| [4] | 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 | subroutine readavailable |
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| 23 | |
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| 24 | !***************************************************************************** |
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| 25 | ! * |
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| 26 | ! This routine reads the dates and times for which windfields are * |
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| 27 | ! available. * |
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| 28 | ! * |
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| 29 | ! Authors: A. Stohl * |
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| 30 | ! * |
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| 31 | ! 6 February 1994 * |
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| 32 | ! 8 February 1999, Use of nested fields, A. Stohl * |
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| 33 | ! * |
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| 34 | !***************************************************************************** |
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| 35 | ! * |
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| 36 | ! Variables: * |
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| 37 | ! bdate beginning date as Julian date * |
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| 38 | ! beg beginning date for windfields * |
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| 39 | ! end ending date for windfields * |
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| 40 | ! fname filename of wind field, help variable * |
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| 41 | ! ideltas [s] duration of modelling period * |
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| 42 | ! idiff time difference between 2 wind fields * |
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| 43 | ! idiffnorm normal time difference between 2 wind fields * |
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| 44 | ! idiffmax [s] maximum allowable time between 2 wind fields * |
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| 45 | ! jul julian date, help variable * |
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| 46 | ! numbwf actual number of wind fields * |
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| 47 | ! wfname(maxwf) file names of needed wind fields * |
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| 48 | ! wfspec(maxwf) file specifications of wind fields (e.g., if on disc) * |
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| 49 | ! wftime(maxwf) [s]times of wind fields relative to beginning time * |
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| 50 | ! wfname1,wfspec1,wftime1 = same as above, but only local (help variables) * |
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| 51 | ! * |
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| 52 | ! Constants: * |
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| 53 | ! maxwf maximum number of wind fields * |
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| 54 | ! unitavailab unit connected to file AVAILABLE * |
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| 55 | ! * |
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| 56 | !***************************************************************************** |
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| 57 | |
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| 58 | use par_mod |
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| 59 | use com_mod |
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| 60 | |
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| 61 | implicit none |
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| 62 | |
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| 63 | integer :: i,idiff,ldat,ltim,wftime1(maxwf),numbwfn(maxnests),k |
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| 64 | integer :: wftime1n(maxnests,maxwf),wftimen(maxnests,maxwf) |
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| 65 | real(kind=dp) :: juldate,jul,beg,end |
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| 66 | character(len=255) :: fname,spec,wfname1(maxwf),wfspec1(maxwf) |
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| 67 | character(len=255) :: wfname1n(maxnests,maxwf) |
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| 68 | character(len=40) :: wfspec1n(maxnests,maxwf) |
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| 69 | |
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| 70 | |
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| 71 | ! Windfields are only used, if they are within the modelling period. |
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| 72 | ! However, 1 additional day at the beginning and at the end is used for |
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| 73 | ! interpolation. -> Compute beginning and ending date for the windfields. |
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| 74 | !************************************************************************ |
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| 75 | |
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| 76 | if (ideltas.gt.0) then ! forward trajectories |
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| 77 | beg=bdate-1._dp |
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| 78 | end=bdate+real(ideltas,kind=dp)/86400._dp+real(idiffmax,kind=dp)/ & |
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| 79 | 86400._dp |
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| 80 | else ! backward trajectories |
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| 81 | beg=bdate+real(ideltas,kind=dp)/86400._dp-real(idiffmax,kind=dp)/ & |
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| 82 | 86400._dp |
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| 83 | end=bdate+1._dp |
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| 84 | endif |
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| 85 | |
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| 86 | ! Open the wind field availability file and read available wind fields |
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| 87 | ! within the modelling period. |
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| 88 | !********************************************************************* |
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| 89 | |
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| 90 | open(unitavailab,file=path(4)(1:length(4)),status='old', & |
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| 91 | err=999) |
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| 92 | |
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| 93 | do i=1,3 |
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| 94 | read(unitavailab,*) |
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| 95 | end do |
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| 96 | |
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| 97 | numbwf=0 |
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| 98 | 100 read(unitavailab,'(i8,1x,i6,2(6x,a255))',end=99) & |
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| 99 | ldat,ltim,fname,spec |
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| 100 | jul=juldate(ldat,ltim) |
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| 101 | if ((jul.ge.beg).and.(jul.le.end)) then |
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| 102 | numbwf=numbwf+1 |
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| 103 | if (numbwf.gt.maxwf) then ! check exceedance of dimension |
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| 104 | write(*,*) 'Number of wind fields needed is too great.' |
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| 105 | write(*,*) 'Reduce modelling period (file "COMMAND") or' |
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| 106 | write(*,*) 'reduce number of wind fields (file "AVAILABLE").' |
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| 107 | stop |
