forked from DOI-USGS/volcano-ash3d-metreader
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MetReader_GRIB.f90
1998 lines (1822 loc) · 90.5 KB
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MetReader_GRIB.f90
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!##############################################################################
!##############################################################################
!##############################################################################
!##############################################################################
!
! MR_Read_Met_DimVars_GRIB
!
! Called once from MR_Read_Met_DimVars
!
! This subroutine reads the variable and dimension IDs, and fills the
! coordinate dimension variables
!
! After this subroutine completes, the following variables will be set:
! All the projection parameters of NWP grid
! Met_dim_names, Met_var_GRIB_names, Met_var_conversion_factor, Met_var_IsAvailable
! The lengths of all the dimensions of the file
! p_fullmet_sp (converted to Pa)
! x_fullmet_sp, y_fullmet_sp
! IsLatLon_MetGrid, IsGlobal_MetGrid, IsRegular_MetGrid
!
!##############################################################################
subroutine MR_Read_Met_DimVars_GRIB
use MetReader
use eccodes
use projection
implicit none
integer, parameter :: sp = 4 ! single precision
integer, parameter :: dp = 8 ! double precision
integer, parameter :: MAXGRIBREC = 10000
integer :: i, j, k
integer :: ir
real(kind=sp) :: xLL_fullmet
real(kind=sp) :: yLL_fullmet
real(kind=sp) :: xUR_fullmet
real(kind=sp) :: yUR_fullmet
integer :: ifile
integer :: igrib
integer :: iw
integer,dimension(MAXGRIBREC) :: igribv
integer :: nSTAT
integer :: ivar,iivar
integer :: idx
integer :: maxdimlen
character(len=130) :: grib_file_path
integer(kind=4) :: iv_discpl
integer(kind=4) :: iv_paramC
integer(kind=4) :: iv_paramN
integer(kind=4) :: iv_typeSf
!integer(kind=4) :: iv_Table
character(len=3) :: iv_typeSfc
integer(kind=4) :: numberOfPoints
integer(kind=4) :: dum_int
real(kind=8) :: dum_dp
!character(len=19) :: dum_str
character(len=20) :: dum_str
real(kind=dp) :: x_start,y_start
real(kind=dp) :: Lon_start,Lat_start
real(kind=dp) :: Lon_end,Lat_end
!real(kind=dp),dimension(:),allocatable :: lats,lons,values
real(kind=dp),dimension(:),allocatable :: values
real(kind=dp), parameter :: tol = 1.0e-3_dp
integer(kind=4) :: typeOfFirstFixedSurface
integer :: count1=0
! Stores values of keys read from grib file
character(len=6) :: grb_shortName
character(len=36):: grb_longName
character(len=4) :: grb_typeSfc
integer(kind=4) :: grb_discipline
integer(kind=4) :: grb_parameterCategory
integer(kind=4) :: grb_parameterNumber
integer(kind=4) :: grb_Table
integer(kind=4) :: grb_level
integer(kind=4) :: grb_scaledValueOfFirstFixedSurface
integer(kind=4),dimension(MR_MAXVARS,100) :: zlev_dum ! This will hold the z-levels, up to 100
integer(kind=4),dimension(MR_MAXVARS) :: zcount ! This will hold the length of the z-coord
logical :: Check
logical :: FoundOldDim
logical :: IsTruncatedDim
logical :: ReadGrid
integer(kind=4) :: kk,tmp1
!integer :: stat
logical :: IsNewLevel
integer :: iz
if(MR_VERB.ge.1)then
write(MR_global_production,*)"--------------------------------------------------------------------------------"
write(MR_global_production,*)"---------- MR_Read_Met_DimVars_GRIB ----------"
write(MR_global_production,*)"--------------------------------------------------------------------------------"
endif
if(MR_iwind.eq.5)then
write(MR_global_error,*)&
"MR ERROR : ",&
"GRIB reader not implemented for multi-timestep files."
write(MR_global_error,*)&
" iwind=5 files are all multi-step"
stop 1
else
!---------------------------------------------------------------------------------
! Start of block for all non-iwind=5 and non-iwf=50
! This is where the Netcdf and Grib subroutines can be compared
!
! Checking for dimension length and values for x,y,t,p
! Assume all files have the same format
! Note: you can inspect the grib header using grib_dump tmp.grib2 > header.txt
write(MR_global_production,*)&
"Opening grib file to find version number"
iw = 1
call codes_open_file(ifile,trim(ADJUSTL(MR_windfiles(iw))),'R',nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_open_file ")
call codes_new_from_file(ifile,igrib,CODES_PRODUCT_GRIB,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_new_from_file ")
call codes_get(igrib,'editionNumber',MR_GRIB_Version,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get editionNumber ")
call codes_release(igrib,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_release ")
call codes_close_file(ifile,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_close_file ")
endif
write(MR_global_production,*)"Grib version = ",MR_GRIB_Version
!---------------------------------------------------------------------------------
! Checking for dimension length and values for x,y,t,p
! Assume all files have the same format
maxdimlen = 0
! Loop through all the grib messages,
! If we find a message that matches a variable criteria, then log the level to
! a dummy array.
