gethourlyOH.f90 6.49 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
!**********************************************************************
! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010         *
! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa,             *
! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann   *
!                                                                     *
! This file is part of FLEXPART.                                      *
!                                                                     *
! FLEXPART is free software: you can redistribute it and/or modify    *
! it under the terms of the GNU General Public License as published by*
! the Free Software Foundation, either version 3 of the License, or   *
! (at your option) any later version.                                 *
!                                                                     *
! FLEXPART is distributed in the hope that it will be useful,         *
! but WITHOUT ANY WARRANTY; without even the implied warranty of      *
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the       *
! GNU General Public License for more details.                        *
!                                                                     *
! You should have received a copy of the GNU General Public License   *
! along with FLEXPART.  If not, see <http://www.gnu.org/licenses/>.   *
!**********************************************************************

subroutine gethourlyOH(itime)
  !                     i     
  !*****************************************************************************
  !                                                                            *
  !                                                                            *
  !    Author: R.L. Thompson                                                   *
  !                                                                            *
  !    Nov 2014                                                                *
  !                                                                            *
  !                                                                            *
  !*****************************************************************************
  ! Variables:                                                                 *
  !                                                                            *
  !*****************************************************************************

  use oh_mod
  use par_mod
  use com_mod

  implicit none
  
  integer :: itime
  integer :: ix,jy,kz,m1,m2
  integer :: ijx,jjy
  integer :: jjjjmmdd,hhmmss
  real :: sza,jrate,photo_O1D,zenithangle
  real(kind=dp) :: jul1,jul2

!  print*, 'itime: ',itime
!  print*, 'memOHtime(1):',memOHtime(1)
!  print*, 'memOHtime(2):',memOHtime(2)


  ! Check hourly OH field is available for the current time step
  !**************************************************************

  if ((ldirect*memOHtime(1).le.ldirect*itime).and. &
       (ldirect*memOHtime(2).gt.ldirect*itime)) then

  ! The right OH fields are already in memory -> don't do anything
  !****************************************************************

    continue

  else if ((ldirect*memOHtime(2).le.ldirect*itime).and. &
       (memOHtime(2).ne.0.)) then

    ! Current time is after 2nd OH field
    !************************************

    memOHtime(1)=memOHtime(2)
    memOHtime(2)=memOHtime(1)+ldirect*3600.
    OH_hourly(:,:,:,1)=OH_hourly(:,:,:,2)

    ! Compute new hourly value of OH
    !**********************************************************

    jul2=bdate+memOHtime(2)/86400._dp  ! date for next hour
    call caldate(jul2,jjjjmmdd,hhmmss)
    m2=(jjjjmmdd-(jjjjmmdd/10000)*10000)/100

!    print*, 'jul2:',jul2
!    print*, 'm2:',m2

    do kz=1,nzOH
      do jy=1,nyOH
        do ix=1,nxOH
          ijx=minloc(abs(lonjr-lonOH(ix)),dim=1,mask=abs(lonjr-lonOH(ix)).eq.minval(abs(lonjr-lonOH(ix))))
          jjy=minloc(abs(latjr-latOH(jy)),dim=1,mask=abs(latjr-latOH(jy)).eq.minval(abs(latjr-latOH(jy))))
          ! calculate solar zenith angle in degrees (sza) 
          sza=zenithangle(latOH(jy),lonOH(ix),jul2)
          ! calculate J(O1D) (jrate)
          jrate=photo_O1D(sza)
          ! apply hourly correction to OH
          if(jrate_average(ijx,jjy,m2).gt.0.) then
            OH_hourly(ix,jy,kz,2)=OH_field(ix,jy,kz,m2)*jrate/jrate_average(ijx,jjy,m2)
          else
            OH_hourly(ix,jy,kz,2)=0.
          endif
          !! for testing !!
          ! if(jy.eq.36.and.ix.eq.36.and.kz.eq.1) then
          !   write(999,fmt='(F6.3)') jrate/jrate_average(ijx,jjy,m2)
          ! endif
          ! if(jy.eq.11.and.ix.eq.36.and.kz.eq.1) then
          !   write(998,fmt='(F6.3)') jrate/jrate_average(ijx,jjy,m2)
          ! endif
        end do
      end do
    end do

  else

    ! No OH fields in memory -> compute both hourly OH fields
    !**********************************************************

    jul1=bdate  ! begin date of simulation (julian)
    call caldate(jul1,jjjjmmdd,hhmmss)
    m1=(jjjjmmdd-(jjjjmmdd/10000)*10000)/100
    memOHtime(1)=0.

    jul2=bdate+real(1./24.,kind=dp)  ! date for next hour
    call caldate(jul2,jjjjmmdd,hhmmss)
    m2=(jjjjmmdd-(jjjjmmdd/10000)*10000)/100
    memOHtime(2)=ldirect*3600.

!    print*, 'jul1:',jul1
!    print*, 'jul2:',jul2
!    print*, 'm1,m2:',m1,m2

    do kz=1,nzOH
      do jy=1,nyOH
        do ix=1,nxOH
          ijx=minloc(abs(lonjr-lonOH(ix)),dim=1,mask=abs(lonjr-lonOH(ix)).eq.minval(abs(lonjr-lonOH(ix))))
          jjy=minloc(abs(latjr-latOH(jy)),dim=1,mask=abs(latjr-latOH(jy)).eq.minval(abs(latjr-latOH(jy))))
          ! calculate solar zenith angle in degrees (sza), beginning 
          sza=zenithangle(latOH(jy),lonOH(ix),jul1)
          ! calculate J(O1D) (jrate), beginning
          jrate=photo_O1D(sza)
          ! apply hourly correction to OH
          if(jrate_average(ijx,jjy,m1).gt.0.) then
            OH_hourly(ix,jy,kz,1)=OH_field(ix,jy,kz,m1)*jrate/jrate_average(ijx,jjy,m1)
          else
            OH_hourly(ix,jy,kz,1)=0.
          endif
          ! calculate solar zenith angle in degrees (sza), after 1-hour 
          sza=zenithangle(latOH(jy),lonOH(ix),jul2)
          ! calculate J(O1D) (jrate), after 1-hour
          jrate=photo_O1D(sza)
          ! apply hourly correction to OH
          if(jrate_average(ijx,jjy,m2).gt.0.) then
            OH_hourly(ix,jy,kz,2)=OH_field(ix,jy,kz,m2)*jrate/jrate_average(ijx,jjy,m2)
          else
            OH_hourly(ix,jy,kz,2)=0.
          endif
        end do
      end do
    end do

  endif

end subroutine gethourlyOH