da_transform_xtoy_qscat_adj.inc

1 subroutine da_transform_xtoy_qscat_adj(iv, xp, jo_grad_y, jo_grad_x)
2 
3    !-----------------------------------------------------------------------
4    ! Purpose: TBD
5    !-----------------------------------------------------------------------
6 
7    implicit none
8 
9    type (ob_type), intent(in)    :: iv          ! obs. inc vector (o-b).
10    type (xpose_type), intent(in) :: xp          ! Domain decomposition vars.
11    type (y_type) , intent(in)    :: jo_grad_y   ! grad_y(jo)
12    type (x_type) , intent(inout) :: jo_grad_x   ! grad_x(jo)
13 
14    integer                       :: n        ! Loop counter.
15    integer                       :: i, j     ! Index dimension.
16    real                          :: dx, dxm  ! 
17    real                          :: dy, dym  !
18 
19    if (iv%num_qscat > 0) then
20       do n=iv%ob_numb(iv%current_ob_time-1)%qscat + 1, &
21          iv%ob_numb(iv%current_ob_time)%qscat
22       
23          ! [1.1] Get horizontal interpolation weights:
24 
25          i = iv%qscat(n)%loc%i
26          dy = iv%qscat(n)%loc%dy
27          dym = iv%qscat(n)%loc%dym
28          j = iv%qscat(n)%loc%j
29          dx = iv%qscat(n)%loc%dx
30          dxm = iv%qscat(n)%loc%dxm
31 
32          ! [1.2] Interpolate horizontally:
33          call da_interp_obs_lin_2d_adj(jo_grad_x % u, xp, i, j, dx, dy, dxm, dym, &
34                                     jo_grad_y%qscat(n)%u, iv%qscat(n)%zk)
35          call da_interp_obs_lin_2d_adj(jo_grad_x % v, xp, i, j, dx, dy, dxm, dym, &
36                                     jo_grad_y%qscat(n)%v, iv%qscat(n)%zk)
37       end do
38    end if
39 
40 end subroutine da_transform_xtoy_qscat_adj
41 
42