routing_interface.f90 19 KB
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SUBROUTINE initatmgrid(nbpt, nbseg, polygons_in, centre_in, area_in, contfrac_in, neighbours_in)
  !
  USE grid
  !
  IMPLICIT NONE
  !
  !! INPUT VARIABLES
  INTEGER, INTENT(in) :: nbpt   !! Atmospheric Domain size (unitless)
  INTEGER, INTENT(in) :: nbseg  !! Number of segments in the polygone
  REAL, INTENT(in) :: polygons_in(nbpt,2*nbseg+1,2)
  REAL, INTENT(in) :: centre_in(nbpt,2)
  REAL, INTENT(in) :: contfrac_in(nbpt)
  REAL, INTENT(in) :: area_in(nbpt)
  INTEGER, INTENT(in) :: neighbours_in(nbpt,nbseg*2)
  !
  !! Local
  INTEGER :: i
  INTEGER :: neighbours_loc(nbpt,nbseg*2)
  !
  DO i=1,nbpt
     ! Move from C to F indexing.
     neighbours_loc(i,:) = neighbours_in(i,:)+1
  ENDDO
  !
  CALL grid_init(nbpt, nbseg, polygons_in, centre_in, area_in, contfrac_in, neighbours_loc)
  !
END SUBROUTINE initatmgrid

SUBROUTINE gethydrogrid(nbpt, nbvmax_in, nbxmax_in, sub_pts, sub_index, sub_area,  max_basins, min_topoind, &
     & lon_rel, lat_rel, trip, basins, topoindex, fac, hierarchy, nbi, nbj, area_bx, trip_bx, basin_bx, &
     & topoind_bx, fac_bx, hierarchy_bx, lon_bx, lat_bx, lshead_bx, nwbas)
  !
  USE ioipsl
  USE grid
  USE routing_tools
  USE routing_reg
  !
  IMPLICIT NONE
  !
  INTEGER, INTENT(in) :: nbvmax_in, nbxmax_in
  !
  INTEGER, INTENT(in) :: nbpt !! Domain size (unitless)
  INTEGER, INTENT(in) :: sub_pts(nbpt) !! Number of high resolution points on this grid (unitless)
  INTEGER, INTENT(in) :: sub_index(nbpt,nbvmax_in,2) !! Indices of the points we need on the fine grid (unitless)
  REAL, INTENT(inout) :: max_basins !! The current maximum of basins
  REAL, INTENT(in) :: min_topoind !! The current minimum of topographic index (m)
  REAL, INTENT(in) :: sub_area(nbpt,nbvmax_in) !! Area on the fine grid (m^2)
  !
  REAL, INTENT(in) :: lon_rel(nbpt,nbvmax_in) !!
  REAL, INTENT(in) :: lat_rel(nbpt,nbvmax_in) !! coordinates of the fine grid
  !
  REAL, INTENT(inout) :: trip(nbpt,nbvmax_in) !! The trip field (unitless)
  REAL, INTENT(inout) :: basins(nbpt,nbvmax_in) !! data on the fine grid
  REAL, INTENT(inout) :: topoindex(nbpt,nbvmax_in) !! Topographic index of the residence time (m)
  REAL, INTENT(inout) :: hierarchy(nbpt,nbvmax_in) !! data on the fine grid
  REAL, INTENT(inout) :: fac(nbpt,nbvmax_in) !! data on the fine grid
  !
  !! OUTPUT VARIABLES
  INTEGER, INTENT(out) :: nbi(nbpt), nbj(nbpt) !! Number of point in x and y within the grid (unitless)
  REAL, INTENT(out) :: area_bx(nbpt,nbxmax_in,nbxmax_in) !! Area of each small box in the grid box (m^2)
  REAL, INTENT(out) :: hierarchy_bx(nbpt,nbxmax_in,nbxmax_in) !! Level in the basin of the point
  REAL, INTENT(out) :: fac_bx(nbpt,nbxmax_in,nbxmax_in) !! Flow accumulation
  REAL, INTENT(out) :: lon_bx(nbpt,nbxmax_in,nbxmax_in) !!
  REAL, INTENT(out) :: lat_bx(nbpt,nbxmax_in,nbxmax_in) !!
  REAL, INTENT(out) :: lshead_bx(nbpt,nbxmax_in,nbxmax_in) !! Large scale heading for outflow points.
  REAL, INTENT(out) :: topoind_bx(nbpt,nbxmax_in,nbxmax_in) !! Topographic index of the residence time for each of the smaller boxes (m)
  INTEGER, INTENT(out) :: trip_bx(nbpt,nbxmax_in,nbxmax_in) !! The trip field for each of the smaller boxes (unitless)
  INTEGER, INTENT(out) :: basin_bx(nbpt,nbxmax_in,nbxmax_in) !!
  INTEGER, INTENT(out) :: nwbas
  !
  INTEGER :: ii, ib
  REAL :: resolution(nbpt,2)
  
