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Copy pathNORTRIP_multiroad_read_nora3_netcdf4.f90
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NORTRIP_multiroad_read_nora3_netcdf4.f90
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subroutine NORTRIP_read_nora3_netcdf4
!Reads NORA3 data - provided in individual hourly files with specific 6 hour intervals, from 4 to 9, read from 3 to 9
!Needs to read in 4 files directories and 25 files for a single calendar day from 01-00
!Do not need tocheck for ensemble and do not need to chaeck for alternative meteo as these do not exist
!Based on the metcoop reading routine
use NORTRIP_multiroad_index_definitions
use netcdf
implicit none
!include 'netcdf.inc'
!Local variables
integer status_nc !Error message
integer id_nc
integer dim_id_nc(num_dims_nc)
integer xtype_nc(num_var_nc)
integer natts_nc(num_var_nc)
integer var_id_nc(num_var_nc)
integer, allocatable :: dim_length_metcoop_nc(:)
integer, allocatable :: dim_start_metcoop_nc(:)
character(256) dimname_temp
integer i,j,k
integer i_grid_mid,j_grid_mid
real dlat_nc
integer exists
integer ii,jj,tt,kk
integer new_start_date_input(num_date_index)
logical found_file
character(256) pathname_nc_in,filename_nc_in,filename_alternative_nc_in
integer dim_id_nc_ensemble
logical ensemble_dim_flag
integer nDims
double precision, allocatable :: var1d_nc_dp(:)
double precision, allocatable :: var2d_nc_dp(:,:)
!double precision, allocatable :: var3d_nc_dp(:,:,:)
!double precision, allocatable :: var4d_nc_dp(:,:,:,:)
real, allocatable :: var4d_nc(:,:,:,:)
real, allocatable :: var3d_nc_in(:,:,:,:)
real, allocatable :: var1d_nc_in(:,:)
double precision, allocatable :: var1d_time_nc_in(:)
double precision temp_date
double precision date_to_number
integer var_id_nc_projection
real :: TOC=273.15
real :: RH_from_dewpoint_func
double precision nora3_forecast_hour_dp
integer, allocatable :: nora3_forecast_hour(:)
integer, allocatable :: nora3_date_data(:,:)
logical, allocatable :: new_nora3_forecast(:)
integer nora3_start_index
integer nora3_index
double precision :: nora3_starting_hour=4.
integer new_nora3_forecast_count
integer a(num_date_index)
logical dim_read_flag
allocate (nora3_date_data(num_date_index,n_hours_input))
allocate (new_nora3_forecast(n_hours_input+1))
allocate (nora3_forecast_hour(n_hours_input+1))
write(unit_logfile,'(A)') '================================================================'
write(unit_logfile,'(A)') 'Reading meteorological data (NORTRIP_read_nora3_netcdf4)'
write(unit_logfile,'(A)') '================================================================'
!pathname_nc='C:\BEDRE BYLUFT\NORTRIP implementation\test\';
!filename_nc='AROME_1KM_OSLO_20141028_EPI.nc'
pathname_nc_in=pathname_nc
filename_nc_in=filename_nc_template
!Defne the NORA3 files corresponding to the input time
!fc<yyyymmddHH>_[num]_fp.nc num is 2 digits 003 to 009 and HH is the forecast hour
new_nora3_forecast_count=0
do i=1,n_hours_input
!Hours. small offset required
nora3_forecast_hour_dp=24.*date_to_number(date_data(:,i),ref_year)-nora3_starting_hour+.0001
!Set the date of the directory and file
call number_to_date((nora3_forecast_hour_dp-(dmod(nora3_forecast_hour_dp,6.)))/24.,nora3_date_data(:,i))
!Specify the forecast hour as the remainder
!nora3_forecast_hour(i)=floor(nora3_forecast_hour_dp-dmod(nora3_forecast_hour_dp,6.)*6.+0.5)
nora3_forecast_hour(i)=idint(dmod(nora3_forecast_hour_dp,6.))+nora3_starting_hour
!Specify if it is a new forecast or not
if (i.eq.1) then
new_nora3_forecast(i)=.true.
elseif (sum(nora3_date_data(:,i)).eq.sum(nora3_date_data(:,i-1))) then
new_nora3_forecast(i)=.false.
else
new_nora3_forecast(i)=.true.
endif
if (new_nora3_forecast(i)) then
new_nora3_forecast_count=new_nora3_forecast_count+1
endif
! write(*,*) i,nora3_forecast_hour(i),new_nora3_forecast(i)
! write(*,*) nora3_date_data(1:4,i)
!write(*,*) date_data(1:4,i)
!write(*,*) (nora3_forecast_hour_dp-(dmod(nora3_forecast_hour_dp,6.)))/24.,nora3_forecast_hour_dp
enddo
dim_read_flag=.false.