! Finally sort the pressure values and evaluate the distinct pressure coordinates
grib_file_path = adjustl(trim(MR_windfiles(1)))
call codes_open_file(ifile,grib_file_path,'R',nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_open_file ")
count1=1
call codes_new_from_file(ifile,igribv(count1),CODES_PRODUCT_GRIB,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_new_from_file ")
do while (nSTAT/=GRIB_END_OF_FILE)
count1=count1+1
if (count1.gt.MAXGRIBREC) then
write(MR_global_error,*)"ERROR: too many grib messages"
write(MR_global_error,*)" current limit set to ",MAXGRIBREC
stop 1
endif
call codes_new_from_file(ifile,igribv(count1),CODES_PRODUCT_GRIB,nSTAT)
enddo
count1=count1-1
zcount(:) = 0
zlev_dum(:,:) = 0
do ir = 1,count1
if(ir.eq.1)then
! For the first record, get the x,y grid info
ReadGrid = .false.
call codes_get(igribv(ir),'Ni',nx_fullmet,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get Ni ")
call codes_get(igribv(ir),'Nj',ny_fullmet,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get Nj ")
allocate(x_fullmet_sp(0:nx_fullmet+1))
allocate(y_fullmet_sp(ny_fullmet))
allocate(MR_dx_met(nx_fullmet))
allocate(MR_dy_met(ny_fullmet))
call codes_get(igribv(ir),'gridType',dum_str,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get gridType ")
call codes_get(igribv(ir),'latitudeOfFirstGridPointInDegrees',dum_dp,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get latitudeOfFirstGridPointInDegrees ")
Lat_start = dum_dp
call codes_get(igribv(ir),'longitudeOfFirstGridPointInDegrees',dum_dp,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get longitudeOfFirstGridPointInDegrees ")
Lon_start = dum_dp
! Check for end lat/lon in order to determine if either coordinate is
! inverted
call codes_get(igribv(ir),'latitudeOfLastGridPointInDegrees',dum_dp,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)then
call MR_GRIB_check_status(nSTAT,0,"codes_get latitudeOfLastGridPointInDegrees ")
! assume it is not inverted
y_inverted = .false.
else
Lat_end = dum_dp
if(Lat_start.gt.Lat_end)then
y_inverted = .true.
else
y_inverted = .false.
endif
endif
call codes_get(igribv(ir),'longitudeOfLastGridPointInDegrees',dum_dp,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)then
call MR_GRIB_check_status(nSTAT,0,"codes_get longitudeOfLastGridPointInDegrees ")
! assume it is not inverted
x_inverted = .false.
else
Lon_end = dum_dp
if(Lon_start.gt.Lon_end)then
x_inverted = .true.
else
x_inverted = .false.
endif
endif
dum_int = 0
Met_Re = 6371.229_8
call codes_get(igribv(ir),'shapeOfTheEarth',dum_int,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get shapeOfTheEarth ")
if (dum_int.eq.0)then
! 0 Earth assumed spherical with radius = 6,367,470.0 m
Met_Re = 6367.470_8
elseif(dum_int.eq.1)then
! 1 Earth assumed spherical with radius specified by data producer
! Try to read the radius of earth
! For now, just assign the default
Met_Re = 6371.229_8
elseif(dum_int.eq.2)then
! 2 Earth assumed oblate spheroid with size as determined by IAU in 1965
! (major axis = 6,378,160.0 m, minor axis = 6,356,775.0 m, f = 1/297.0)
Met_Re = 6371.229_8
elseif(dum_int.eq.3)then
! 3 Earth assumed oblate spheroid with major and minor axes specified by data producer
Met_Re = 6371.229_8
elseif(dum_int.eq.4)then
! 4 Earth assumed oblate spheroid as defined in IAG-GRS80 model
! (major axis = 6,378,137.0 m, minor axis = 6,356,752.314 m, f = 1/298.257222101)
Met_Re = 6371.229_8
elseif(dum_int.eq.5)then
! 5 Earth assumed represented by WGS84 (as used by ICAO since 1998)
Met_Re = 6371.229_8
elseif(dum_int.eq.6)then
! 6 Earth assumed spherical with radius of 6,371,229.0 m
Met_Re = 6371.229_8
else
! 7-191 Reserved
! 192- 254 Reserved for local use
Met_Re = 6371.229_8
endif
if(index(dum_str,'regular_ll').ne.0)then
IsLatLon_MetGrid = .true.
!Lat_start = y_start
!Lon_start = x_start
y_start = Lat_start
x_start = Lon_start
call codes_get(igribv(ir),'numberOfPoints',numberOfPoints,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get numberOfPoints ")
allocate(values(numberOfPoints))
call codes_get(igribv(ir),'values',values,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get values ")
ReadGrid = .true.
deallocate(values)
!call codes_get(igribv(ir),'latitudeOfLastGridPointInDegrees',dum_dp,nSTAT)
!if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get latitudeOfLastGridPointInDegrees ")
!if(Lat_start.gt.dum_dp)then
! y_inverted = .true.
