| 227 | |
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| 228 | |
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| 229 | SUBROUTINE day_rst( kt, cdrw ) |
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| 230 | !!--------------------------------------------------------------------- |
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| 231 | !! *** ROUTINE ts_rst *** |
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| 232 | !! |
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| 233 | !! ** Purpose : Read or write calendar in restart file: |
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| 234 | !! |
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| 235 | !! WRITE(READ) mode: |
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| 236 | !! kt : number of time step since the begining of the experiment at the |
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| 237 | !! end of the current(previous) run |
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| 238 | !! adatrj(0) : number of elapsed days since the begining of the experiment at the |
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| 239 | !! end of the current(previous) run (REAL -> keep fractions of day) |
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| 240 | !! ndastp : date at the end of the current(previous) run (coded as yyyymmdd integer) |
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| 241 | !! |
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| 242 | !! According to namelist parameter nrstdt, |
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| 243 | !! nrstdt = 0 no control on the date (nit000 is arbitrary). |
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| 244 | !! nrstdt = 1 we verify that nit000 is equal to the last |
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| 245 | !! time step of previous run + 1. |
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| 246 | !! In both those options, the exact duration of the experiment |
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| 247 | !! since the beginning (cumulated duration of all previous restart runs) |
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| 248 | !! is not stored in the restart and is assumed to be (nit000-1)*rdt. |
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| 249 | !! This is valid is the time step has remained constant. |
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| 250 | !! |
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| 251 | !! nrstdt = 2 the duration of the experiment in days (adatrj) |
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| 252 | !! has been stored in the restart file. |
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| 253 | !!---------------------------------------------------------------------- |
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| 254 | INTEGER , INTENT(in) :: kt ! ocean time-step |
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| 255 | CHARACTER(len=*), INTENT(in) :: cdrw ! "READ"/"WRITE" flag |
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| 256 | ! |
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| 257 | REAL(wp) :: zkt, zndastp |
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| 258 | !!---------------------------------------------------------------------- |
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| 259 | |
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| 260 | IF( TRIM(cdrw) == 'READ' ) THEN |
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| 261 | |
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| 262 | IF( iom_varid( numror, 'kt', ldstop = .FALSE. ) > 0 ) THEN |
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| 263 | ! Get Calendar informations |
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| 264 | CALL iom_get( numror, 'kt', zkt ) ! last time-step of previous run |
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| 265 | IF(lwp) THEN |
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| 266 | WRITE(numout,*) ' *** Info read in restart : ' |
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| 267 | WRITE(numout,*) ' previous time-step : ', NINT( zkt ) |
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| 268 | WRITE(numout,*) ' *** restart option' |
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| 269 | SELECT CASE ( nrstdt ) |
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| 270 | CASE ( 0 ) ; WRITE(numout,*) ' nrstdt = 0 : no control of nit000' |
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| 271 | CASE ( 1 ) ; WRITE(numout,*) ' nrstdt = 1 : no control the date at nit000 (use ndate0 read in the namelist)' |
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| 272 | CASE ( 2 ) ; WRITE(numout,*) ' nrstdt = 2 : calendar parameters read in restart' |
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| 273 | END SELECT |
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| 274 | WRITE(numout,*) |
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| 275 | ENDIF |
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| 276 | ! Control of date |
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| 277 | IF( nit000 - NINT( zkt ) /= 1 .AND. nrstdt /= 0 ) & |
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| 278 | & CALL ctl_stop( ' ===>>>> : problem with nit000 for the restart', & |
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| 279 | & ' verify the restart file or rerun with nrstdt = 0 (namelist)' ) |
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| 280 | ! define ndastp and adatrj |
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| 281 | IF ( nrstdt == 2 ) THEN |
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| 282 | ! read the parameters correspondting to nit000 - 1 (last time step of previous run) |
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| 283 | CALL iom_get( numror, 'ndastp', zndastp ) |
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| 284 | ndastp = NINT( zndastp ) |
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| 285 | CALL iom_get( numror, 'adatrj', adatrj ) |
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| 286 | ELSE |
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| 287 | ! parameters correspondting to nit000 - 1 (as we start the step loop with a call to day) |
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| 288 | ndastp = ndate0 - 1 ! ndate0 read in the namelist in dom_nam, we assume that we start run at 00:00 |
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| 289 | adatrj = ( REAL( nit000-1, wp ) * rdttra(1) ) / rday |
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| 290 | ! note this is wrong if time step has changed during run |
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| 291 | ENDIF |
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| 292 | ELSE |
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| 293 | ! parameters correspondting to nit000 - 1 (as we start the step loop with a call to day) |
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| 294 | ndastp = ndate0 - 1 ! ndate0 read in the namelist in dom_nam, we assume that we start run at 00:00 |
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| 295 | adatrj = ( REAL( nit000-1, wp ) * rdttra(1) ) / rday |
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| 296 | ENDIF |
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| 297 | ! |
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| 298 | IF(lwp) THEN |
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| 299 | WRITE(numout,*) ' *** Info used values : ' |
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| 300 | WRITE(numout,*) ' date ndastp : ', ndastp |
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| 301 | WRITE(numout,*) ' number of elapsed days since the begining of run : ', adatrj |
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| 302 | WRITE(numout,*) |
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| 303 | ENDIF |
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| 304 | ! |
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| 305 | ELSEIF( TRIM(cdrw) == 'WRITE' ) THEN |
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| 306 | ! |
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| 307 | IF( kt == nitrst ) THEN |
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| 308 | IF(lwp) WRITE(numout,*) |
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| 309 | IF(lwp) WRITE(numout,*) 'rst_write : write oce restart file kt =', kt |
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| 310 | IF(lwp) WRITE(numout,*) '~~~~~~~' |
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| 311 | ENDIF |
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| 312 | ! calendar control |
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| 313 | CALL iom_rstput( kt, nitrst, numrow, 'kt' , REAL( kt , wp) ) ! time-step |
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| 314 | CALL iom_rstput( kt, nitrst, numrow, 'ndastp' , REAL( ndastp, wp) ) ! date |
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| 315 | CALL iom_rstput( kt, nitrst, numrow, 'adatrj' , adatrj ) ! number of elapsed days since |
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| 316 | ! ! the begining of the run [s] |
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| 317 | ENDIF |
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| 318 | ! |
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| 319 | END SUBROUTINE day_rst |
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| 320 | |
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| 321 | !!====================================================================== |
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| 322 | END MODULE daymod |
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