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| 108 | endif |
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| 109 | |
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| 110 | wfname1(numbwf)=fname(1:index(fname,' ')) |
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| 111 | wfspec1(numbwf)=spec |
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| 112 | wftime1(numbwf)=nint((jul-bdate)*86400._dp) |
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| 113 | endif |
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| 114 | goto 100 ! next wind field |
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| 115 | |
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| 116 | 99 continue |
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| 117 | |
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| 118 | close(unitavailab) |
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| 119 | |
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| 120 | ! Open the wind field availability file and read available wind fields |
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| 121 | ! within the modelling period (nested grids) |
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| 122 | !********************************************************************* |
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| 123 | |
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| 124 | do k=1,numbnests |
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| [20] | 125 | print*,length(numpath+2*(k-1)+1),length(numpath+2*(k-1)+2),length(4),length(3) |
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| 126 | print*,path(numpath+2*(k-1)+2)(1:length(numpath+2*(k-1)+2)) |
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| [4] | 127 | open(unitavailab,file=path(numpath+2*(k-1)+2) & |
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| 128 | (1:length(numpath+2*(k-1)+2)),status='old',err=998) |
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| 129 | |
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| 130 | do i=1,3 |
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| 131 | read(unitavailab,*) |
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| 132 | end do |
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| 133 | |
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| 134 | numbwfn(k)=0 |
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| 135 | 700 read(unitavailab,'(i8,1x,i6,2(6x,a255))',end=699) ldat, & |
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| 136 | ltim,fname,spec |
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| 137 | jul=juldate(ldat,ltim) |
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| 138 | if ((jul.ge.beg).and.(jul.le.end)) then |
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| 139 | numbwfn(k)=numbwfn(k)+1 |
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| 140 | if (numbwfn(k).gt.maxwf) then ! check exceedance of dimension |
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| 141 | write(*,*) 'Number of nested wind fields is too great.' |
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| 142 | write(*,*) 'Reduce modelling period (file "COMMAND") or' |
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| 143 | write(*,*) 'reduce number of wind fields (file "AVAILABLE").' |
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| 144 | stop |
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| 145 | endif |
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| 146 | |
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| 147 | wfname1n(k,numbwfn(k))=fname |
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| 148 | wfspec1n(k,numbwfn(k))=spec |
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| 149 | wftime1n(k,numbwfn(k))=nint((jul-bdate)*86400._dp) |
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| 150 | endif |
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| 151 | goto 700 ! next wind field |
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| 152 | |
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| 153 | 699 continue |
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| 154 | |
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| 155 | close(unitavailab) |
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| 156 | end do |
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| 157 | |
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| 158 | |
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| 159 | ! Check wind field times of file AVAILABLE (expected to be in temporal order) |
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| 160 | !**************************************************************************** |
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| 161 | |
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| 162 | if (numbwf.eq.0) then |
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| 163 | write(*,*) ' #### FLEXPART MODEL ERROR! NO WIND FIELDS #### ' |
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| 164 | write(*,*) ' #### AVAILABLE FOR SELECTED TIME PERIOD. #### ' |
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| 165 | stop |
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| 166 | endif |
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| 167 | |
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| 168 | do i=2,numbwf |
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| 169 | if (wftime1(i).le.wftime1(i-1)) then |
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| 170 | write(*,*) 'FLEXPART ERROR: FILE AVAILABLE IS CORRUPT.' |
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| 171 | write(*,*) 'THE WIND FIELDS ARE NOT IN TEMPORAL ORDER.' |
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| 172 | write(*,*) 'PLEASE CHECK FIELD ',wfname1(i) |
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| 173 | stop |
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| 174 | endif |
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| 175 | end do |
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| 176 | |
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| 177 | ! Check wind field times of file AVAILABLE for the nested fields |
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| 178 | ! (expected to be in temporal order) |
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| 179 | !*************************************************************** |
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| 180 | |
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| 181 | do k=1,numbnests |
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| 182 | if (numbwfn(k).eq.0) then |
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| 183 | write(*,*) '#### FLEXPART MODEL ERROR! NO WIND FIELDS ####' |
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| 184 | write(*,*) '#### AVAILABLE FOR SELECTED TIME PERIOD. ####' |
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| 185 | stop |
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| 186 | endif |
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| 187 | |
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| 188 | do i=2,numbwfn(k) |
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| 189 | if (wftime1n(k,i).le.wftime1n(k,i-1)) then |
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| 190 | write(*,*) 'FLEXPART ERROR: FILE AVAILABLE IS CORRUPT. ' |
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| 191 | write(*,*) 'THE NESTED WIND FIELDS ARE NOT IN TEMPORAL ORDER.' |
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| 192 | write(*,*) 'PLEASE CHECK FIELD ',wfname1n(k,i) |
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| 193 | write(*,*) 'AT NESTING LEVEL ',k |
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| 194 | stop |
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| 195 | endif |
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| 196 | end do |
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| 197 | |
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| 198 | end do |
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| 199 | |