!else
! y_inverted = .false.
!endif
!call codes_get(igribv(ir),&
! 'longitudeOfLastGridPointInDegrees',dum_dp,nSTAT)
!if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get longitudeOfLastGridPointInDegrees ")
!if(Lon_start.gt.dum_dp)then
! x_inverted = .true.
!else
! x_inverted = .false.
!endif
call codes_get(igribv(ir),'iDirectionIncrementInDegrees',dum_dp,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get iDirectionIncrementInDegrees ")
dx_met_const = real(dum_dp,kind=4)
call codes_get(igribv(ir),'jDirectionIncrementInDegrees',dum_dp,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get jDirectionIncrementInDegrees ")
dy_met_const = real(dum_dp,kind=4)
write(MR_global_production,*)"Setting x grid starting at",Lon_start
write(MR_global_production,*)"with a spacing of ",dx_met_const
do i=1,nx_fullmet
x_fullmet_sp(i) = real(Lon_start,kind=sp)+ &
(i-1)* dx_met_const
enddo
write(MR_global_production,*)"Setting y grid starting at",Lat_start
write(MR_global_production,*)"with a spacing of ",dy_met_const
if(y_inverted)then
do j = 1,ny_fullmet
y_fullmet_sp(j) = real(y_start - (j-1)*dy_met_const,kind=sp)
enddo
else
do j = 1,ny_fullmet
y_fullmet_sp(j) = real(y_start + (j-1)*dy_met_const,kind=sp)
enddo
endif
!do j=1,ny_fullmet
! y_fullmet_sp(j) = real(Lat_start,kind=sp)+ &
! (j-1)* dy_met_const
!enddo
x_fullmet_sp(0) = x_fullmet_sp(1)-dx_met_const
x_fullmet_sp(nx_fullmet+1) = x_fullmet_sp(nx_fullmet)+dx_met_const
elseif(index(dum_str,'regular_gg').ne.0)then
IsLatLon_MetGrid = .true.
!Lat_start = y_start
!Lon_start = x_start
y_start = Lat_start
x_start = Lon_start
call codes_get(igribv(ir),'numberOfPoints',numberOfPoints,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get numberOfPoints ")
allocate(values(numberOfPoints))
call codes_get(igribv(ir),'values',values,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get values ")
write(MR_global_error,*)&
"ERROR: Need to fix grid reading for gg grids."
stop 1
ReadGrid = .true.
deallocate(values)
!call codes_get(igribv(ir),'latitudeOfLastGridPointInDegrees',dum_dp,nSTAT)
!if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get latitudeOfLastGridPointInDegrees ")
!if(Lat_start.gt.dum_dp)then
! y_inverted = .true.
!else
! y_inverted = .false.
!endif
!call codes_get(igribv(ir),&
! 'longitudeOfLastGridPointInDegrees',dum_dp,nSTAT)
!if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get longitudeOfLastGridPointInDegrees ")
!if(Lon_start.gt.dum_dp)then
! x_inverted = .true.
!else
! x_inverted = .false.
!endif
x_fullmet_sp(0) = x_fullmet_sp(nx_fullmet)-360.0_sp
x_fullmet_sp(nx_fullmet+1) = x_fullmet_sp(1)+360.0_sp
elseif(index(dum_str,'polar_stereographic').ne.0)then
IsLatLon_MetGrid = .false.
Met_iprojflag = 1
call codes_get(igribv(ir),'orientationOfTheGridInDegrees',dum_dp,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get orientationOfTheGridInDegrees ")
Met_lam0 = dum_dp
Met_phi0 = 90.0_8
Met_phi1 = 90.0_8
Met_k0 = 0.933_8
Met_Re = 6371.229_8
elseif(index(dum_str,'albers').ne.0)then
IsLatLon_MetGrid = .false.
Met_iprojflag = 2
write(MR_global_error,*)&
"MR ERROR: Alber Equal Area not implemented"
stop 1
elseif(index(dum_str,'UTM').ne.0)then
IsLatLon_MetGrid = .false.
Met_iprojflag = 3
write(MR_global_error,*)"MR ERROR: UTM not implemented"
stop 1
elseif(index(dum_str,'lambert').ne.0)then
IsLatLon_MetGrid = .false.
Met_iprojflag = 4
call codes_get(igribv(ir),'LoVInDegrees',dum_dp,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get LoVInDegrees ")
Met_lam0 = dum_dp
call codes_get(igribv(ir),'LaDInDegrees',dum_dp,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get LaDInDegrees ")
Met_phi0 = dum_dp
call codes_get(igribv(ir),'Latin1InDegrees',dum_dp,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get Latin1InDegrees ")
Met_phi1 = dum_dp
call codes_get(igribv(ir),'Latin2InDegrees',dum_dp,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get Latin2InDegrees ")
Met_phi2 = dum_dp
Met_k0 = 0.933_8
Met_Re = 6371.229_8
elseif(index(dum_str,'mercator').ne.0)then
IsLatLon_MetGrid = .false.
