! Copyright 2014 College of William and Mary
!
! Licensed under the Apache License, Version 2.0 (the "License");
! you may not use this file except in compliance with the License.
! You may obtain a copy of the License at
!
! http://www.apache.org/licenses/LICENSE-2.0
!
! Unless required by applicable law or agreed to in writing, software
! distributed under the License is distributed on an "AS IS" BASIS,
! WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
! See the License for the specific language governing permissions and
! limitations under the License.
!
!****************************************************************************************
! *
! Read in (x,y,z,time) from station.xyzt (z>=0 is distance from F.S.; time in sec)
! for 3D variables (surface values for 2D variables) DEFINED @ nodes or elem. Interpolation in time.
! Not working for lon/lat.
! Works for mixed tri/quad outputs, combined or uncombined nc outputs.
! Inputs: (1) nc files and out2d*.nc;
! (2) station.xyzt: make sure all times are after 1st record (to ensure interpolation in time);
! pad extra days before and after if necessary.
! z>=0 from surface.
! (3) screen inputs
! (4) vgrid.in: in this dir or ../
! Outputs: fort.18; fort.11 (fatal errors); fort.12: nonfatal errors.
!
! ifort -mcmodel=medium -CB -O2 -o read_output10_xyzt.exe ../UtilLib/extract_mod2.f90 ../UtilLib/compute_zcor.f90 ../UtilLib/pt_in_poly_test.f90 read_output10_xyzt.f90 -I$NETCDF/include -I$NETCDF_FORTRAN/include -L$NETCDF_FORTRAN/lib -L$NETCDF/lib -lnetcdf -lnetcdff
!****************************************************************************************
!
program read_out
use netcdf
use extract_mod2
use compute_zcor
use pt_in_poly_test
character(len=30) :: file63,varname,file62
character(len=12) :: it_char
logical :: lexist
integer,allocatable :: kbp(:),kbp00(:),iday(:,:),irecord(:,:),node3(:,:),iep(:),irank_read(:), &
&i34(:),elnode(:,:)
real,allocatable :: sigma(:),cs(:),ztot(:),times(:,:),out(:,:,:),out2(:,:), &
&eta2(:),arco(:,:),ztmp(:),x00(:),y00(:),z00(:),t00(:),sigma_lcl(:,:),ztmp2(:,:),dp(:), &
&outvar(:,:)
real*8,allocatable :: timeout(:),xnd(:),ynd(:)
integer :: char_len,start_2d(2),start_3d(3),start_4d(4), &
&count_2d(2),count_3d(3),count_4d(4),dimids(100),idims(100)
integer :: nodel(3) !,dimids(100),idims(100), &
! &start_2d(2),start_3d(3),start_4d(4), &
! &count_2d(2),count_3d(3),count_4d(4)
dimension swild(3),out3(2),out4(1)
!long int for large files
!integer(kind=8) :: irec
print*, 'Input variable name to read from (e.g. elev):'
read(*,'(a30)')varname
varname=adjustl(varname); len_var=len_trim(varname)
! Invliad number used for 3D variables: below bottom; dry spot; no parents
print*, 'Input values to be used for invalid place:'
read(*,*)rjunk
print*, 'Variable is node (1) or elem (2) based?'
read(*,*)inode_elem
open(10,file='station.xyzt',status='old')
read(10,*)
read(10,*) nxy
allocate(x00(nxy),y00(nxy),z00(nxy),t00(nxy),stat=istat)
if(istat/=0) stop 'Falied to allocate (1)'
do i=1,nxy
read(10,*)j,x00(i),y00(i),z00(i),t00(i) !z00>=0 from F.S.; t00 in sec
if(z00(i)<0) then
write(*,*)'Invalid z value:',i; stop
endif
enddo !i
close(10)
!... Get basic info from out2d*.nc
!Returned vars: ne,np,ns,nrec,[xnd ynd dp](np),
!elnode,i34,nvrt,h0,dtout,kbp
call get_dims(1,np,ne,ns,nvrt,h0)
allocate(xnd(np),ynd(np),dp(np),kbp(np),i34(ne),elnode(4,ne),stat=istat)
if(istat/=0) stop 'alloc (1)'
call readheader(1,np,ne,ns,kbp,i34,elnode,nrec,xnd,ynd,dp,dtout)
print*, 'After header:',ne,np,ns,nvrt,nrec,i34(ne), &
&elnode(1:i34(ne),ne),h0,xnd(np),ynd(np),dp(np),dtout !,start_time
last_dim=max(np,ne,ns)