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| 200 | |
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| 201 | ! For backward trajectories, reverse the order of the windfields |
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| 202 | !*************************************************************** |
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| 203 | |
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| 204 | if (ideltas.ge.0) then |
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| 205 | do i=1,numbwf |
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| 206 | wfname(i)=wfname1(i) |
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| 207 | wfspec(i)=wfspec1(i) |
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| 208 | wftime(i)=wftime1(i) |
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| 209 | end do |
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| 210 | do k=1,numbnests |
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| 211 | do i=1,numbwfn(k) |
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| 212 | wfnamen(k,i)=wfname1n(k,i) |
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| 213 | wfspecn(k,i)=wfspec1n(k,i) |
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| 214 | wftimen(k,i)=wftime1n(k,i) |
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| 215 | end do |
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| 216 | end do |
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| 217 | else |
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| 218 | do i=1,numbwf |
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| 219 | wfname(numbwf-i+1)=wfname1(i) |
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| 220 | wfspec(numbwf-i+1)=wfspec1(i) |
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| 221 | wftime(numbwf-i+1)=wftime1(i) |
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| 222 | end do |
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| 223 | do k=1,numbnests |
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| 224 | do i=1,numbwfn(k) |
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| 225 | wfnamen(k,numbwfn(k)-i+1)=wfname1n(k,i) |
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| 226 | wfspecn(k,numbwfn(k)-i+1)=wfspec1n(k,i) |
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| 227 | wftimen(k,numbwfn(k)-i+1)=wftime1n(k,i) |
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| 228 | end do |
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| 229 | end do |
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| 230 | endif |
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| 231 | |
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| 232 | ! Check the time difference between the wind fields. If it is big, |
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| 233 | ! write a warning message. If it is too big, terminate the trajectory. |
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| 234 | !********************************************************************* |
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| 235 | |
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| 236 | do i=2,numbwf |
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| 237 | idiff=abs(wftime(i)-wftime(i-1)) |
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| 238 | if (idiff.gt.idiffmax) then |
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| 239 | write(*,*) 'FLEXPART WARNING: TIME DIFFERENCE BETWEEN TWO' |
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| 240 | write(*,*) 'WIND FIELDS IS TOO BIG FOR TRANSPORT CALCULATION.& |
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| 241 | &' |
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| 242 | write(*,*) 'THEREFORE, TRAJECTORIES HAVE TO BE SKIPPED.' |
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| 243 | else if (idiff.gt.idiffnorm) then |
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| 244 | write(*,*) 'FLEXPART WARNING: TIME DIFFERENCE BETWEEN TWO' |
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| 245 | write(*,*) 'WIND FIELDS IS BIG. THIS MAY CAUSE A DEGRADATION' |
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| 246 | write(*,*) 'OF SIMULATION QUALITY.' |
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| 247 | endif |
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| 248 | end do |
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| 249 | |
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| 250 | do k=1,numbnests |
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| 251 | if (numbwfn(k).ne.numbwf) then |
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| 252 | write(*,*) 'FLEXPART ERROR: THE AVAILABLE FILES FOR THE' |
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| 253 | write(*,*) 'NESTED WIND FIELDS ARE NOT CONSISTENT WITH' |
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| 254 | write(*,*) 'THE AVAILABLE FILE OF THE MOTHER DOMAIN. ' |
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| 255 | write(*,*) 'ERROR AT NEST LEVEL: ',k |
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| 256 | stop |
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| 257 | endif |
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| 258 | do i=1,numbwf |
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| 259 | if (wftimen(k,i).ne.wftime(i)) then |
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| 260 | write(*,*) 'FLEXPART ERROR: THE AVAILABLE FILES FOR THE' |
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| 261 | write(*,*) 'NESTED WIND FIELDS ARE NOT CONSISTENT WITH' |
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| 262 | write(*,*) 'THE AVAILABLE FILE OF THE MOTHER DOMAIN. ' |
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| 263 | write(*,*) 'ERROR AT NEST LEVEL: ',k |
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| 264 | stop |
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| 265 | endif |
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| 266 | end do |
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| 267 | end do |
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| 268 | |
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| 269 | ! Reset the times of the wind fields that are kept in memory to no time |
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| 270 | !********************************************************************** |
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| 271 | |
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| 272 | do i=1,2 |
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| 273 | memind(i)=i |
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| 274 | memtime(i)=999999999 |
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| 275 | end do |
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| 276 | |
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| 277 | return |
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| 278 | |
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| [20] | 279 | 998 write(*,*) ' #### FLEXPART MODEL ERROR! AVAILABLE FILE #### ' |
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| [4] | 280 | write(*,'(a)') ' '//path(numpath+2*(k-1)+2) & |
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| 281 | (1:length(numpath+2*(k-1)+2)) |
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| 282 | write(*,*) ' #### CANNOT BE OPENED #### ' |
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| 283 | stop |
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| 284 | |
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| [20] | 285 | 999 write(*,*) ' #### FLEXPART MODEL ERROR! AVAILABLE IILE #### ' |
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| [4] | 286 | write(*,'(a)') ' '//path(4)(1:length(4)) |
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| 287 | write(*,*) ' #### CANNOT BE OPENED #### ' |
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| 288 | stop |
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| 289 | |
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| 290 | end subroutine readavailable |
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