  !
  ! These two parameters are part of the routing_reg module saved variables. They are transfered here.
  !
  nbvmax = nbvmax_in
  nbxmax = nbxmax_in
  !
  DO ii=1,nbpt
     resolution(ii,1) = SQRT(area(ii))
     resolution(ii,2) = SQRT(area(ii))
  ENDDO
  
  nwbas = MAXVAL(sub_pts)
  
  DO ib=1,nbpt
     CALL routing_reg_getgrid(nbpt, ib, sub_pts, sub_index, sub_area, max_basins, min_topoind, &
          & lon_rel, lat_rel, lalo, resolution, contfrac, trip, basins, topoindex, fac, hierarchy, &
          & nbi(ib), nbj(ib), area_bx(ib,:,:), trip_bx(ib,:,:), basin_bx(ib,:,:), topoind_bx(ib,:,:), &
          & fac_bx(ib,:,:), hierarchy_bx(ib,:,:), lon_bx(ib,:,:), lat_bx(ib,:,:), lshead_bx(ib,:,:))
  ENDDO
  !
END SUBROUTINE gethydrogrid


SUBROUTINE findbasins(nbpt, nbvmax_in, nbxmax_in, nbi, nbj, trip_bx, basin_bx, fac_bx, hierarchy_bx, topoind_bx, lshead_bx, &
     &                nb_basin, basin_inbxid, basin_outlet, basin_outtp, basin_sz, basin_bxout, basin_bbout, basin_pts, &
     &                basin_lshead, coast_pts, lontmp, lattmp)
  !
  USE ioipsl
  USE grid
  USE routing_tools
  USE routing_reg
  !
  ! Arguments
  !
  INTEGER, INTENT(in)    :: nbvmax_in, nbxmax_in
  INTEGER, INTENT(in)    :: nbpt !! Domain size (unitless)
  INTEGER, INTENT(in)    :: nbi(nbpt), nbj(nbpt) !! Number of point in x and y within the grid (unitless)
  INTEGER, INTENT(inout) :: trip_bx(nbpt,nbxmax_in,nbxmax_in) !! The trip field for each of the smaller boxes (unitless)
  INTEGER, INTENT(inout) :: basin_bx(nbpt,nbxmax_in,nbxmax_in) !!
  REAL, INTENT(in)       :: fac_bx(nbpt,nbxmax_in,nbxmax_in) !! Flow accumulation
  REAL, INTENT(in)       :: hierarchy_bx(nbpt,nbxmax_in,nbxmax_in) !! Level in the basin of the point
  REAL, INTENT(inout)    :: topoind_bx(nbpt,nbxmax_in,nbxmax_in) !! Topographic index of the residence time for each of the smaller boxes (m)
  REAL, INTENT(in)       :: lshead_bx(nbpt,nbxmax_in,nbxmax_in) !! Large scale heading for outflow points.
  !
  !
  ! OUTPUT VARIABLES
  INTEGER, INTENT(out) :: nb_basin(nbpt)               !! Number of sub-basins (unitless)
  INTEGER, INTENT(out) :: basin_inbxid(nbpt,nbvmax_in)   !!
  REAL, INTENT(out)    :: basin_outlet(nbpt,nbvmax_in,2) !!
  REAL, INTENT(out)    :: basin_outtp(nbpt,nbvmax_in)    !!  
  INTEGER, INTENT(out) :: basin_sz(nbpt,nbvmax_in)       !!
  INTEGER, INTENT(out) :: basin_bxout(nbpt,nbvmax_in)    !!
  INTEGER, INTENT(out) :: basin_bbout(nbpt,nbvmax_in)    !!
  INTEGER, INTENT(out) :: basin_pts(nbpt,nbvmax_in, nbvmax_in, 2) !!
  REAL, INTENT(out)    :: basin_lshead(nbpt,nbvmax_in)   !!
  INTEGER, INTENT(out) :: coast_pts(nbpt,nbvmax_in)      !! The coastal flow points (unitless)
  !
  ! For debug and get coordinate of river outlet
  !
  REAL, INTENT(in) :: lontmp(nbpt,nbxmax_in,nbxmax_in) !! Longitude
  REAL, INTENT(in) :: lattmp(nbpt,nbxmax_in,nbxmax_in) !! Latitude
  !
  ! Local
  !
  INTEGER :: ib
  !
  diaglalo(1,:) = (/ 45.125, 29.125 /)
  !
  IF ( nbvmax_in .NE. nbvmax .OR. nbxmax_in .NE. nbxmax ) THEN
     WRITE(*,*) "nbvmax or nbxmax have changed !!"
     STOP
  ENDIF
  