Met_iprojflag = 5
Met_lam0 = Lon_start
call codes_get(igribv(ir),'LaDInDegrees',dum_dp,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get LaDInDegrees ")
Met_phi0 = dum_dp
Met_k0 = 0.933_8
Met_Re = 6371.229_8
else
write(MR_global_error,*)&
'MR ERROR: Cannot determine the projection from the GRIB file.'
stop 1
endif
! Override for the case of NARR
if (MR_iwindformat.eq.3)Met_Re = 6367.470_8
if(.not.IsLatLon_MetGrid)then
call codes_get(igribv(ir),'DxInMetres',dum_int,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,0,"codes_get DxInMetres ")
if(nSTAT.ne.0)then
call codes_get(igribv(ir),'DiInMetres',dum_int,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get DiInMetres ")
endif
dx_met_const = real(dum_int,kind=4)/1000.0_sp
call codes_get(igribv(ir),'DyInMetres',dum_int,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,0,"codes_get DyInMetres ")
if(nSTAT.ne.0)then
call codes_get(igribv(ir),'DjInMetres',dum_int,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get DjInMetres ")
endif
dy_met_const = real(dum_int,kind=4)/1000.0_sp
call PJ_proj_for(Lon_start,Lat_start, Met_iprojflag, &
Met_lam0,Met_phi0,Met_phi1,Met_phi2,Met_k0,Met_Re, &
x_start,y_start)
write(*,*)Met_iprojflag,Met_lam0,Met_phi0,Met_phi1,Met_phi2,Met_k0,Met_Re
write(MR_global_production,*)"Getting start coordinate for ",Lon_start,Lat_start
write(MR_global_production,*)" Projected coordinate = ",x_start,y_start
endif
if(.not.ReadGrid)then
write(MR_global_production,*)"Setting x grid starting at",x_start
write(MR_global_production,*)"with a spacing of ",dx_met_const
do i = 0,nx_fullmet+1
x_fullmet_sp(i) = real(x_start + (i-1)*dx_met_const,kind=sp)
enddo
write(MR_global_production,*)"Setting y grid starting at",y_start
write(MR_global_production,*)"with a spacing of ",dy_met_const
if(y_inverted)then
do i = 1,ny_fullmet
y_fullmet_sp(i) = real(y_start - (i-1)*dy_met_const,kind=sp)
enddo
else
do i = 1,ny_fullmet
y_fullmet_sp(i) = real(y_start + (i-1)*dy_met_const,kind=sp)
enddo
endif
ReadGrid = .true.
endif
do i = 1,nx_fullmet
MR_dx_met(i) = x_fullmet_sp(i+1)-x_fullmet_sp(i)
enddo
do i = 1,ny_fullmet-1
MR_dy_met(i) = y_fullmet_sp(i+1)-y_fullmet_sp(i)
enddo
MR_dy_met(ny_fullmet) = MR_dy_met(ny_fullmet-1)
! We need to check if this is a regular grid
IsRegular_MetGrid = .true.
do i = 1,nx_fullmet-1
if(abs(MR_dx_met(i+1)-MR_dx_met(i)).gt.tol*MR_dx_met(i))then
IsRegular_MetGrid = .false.
endif
enddo
do i = 1,ny_fullmet-1
if(abs(MR_dy_met(i+1)-MR_dy_met(i)).gt.tol*MR_dy_met(i))then
IsRegular_MetGrid = .false.
endif
enddo
endif ! count1.eq.1
! End of block reading the first record for grid info
if(MR_GRIB_Version.eq.1)then
call codes_get(igribv(ir),'indicatorOfTypeOfLevel',grb_typeSfc,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get indicatorOfTypeOfLevel ")
! for populating z-levels, we are only concerned with specific level types
if(index(grb_typeSfc,'pl').ne.0.or. & ! Isobaric surface (Pa)
index(grb_typeSfc,'105').ne.0)then ! Specified height level above ground (m)
call codes_get(igribv(ir),'indicatorOfParameter',grb_parameterNumber,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get indicatorOfParameter ")
call codes_get(igribv(ir),'table2Version',grb_Table,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get table2Version ")
! Loop through all the variables and see if we have a match with this grib record
do ivar = 1,MR_MAXVARS
if (.not.Met_var_IsAvailable(ivar)) cycle
iv_ParamN = Met_var_GRIB1_Param(ivar)
iv_typeSfc = Met_var_GRIB1_St(ivar)
if(iv_ParamN.eq.grb_parameterNumber.and. &
iv_typeSfc.eq.grb_typeSfc)then
! This is one we are tracking, log the level
call codes_get(igribv(ir),'level',grb_level,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get level ")
zcount(ivar) = zcount(ivar) + 1
zlev_dum(ivar,zcount(ivar)) = grb_level * 100
endif
enddo
endif
elseif(MR_GRIB_Version.eq.2)then
typeOfFirstFixedSurface = -1
grb_discipline = -1
grb_parameterCategory = -1
grb_parameterNumber = -1
grb_scaledValueOfFirstFixedSurface = -1
call codes_get(igribv(ir),'typeOfFirstFixedSurface', typeOfFirstFixedSurface,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get typeOfFirstFixedSurface ")