allocate(timeout(nrec),out(3,nvrt,2),out2(2,nvrt),eta2(np),node3(nxy,3),arco(nxy,3), &
&iep(nxy),iday(2,nxy),irecord(2,nxy),times(2,nxy),outvar(nvrt,last_dim),stat=istat)
outvar=-huge(1.0)
if(istat/=0) stop 'Failed to allocate (3)'
! Read in vgrid.in
allocate(ztot(nvrt),sigma(nvrt),sigma_lcl(nvrt,np),kbp00(np))
call get_vgrid_single('vgrid.in',np,nvrt,ivcor,kz,h_s,h_c,theta_b,theta_f,ztot,sigma,sigma_lcl,kbp)
allocate(ztmp(nvrt),ztmp2(nvrt,3))
! Calculate kbp00
if(ivcor==1) then
kbp00=kbp
else
do i=1,np
!Use large eta to get true bottom
call zcor_SZ_single(dp(i),1.e8,h0,h_s,h_c,theta_b,theta_f,kz,nvrt,ztot,sigma, &
&ztmp(:),idry2,kbp00(i))
enddo !i
endif !ivcor
!... Find parent element for (x00,y00)
iep=0
! arco=1./3 !initialize for pts without parents
! do l=1,nxy
! node3(l,1:3)=elnode(1:3,1) !initialize for pts without parents
! enddo !l
do i=1,ne
do l=1,nxy
if(iep(l)/=0) cycle
call pt_in_poly_single(i34(i),real(xnd(elnode(1:i34(i),i))), &
&real(ynd(elnode(1:i34(i),i))),x00(l),y00(l),inside,arco(l,1:3),nodel)
if(inside==1) then
iep(l)=i
!print*, 'Found:',l,arco(l,1:3),nodel
node3(l,1:3)=elnode(nodel(1:3),i)
endif !inside
enddo !l; build pts
ifl=0 !flag
do l=1,nxy
if(iep(l)==0) then
ifl=1
exit
endif
enddo !l
if(ifl==0) exit
enddo !i=1,ne
iabort=0
do j=1,nxy
if(iep(j)<=0) then
write(11,*)'Cannot find a parent for pt:',j,x00(j),y00(j)
iabort=1
endif
enddo !j
if(iabort==1) stop 'check fort.11 for pts outside'
!... Compute stack and record # for each pt
do i=1,nxy
! Check if time is before first record
if(t00(i)<dtout) then
write(11,*)'Time before first record:',i,t00(i)
stop
endif
! Lower and upper bound stacks and record #s for t00
iday(1,i)=(t00(i)-dtout)/nrec/dtout+1
if(iday(1,i)<1) then
write(11,*)'Impossible'; stop
else
irecord(1,i)=(t00(i)-(iday(1,i)-1)*nrec*dtout)/dtout
!Bounding record time just b4 the cast time, corresponding to record
!irecord(1,i) in stack iday(1,i)
times(1,i)=((iday(1,i)-1)*nrec+irecord(1,i))*dtout
iday(2,i)=t00(i)/nrec/dtout+1
irecord(2,i)=(t00(i)-(iday(2,i)-1)*nrec*dtout)/dtout+1
!Bounding record time just after the cast time, corresponding to
!record irecord(2,i) in stack iday(2,i). Note that irecord(2,i)
!may<irecord(1,i) (e.g. t00 before 1st record of iday(2,i))
times(2,i)=((iday(2,i)-1)*nrec+irecord(2,i))*dtout
endif
if(irecord(1,i)>nrec.or.irecord(2,i)>nrec) then
write(11,*)'Record # overflow: ',i,irecord(:,i)
stop
endif
if(t00(i)<times(1,i).or.t00(i)>times(2,i)) then
write(11,*)'Wrong time bounds:',i,t00(i),times(:,i),iday(:,i),irecord(:,i)
stop
endif
enddo !i=1,nxy
!... Time iteration
do i=1,nxy
loop1: do l=1,2 !2 times
print*, 'reading stack ',iday(l,i),' for point ',i
write(it_char,'(i12)')iday(l,i)
it_char=adjustl(it_char)
leng=len_trim(it_char)
file62='out2d_'//it_char(1:leng)//'.nc'
iret=nf90_open(trim(adjustl(file62)),OR(NF90_NETCDF4,NF90_NOWRITE),ncid4)
!time is double
iret=nf90_inq_varid(ncid4,'time',itime_id)
iret=nf90_get_var(ncid4,itime_id,timeout,(/1/),(/nrec/))
! print*, 'time=',timeout !,trim(adjustl(file63))
!Find nc file
file63=varname(1:len_var)//'_'//it_char(1:leng)//'.nc'
inquire(file=file63,exist=lexist)
if(lexist) then
i23d=2 !3D var
else
i23d=1 !2D
file63=file62
endif
iret=nf90_open(trim(adjustl(file63)),OR(NF90_NETCDF4,NF90_NOWRITE),ncid)
iret=nf90_inq_varid(ncid,varname(1:len_var),ivarid1)
if(iret/=nf90_NoErr) stop 'Var not found'
iret=nf90_Inquire_Variable(ncid,ivarid1,ndims=ndims,dimids=dimids)
if(ndims>100) stop 'increase dimension of dimids & idims'
do ii=1,ndims
iret=nf90_Inquire_Dimension(ncid,dimids(ii),len=idims(ii))
enddo !ii
npes=idims(ndims-1) !np|ne|ns
if(npes/=np.and.npes/=ne) stop 'can only handle node- or elem-based'
!'