  DO ib=1,nbpt
     CALL routing_reg_findbasins(ib, nbi(ib), nbj(ib), trip_bx(ib,:,:), basin_bx(ib,:,:), fac_bx(ib,:,:), hierarchy_bx(ib,:,:), &
          & topoind_bx(ib,:,:), lshead_bx(ib,:,:), diaglalo, &
          & nb_basin(ib), basin_inbxid(ib,:), basin_outlet(ib,:,:), basin_outtp(ib,:), basin_sz(ib,:), basin_bxout(ib,:), &
          & basin_bbout(ib,:), basin_pts(ib,:,:,:), basin_lshead(ib,:), coast_pts(ib,:), lontmp(ib,:,:), lattmp(ib,:,:))
  ENDDO

END SUBROUTINE findbasins

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SUBROUTINE globalize(nbpt, nbvmax_in, nbxmax_in, area_bx, lon_bx, lat_bx, trip_bx, hierarchy_bx, fac_bx, topoind_bx, &
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          & min_topoind, nb_basin, basin_inbxid, basin_outlet, basin_outtp, basin_sz, basin_pts, basin_bxout, &
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          & basin_bbout, lshead, coast_pts, nwbas, basin_count, basin_notrun, basin_area, basin_cg, basin_hierarchy, &
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          & basin_fac, basin_topoind, basin_id, basin_coor, basin_type, basin_flowdir, basin_lshead, &
          & outflow_grid, outflow_basin, nbcoastal, coastal_basin)
  !
  USE ioipsl
  USE grid
  USE routing_tools
  USE routing_reg
  !
  ! Arguments
  !
  !! INPUT VARIABLES
  INTEGER(i_std), INTENT (in) :: nbpt !! Domain size (unitless)
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  INTEGER(i_std), INTENT(in)  :: nbvmax_in, nbxmax_in
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  REAL(r_std), INTENT (in), DIMENSION(nbpt,nbxmax_in,nbxmax_in)    :: area_bx      !! Area of each small box in the grid box (m^2)
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  REAL(r_std), INTENT (in), DIMENSION(nbpt,nbxmax_in,nbxmax_in)    :: lon_bx       !! Longitude of each small box in the grid box
  REAL(r_std), INTENT (in), DIMENSION(nbpt,nbxmax_in,nbxmax_in)    :: lat_bx       !! Latitude of each small box in the grid box
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  INTEGER(i_std), INTENT (in), DIMENSION(nbpt,nbxmax_in,nbxmax_in) :: trip_bx      !! The trip field for each of the smaller boxes (unitless)
  REAL(r_std), INTENT (in), DIMENSION(nbpt,nbxmax_in,nbxmax_in)    :: hierarchy_bx !! Level in the basin of the point
  REAL(r_std), INTENT (in), DIMENSION(nbpt,nbxmax_in,nbxmax_in)    :: fac_bx !! Level in the basin of the point
  REAL(r_std), INTENT (in), DIMENSION(nbpt,nbxmax_in,nbxmax_in)    :: topoind_bx   !! Topographic index of the residence time for each of the smaller boxes (m)
  REAL(r_std), INTENT (in)                                         :: min_topoind  !! The current minimum of topographic index (m)
  INTEGER(i_std), INTENT (in), DIMENSION(nbpt)                     :: nb_basin     !! Number of sub-basins (unitless)
  INTEGER(i_std), INTENT (in), DIMENSION(nbpt,nbvmax_in)     :: basin_inbxid, basin_sz !! ID of basin, number of points in the basin
  REAL(r_std), INTENT (in), DIMENSION(nbpt,nbvmax_in,2)      :: basin_outlet !! Outlet coordinate of each subgrid basin
  REAL(r_std), INTENT (in), DIMENSION(nbpt,nbvmax_in)        :: basin_outtp  !! 
