[6] | 1 | !********************************************************************** |
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| 2 | ! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010 * |
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| 3 | ! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa, * |
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| 4 | ! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann * |
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| 5 | ! * |
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| 6 | ! This file is part of FLEXPART. * |
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| 7 | ! * |
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| 8 | ! FLEXPART is free software: you can redistribute it and/or modify * |
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| 9 | ! it under the terms of the GNU General Public License as published by* |
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| 10 | ! the Free Software Foundation, either version 3 of the License, or * |
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| 11 | ! (at your option) any later version. * |
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| 12 | ! * |
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| 13 | ! FLEXPART is distributed in the hope that it will be useful, * |
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| 14 | ! but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 15 | ! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 16 | ! GNU General Public License for more details. * |
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| 17 | ! * |
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| 18 | ! You should have received a copy of the GNU General Public License * |
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| 19 | ! along with FLEXPART. If not, see <http://www.gnu.org/licenses/>. * |
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| 20 | !********************************************************************** |
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| 21 | |
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| 22 | function juldate(yyyymmdd,hhmiss) |
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| 23 | |
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| 24 | !***************************************************************************** |
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| 25 | ! * |
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| 26 | ! Calculates the Julian date * |
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| 27 | ! * |
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| 28 | ! AUTHOR: Andreas Stohl (15 October 1993) * |
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| 29 | ! * |
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| 30 | ! Variables: * |
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| 31 | ! dd Day * |
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| 32 | ! hh Hour * |
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| 33 | ! hhmiss Hour, minute + second * |
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| 34 | ! ja,jm,jy help variables * |
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| 35 | ! juldate Julian Date * |
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| 36 | ! julday help variable * |
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| 37 | ! mi Minute * |
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| 38 | ! mm Month * |
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| 39 | ! ss Second * |
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| 40 | ! yyyy Year * |
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| 41 | ! yyyymmddhh Date and Time * |
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| 42 | ! * |
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| 43 | ! Constants: * |
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| 44 | ! igreg help constant * |
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| 45 | ! * |
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| 46 | !***************************************************************************** |
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| 47 | |
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| 48 | use par_mod, only: dp |
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| 49 | |
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| 50 | implicit none |
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| 51 | |
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| 52 | integer :: yyyymmdd,yyyy,mm,dd,hh,mi,ss,hhmiss |
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| 53 | integer :: julday,jy,jm,ja |
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| 54 | integer,parameter :: igreg=15+31*(10+12*1582) |
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| 55 | real(kind=dp) :: juldate |
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| 56 | |
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| 57 | yyyy=yyyymmdd/10000 |
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| 58 | mm=(yyyymmdd-10000*yyyy)/100 |
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| 59 | dd=yyyymmdd-10000*yyyy-100*mm |
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| 60 | hh=hhmiss/10000 |
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| 61 | mi=(hhmiss-10000*hh)/100 |
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| 62 | ss=hhmiss-10000*hh-100*mi |
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| 63 | |
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| 64 | if (yyyy.eq.0) then |
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| 65 | print*, 'there is no year zero.' |
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| 66 | stop |
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| 67 | end if |
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| 68 | if (yyyy.lt.0) yyyy=yyyy+1 |
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| 69 | if (mm.gt.2) then |
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| 70 | jy=yyyy |
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| 71 | jm=mm+1 |
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| 72 | else |
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| 73 | jy=yyyy-1 |
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| 74 | jm=mm+13 |
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| 75 | endif |
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| 76 | julday=int(365.25*jy)+int(30.6001*jm)+dd+1720995 |
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| 77 | if (dd+31*(mm+12*yyyy).ge.igreg) then |
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| 78 | ja=int(0.01*jy) |
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| 79 | julday=julday+2-ja+int(0.25*ja) |
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| 80 | endif |
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| 81 | |
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| 82 | juldate=real(julday,kind=dp) + real(hh,kind=dp)/24._dp + & |
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| 83 | real(mi,kind=dp)/1440._dp + real(ss,kind=dp)/86400._dp |
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| 84 | |
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| 85 | end function juldate |
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