!i=0
do jj=1,n_hours_input
!i=i+1
if (new_nora3_forecast(jj)) then
!read all files in the directory
do kk=3,9
call date_to_datestr_bracket(nora3_date_data(:,jj),filename_nc_in,filename_nc)
!write(*,*) filename_nc_in,filename_nc
call date_to_datestr_bracket(nora3_date_data(:,jj),pathname_nc_in,pathname_nc)
call num_to_numstr_squarebracket(kk,filename_nc,filename_nc)
pathfilename_nc=trim(pathname_nc)//trim(filename_nc)
inquire(file=trim(pathfilename_nc),exist=exists)
if (.not.exists) then
write(unit_logfile,'(A,A)') ' WARNING: Meteo netcdf file does not exist: ', trim(pathfilename_nc)
endif
!Open the netcdf file for reading
write(unit_logfile,'(2A)') ' Opening netcdf meteo file: ',trim(pathfilename_nc)
status_nc = NF90_OPEN (pathfilename_nc, NF90_NOWRITE, id_nc)
if (status_nc .NE. NF90_NOERR) then
write(unit_logfile,'(A,I)') 'ERROR opening netcdf file: ',status_nc
stop 38
endif
!Find the projection. If no projection then in lat lon coordinates
status_nc = NF90_INQ_VARID (id_nc,trim(projection_name_nc),var_id_nc_projection)
if (status_nc.eq.NF90_NOERR) then
!If there is a projection then read in the attributes. All these are doubles
!status_nc = nf90_inquire_variable(id_nc, var_id_nc_projection, natts = numAtts_projection)
status_nc = nf90_get_att(id_nc, var_id_nc_projection, 'standard_parallel', meteo_nc_projection_attributes(1:2))
status_nc = nf90_get_att(id_nc, var_id_nc_projection, 'longitude_of_central_meridian', meteo_nc_projection_attributes(3))
status_nc = nf90_get_att(id_nc, var_id_nc_projection, 'latitude_of_projection_origin', meteo_nc_projection_attributes(4))
status_nc = nf90_get_att(id_nc, var_id_nc_projection, 'earth_radius', meteo_nc_projection_attributes(5))
meteo_nc_projection_type=LCC_projection_index
write(unit_logfile,'(A,5f12.2)') 'Reading lambert_conformal_conic projection. ',meteo_nc_projection_attributes(1:5)
else
meteo_nc_projection_type=LL_projection_index
endif
!Only set dimmensions for the first file
if (.not.dim_read_flag) then
!Find out the x,y and time dimmensions of the file by looking at pressure variable
status_nc = NF90_INQ_DIMID (id_nc,dim_name_nc(x_index),dim_id_nc(x_index))
status_nc = NF90_INQUIRE_DIMENSION (id_nc,dim_id_nc(x_index),dimname_temp,dim_length_nc(x_index))
status_nc = NF90_INQ_DIMID (id_nc,dim_name_nc(y_index),dim_id_nc(y_index))
status_nc = NF90_INQUIRE_DIMENSION (id_nc,dim_id_nc(y_index),dimname_temp,dim_length_nc(y_index))
status_nc = NF90_INQ_DIMID (id_nc,dim_name_nc(time_index),dim_id_nc(time_index))
!Reducing x and y dimensions to save space
call NORTRIP_reduce_meteo_region(id_nc)
dim_read_flag=.true.
endif
status_nc = NF90_INQUIRE_DIMENSION (id_nc,dim_id_nc(time_index),dimname_temp,dim_length_nc(time_index))
write(unit_logfile,'(A,3I)') ' Pos of dimensions (x,y,t): ',dim_id_nc
write(unit_logfile,'(A,3I)') ' Size of dimensions (x,y,t): ',dim_length_nc
if (number_of_time_steps.ne.0) then
dim_length_nc(time_index)=number_of_time_steps
write(unit_logfile,'(A,3I)') ' WARNING: Reducing dimensions of (t) to save space: ',dim_length_nc(time_index)
endif
!Allocate the nc arrays for reading
if (.not.allocated(var1d_nc)) then
allocate (var1d_nc(num_dims_nc,max(maxval(dim_length_nc),n_hours_input))) !x and y and time maximum dimmensions
var1d_nc=0.
endif
if (.not.allocated(var1d_time_nc)) allocate (var1d_time_nc(n_hours_input) )!x and y and time maximum dimmensions
if (.not.allocated(var1d_time_nc_in)) allocate (var1d_time_nc_in(9) )!x and y and time maximum dimmensions
if (.not.allocated(var1d_nc_in)) allocate (var1d_nc_in(num_dims_nc,max(maxval(dim_length_nc),n_hours_input))) !x and y and time maximum dimmensions
if (.not.allocated(var1d_nc_dp)) allocate (var1d_nc_dp(maxval(dim_length_nc))) !x and y and time maximum dimmensions
if (.not.allocated(var3d_nc)) allocate (var3d_nc(num_var_nc,dim_length_nc(x_index),dim_length_nc(y_index),n_hours_input))
if (.not.allocated(var3d_nc_in)) allocate (var3d_nc_in(num_var_nc,dim_length_nc(x_index),dim_length_nc(y_index),9))
if (.not.allocated(var2d_nc)) allocate (var2d_nc(2,dim_length_nc(x_index),dim_length_nc(y_index))) !Lat and lon
!allocate (var3d_nc_dp(dim_length_nc(x_index),dim_length_nc(y_index),dim_length_nc(time_index)))
if (.not.allocated(var2d_nc_dp)) allocate (var2d_nc_dp(dim_length_nc(x_index),dim_length_nc(y_index))) !Lat and lon
!allocate (var4d_nc_dp(dim_length_nc(x_index),dim_length_nc(y_index),1,dim_length_nc(time_index)))
if (.not.allocated(var4d_nc)) allocate (var4d_nc(dim_length_nc(x_index),dim_length_nc(y_index),1,dim_length_nc(time_index)))
!Set the number of hours to be read
!Read the x, y and time values
do i=1,num_dims_nc
status_nc = NF90_INQ_VARID (id_nc, trim(dim_name_nc(i)), var_id_nc(i))
status_nc = NF90_GET_VAR (id_nc, var_id_nc(i), var1d_nc_in(i,1:dim_length_nc(i)), start=(/dim_start_nc(i)/), count=(/dim_length_nc(i)/))
if (i.eq.time_index) then
status_nc = NF90_GET_VAR (id_nc, var_id_nc(i), var1d_nc_dp(1:dim_length_nc(i)), start=(/dim_start_nc(i)/), count=(/dim_length_nc(i)/))
!write(*,*) status_nc,dim_length_nc(i),trim(dim_name_nc(i)), var1d_nc_dp(1), var1d_nc_dp(dim_length_nc(i))
var1d_time_nc_in(kk)=var1d_nc_dp(1)
!write(*,*) var1d_nc_in(i,kk)
write(unit_logfile,'(3A,i14)') ' ',trim(dim_name_nc(i)),' (seconds): ',int(var1d_time_nc_in(kk))
else
var1d_nc(i,:)=var1d_nc_in(i,:)
write(unit_logfile,'(3A,2f12.2)') ' ',trim(dim_name_nc(i)),' (min, max in km): ' &
,minval(var1d_nc(i,1:dim_length_nc(i))),maxval(var1d_nc(i,1:dim_length_nc(i)))
endif
enddo
!MetCoOp data has 4 dimensions. z is 1 so must adjust this.