  INTEGER(i_std), INTENT (in), DIMENSION(nbpt,nbvmax_in,nbvmax_in,2) :: basin_pts  !! Points in each basin
  INTEGER(i_std), INTENT (in), DIMENSION(nbpt,nbvmax_in)     :: basin_bxout  !! outflow direction
  INTEGER(i_std), INTENT (in), DIMENSION(nbpt,nbvmax_in)     :: basin_bbout  !! outflow sub-basin
  REAL(r_std), INTENT (in), DIMENSION(nbpt,nbvmax_in)        :: lshead       !! Large scale heading of outflow.
  INTEGER(i_std), INTENT (in), DIMENSION(nbpt,nbvmax_in)     :: coast_pts !! The coastal flow points (unitless)
  !! Output VARIABLES
  INTEGER(i_std), INTENT (in) :: nwbas !!
  INTEGER(i_std), INTENT (out), DIMENSION(nbpt)       :: basin_count         !!
  INTEGER(i_std), INTENT (out), DIMENSION(nbpt)       :: basin_notrun        !!
  INTEGER(i_std), INTENT (out), DIMENSION(nbpt,nwbas) :: basin_id      !!
  REAL(r_std), INTENT (out), DIMENSION(nbpt,nwbas,2)  :: basin_coor     !!
  REAL(r_std), INTENT (out), DIMENSION(nbpt,nwbas)    :: basin_type       !!
  INTEGER(i_std), INTENT (out), DIMENSION(nbpt,nwbas) :: basin_flowdir !! Water flow directions in the basin (unitless)
  REAL(r_std), INTENT (out), DIMENSION(nbpt,nwbas)    :: basin_area       !!
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  REAL(r_std), INTENT (out), DIMENSION(nbpt,nwbas,2)  :: basin_cg         !! Centre of gravity of the HTU
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  REAL(r_std), INTENT (out), DIMENSION(nbpt,nwbas)    :: basin_hierarchy  !!
  REAL(r_std), INTENT (out), DIMENSION(nbpt,nwbas)    :: basin_fac  !!
  REAL(r_std), INTENT (out), DIMENSION(nbpt,nwbas)    :: basin_topoind    !! Topographic index of the residence time for a basin (m)
  REAL(r_std), INTENT (out), DIMENSION(nbpt,nwbas)    :: basin_lshead     !! Large scale heading out of the grid box.
  INTEGER(i_std), INTENT (out), DIMENSION(nbpt,nwbas) :: outflow_grid  !! Type of outflow on the grid box (unitless)
  INTEGER(i_std), INTENT (out), DIMENSION(nbpt,nwbas) :: outflow_basin !! 
  INTEGER(i_std), INTENT (out), DIMENSION(nbpt)       :: nbcoastal           !!
  INTEGER(i_std), INTENT (out), DIMENSION(nbpt,nwbas) :: coastal_basin !!
  !!
  INTEGER(i_std) :: ib
  !!
  IF ( nbvmax_in .NE. nbvmax .OR. nbxmax_in .NE. nbxmax ) THEN
     WRITE(*,*) "GLOBALIZE : nbvmax or nbxmax have changed !!"
     STOP
  ENDIF
  !!
  DO ib=1,nbpt
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     CALL routing_reg_globalize(nbpt, ib, neighbours, area_bx(ib,:,:), lon_bx(ib,:,:), lat_bx(ib,:,:), trip_bx(ib,:,:), &
          & hierarchy_bx(ib,:,:), fac_bx(ib,:,:), &
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          & topoind_bx(ib,:,:), min_topoind, nb_basin(ib), basin_inbxid(ib,:), basin_outlet(ib,:,:), basin_outtp(ib,:), &
          & basin_sz(ib,:), basin_pts(ib,:,:,:), basin_bxout(ib,:), basin_bbout(ib,:), lshead(ib,:), coast_pts(ib,:), nwbas, &
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          & basin_count, basin_notrun, basin_area, basin_cg, basin_hierarchy, basin_fac, basin_topoind, basin_id, basin_coor, &
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          & basin_type, basin_flowdir, basin_lshead, outflow_grid, outflow_basin, nbcoastal, coastal_basin)
  ENDDO
  !
END SUBROUTINE globalize