if(idims(ndims)/=nrec) stop 'last dim is not time'
! iret=nf90_get_att(ncid,ivarid1,'i23d',i23d)
! if(i23d<=0.or.i23d>6) stop 'wrong i23d'
! if(i23d>3.and.ics==2) stop 'ics=2 with elem-based var'
! iret=nf90_get_att(ncid,ivarid1,'ivs',ivs)
! !print*, 'i23d:',i23d,ivs,idims(1:ndims)
!
irec=irecord(l,i)
!Get elev
iret=nf90_inq_varid(ncid4,'elevation',itmp)
start_2d(1)=1; start_2d(2)=irec
count_2d(1)=np; count_2d(2)=1
iret=nf90_get_var(ncid4,itmp,eta2,start_2d,count_2d)
if(i23d==1) then !2D
start_2d(1)=1; start_2d(2)=irec
count_2d(1)=npes; count_2d(2)=1
iret=nf90_get_var(ncid,ivarid1,outvar(1,1:npes),start_2d,count_2d)
else !3D
start_3d(1:2)=1; start_3d(3)=irec
count_3d(1)=nvrt; count_3d(2)=npes; count_3d(3)=1
iret=nf90_get_var(ncid,ivarid1,outvar(:,1:npes),start_3d,count_3d)
endif
!Available now: outvar(nvrt,np|ne), eta2(np)
!Debug
! write(98,*)i,l
! do j=1,np
! write(98,*)j,kbp00(j),outvar(1,:,j)
! enddo !j
! stop
out2(l,:)=0
out3(l)=0
if(mod(i23d-1,3)==0) then !2D
do j=1,3 !nodes
nd=node3(i,j)
if(inode_elem==1) then !node based
out2(l,1)=out2(l,1)+arco(i,j)*outvar(1,nd)
else !elem
out2(l,1)=outvar(1,iep(i))
endif
enddo !j
else !3D
! Do interpolation
etal=0; dep=0; idry=0
do j=1,3
nd=node3(i,j)
if(eta2(nd)+dp(nd)<h0) idry=1
etal=etal+arco(i,j)*eta2(nd)
dep=dep+arco(i,j)*dp(nd)
! Debug
! write(11,*)i,j,nd,dp(nd),arco(i,j)
enddo !j
if(idry==1) then
out3(:)=rjunk
exit loop1
else !element wet
!Compute z-coordinates
if(ivcor==1) then !localized
do j=1,3
nd=node3(i,j)
do k=kbp(nd)+1,nvrt-1
ztmp2(k,j)=(eta2(nd)+dp(nd))*sigma_lcl(k,nd)+eta2(nd)
enddo !k
ztmp2(kbp(nd),j)=-dp(nd) !to avoid underflow
ztmp2(nvrt,j)=eta2(nd) !to avoid underflow
enddo !j
ztmp=0
kbpl=minval(kbp(node3(i,1:3)))
do k=kbpl,nvrt
do j=1,3
nd=node3(i,j)
ztmp(k)=ztmp(k)+arco(i,j)*ztmp2(max(k,kbp(nd)),j)
enddo !j
enddo !k
else if(ivcor==2) then !SZ
call zcor_SZ_single(dep,etal,h0,h_s,h_c,theta_b,theta_f,kz,nvrt,ztot, &
&sigma,ztmp(:),idry2,kbpl)
endif
do k=kbpl,nvrt
do j=1,3
nd=node3(i,j)
kin=max(k,kbp00(nd))
if(inode_elem==1) then !node
out2(l,k)=out2(l,k)+arco(i,j)*outvar(kin,nd)
else !elem
out2(l,k)=outvar(k,iep(i))
endif
enddo !j
enddo !k
! Interplate in vertical
k0=0
do k=kbpl,nvrt-1
if(ztmp(nvrt)-z00(i)>=ztmp(k).and.ztmp(nvrt)-z00(i)<=ztmp(k+1)) then
k0=k
rat=(ztmp(nvrt)-z00(i)-ztmp(k))/(ztmp(k+1)-ztmp(k))
exit
endif
enddo !k
if(k0==0) then
out3(:)=rjunk
exit loop1
! write(12,*)'Warning: failed to find a vertical level:',it,i
else
if(inode_elem==1) then !node
out3(l)=out2(l,k0)*(1-rat)+out2(l,k0+1)*rat
else if (i23d<=6) then !elem
out3(l)=out2(l,k0+1) !FV
endif
endif
endif !dry/wet
endif !i23d
enddo loop1 !l=1,2; 2 times
! Interpolate in time
trat=(t00(i)-times(1,i))/(times(2,i)-times(1,i)) !must be [0,1]
if(i23d==1) then !2D
if(iep(i)==0) then !no parents
out4(1)=rjunk
else
out4(1)=out2(1,1)*(1-trat)+out2(2,1)*trat
endif
write(18,'(e16.8,1000(1x,f15.3))')t00(i)/86400,out4(1),x00(i),y00(i)
else !3D
if(iep(i)==0) then !no parents
out4(1)=rjunk
else
out4(1)=out3(1)*(1-trat)+out3(2)*trat
endif
write(18,*)t00(i)/86400,out4(1),x00(i),y00(i),z00(i)
endif
enddo !i=1,nxy
print*, 'Finished!'
stop
end