MODULE daymod !!====================================================================== !! *** MODULE daymod *** !! Ocean : management of the model calendar !!===================================================================== !! History : OPA ! 1994-09 (M. Pontaud M. Imbard) Original code !! ! 1997-03 (O. Marti) !! ! 1997-05 (G. Madec) !! ! 1997-08 (M. Imbard) !! NEMO 1.0 ! 2003-09 (G. Madec) F90 + nyear, nmonth, nday !! ! 2004-01 (A.M. Treguier) new calculation based on adatrj !! ! 2006-08 (G. Madec) surface module major update !! ! 2015-11 (D. Lea) Allow non-zero initial time of day !!---------------------------------------------------------------------- !!---------------------------------------------------------------------- !! day : calendar !!---------------------------------------------------------------------- !! ----------- WARNING ----------- !! ------------------------------- !! sbcmod assume that the time step is dividing the number of second of !! in a day, i.e. ===> MOD( rday, rdt ) == 0 !! except when user defined forcing is used (see sbcmod.F90) !!---------------------------------------------------------------------- USE dom_oce ! ocean space and time domain USE phycst ! physical constants USE ioipsl , ONLY : ymds2ju ! for calendar ! USE in_out_manager ! I/O manager USE iom ! IMPLICIT NONE PRIVATE PUBLIC day ! called by step.F90 PUBLIC day_mth ! Needed by TAM INTEGER, PUBLIC :: nsecd, nsecd05, ndt, ndt05 !: (PUBLIC for TAM) !!---------------------------------------------------------------------- !! NEMO/OCE 4.0 , NEMO Consortium (2018) !! $Id: daymod.F90 10068 2018-08-28 14:09:04Z nicolasmartin $ !! Software governed by the CeCILL license (see ./LICENSE) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE day_mth !!---------------------------------------------------------------------- !! *** ROUTINE day_init *** !! !! ** Purpose : calendar values related to the months !! !! ** Action : - nmonth_len : length in days of the months of the current year !! - nyear_len : length in days of the previous/current year !! - nmonth_half : second since the beginning of the year and the halft of the months !! - nmonth_end : second since the beginning of the year and the end of the months !!---------------------------------------------------------------------- INTEGER :: jm ! dummy loop indice !!---------------------------------------------------------------------- ! length of the month of the current year (from nleapy, read in namelist) IF ( nleapy < 2 ) THEN nmonth_len(:) = (/ 31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 31 /) nyear_len(:) = 365 IF ( nleapy == 1 ) THEN ! we are using calandar with leap years IF ( MOD(nyear-1, 4) == 0 .AND. ( MOD(nyear-1, 400) == 0 .OR. MOD(nyear-1, 100) /= 0 ) ) THEN nyear_len(0) = 366 ENDIF IF ( MOD(nyear , 4) == 0 .AND. ( MOD(nyear , 400) == 0 .OR. MOD(nyear , 100) /= 0 ) ) THEN nmonth_len(2) = 29 nyear_len(1) = 366 ENDIF IF ( MOD(nyear+1, 4) == 0 .AND. ( MOD(nyear+1, 400) == 0 .OR. MOD(nyear+1, 100) /= 0 ) ) THEN nyear_len(2) = 366 ENDIF ENDIF ELSE nmonth_len(:) = nleapy ! all months with nleapy days per year nyear_len(:) = 12 * nleapy ENDIF ! half month in second since the begining of the year: ! time since Jan 1st 0 1 2 ... 11 12 13 ! ---------*--|--*--|--*--| ... |--*--|--*--|--*--|-------------------------------------- ! <---> <---> <---> ... <---> <---> <---> ! month number 0 1 2 ... 11 12 13 ! ! nmonth_half(jm) = rday * REAL( 0.5 * nmonth_len(jm) + SUM(nmonth_len(1:jm-1)) ) nmonth_half(0) = - nsecd05 * nmonth_len(0) DO jm = 1, 13 nmonth_half(jm) = nmonth_half(jm-1) + nsecd05 * ( nmonth_len(jm-1) + nmonth_len(jm) ) END DO nmonth_end(0) = 0 DO jm = 1, 13 nmonth_end(jm) = nmonth_end(jm-1) + nsecd * nmonth_len(jm) END DO ! END SUBROUTINE SUBROUTINE day( kt ) !!---------------------------------------------------------------------- !! *** ROUTINE day *** !! !! ** Purpose : Compute the date with a day iteration IF necessary. !! !! ** Method : - ??? !! !! ** Action : - nyear : current year !! - nmonth : current month of the year nyear !! - nday : current day of the month nmonth !! - nday_year : current day of the year nyear !! - ndastp : = nyear*10000 + nmonth*100 + nday !! - adatrj : date in days since the beginning of the run !! - nsec_year : current time of the year (in second since 00h, jan 1st) !!---------------------------------------------------------------------- INTEGER, INTENT(in) :: kt ! ocean time-step indices ! CHARACTER (len=25) :: charout REAL(wp) :: zprec ! fraction of day corresponding to 0.1 second !!---------------------------------------------------------------------- ! zprec = 0.1 / rday ! ! New time-step nsec_year = nsec_year + ndt nsec_month = nsec_month + ndt nsec_week = nsec_week + ndt nsec_day = nsec_day + ndt adatrj = adatrj + rdt / rday fjulday = fjulday + rdt / rday IF( ABS(fjulday - REAL(NINT(fjulday),wp)) < zprec ) fjulday = REAL(NINT(fjulday),wp) ! avoid truncation error IF( ABS(adatrj - REAL(NINT(adatrj ),wp)) < zprec ) adatrj = REAL(NINT(adatrj ),wp) ! avoid truncation error IF( nsec_day > nsecd ) THEN ! New day ! nday = nday + 1 nday_year = nday_year + 1 nsec_day = ndt05 ! IF( nday == nmonth_len(nmonth) + 1 ) THEN ! New month nday = 1 nmonth = nmonth + 1 nsec_month = ndt05 IF( nmonth == 13 ) THEN ! New year nyear = nyear + 1 nmonth = 1 nday_year = 1 nsec_year = ndt05 nsec1jan000 = nsec1jan000 + nsecd * nyear_len(1) IF( nleapy == 1 ) CALL day_mth ENDIF ENDIF ! ndastp = nyear * 10000 + nmonth * 100 + nday ! New date ! !compute first day of the year in julian days CALL ymds2ju( nyear, 01, 01, 0.0, fjulstartyear ) ! IF(lwp) WRITE(numout,'(a,i8,a,i4.4,a,i2.2,a,i2.2,a,i3.3)') '======>> time-step =', kt, & & ' New day, DATE Y/M/D = ', nyear, '/', nmonth, '/', nday, ' nday_year = ', nday_year IF(lwp) WRITE(numout,'(a,i8,a,i7,a,i5)') ' nsec_year = ', nsec_year, & & ' nsec_month = ', nsec_month, ' nsec_day = ', nsec_day, ' nsec_week = ', nsec_week ENDIF IF( nsec_week > 7*nsecd ) nsec_week = ndt05 ! New week ! END SUBROUTINE day !!====================================================================== END MODULE daymod