SUBROUTINE linkup(nbpt, nbxmax_in, nwbas, basin_count, basin_area, basin_id, basin_flowdir, &
     & basin_lshead, basin_hierarchy, basin_fac, outflow_grid, outflow_basin, inflow_number, inflow_grid, &
     & inflow_basin, nbcoastal, coastal_basin, invented_basins)
  !
  USE ioipsl
  USE grid
  USE routing_tools
  USE routing_reg
  !
  ! Arguments
  !
  !! INPUT VARIABLES
  INTEGER(i_std), INTENT (in) :: nbpt !! Domain size (unitless)
  INTEGER(i_std), INTENT (in) :: nbxmax_in
  REAL(r_std), INTENT(in) :: invented_basins !!
  !
  INTEGER(i_std), INTENT (in) :: nwbas !!
  INTEGER(i_std), INTENT (in), DIMENSION(nbpt) :: basin_count !!
  INTEGER(i_std), INTENT (in), DIMENSION(nbpt,nwbas) :: basin_id !!
  INTEGER(i_std), INTENT (in), DIMENSION(nbpt,nwbas) :: basin_flowdir !! Water flow directions in the basin (unitless)
  REAL(r_std), INTENT (in), DIMENSION(nbpt,nwbas) :: basin_lshead  !! Large scale flow direction out of the basin.
  REAL(r_std), INTENT (in), DIMENSION(nbpt,nwbas) :: basin_area !!
  REAL(r_std), INTENT (inout), DIMENSION(nbpt,nwbas) :: basin_hierarchy !!
  REAL(r_std), INTENT (in), DIMENSION(nbpt,nwbas) :: basin_fac !!
  INTEGER(i_std), INTENT(inout), DIMENSION(nbpt,nwbas) :: outflow_grid !! Type of outflow on the grid box (unitless)
  INTEGER(i_std), INTENT(inout), DIMENSION(nbpt,nwbas) :: outflow_basin !!
  !
  INTEGER(i_std), INTENT(out), DIMENSION(nbpt,nbxmax_in*8) :: inflow_number !!
  INTEGER(i_std), INTENT(out), DIMENSION(nbpt,nbxmax_in*8,nbxmax_in*8) :: inflow_basin !!
  INTEGER(i_std), INTENT(out), DIMENSION(nbpt,nbxmax_in*8,nbxmax_in*8) :: inflow_grid !!
  !
  INTEGER(i_std), INTENT(inout), DIMENSION(nbpt) :: nbcoastal !!
  INTEGER(i_std), INTENT(inout), DIMENSION(nbpt,nwbas) :: coastal_basin !!
  !
  !
  IF ( nbxmax_in .NE. nbxmax ) THEN
     WRITE(*,*) "LINKUP : nbxmax has changed !!"
     STOP
  ENDIF
  