! for populating z-levels, we are only concerned with specific level types
if(typeOfFirstFixedSurface.eq.100.or. & ! Isobaric surface (Pa)
typeOfFirstFixedSurface.eq.103.or. & ! Specified height level above ground (m)
typeOfFirstFixedSurface.eq.106)then ! Depth below land surface (m)
call codes_get(igribv(ir),'discipline', grb_discipline,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get discipline ")
call codes_get(igribv(ir),'parameterCategory', grb_parameterCategory,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get parameterCategory ")
call codes_get(igribv(ir),'parameterNumber', grb_parameterNumber,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get parameterNumber ")
call codes_get(igribv(ir),'shortName', grb_shortName,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get shortName ")
call codes_get(igribv(ir),'cfNameECMF', grb_longName,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get cfNameECMF ")
call codes_get(igribv(ir),&
'scaledValueOfFirstFixedSurface',&
grb_scaledValueOfFirstFixedSurface,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get scaledValueOfFirstFixedSurface ")
! Loop through all the variables and see if we have a match with this grib record
do ivar = 1,MR_MAXVARS
if (.not.Met_var_IsAvailable(ivar)) cycle
iv_discpl = Met_var_GRIB2_DPcPnSt(ivar,1)
iv_paramC = Met_var_GRIB2_DPcPnSt(ivar,2)
iv_paramN = Met_var_GRIB2_DPcPnSt(ivar,3)
iv_typeSf = Met_var_GRIB2_DPcPnSt(ivar,4)
if(iv_discpl.eq.grb_discipline.and. &
iv_paramC.eq.grb_parameterCategory.and.&
iv_paramN.eq.grb_parameterNumber.and. &
iv_typeSf.eq.typeOfFirstFixedSurface)then
! This is one we are tracking, log the level
call codes_get(igribv(ir),&
'scaledValueOfFirstFixedSurface',&
grb_scaledValueOfFirstFixedSurface,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get scaledValueOfFirstFixedSurface ")
! Double-check that this isn't a duplicate record
IsNewLevel = .true.
do iz = 1,zcount(ivar)
if (zlev_dum(ivar,iz).eq.grb_scaledValueOfFirstFixedSurface) then
IsNewLevel = .false.
exit
endif
enddo
if (IsNewLevel) then
zcount(ivar) = zcount(ivar) + 1
zlev_dum(ivar,zcount(ivar)) = grb_scaledValueOfFirstFixedSurface
endif
endif
enddo
endif
endif !MR_GRIB_Version.eq.1 or .eq.2
enddo
do ir = 1,count1
call codes_release(igribv(ir),nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_release ")
enddo
call codes_close_file(ifile,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_close_file ")
maxdimlen = maxval(zcount(:))
nlev_coords_detected = 1
Met_var_zdim_idx(:) = 0
Met_var_zdim_idx(1) = 1
do ivar = 2,MR_MAXVARS
if (.not.Met_var_IsAvailable(ivar)) cycle
FoundOldDim = .false.
do iivar = 1,ivar-1
if (zcount(iivar).eq.zcount(ivar))then ! This check for a different coordinate is
! solely on the size of the dimension.
FoundOldDim = .true.
Met_var_zdim_idx(ivar) = Met_var_zdim_idx(iivar)
exit
endif
enddo
if(.not.FoundOldDim)then
nlev_coords_detected = nlev_coords_detected + 1
Met_var_zdim_idx(ivar) = nlev_coords_detected
endif
enddo
! The V part of velocity is typically the second of a multi-component record and the above code
! does not catch it. Assume V has the same characteristics as U and copy U
! V @ isobaric
zcount(3) = zcount(2)
zlev_dum(3,1:zcount(3)) = zlev_dum(2,1:zcount(2))
Met_var_zdim_idx(3) = Met_var_zdim_idx(2)
! V @ 10 m
zcount(12) = zcount(11)
zlev_dum(12,1:zcount(12)) = zlev_dum(11,1:zcount(11))
Met_var_zdim_idx(12) = Met_var_zdim_idx(11)
! We have all the level dimension names and dim_ids; now we need to get the sizes
allocate(nlevs_fullmet(nlev_coords_detected))
allocate(levs_code(nlev_coords_detected))
allocate(levs_fullmet_sp(nlev_coords_detected,maxdimlen))
do ivar = 1,MR_MAXVARS
if (.not.Met_var_IsAvailable(ivar)) cycle
! Check if this variable has a z-dimension (pressure, height, depth, etc.)
if(Met_var_zdim_idx(ivar).gt.0)then
idx = Met_var_zdim_idx(ivar)
nlevs_fullmet(idx) = zcount(ivar)
! Check that the pressure level is monotonically increasing
Check=.true.
do k=1,zcount(ivar)-1
if(zlev_dum(ivar,k).gt.zlev_dum(ivar,k+1)) Check=.false.
enddo
if (Check)then
levs_fullmet_sp(idx,1:nlevs_fullmet(idx)) = &
real(zlev_dum(ivar,1:nlevs_fullmet(idx)),kind=sp)
z_inverted = .true.