write(unit_logfile,'(a)') 'Reading as NORA3 meteo data with 4 dimensions:'
if (.not.allocated(dim_length_metcoop_nc)) allocate (dim_length_metcoop_nc(4))
if (.not.allocated(dim_start_metcoop_nc)) allocate (dim_start_metcoop_nc(4))
dim_length_metcoop_nc(1:2)=dim_length_nc(1:2)
dim_length_metcoop_nc(3)=1
dim_length_metcoop_nc(4)=dim_length_nc(time_index)
dim_start_metcoop_nc(1:2)=dim_start_nc(1:2)
dim_start_metcoop_nc(3)=1
dim_start_metcoop_nc(4)=dim_start_nc(time_index)
! write(*,*) dim_start_metcoop_nc
!write(*,*) dim_length_metcoop_nc
!Read through the variables in a loop
do i=1,num_var_nc
!write(*,*) i,trim(var_name_nc(i))
status_nc = NF90_INQ_VARID (id_nc, trim(var_name_nc(i)), var_id_nc(i))
!write(*,*) 'Status1: ',status_nc,id_nc,var_id_nc(i),trim(var_name_nc(i)),NF_NOERR
!write(*,*) 'Status1: ',dim_start_metcoop_nc
!write(*,*) 'Status1: ',dim_length_metcoop_nc
if (status_nc.eq.NF90_NOERR) then
if (i.eq.lat_index.or.i.eq.lon_index) then
!write(*,*) i,lat_index,lon_index,dim_start_metcoop_nc(1:2), dim_length_metcoop_nc(1:2)
!status_nc = NF_GET_VARA_REAL (id_nc, var_id_nc(i), dim_start_metcoop_nc(1:2), dim_length_metcoop_nc(1:2), var2d_nc(i,:,:))
!status_nc = NF_GET_VARA_DOUBLE (id_nc, var_id_nc(i), dim_start_nc(1:2), dim_length_nc(1:2), var2d_nc_dp);var2d_nc(i,:,:)=real(var2d_nc_dp)
status_nc = NF90_GET_VAR (id_nc, var_id_nc(i), var2d_nc_dp,start=(/dim_start_metcoop_nc(1:2)/), count=(/dim_length_metcoop_nc(1:2)/));var2d_nc(i,:,:)=real(var2d_nc_dp)
write(unit_logfile,'(A,i3,A,2A,2f16.4)') ' ',status_nc,' ',trim(var_name_nc(i)),' (min, max): ' &
,minval(var2d_nc(i,:,:)),maxval(var2d_nc(i,:,:))
else
!status_nc = NF_GET_VARA_REAL (id_nc, var_id_nc(i), dim_start_metcoop_nc, dim_length_metcoop_nc, var4d_nc);var3d_nc(i,:,:,:)=var4d_nc(:,:,1,:)
status_nc = NF90_GET_VAR (id_nc, var_id_nc(i), var4d_nc,start=(/dim_start_metcoop_nc/), count=(/dim_length_metcoop_nc/));var3d_nc_in(i,:,:,kk)=var4d_nc(:,:,1,1)
endif
var_available_nc(i)=.true.
else
write(unit_logfile,'(8A,8A)') ' Cannot read ',trim(var_name_nc(i))
var_available_nc(i)=.false.
endif
enddo
!NOTE: round off errors in precipitation. Need to include a 0 minimum.
status_nc = NF90_CLOSE (id_nc)
!Put in some basic data checks to see if file is corrupt
if (abs(maxval(var3d_nc(temperature_index,:,:,:))).gt.500) then
write(unit_logfile,'(A,e12.2)') ' ERROR: out of bounds temperature: ', maxval(var3d_nc(temperature_index,:,:,:))
write(unit_logfile,'(A)') ' STOPPING'
stop
endif
if (abs(maxval(var3d_nc(x_wind_index,:,:,:))).gt.500) then
write(unit_logfile,'(A,e12.2)') ' ERROR: out of bounds x wind: ', maxval(var3d_nc(x_wind_index,:,:,:))
write(unit_logfile,'(A)') ' STOPPING'
stop
endif
if (abs(maxval(var3d_nc(shortwaveradiation_index,:,:,:))).gt.5000) then
write(unit_logfile,'(A,e12.2)') ' ERROR: out of bounds short wave radiation: ', maxval(var3d_nc(shortwaveradiation_index,:,:,:))
write(unit_logfile,'(A)') ' STOPPING'
stop
endif
!Convert dew point to RH if RH not available and dewpoint is
if (var_available_nc(dewpoint_index).and..not.var_available_nc(relhumidity_index)) then
do k=1,size(var3d_nc,4)
do j=1,size(var3d_nc,3)
do i=1,size(var3d_nc,2)
var3d_nc(relhumidity_index,i,j,k)=RH_from_dewpoint_func(var3d_nc(temperature_index,i,j,k)-TOC,var3d_nc(dewpoint_index,i,j,k)-TOC)/100.
