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Realistic surface emissions (WIP)
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Marco de Bruine committed Feb 27, 2020
1 parent 4b9dec3 commit e61fddc
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Showing 4 changed files with 132 additions and 34 deletions.
15 changes: 13 additions & 2 deletions src/modemisdata.f90
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Expand Up @@ -30,10 +30,21 @@


module modemisdata

implicit none
save

real, allocatable :: svemis (:,:,:)
real, allocatable :: &
svemis_a (:,:,:), &
svemis_b (:,:,:)

! TODO INTEGRATION WITH MODCHEM, possibly switch?
! For example, nchem, firstchem etc, but also structure for species
! 'location', i.e. switch scalar field represents which species?

integer, parameter :: nemis = 1, ico2 = 1, ich4 = 2

character (len = 3), dimension(2) :: svlist = (/'co2', 'ch4' /)
logical, dimension(2) :: emislist = (/.true., .false./)

end module modemisdata
142 changes: 112 additions & 30 deletions src/modemission.f90
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Expand Up @@ -30,36 +30,80 @@ module modemission

contains

subroutine initemis
subroutine initemission

use modglobal, only : i2, j2, nsv
use moddatetime, only : datex, prevday, nextday

implicit none

allocate(svemis_a(i2,j2,nsv))
allocate(svemis_b(i2,j2,nsv))

if (datex(5) >= 30) then
call reademission( datex(1), datex(2), datex(3), datex(4), svemis_a)

if (datex(4) == 23) then
call reademission(nextday(1), nextday(2), nextday(3), 0, svemis_b)
else
call reademission( datex(1), datex(2), datex(3), datex(4)+1, svemis_b)
endif

else
call reademission( datex(1), datex(2), datex(3), datex(4), svemis_b)

if (datex(4) == 0) then
call reademission(prevday(1), prevday(2), prevday(3), 23, svemis_a)
else
call reademission( datex(1), datex(2), datex(3), datex(4)-1, svemis_a)
endif

endif
end subroutine initemission

subroutine reademission(iyear, imonth, iday, ihour, emisfield)

! ----------------------------------------------------------------------
! Reading of emission files
! EXPAND
! Multiple/all tracers
! ----------------------------------------------------------------------

use mpi
use mpi, only : MPI_INFO_NULL
use netcdf
use modmpi, only : myidx, myidy
use modmpi, only : myid, myidx, myidy, comm3d
use modglobal, only : i1, j1, i2, j2, imax, jmax, nsv
use moddatetime, only : datex

implicit none

character (len = *), parameter :: fname = "emission_input.nc"
integer, intent(in) :: iyear, imonth, iday, ihour
real, intent(out) :: emisfield(i2,j2,nsv)

integer, parameter :: ndim = 3
integer :: start(ndim), count(ndim)
integer :: ncid, varid
integer :: isv

character(len=12) :: sdatetime

! Create string from given date
write(sdatetime, "(I0.4,2I0.2,2I0.2)") iyear, imonth, iday, ihour, 0

write(6,"(A18, A12)") "Reading emission: ", sdatetime

integer, parameter :: ndim = 3
integer :: start(ndim), count(ndim)
integer :: ncid, varid
integer :: n
do isv = 1, nsv

allocate(svemis(i2,j2,nsv))
if (emislist(isv)) then
call check( nf90_open( svlist(isv)//'_emis_'//sdatetime//'.nc', IOR(NF90_NOWRITE, NF90_MPIIO), &
ncid, comm = comm3d, info = MPI_INFO_NULL) )
call check( nf90_inq_varid( ncid, svlist(isv), varid) )
call check( nf90_get_var ( ncid, varid, emisfield(2:i1,2:j1,isv), &
start = (/1 + myidx * imax, 1 + myidy * jmax, 1/), &
count = (/imax, jmax, 1/) ) )
call check( nf90_close( ncid ) )
endif

call check( nf90_open ( fname, IOR(NF90_NOWRITE, NF90_MPIIO), ncid, &
comm = MPI_COMM_WORLD, info = MPI_INFO_NULL) )
call check( nf90_inq_varid( ncid, "emission", varid) )
call check( nf90_get_var ( ncid, varid, svemis(2:i1,2:i1,1), &
start = (/1 + myidx * imax, 1 + myidy * jmax, 1/), &
count = (/imax, jmax, 1/) ) )
call check( nf90_close ( ncid ) )
end do