! Pressure is expected to be from the bottom up so invert
allocate(p_fullmet_sp(nlevs_fullmet(idx)))
do k=1,zcount(ivar)
p_fullmet_sp(k) = levs_fullmet_sp(idx,nlevs_fullmet(idx)+1-k)
enddo
levs_fullmet_sp(idx,1:nlevs_fullmet(idx)) = p_fullmet_sp(1:nlevs_fullmet(idx))
deallocate(p_fullmet_sp)
else
! Need to first sort pressure variable here
! Using insertion sort on p321 of Numerical Recipes
do k=2,nlevs_fullmet(idx)
tmp1 = zlev_dum(ivar,k)
do kk=k-1,1,-1
if (zlev_dum(ivar,kk).ge.tmp1) goto 101
zlev_dum(ivar,kk+1) = zlev_dum(ivar,kk)
enddo
kk=0
101 zlev_dum(ivar,kk+1) = tmp1
enddo
levs_fullmet_sp(idx,1:nlevs_fullmet(idx)) = &
real(zlev_dum(ivar,1:nlevs_fullmet(idx)),kind=sp)
z_inverted = .false.
endif
endif
enddo
! Now log all pressure coordinates as one-to-one, truncated, or interrupted
levs_code(1:nlev_coords_detected) = 0
levs_code(1) = 1 ! The first var checked (GPH) should have a one-to-one mapping
! Check how each of the pressure coordinates map onto the GPH grid
if (nlev_coords_detected.gt.1)then
! Only bother if there are multiple pressure coordinates
do idx = 2,nlev_coords_detected
if (nlevs_fullmet(idx).gt.nlevs_fullmet(1))then
! This coordinate has more values than the GPH pressure coordinate
levs_code(idx) = 4
elseif (nlevs_fullmet(idx).lt.nlevs_fullmet(1))then
! It there are fewer levels, check if this is a truncated coordinate (code = 2)
! or one with missing levels that requires interpolation (code = 3)
IsTruncatedDim = .true.
do i=1,nlevs_fullmet(idx)
if(abs(levs_fullmet_sp(idx,i)-levs_fullmet_sp(1,i)).gt.MR_EPS_SMALL)then
IsTruncatedDim = .false.
exit
endif
enddo
if(IsTruncatedDim)then
levs_code(idx) = 2
else
levs_code(idx) = 3
endif
else
! This coordinate has the same dimension as the GPH pressure coordinate.
! They are probably the same
levs_code(idx) = 1
endif
enddo
endif
write(MR_global_production,*)" Found these levels"
write(MR_global_production,*)&
" VaribleID LevelIdx dimID length"
do ivar = 1,MR_MAXVARS
if (Met_var_IsAvailable(ivar))then
if(Met_var_zdim_idx(ivar).eq.0)then
write(MR_global_production,*)ivar,Met_var_zdim_idx(ivar),0,0,&
trim(adjustl(Met_var_GRIB_names(ivar)))
else
write(MR_global_production,*)ivar,Met_var_zdim_idx(ivar),0,&
nlevs_fullmet(Met_var_zdim_idx(ivar)),&
trim(adjustl(Met_var_GRIB_names(ivar)))
endif
endif
enddo
! Now assign these levels to the working arrays
! Geopotential is the first variable checked, use this for np_fullmet
nt_fullmet = 1
np_fullmet = nlevs_fullmet(Met_var_zdim_idx(1)) ! Assign fullmet the length of H,U,V
allocate(p_fullmet_sp(np_fullmet))
idx = Met_var_zdim_idx(1)
p_fullmet_sp(1:nlevs_fullmet(idx)) = levs_fullmet_sp(idx,1:nlevs_fullmet(idx))
MR_Max_geoH_metP_predicted = MR_Z_US_StdAtm(p_fullmet_sp(np_fullmet)/100.0_sp)
allocate(z_approx(np_fullmet))
do k=1,np_fullmet
! Calculate heights for US Std Atmos while pressures are still in mbars
! or hPa
z_approx(k) = MR_Z_US_StdAtm(p_fullmet_sp(k))
enddo
write(MR_global_info,*)"Dimension info:"
write(MR_global_info,*)" record (time): ",nt_fullmet
write(MR_global_info,*)" level (z) : ",np_fullmet
write(MR_global_info,*)" y : ",ny_fullmet
write(MR_global_info,*)" x : ",nx_fullmet
!************************************************************************
! assign boundaries of mesoscale model
if(x_inverted)then
! I know of no windfiles with x-coordinate reversed
xLL_fullmet = x_fullmet_sp(nx_fullmet)
xUR_fullmet = x_fullmet_sp(1)
else
xLL_fullmet = x_fullmet_sp(1)
xUR_fullmet = x_fullmet_sp(nx_fullmet)
endif
if(y_inverted)then
! Most lon/lat grids have y reversed
yLL_fullmet = y_fullmet_sp(ny_fullmet)
yUR_fullmet = y_fullmet_sp(1)
else
! Projected grids have y not reversed
yLL_fullmet = y_fullmet_sp(1)
yUR_fullmet = y_fullmet_sp(ny_fullmet)
endif
write(MR_global_production,*)&
"----------------------------------------",&
"----------------------------------------"
end subroutine MR_Read_Met_DimVars_GRIB
!##############################################################################
!##############################################################################
!