var3d_nc(relhumidity_index,i,j,k)=max(var3d_nc(relhumidity_index,i,j,k),0.)
var3d_nc(relhumidity_index,i,j,k)=min(var3d_nc(relhumidity_index,i,j,k),1.)
enddo
enddo
enddo
endif
!Calculate angle difference between North and the Model Y direction based on the middle grids
!Not correct, needs to be fixed
i_grid_mid=int(dim_length_nc(x_index)/2)
j_grid_mid=int(dim_length_nc(y_index)/2)
dgrid_nc(x_index)=var1d_nc(x_index,i_grid_mid)-var1d_nc(x_index,i_grid_mid-1)
dgrid_nc(y_index)=var1d_nc(y_index,j_grid_mid)-var1d_nc(y_index,j_grid_mid-1)
dlat_nc=var2d_nc(lat_index,i_grid_mid,j_grid_mid)-var2d_nc(lat_index,i_grid_mid,j_grid_mid-1)
!If the coordinates are in km instead of metres then change to metres (assuming the difference is not going to be > 100 km
if (dgrid_nc(x_index).lt.100.and.meteo_nc_projection_type.ne.LL_projection_index) then
dgrid_nc=dgrid_nc*1000.
var1d_nc(x_index,:)=var1d_nc(x_index,:)*1000.
var1d_nc(y_index,:)=var1d_nc(y_index,:)*1000.
endif
angle_nc=180./3.14159*acos(dlat_nc*3.14159/180.*6.37e6/dgrid_nc(x_index))
write(unit_logfile,'(A,2f12.1)') ' Grid spacing X and Y (m): ', dgrid_nc(x_index),dgrid_nc(y_index)
write(unit_logfile,'(A,2i,f12.4)') ' Angle difference between grid and geo North (i,j,deg): ', i_grid_mid,j_grid_mid,angle_nc
!Set the array dimensions to the available ones. Can be changed later based on input information, particularly for time
end_dim_nc=dim_length_nc
start_dim_nc=dim_start_nc
enddo !kk
!Read through the variables in a loop
dim_length_nc(time_index)=9
do i=1,num_var_nc
!Make appropriate changes, going backwards so as to overwrite the existing data
if (i.eq.precip_index.or.i.eq.precip_snow_index) then
do tt=dim_length_nc(time_index),2,-1
!write(*,*) dim_length_nc(y_index),tt
var3d_nc_in(i,:,:,tt)=var3d_nc_in(i,:,:,tt)-var3d_nc_in(i,:,:,tt-1)
enddo
!Don't allow precip below the cutoff value
where (var3d_nc_in(i,:,:,:).lt.precip_cutoff) var3d_nc_in(i,:,:,:)=0.
endif
if (i.eq.shortwaveradiation_index) then
do tt=dim_length_nc(time_index),2,-1
var3d_nc_in(i,:,:,tt)=(var3d_nc_in(i,:,:,tt)-var3d_nc_in(i,:,:,tt-1))/3600.
enddo
endif
if (i.eq.longwaveradiation_index) then
do tt=dim_length_nc(time_index),2,-1
var3d_nc_in(i,:,:,tt)=(var3d_nc_in(i,:,:,tt)-var3d_nc_in(i,:,:,tt-1))/3600.
enddo
endif
if (i.eq.elevation_index) then
var3d_nc_in(i,:,:,:)=var3d_nc_in(i,:,:,:)/9.8
endif
if (i.eq.lat_index.or.i.eq.lon_index) then
write(unit_logfile,'(A,i3,A,2A,2f16.2)') ' ',status_nc,' ',trim(var_name_nc(i)),' (min, max): ' &
,minval(var2d_nc(i,:,:)),maxval(var2d_nc(i,:,:))
else
write(unit_logfile,'(A,i3,A,2A,2f16.2)') ' ',status_nc,' ',trim(var_name_nc(i)),' (min, max): ' &
,minval(var3d_nc_in(i,:,:,:)),maxval(var3d_nc_in(i,:,:,:))
endif
enddo
!Place the files in the correct array
ii=jj
!write(*,*) ii,jj
var3d_nc(:,:,:,ii)=var3d_nc_in(:,:,:,nora3_forecast_hour(ii))
var1d_nc(:,ii)=var1d_nc_in(:,nora3_forecast_hour(ii))
var1d_time_nc(ii)=var1d_time_nc_in(nora3_forecast_hour(ii))
write(unit_logfile,'(2i,es16.8)') ii,nora3_forecast_hour(ii),var1d_time_nc(ii)
ii=ii+1
do while (ii.le.n_hours_input.and..not.new_nora3_forecast(ii))
var3d_nc(:,:,:,ii)=var3d_nc_in(:,:,:,nora3_forecast_hour(ii))
var1d_nc(:,ii)=var1d_nc_in(:,nora3_forecast_hour(ii))
var1d_time_nc(ii)=var1d_time_nc_in(nora3_forecast_hour(ii))
write(unit_logfile,'(2i,es16.8)') ii,nora3_forecast_hour(ii),var1d_time_nc(ii)
ii=ii+1
enddo
!write(*,*) 'HERE1: ',var1d_nc(time_index,1)
endif !new forecast
! write(*,*) 'HERE2: ',var1d_nc(time_index,1)
enddo !jj
! write(*,*) 'HERE3: ',var1d_nc(time_index,1)
dim_length_nc(time_index)=n_hours_input
start_dim_nc(time_index)=1
end_dim_nc(time_index)=n_hours_input
do ii=start_dim_nc(time_index),end_dim_nc(time_index)
call number_to_date((var1d_time_nc(ii)+1.)/dble(3600.*24.),a)
write(*,'(7i8,es16.8)') ii, a(1:6),var1d_time_nc(ii)!/3600./24.