contains

Expand All @@ -68,35 +112,73 @@ subroutine check(status)

if(status /= nf90_noerr) then
print *, trim(nf90_strerror(status))
stop 2
stop 'NetCDF error in modemission. See outputfile for more information.'
end if
end subroutine check

end subroutine initemis
end subroutine reademission

! ----
! Do calculations on emission data and transfer to svp array
! ----
subroutine emission
! ----------------------------------------------------------------------
! Read appropriate emission fields, interpolate and transfer to svp
!
! NOTES
! 1. MDB TODO Align properly with non-chem tracers, i.e. cloud scalars from e.g.
! microphysics.
! ----------------------------------------------------------------------

use modfields, only : svp
use modglobal, only : i1, j1, ih, jh, nsv
use modfields, only : rhof

use modfields, only : svp
use modglobal, only : i1, j1, ih, jh, nsv, &
rdt, rtimee, rk3step
use modfields, only : rhof
use moddatetime, only : datex, nextday

implicit none

svp(2:i1,2:j1,1,1:nsv) = svp(2:i1,2:j1,1,1:nsv) + svemis(2:i1,2:j1,1:nsv)/rhof(1)
real :: emistime_s, emistime_e ! Emission timers
real, parameter :: div3600 = 1./3600. ! Quick division

! --------------------------------------------------------------------------
! Interpolate and apply emission
! --------------------------------------------------------------------------
emistime_s = mod(rtimee + 1800., 3600.)*div3600

svp(2:i1,2:j1,1,1:nsv) = svp(2:i1,2:j1,1,1:nsv) + &
((1. - emistime_s)*svemis_a(2:i1, 2:j1, 1:nsv) + &
emistime_s *svemis_b(2:i1, 2:j1, 1:nsv))/(3600.*rhof(1))

! --------------------------------------------------------------------------
! Read emission files when neccesary, i.e. simulation reaches half hour mark
! after current timestep
! --------------------------------------------------------------------------

if ( rk3step == 3 ) then
emistime_e = mod(rtimee + rdt + 1800., 3600.)*div3600

if ( emistime_e < emistime_s ) then
! Transfer data from 'ahead-of-modeltime' field to 'past-modeltime' field
svemis_a = svemis_b

! Read new 'ahead-of-modeltime' emission field
if ( datex(4) == 23 ) then
call reademission(nextday(1), nextday(2), nextday(3), 0, svemis_b)
else
call reademission( datex(1), datex(2), datex(3), datex(4)+1, svemis_b)
endif
endif

endif

end subroutine emission

! ----
! --------------------------------------------------------------------------
! Cleanup after run.
! ----
! --------------------------------------------------------------------------
subroutine exitemission

implicit none

deallocate(svemis)
deallocate(svemis_a, svemis_b)

end subroutine exitemission

Expand Down
6 changes: 4 additions & 2 deletions src/modstartup.f90
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Expand Up @@ -62,7 +62,8 @@ subroutine startup
use modforces, only : lforce_user
use modsurfdata, only : z0,ustin,wtsurf,wqsurf,wsvsurf,ps,thls,isurf
use modsurface, only : initsurface
use modemission, only : initemis
use moddatetime, only : initdatetime
use modemission, only : initemission
use modfields, only : initfields
use modpois, only : initpois
use modradiation, only : initradiation
Expand Down Expand Up @@ -255,7 +256,8 @@ subroutine startup
call initthermodynamics
call initradiation
call initsurface
call initemis
call initdatetime
call initemission
call initsubgrid
call initpois
call readinitfiles ! moved to obtain the correct btime for the timedependent forcings in case of a warmstart
Expand Down
3 changes: 3 additions & 0 deletions src/program.f90
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Expand Up @@ -148,7 +148,9 @@ program DALES !Version 4.0.0alpha
!use modprojection, only : initprojection, projection
use modchem, only : initchem,twostep
use modcanopy, only : initcanopy, canopy, exitcanopy
use moddatetime, only : datetime
use modemission, only : emission

implicit none

!----------------------------------------------------------------
Expand Down Expand Up @@ -199,6 +201,7 @@ program DALES !Version 4.0.0alpha
call tstep_update ! Calculate new timestep
call timedep
call samptend(tend_start,firstterm=.true.)
call datetime

!-----------------------------------------------------
! 3.1 RADIATION
Expand Down

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