! MR_Read_Met_Times_GRIB
!
! Called once from MR_Read_Met_DimVars
!
! This subroutine opens each GRIB file and determine the time of each
! time step of each file in the number of hours since MR_BaseYear.
! In most cases, the length of the time variable (nt_fullmet) will be
! read directly from the file and overwritten (is was set in MR_Read_Met_DimVars_GRIB
! above).
!
! After this subroutine completes, the following variables will be set:
! MR_windfile_starthour(MR_iwindfiles)
! MR_windfile_stephour(MR_iwindfiles,nt_fullmet)
!
!##############################################################################
subroutine MR_Read_Met_Times_GRIB
use MetReader
use eccodes
implicit none
integer, parameter :: sp = 4 ! single precision
integer, parameter :: dp = 8 ! double precision
integer :: iw,iws
integer :: itstart_year,itstart_month
integer :: itstart_day
real(kind=sp) :: filestart_hour
integer :: itstart_hour,itstart_min,itstart_sec
!real(kind=8) :: HS_hours_since_baseyear
character(len=130) :: dumstr
integer :: iwstep
integer :: dataDate
integer :: dataTime
integer :: forecastTime
integer :: ifile
! integer :: iret
integer :: igrib
integer :: nSTAT
INTERFACE
real(kind=8) function HS_hours_since_baseyear(iyear,imonth,iday,hours,byear,useLeaps)
integer :: iyear
integer :: imonth
integer :: iday
real(kind=8) :: hours
integer :: byear
logical :: useLeaps
end function HS_hours_since_baseyear
END INTERFACE
if(MR_VERB.ge.1)then
write(MR_global_production,*)"--------------------------------------------------------------------------------"
write(MR_global_production,*)"---------- MR_Read_Met_Times_GRIB ----------"
write(MR_global_production,*)"--------------------------------------------------------------------------------"
endif
if(.not.Met_dim_IsAvailable(1))then
write(MR_global_error,*)"MR ERROR: Time dimension is required and not listed"
write(MR_global_error,*)" in custom windfile specification file."
stop 1
endif
allocate(MR_windfile_starthour(MR_iwindfiles))
if(MR_iwindformat.eq.27)then
! GRIB1 reader not yet working!!
write(MR_global_error,*)"MR ERROR: iwf=27 is a GRIB1 format."
write(MR_global_error,*)" The GRIB1 reader is not yet working"
stop 1
! Here the branch for when MR_iwindformat = 27
! First copy path read in to slot 2
!if(MR_runAsForecast)then
! write(MR_global_error,*)"MR ERROR: iwf=27 cannot be used for forecast runs."
! write(MR_global_error,*)" These are reanalysis files."
! stop 1
!endif
dumstr = MR_windfiles(1)
110 format(a50,a1,i4,a1)
write(MR_windfiles(1),110)trim(ADJUSTL(dumstr)),'/', &
MR_Comp_StartYear,'/'
write(MR_windfiles(2),110)trim(ADJUSTL(dumstr)),'/', &
MR_Comp_StartYear+1,'/'
MR_windfile_starthour(1) = real(HS_hours_since_baseyear( &
MR_Comp_StartYear,1,1,0.0_8,MR_BaseYear,MR_useLeap),kind=sp)
MR_windfile_starthour(2) = real(HS_hours_since_baseyear( &
MR_Comp_StartYear+1,1,1,0.0_8,MR_BaseYear,MR_useLeap),kind=sp)
if ((mod(MR_Comp_StartYear,4).eq.0) .and. &
(mod(MR_Comp_StartYear,100).ne.0).or.(mod(MR_Comp_StartYear,400).eq.0))then
nt_fullmet = 1464 ! Leap year
else
nt_fullmet = 1460 ! Not a leap year
endif
MR_windfiles_nt_fullmet(1)=nt_fullmet
MR_windfiles_nt_fullmet(2)=nt_fullmet ! Note: we don't care if the next
! year is a leap year since
! the simulation will never
! be long enough to matter.
allocate(MR_windfile_stephour(MR_iwindfiles,nt_fullmet))
! the interval for iwf27 is 6 hours
do iwstep = 1,nt_fullmet
MR_windfile_stephour(:,iwstep) = (iwstep-1)*6.0_4
enddo
else
! For all other formats, try to read the first grib message and get
! dataDate, dataTime and forecastTime
! Loop through all the windfiles
do iw = 1,MR_iwindfiles
! Each wind file needs a ref-time which in almost all cases is given
! in the 'units' attribute of the time variable
write(MR_global_info,*)iw,trim(ADJUSTL(MR_windfiles(iw)))
if(iw.eq.1)then
! For now, assume one time step per file
nt_fullmet = 1
write(MR_global_info,*)" Assuming all NWP files have the same number of steps."
write(MR_global_info,*)" For grib, assume one time step per file."