enddo
if (allocated(var4d_nc)) deallocate(var4d_nc)
if (allocated(var3d_nc_in)) deallocate(var3d_nc_in)
if (allocated(var2d_nc_dp)) deallocate (var2d_nc_dp)
if (allocated(var1d_nc_dp)) deallocate(var1d_nc_dp)
if (allocated(var1d_nc_in)) deallocate (var1d_nc_in)
if (allocated(var1d_time_nc_in)) deallocate (var1d_time_nc_in)
end subroutine NORTRIP_read_nora3_netcdf4
!-------------------------------------------------------------------------
subroutine NORTRIP_reduce_meteo_region(id_nc)
!Reduces the region to be read
!Requires readingg of the dimensions and projection data pre calculation
!Requires finding max and min of the NORTRIP road files
use NORTRIP_multiroad_index_definitions
use netcdf
implicit none
double precision, allocatable :: var2d_nc_dp(:,:)
real, allocatable :: var2d_nc_temp(:,:,:)
real, allocatable :: var1d_nc_in(:,:)
real min_link_lat,min_link_lon,max_link_lat,max_link_lon
real min_link_y,min_link_x,max_link_y,max_link_x
real corner_link(4,2),grid_val(4,2)
integer corner_grid_dim(4,2)
integer min_grid_dim(2),max_grid_dim(2)
integer i,j,k
integer status_nc !Error message
integer id_nc
integer dim_id_nc(num_dims_nc)
integer var_id_nc(num_var_nc)
real distance
integer :: extra_grids=1 !Extend the selected grid further to deal with the interpolation
real min_grid_val(2),max_grid_val(2)
integer dim_end_nc(2)
logical :: check_distance=.false.
real x_temp,y_temp
integer i_grid_mid,j_grid_mid
write(unit_logfile,'(a,i)') 'Reducing meteorological region with nc file id: ',id_nc
!Set to the initial value
dim_start_nc=1
!Find the max and min of the road link files in lat and lon
min_link_lat=minval(inputdata_rl(lat0_rl_index,:))
min_link_lon=minval(inputdata_rl(lon0_rl_index,:))
max_link_lat=maxval(inputdata_rl(lat0_rl_index,:))
max_link_lon=maxval(inputdata_rl(lon0_rl_index,:))
corner_link(1,1)=min_link_lon;corner_link(1,2)=min_link_lat
corner_link(2,1)=min_link_lon;corner_link(2,2)=max_link_lat
corner_link(3,1)=max_link_lon;corner_link(3,2)=max_link_lat
corner_link(4,1)=max_link_lon;corner_link(4,2)=min_link_lat
!Convert to meteo coordinates
!gridded
if (meteo_nc_projection_type.eq.LCC_projection_index) then
min_link_x=1e36;min_link_y=1e36;max_link_x=-1e36;max_link_y=-1e36
do k=1,size(inputdata_rl,2)
call lb2lambert2_uEMEP(x_temp,y_temp,inputdata_rl(lon0_rl_index,k),inputdata_rl(lat0_rl_index,k),meteo_nc_projection_attributes)
if (x_temp.lt.min_link_x) min_link_x=x_temp
if (y_temp.lt.min_link_y) min_link_y=y_temp
if (x_temp.gt.max_link_x) max_link_x=x_temp
if (y_temp.gt.max_link_y) max_link_y=y_temp
!write(*,*) min_link_x,min_link_y,x_temp,y_temp
enddo
corner_link(1,1)=min_link_x;corner_link(1,2)=min_link_y
corner_link(2,1)=min_link_x;corner_link(2,2)=max_link_y
corner_link(3,1)=max_link_x;corner_link(3,2)=max_link_y
corner_link(4,1)=max_link_x;corner_link(4,2)=min_link_y
endif
!write(*,*) 'min_link_lat ',min_link_lat
! write(*,*) 'min_link_lon ',min_link_lon
!write(*,*) 'max_link_lat ',max_link_lat
! write(*,*) 'max_link_lon ',max_link_lon
write(unit_logfile,'(A,4f12.5)') 'Road link min and max lat,lon', min_link_lon,max_link_lon,min_link_lat,max_link_lat
!Find the dimension lengths
!status_nc = NF90_INQ_DIMID (id_nc,dim_name_nc(x_index),dim_id_nc(x_index))
!status_nc = NF90_INQUIRE_DIMENSION (id_nc,dim_id_nc(x_index),dimname_temp,dim_length_nc(x_index))
!status_nc = NF90_INQ_DIMID (id_nc,dim_name_nc(y_index),dim_id_nc(y_index))
!status_nc = NF90_INQUIRE_DIMENSION (id_nc,dim_id_nc(y_index),dimname_temp,dim_length_nc(y_index))
!write(unit_logfile,'(A,2I)') ' Pos of dimensions (x,y): ',dim_id_nc(1:2)
!write(unit_logfile,'(A,2I)') ' Size of dimensions (x,y): ',dim_length_nc(1:2)
