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NORTRIP_multiroad_read_meteo_netcdf4.f90
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NORTRIP_multiroad_read_meteo_netcdf4.f90
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subroutine NORTRIP_read_meteo_NBV_netcdf4
!Reads in meteo from special files made in the NBV project.
!Does not include the disaggregation of precip and fluxes
use NORTRIP_multiroad_index_definitions
!Update to netcdf 4 and 64 bit in this version 2 of NORTRIP_read_meteo_netcdf
use netcdf
implicit none
!include 'netcdf.inc'
!Local variables
integer status_nc,status_type_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)
character(256) dimname_temp
integer i
integer i_grid_mid,j_grid_mid
real dlat_nc
integer exists
integer new_start_date_input(num_date_index)
logical found_file
character(256) pathname_nc_in,filename_nc_in,filename_alternative_nc_in
double precision, allocatable :: var1d_nc_dp(:)
double precision, allocatable :: var2d_nc_dp(:,:)
double precision, allocatable :: var3d_nc_dp(:,:,:)
real, allocatable :: var2d_nc_re(:,:)
real, allocatable :: var3d_nc_re(:,:,:)
double precision temp_date
double precision date_to_number
integer var_id_nc_projection
write(unit_logfile,'(A)') '================================================================'
write(unit_logfile,'(A)') 'Reading meteorological data (NORTRIP_read_meteo_netcdf v2)'
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
filename_alternative_nc_in=filename_alternative_nc_template
call date_to_datestr_bracket(start_date_input,filename_nc_in,filename_nc)
call date_to_datestr_bracket(start_date_input,filename_alternative_nc_in,filename_alternative_nc)
call date_to_datestr_bracket(start_date_input,pathname_nc_in,pathname_nc)
pathfilename_nc=trim(pathname_nc)//trim(filename_nc)
!Test existence of the filename. If does not exist then try alternative
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)
write(unit_logfile,'(A)') ' Will try 24 hours before.'
!write(*,'(A,A)') ' ERROR: Meteo netcdf file does not exist. Stopping: ', trim(pathfilename_nc)
!Start search back 24 hours
new_start_date_input=start_date_input
found_file=.false.
do i=1,1
!call incrtm(-24,new_start_date_input(1),new_start_date_input(2),new_start_date_input(3),new_start_date_input(4))
temp_date=date_to_number(new_start_date_input)
call number_to_date(temp_date-1.,new_start_date_input)
!write(*,*) i,new_start_date_input(1:4)
call date_to_datestr_bracket(new_start_date_input,filename_nc_in,filename_nc)
call date_to_datestr_bracket(new_start_date_input,pathname_nc_in,pathname_nc)
pathfilename_nc=trim(pathname_nc)//trim(filename_nc)
write(unit_logfile,'(A,A)') ' Trying: ', trim(pathfilename_nc)
inquire(file=trim(pathfilename_nc),exist=exists)
if (exists) then
found_file=.true.
exit
else
found_file=.false.
endif
enddo
if (.not.found_file) then
!write(unit_logfile,'(A,A)') ' ERROR: Meteo netcdf file still does not exist: ', trim(pathfilename_nc)
write(unit_logfile,'(A,A)') ' WARNING: Meteo netcdf file still does not exist: ', trim(pathfilename_nc)
!write(unit_logfile,'(A)') ' STOPPING'
!write(*,'(A,A)') ' ERROR: Meteo netcdf file does not exist. Stopping: ', trim(pathfilename_nc)
!stop 8
else
write(unit_logfile,'(A,A)') ' Found earlier meteo netcdf file: ', trim(pathfilename_nc)
endif
endif
if (.not.found_file) then
write(unit_logfile,'(A,A)') ' WARNING: Meteo netcdf file does not exist. Trying alternative file name ', trim(pathfilename_nc)
pathfilename_nc=trim(pathname_nc)//trim(filename_alternative_nc)
!Test existence of the filename. If does not exist then try alternative
inquire(file=trim(pathfilename_nc),exist=exists)
if (.not.exists) then
write(unit_logfile,'(A,A)') ' WARNING: Alternative meteo netcdf file does not exist: ', trim(pathfilename_nc)
write(unit_logfile,'(A)') ' Will try 24 hours before.'
!write(*,'(A,A)') ' ERROR: Meteo netcdf file does not exist. Stopping: ', trim(pathfilename_nc)
!Start search back 24 hours
new_start_date_input=start_date_input
found_file=.false.
do i=1,1
!call incrtm(-24,new_start_date_input(1),new_start_date_input(2),new_start_date_input(3),new_start_date_input(4))
temp_date=date_to_number(new_start_date_input)
call number_to_date(temp_date-1.,new_start_date_input)
!write(*,*) i,new_start_date_input(1:4)
call date_to_datestr_bracket(start_date_input,filename_alternative_nc_in,filename_alternative_nc)
call date_to_datestr_bracket(new_start_date_input,pathname_nc_in,pathname_nc)
pathfilename_nc=trim(pathname_nc)//trim(filename_alternative_nc)
write(unit_logfile,'(A,A)') ' Trying: ', trim(pathfilename_nc)
inquire(file=trim(pathfilename_nc),exist=exists)
if (exists) then
found_file=.true.
exit
else
found_file=.false.