write(MR_global_info,*)" Allocating time arrays for ",MR_iwindfiles,"file(s)"
write(MR_global_info,*)" ",nt_fullmet,"step(s) each"
allocate(MR_windfile_stephour(MR_iwindfiles,nt_fullmet))
endif
call codes_open_file(ifile,trim(ADJUSTL(MR_windfiles(iw))),'R',nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_open_file ")
call codes_new_from_file(ifile,igrib,CODES_PRODUCT_GRIB,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_new_from_file ")
if(iw.eq.1) then
call codes_get(igrib,'editionNumber',MR_GRIB_Version,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get editionNumber ")
endif
call codes_get(igrib,'dataDate',dataDate,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get dataDate ")
call codes_get(igrib,'dataTime',dataTime,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get dataTime ")
if(MR_GRIB_Version.eq.1)then
! The only grib1 files we deal with are reanalysis files with no FC time
forecastTime = 0
else
call codes_get(igrib,'forecastTime',forecastTime,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_get forecastTime ")
endif
itstart_year = int(dataDate/10000)
itstart_month = int((dataDate-10000*itstart_year)/100)
itstart_day = mod(dataDate,100)
itstart_hour = int(dataTime/100)
itstart_min = mod(dataTime,100)
itstart_sec = 0
write(MR_global_info,2100)"Ref time = ",itstart_year,itstart_month,itstart_day, &
itstart_hour,itstart_min,itstart_sec
call codes_release(igrib,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_release ")
call codes_close_file(ifile,nSTAT)
if(nSTAT.ne.CODES_SUCCESS)call MR_GRIB_check_status(nSTAT,1,"codes_close_file ")
filestart_hour = real(itstart_hour,kind=sp) + &
real(itstart_min,kind=sp)/60.0_sp + &
real(itstart_sec,kind=sp)/3600.0_sp
MR_windfiles_nt_fullmet(iw)=nt_fullmet
MR_windfile_starthour(iw) = real(HS_hours_since_baseyear(itstart_year,itstart_month, &
itstart_day,real(filestart_hour,kind=8),MR_BaseYear,MR_useLeap),kind=4)
MR_windfile_stephour(iw,1) = real(forecastTime,kind=4)
enddo
endif
2100 format(20x,a11,i4,1x,i2,1x,i2,1x,i2,1x,i2,1x,i2)
! Finished setting up the start time of each wind file in HoursSince : MR_windfile_starthour(iw)
! and the forecast (offset from start of file) for each step : MR_windfile_stephour(iw,iwstep)
write(MR_global_info,*)" File, step, Ref, Offset, HoursSince"
do iw = 1,MR_iwindfiles
do iws = 1,nt_fullmet
write(MR_global_info,800)iw,iws,real(MR_windfile_starthour(iw),kind=4),&
real(MR_windfile_stephour(iw,iws),kind=4),&
real(MR_windfile_starthour(iw)+MR_windfile_stephour(iw,iws),kind=4)
enddo
enddo
800 format(i7,i7,3f12.2)
if(MR_VERB.ge.2)then
write(MR_global_production,*)"--------------------------------------------------------------------------------"
endif
end subroutine MR_Read_Met_Times_GRIB
!##############################################################################
!##############################################################################
!
! MR_Read_MetP_Variable_GRIB
!
! Called from Read_HGT_arrays and once from Read_3d_MetP_Variable.
!
! Sets MR_dum3d_metP, MR_dum2d_met, or MR_dum2d_met_int as appropriate
!
!##############################################################################
subroutine MR_Read_MetP_Variable_GRIB(ivar,istep)
use MetReader
use eccodes
implicit none
integer, parameter :: sp = 4 ! single precision
integer, parameter :: dp = 8 ! double precision
integer,intent(in) :: ivar
integer,intent(in) :: istep
integer :: iw,iwstep
integer :: np_met_loc
character(len=71) :: invar
character(len=130) :: index_file
character(len=130) :: grib_file_path
character(len=130) :: grib_file
real(kind=sp) :: del_H,del_P,dpdz
integer :: i,j,k
integer :: kk
integer :: kkk,itmp
integer :: ict, ileft(2),iright(2) !if wrapgrid=.true. ict=2 and left & iright have 2 values, otherwise 1
integer :: iistart(2),iicount(2) !if (wrapgrid), iistart(1)=istart, iistart(2)=1
integer :: Dimension_of_Variable
logical :: IsCategorical
integer,dimension(np_fullmet) :: p_met_loc
integer :: ifile
integer :: igrib
integer :: idx
! integer :: iret
integer :: nSTAT
integer :: l,m,t
integer :: count1=0
integer :: rstrt, rend
real(kind=8),dimension(:),allocatable :: values
real(kind=8),dimension(:,:),allocatable :: slice
integer(kind=4) :: numberOfPoints
integer(kind=4) :: Ni
integer(kind=4) :: Nj
integer(kind=4) :: typeOfFirstFixedSurface
! Stores values of keys read from grib file
!character(len=7) :: grb_marsParam
character(len=4) :: grb_typeSfc