!Open the netcdf file for reading
!write(unit_logfile,'(2A)') ' Opening netcdf meteo file: ',trim(pathfilename_nc)
!status_nc = NF90_OPEN (pathfilename_nc, NF90_NOWRITE, id_nc)
!if (status_nc .NE. NF90_NOERR) then
! write(unit_logfile,'(A,I)') 'ERROR opening netcdf file: ',status_nc
! stop 38
!endif
if (.not.allocated(var2d_nc_dp)) allocate (var2d_nc_dp(dim_length_nc(x_index),dim_length_nc(y_index))) !Lat and lon
if (.not.allocated(var2d_nc_temp)) allocate (var2d_nc_temp(2,dim_length_nc(x_index),dim_length_nc(y_index))) !Lat and lon
if (.not.allocated(var1d_nc_in)) allocate (var1d_nc_in(2,max(dim_length_nc(x_index),dim_length_nc(y_index)))) !Lat and lon
!write(*,*) 'HERE1: ',dim_length_nc
!write(*,*) 'HERE2: ',dim_start_nc
!Read in the lat and lon positions in the meteo file
!do i=lat_index,lon_index
! status_nc = NF90_INQ_VARID (id_nc, trim(var_name_nc(i)), var_id_nc(i))
! !write(*,*) status_nc,trim(var_name_nc(i)),var_id_nc(i)
! if (status_nc.eq.NF90_NOERR) then
! status_nc = NF90_GET_VAR (id_nc, var_id_nc(i), var2d_nc_dp,start=(/dim_start_nc(1:2)/), count=(/dim_length_nc(1:2)/));var2d_nc_temp(i,:,:)=real(var2d_nc_dp(:,:))
! endif
! write(unit_logfile,'(A,i3,A,2A,2f16.4)') ' ',status_nc,' ',trim(var_name_nc(i)),' (min, max): ',minval(var2d_nc_temp(i,:,:)),maxval(var2d_nc_temp(i,:,:))
! enddo
do i=x_index,y_index
status_nc = NF90_INQ_VARID (id_nc, trim(dim_name_nc(i)), var_id_nc(i))
status_nc = NF90_GET_VAR (id_nc, var_id_nc(i), var1d_nc_in(i,1:dim_length_nc(i)), start=(/dim_start_nc(i)/), count=(/dim_length_nc(i)/))
write(unit_logfile,'(3A,2f12.2)') ' ',trim(dim_name_nc(i)),' (min, max in km): ' &
,minval(var1d_nc_in(i,1:dim_length_nc(i))),maxval(var1d_nc_in(i,1:dim_length_nc(i)))
enddo
i_grid_mid=int(dim_length_nc(x_index)/2)
j_grid_mid=int(dim_length_nc(y_index)/2)
dgrid_nc(x_index)=var1d_nc_in(x_index,i_grid_mid)-var1d_nc_in(x_index,i_grid_mid-1)
dgrid_nc(y_index)=var1d_nc_in(y_index,j_grid_mid)-var1d_nc_in(y_index,j_grid_mid-1)
do k=1,4
!Assumes lambert projection. Does not account for lat lon
!call lb2lambert2_uEMEP(x_temp,y_temp,corner_link(k,1),corner_link(k,2),meteo_nc_projection_attributes)
x_temp=corner_link(k,1);y_temp=corner_link(k,2);
corner_grid_dim(k,1)=1+floor((x_temp-var1d_nc_in(x_index,1))/dgrid_nc(x_index)+0.5)
corner_grid_dim(k,2)=1+floor((y_temp-var1d_nc_in(y_index,1))/dgrid_nc(y_index)+0.5)
! write(*,*) ': ',k,corner_grid_dim(k,1),corner_grid_dim(k,2)
! write(*,*) ':: ',x_temp,y_temp,var1d_nc_in(x_index,1),var1d_nc_in(y_index,1)
! write(*,*) '::: ',dgrid_nc(x_index),dgrid_nc(y_index)
grid_val(k,1)=var1d_nc_in(x_index,corner_grid_dim(k,1))
grid_val(k,2)=var1d_nc_in(y_index,corner_grid_dim(k,2))
enddo
min_grid_val(1)=minval(grid_val(:,1));min_grid_val(2)=minval(grid_val(:,2))
max_grid_val(1)=maxval(grid_val(:,1));max_grid_val(2)=maxval(grid_val(:,2))
min_grid_dim(1)=minval(corner_grid_dim(:,1));min_grid_dim(2)=minval(corner_grid_dim(:,2))
max_grid_dim(1)=maxval(corner_grid_dim(:,1));max_grid_dim(2)=maxval(corner_grid_dim(:,2))
write(unit_logfile,'(A,4i5)') 'Reduced start (x,y) and end (x,y) dimensions', min_grid_dim(1),min_grid_dim(2),max_grid_dim(1),max_grid_dim(2)
write(unit_logfile,'(A,4f16.1)') 'Reduced start (x,y) and end (x,y) ', min_grid_val(1),min_grid_val(2),max_grid_val(1),max_grid_val(2)
dim_start_nc(2)=max(1,min_grid_dim(2)-extra_grids)
dim_start_nc(1)=max(1,min_grid_dim(1)-extra_grids)
dim_end_nc(2)=min(dim_length_nc(2),max_grid_dim(2)+extra_grids)
dim_end_nc(1)=min(dim_length_nc(1),max_grid_dim(1)+extra_grids)
dim_length_nc(2)=dim_end_nc(2)-dim_start_nc(2)+1
dim_length_nc(1)=dim_end_nc(1)-dim_start_nc(1)+1
!write(*,*) 'lon ll',dim_start_nc(1),var2d_nc_temp(lon_index, dim_start_nc(1),dim_start_nc(2))