endif
enddo
if (.not.found_file) then
write(unit_logfile,'(A,A)') ' ERROR: Meteo netcdf file still does not exist: ', trim(pathfilename_nc)
write(unit_logfile,'(A)') ' STOPPING'
!write(*,'(A,A)') ' ERROR: Meteo netcdf file does not exist. Stopping: ', trim(pathfilename_nc)
stop 8
else
write(unit_logfile,'(A,A)') ' Found earlier meteo netcdf file: ', trim(pathfilename_nc)
endif
endif
endif
!Open the netcdf file for reading
write(unit_logfile,'(2A)') ' Opening netcdf meteo file: ',trim(pathfilename_nc)
!status_nc = NF_OPEN (pathfilename_nc, NF_NOWRITE, id_nc)
status_nc = NF90_OPEN (pathfilename_nc, nf90_nowrite, id_nc)
!if (status_nc .NE. NF_NOERR) write(unit_logfile,'(A,I)') 'ERROR opening netcdf file: ',status_nc
if (status_nc .NE. NF90_NOERR) write(unit_logfile,'(A,I)') 'ERROR opening netcdf file: ',status_nc
!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
!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))
status_nc = NF90_INQUIRE_DIMENSION (id_nc,dim_id_nc(time_index),dimname_temp,dim_length_nc(time_index))
write(unit_logfile,'(A,3I)') ' Size of dimensions (x,y,t): ',dim_length_nc
!Allocate the nc arrays for reading
allocate (var1d_time_nc(dim_length_nc(time_index)) )!x and y and time maximum dimmensions
allocate (var1d_nc(num_dims_nc,maxval(dim_length_nc))) !x and y and time maximum dimmensions
allocate (var1d_nc_dp(maxval(dim_length_nc))) !x and y and time maximum dimmensions
allocate (var3d_nc(num_var_nc,dim_length_nc(x_index),dim_length_nc(y_index),dim_length_nc(time_index)))
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)))
allocate (var2d_nc_dp(dim_length_nc(x_index),dim_length_nc(y_index))) !Lat and lon
allocate (var2d_nc_re(dim_length_nc(x_index),dim_length_nc(y_index))) !Lat and lon
allocate (var3d_nc_re(dim_length_nc(x_index),dim_length_nc(y_index),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 = NF_GET_VARA_REAL (id_nc, var_id_nc(i), dim_start_nc(i), dim_length_nc(i), var1d_nc(i,:))
!status_nc = NF90_GET_VAR (id_nc, var_id_nc(i),var1d_nc(i,1:dim_length_nc(i)),start=(/dim_start_nc(i)/),count=(/dim_length_nc(i)/))!;var1d_nc(1:dim_length_nc(i),i)=real(var1d_nc_dp(1:dim_length_nc(i)))
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)/));var1d_nc(i,1:dim_length_nc(i))=real(var1d_nc_dp(1:dim_length_nc(i)))
if (i.eq.time_index) then
var1d_time_nc(:)=var1d_nc_dp(1:dim_length_nc(time_index))
write(unit_logfile,'(3A,2i12)') ' ',trim(dim_name_nc(i)),' (min, max in hours): ' &
,minval(int((var1d_nc(i,1:dim_length_nc(i))-var1d_nc(i,dim_start_nc(i)))/3600.+.5)+1) &
,maxval(int((var1d_nc(i,1:dim_length_nc(i))-var1d_nc(i,dim_start_nc(i)))/3600.+.5)+1)
else
write(unit_logfile,'(3A,2f12.2)') ' ',trim(dim_name_nc(i)),' (min, max in km): ' &
,minval(var1d_nc(i,1:dim_length_nc(i))/1000.),maxval(var1d_nc(i,1:dim_length_nc(i))/1000.)
endif
enddo
!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,var_id_nc(i),trim(var_name_nc(i))
!write(*,*) 'Status1: ',dim_start_nc
!write(*,*) 'Status1: ',dim_length_nc
if (status_nc.ge.0) then
status_type_nc = nf90_inquire_variable(id_nc, var_id_nc(i), xtype=xtype_nc(i))
if (i.eq.lat_index.or.i.eq.lon_index) then
!write(*,*) trim(var_name_nc(i)),xtype_nc(i), trim(meteo_data_type)
if (xtype_nc(i).eq.NF90_DOUBLE) 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(i,:,:)=real(var2d_nc_dp)
else
status_nc = NF90_GET_VAR (id_nc, var_id_nc(i), var2d_nc_re, start=(/dim_start_nc(1:2)/), count=(/dim_length_nc(1:2)/));var2d_nc(i,:,:)=var2d_nc_re
endif
write(unit_logfile,'(3A,2f16.4)') ' ',trim(var_name_nc(i)),' (min, max): ',minval(var2d_nc(i,:,:)),maxval(var2d_nc(i,:,:))
else
!write(*,*) trim(var_name_nc(i)),xtype_nc(i), trim(meteo_data_type)
if (xtype_nc(i).eq.NF90_DOUBLE) then
status_nc = NF90_GET_VAR (id_nc, var_id_nc(i), var3d_nc_dp, start=(/dim_start_nc/), count=(/dim_length_nc/));var3d_nc(i,:,:,:)=real(var3d_nc_dp)
else
status_nc = NF90_GET_VAR (id_nc, var_id_nc(i), var3d_nc_re, start=(/dim_start_nc/), count=(/dim_length_nc/));var3d_nc(i,:,:,:)=var3d_nc_re
endif
write(unit_logfile,'(3A,2f16.2)') ' ',trim(var_name_nc(i)),' (min, max): ',minval(var3d_nc(i,:,:,:)),maxval(var3d_nc(i,:,:,:))
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.
do i=1,num_var_nc
if (i.eq.precip_index.or.i.eq.precip_snow_index) then
where (var3d_nc(i,:,:,:).lt.precip_cutoff) var3d_nc(i,:,:,:)=0.
endif
enddo
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
!Calculate angle difference between North and the Model Y direction based on the middle grids
!Not correct
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) 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
deallocate (var3d_nc_re)
deallocate (var2d_nc_re)
deallocate (var3d_nc_dp)
deallocate (var2d_nc_dp)
deallocate (var1d_nc_dp)
end subroutine NORTRIP_read_meteo_NBV_netcdf4