  CALL routing_reg_linkup(nbpt, neighbours, nwbas, basin_count, basin_area, basin_id, basin_flowdir, &
       & basin_lshead, basin_hierarchy, basin_fac, diaglalo, outflow_grid, outflow_basin, inflow_number, inflow_grid, &
       & inflow_basin, nbcoastal, coastal_basin, invented_basins)
  !
END SUBROUTINE linkup

SUBROUTINE fetch(nbpt, nwbas, basin_count, basin_area, basin_id, basin_hierarchy, basin_fac,&
     & outflow_grid, outflow_basin, fetch_basin)
  !
  USE ioipsl
  USE grid
  USE routing_tools
  USE routing_reg
  !
  ! Arguments
  !
  !! INPUT VARIABLES
  INTEGER(i_std), INTENT (in) :: nbpt !! Domain size (unitless)
  INTEGER(i_std), INTENT (in) :: nwbas !!
  INTEGER(i_std), DIMENSION(nbpt), INTENT(in) :: basin_count !!
  REAL(r_std), DIMENSION(nbpt,nwbas), INTENT(inout) :: basin_area !!
  INTEGER(i_std), DIMENSION(nbpt,nwbas), INTENT(in) :: basin_id !!
  REAL(r_std), DIMENSION(nbpt,nwbas), INTENT(in)       :: basin_hierarchy
  REAL(r_std), DIMENSION(nbpt,nwbas), INTENT(in)       :: basin_fac
  INTEGER(i_std), DIMENSION(nbpt,nwbas), INTENT(inout) :: outflow_grid !! Type of outflow on the grid box (unitless)
  INTEGER(i_std), DIMENSION(nbpt,nwbas), INTENT(in) :: outflow_basin !!
  !
  !! OUTPUT VARIABLES
  REAL(r_std), DIMENSION(nbpt,nwbas), INTENT(out) :: fetch_basin !!
  
  CALL routing_reg_fetch(nbpt, area, contfrac, nwbas, basin_count, basin_area, basin_id, basin_hierarchy, basin_fac,&
       & outflow_grid, outflow_basin, fetch_basin)
  !
END SUBROUTINE fetch


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SUBROUTINE truncate(nbpt, nbxmax_in, nbasmax, nwbas, basin_count, basin_notrun, basin_area, basin_cg, basin_topoind,&
304
     & fetch_basin, basin_id, basin_coor, basin_type, basin_flowdir, outflow_grid, outflow_basin, inflow_number,&
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     & inflow_grid, inflow_basin, routing_area, routing_cg, topo_resid, route_togrid, route_tobasin, route_nbintobas, &
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     & global_basinid, route_outlet, route_type, origin_nbintobas)
  !
  USE ioipsl
  USE grid
  USE routing_tools
  USE routing_reg
  !
  ! Arguments
  !
  !! INPUT VARIABLES
  INTEGER(i_std), INTENT (in) :: nbpt !! Domain size (unitless)
  INTEGER(i_std), INTENT (in) :: nbasmax
  INTEGER(i_std), INTENT (in) :: nwbas !!