!write(*,*) 'lon tr',dim_end_nc(1),var2d_nc_temp(lon_index, dim_end_nc(1),dim_end_nc(2))
!write(*,*) 'lat ll',dim_start_nc(2),var2d_nc_temp(lat_index, dim_start_nc(1),dim_start_nc(2))
!write(*,*) 'lat tr',dim_end_nc(2),var2d_nc_temp(lat_index, dim_end_nc(1),dim_end_nc(2))
!write(*,*) dim_length_nc(1:2)
write(unit_logfile,'(A,7i5)') 'Reduced start (x,y), end (x,y) and size (x,y) dimensions after adding extra grids', dim_start_nc(1),dim_start_nc(2),dim_end_nc(1),dim_end_nc(2),dim_length_nc(1),dim_length_nc(2),extra_grids
!stop
deallocate (var2d_nc_dp)
deallocate (var2d_nc_temp)
deallocate (var1d_nc_in)
end subroutine NORTRIP_reduce_meteo_region
!-------------------------------------------------------------------------
subroutine NORTRIP_reduce_meteo_region2(id_nc2)
!Reduces the region to be read
!Requires readingg of the dimensions and projection data pre calculation
!Requires finding max and min of the NORTRIP road files
use NORTRIP_multiroad_index_definitions
use netcdf
implicit none
double precision, allocatable :: var2d_nc2_dp(:,:)
real, allocatable :: var2d_nc2_temp(:,:,:)
real, allocatable :: var1d_nc2_in(:,:)
real min_link_lat,min_link_lon,max_link_lat,max_link_lon
real min_link_y,min_link_x,max_link_y,max_link_x
real corner_link(4,2),grid_val(4,2)
integer corner_grid_dim(4,2)
integer min_grid_dim(2),max_grid_dim(2)
integer i,j,k
integer status_nc !Error message
integer id_nc2
integer dim_id_nc2(num_dims_nc)
integer var_id_nc2(num_var_nc)
real distance
integer :: extra_grids=1 !Extend the selected grid further to deal with the interpolation
real min_grid_val(2),max_grid_val(2)
integer dim_end_nc2(2)
logical :: check_distance=.false.
real x_temp,y_temp
integer i_grid_mid,j_grid_mid
write(unit_logfile,'(a,i)') 'Reducing meteorological region with nc file id: ',id_nc2
!Set to the initial value
dim_start_nc2=1
!Find the max and in of the road link files in lat and lon
min_link_lat=minval(inputdata_rl(lat0_rl_index,:))
min_link_lon=minval(inputdata_rl(lon0_rl_index,:))
max_link_lat=maxval(inputdata_rl(lat0_rl_index,:))
max_link_lon=maxval(inputdata_rl(lon0_rl_index,:))
corner_link(1,1)=min_link_lon;corner_link(1,2)=min_link_lat
corner_link(2,1)=min_link_lon;corner_link(2,2)=max_link_lat
corner_link(3,1)=max_link_lon;corner_link(3,2)=max_link_lat
corner_link(4,1)=max_link_lon;corner_link(4,2)=min_link_lat
!Convert to meteo coordinates
min_link_x=1e36;min_link_y=1e36;max_link_x=-1e36;max_link_y=-1e36
do k=1,size(inputdata_rl,2)
call lb2lambert2_uEMEP(x_temp,y_temp,inputdata_rl(lon0_rl_index,k),inputdata_rl(lat0_rl_index,k),meteo_nc2_projection_attributes)
if (x_temp.lt.min_link_x) min_link_x=x_temp
if (y_temp.lt.min_link_y) min_link_y=y_temp
if (x_temp.gt.max_link_x) max_link_x=x_temp
if (y_temp.gt.max_link_y) max_link_y=y_temp
enddo
corner_link(1,1)=min_link_x;corner_link(1,2)=min_link_y
corner_link(2,1)=min_link_x;corner_link(2,2)=max_link_y
corner_link(3,1)=max_link_x;corner_link(3,2)=max_link_y
corner_link(4,1)=max_link_x;corner_link(4,2)=min_link_y
write(unit_logfile,'(A,4f12.5)') 'Road link min and max lat,lon', min_link_lon,max_link_lon,min_link_lat,max_link_lat
if (.not.allocated(var2d_nc2_dp)) allocate (var2d_nc2_dp(dim_length_nc2(x_index2),dim_length_nc2(y_index2))) !Lat and lon
if (.not.allocated(var2d_nc2_temp)) allocate (var2d_nc2_temp(2,dim_length_nc2(x_index2),dim_length_nc2(y_index2))) !Lat and lon
if (.not.allocated(var1d_nc2_in)) allocate (var1d_nc2_in(2,max(dim_length_nc2(x_index2),dim_length_nc2(y_index2)))) !Lat and lon
!write(*,*) 'HERE1: ',dim_length_nc2
!write(*,*) 'HERE2: ',dim_start_nc2
!Read in the lat and lon positions in the meteo file
!do i=lat_index2,lon_index2
! status_nc = NF90_INQ_VARID (id_nc2, trim(var_name_nc2(i)), var_id_nc2(i))
! !write(*,*) status_nc,trim(var_name_nc(i)),var_id_nc(i)
! if (status_nc.eq.NF90_NOERR) then
! status_nc = NF90_GET_VAR (id_nc2, var_id_nc2(i), var2d_nc2_dp,start=(/dim_start_nc2(1:2)/), count=(/dim_length_nc2(1:2)/));var2d_nc2_temp(i,:,:)=var2d_nc2_dp(:,:)
! endif
! write(unit_logfile,'(A,i3,A,2A,2f16.4)') ' ',status_nc,' ',trim(var_name_nc2(i)),' (min, max): ',minval(var2d_nc2_temp(i,:,:)),maxval(var2d_nc2_temp(i,:,:))
! enddo
do i=x_index2,y_index2
status_nc = NF90_INQ_VARID (id_nc2, trim(dim_name_nc2(i)), var_id_nc2(i))
status_nc = NF90_GET_VAR (id_nc2, var_id_nc2(i), var1d_nc2_in(i,1:dim_length_nc2(i)), start=(/dim_start_nc2(i)/), count=(/dim_length_nc2(i)/))
write(unit_logfile,'(3A,2f12.2)') ' ',trim(dim_name_nc2(i)),' (min, max in km): ' &
,minval(var1d_nc2_in(i,1:dim_length_nc2(i))),maxval(var1d_nc2_in(i,1:dim_length_nc2(i)))
enddo
i_grid_mid=int(dim_length_nc(x_index2)/2)
j_grid_mid=int(dim_length_nc(y_index2)/2)
dgrid_nc2(x_index2)=var1d_nc2_in(x_index2,i_grid_mid)-var1d_nc2_in(x_index2,i_grid_mid-1)
dgrid_nc2(y_index)=var1d_nc2_in(y_index2,j_grid_mid)-var1d_nc2_in(y_index2,j_grid_mid-1)
do k=1,4
!Assumes lambert projection. Does not account for lat lon
!call lb2lambert2_uEMEP(x_temp,y_temp,corner_link(k,1),corner_link(k,2),meteo_nc_projection_attributes)
x_temp=corner_link(k,1);y_temp=corner_link(k,2);
corner_grid_dim(k,1)=1+floor((x_temp-var1d_nc2_in(x_index2,1))/dgrid_nc2(x_index2)+0.5)
corner_grid_dim(k,2)=1+floor((y_temp-var1d_nc2_in(y_index2,1))/dgrid_nc2(y_index2)+0.5)
! write(*,*) ': ',k,corner_grid_dim(k,1),corner_grid_dim(k,2)
! write(*,*) ':: ',x_temp,y_temp,var1d_nc_in(x_index2,1),var1d_nc_in(y_index,1)
! write(*,*) '::: ',dgrid_nc2(x_index2),dgrid_nc2(y_index)
grid_val(k,1)=var1d_nc2_in(x_index2,corner_grid_dim(k,1))
grid_val(k,2)=var1d_nc2_in(y_index2,corner_grid_dim(k,2))
enddo
min_grid_val(1)=minval(grid_val(:,1));min_grid_val(2)=minval(grid_val(:,2))
max_grid_val(1)=maxval(grid_val(:,1));max_grid_val(2)=maxval(grid_val(:,2))
min_grid_dim(1)=minval(corner_grid_dim(:,1));min_grid_dim(2)=minval(corner_grid_dim(:,2))
max_grid_dim(1)=maxval(corner_grid_dim(:,1));max_grid_dim(2)=maxval(corner_grid_dim(:,2))
write(unit_logfile,'(A,4i5)') 'Reduced start (x,y) and end (x,y) dimensions', min_grid_dim(1),min_grid_dim(2),max_grid_dim(1),max_grid_dim(2)
write(unit_logfile,'(A,4f16.1)') 'Reduced start (x,y) and end (x,y) ', min_grid_val(1),min_grid_val(2),max_grid_val(1),max_grid_val(2)
dim_start_nc2(2)=max(1,min_grid_dim(2)-extra_grids)
dim_start_nc2(1)=max(1,min_grid_dim(1)-extra_grids)
dim_end_nc2(2)=min(dim_length_nc2(2),max_grid_dim(2)+extra_grids)
dim_end_nc2(1)=min(dim_length_nc2(1),max_grid_dim(1)+extra_grids)
dim_length_nc2(2)=dim_end_nc2(2)-dim_start_nc2(2)+1
dim_length_nc2(1)=dim_end_nc2(1)-dim_start_nc2(1)+1
!write(*,*) 'lon ll',dim_start_nc(1),var2d_nc2_temp(lon_index2, dim_start_nc(1),dim_start_nc(2))
!write(*,*) 'lon tr',dim_end_nc(1),var2d_nc2_temp(lon_index2, dim_end_nc(1),dim_end_nc(2))
!write(*,*) 'lat ll',dim_start_nc(2),var2d_nc2_temp(lat_index, dim_start_nc(1),dim_start_nc(2))
!write(*,*) 'lat tr',dim_end_nc(2),var2d_nc2_temp(lat_index, dim_end_nc(1),dim_end_nc(2))
!write(*,*) dim_length_nc(1:2)
write(unit_logfile,'(A,7i5)') 'Reduced start (x,y), end (x,y) and size (x,y) dimensions after adding extra grids', dim_start_nc2(1),dim_start_nc2(2),dim_end_nc2(1),dim_end_nc2(2),dim_length_nc2(1),dim_length_nc2(2),extra_grids
!stop
deallocate (var2d_nc2_dp)
deallocate (var2d_nc2_temp)
deallocate (var1d_nc2_in)
end subroutine NORTRIP_reduce_meteo_region2