  INTEGER(i_std), DIMENSION(nbpt), INTENT(inout)       :: basin_count !!
  INTEGER(i_std), DIMENSION(nbpt), INTENT(inout)       :: basin_notrun !!
  INTEGER(i_std), DIMENSION(nbpt,nwbas), INTENT(inout) :: basin_id !!
  REAL(r_std), DIMENSION(nbpt,nwbas,2), INTENT(inout)  :: basin_coor !!
  REAL(r_std), DIMENSION(nbpt,nwbas), INTENT(inout)    :: basin_type !!
  INTEGER(i_std), DIMENSION(nbpt,nwbas), INTENT(inout) :: basin_flowdir !! Water flow directions in the basin (unitless)
  REAL(r_std), DIMENSION(nbpt,nwbas), INTENT(inout)    :: basin_area !!
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  REAL(r_std), DIMENSION(nbpt,nwbas,2), INTENT(inout)  :: basin_cg
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  REAL(r_std), DIMENSION(nbpt,nwbas), INTENT(inout)    :: basin_topoind !! Topographic index of the residence time for a basin (m)
  REAL(r_std), DIMENSION(nbpt,nwbas), INTENT(inout)    :: fetch_basin !!
  INTEGER(i_std), DIMENSION(nbpt,nwbas), INTENT(inout) :: outflow_grid !! Type of outflow on the grid box (unitless)
  INTEGER(i_std), DIMENSION(nbpt,nwbas), INTENT(inout) :: outflow_basin !!
  !
  ! Changed nwbas to nbxmax*4 and *8 to save the memory
  !
  INTEGER(i_std), DIMENSION(nbpt,nbxmax_in*8), INTENT(inout)          :: inflow_number !!
  INTEGER(i_std), DIMENSION(nbpt,nbxmax_in*8,nbxmax_in*8), INTENT(inout) :: inflow_basin !!
  INTEGER(i_std), DIMENSION(nbpt,nbxmax_in*8,nbxmax_in*8), INTENT(inout) :: inflow_grid !!
  !
  ! Output variables
  !
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  REAL(r_std), DIMENSION(nbpt,nbasmax), INTENT(out)    :: routing_area !! Surface of basin (m^2)
  REAL(r_std), DIMENSION(nbpt,nbasmax,2), INTENT(out)  :: routing_cg !! Centre of gravity of HTU (Lat, Lon)
  REAL(r_std), DIMENSION(nbpt,nbasmax), INTENT(out)    :: topo_resid !! Topographic index of the retention time (m)
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  INTEGER(i_std), DIMENSION(nbpt,nbasmax), INTENT(out) :: route_togrid !! Grid into which the basin flows (unitless)
  INTEGER(i_std), DIMENSION(nbpt,nbasmax), INTENT(out) :: route_tobasin !! Basin in to which the water goes (unitless)
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  INTEGER(i_std), DIMENSION(nbpt), INTENT(out)         :: route_nbintobas !! Number of basin into current one (unitless)
  INTEGER(i_std), DIMENSION(nbpt), INTENT(out)         :: origin_nbintobas !! Number of sub-grid basin into current one before truncation (unitless)
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  INTEGER(i_std), DIMENSION(nbpt,nbasmax), INTENT(out) :: global_basinid !! ID of basin (unitless)
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  REAL(r_std), DIMENSION(nbpt,nbasmax,2), INTENT(out)  :: route_outlet !! Coordinate of outlet (-)
  REAL(r_std), DIMENSION(nbpt,nbasmax), INTENT(out)    :: route_type !! Coordinate of outlet (-)
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  !
  IF ( nbxmax_in .NE. nbxmax ) THEN
     WRITE(*,*) "TRUNCATE : nbxmax has changed !!"
     STOP
  ENDIF

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  CALL routing_reg_truncate(nbpt, nbasmax, area, contfrac, nwbas, basin_count, basin_notrun, basin_area, basin_cg, &
       & basin_topoind, fetch_basin, basin_id, basin_coor, basin_type, basin_flowdir, outflow_grid, outflow_basin, inflow_number,&
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       & inflow_grid, inflow_basin)

  routing_area(:,:) = routing_area_glo(:,:)
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  routing_cg(:,:,:) = routing_cg_glo(:,:,:)
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  topo_resid(:,:) = topo_resid_glo(:,:) 
  route_togrid(:,:) = route_togrid_glo(:,:)
  route_tobasin(:,:) = route_tobasin_glo(:,:)
  route_nbintobas(:) = route_nbintobas_glo(:)
  global_basinid(:,:) = global_basinid_glo(:,:)
  route_outlet(:,:,:) = route_outlet_glo(:,:,:)
  route_type(:,:) = route_type_glo(:,:)
  origin_nbintobas(:) = origin_nbintobas_glo(:)

END SUBROUTINE truncate