da_jo_and_grady_radar.inc

1 subroutine da_jo_and_grady_radar(iv, re, jo, jo_grad_y)
2 
3    !-----------------------------------------------------------------------
4    ! Purpose: TBD
5    !-----------------------------------------------------------------------
6 
7    implicit none
8 
9    type (iv_type), intent(in)   :: iv          ! Innovation vector.
10    type (y_type), intent(in)    :: re          ! Residual vector.
11    type (y_type), intent(inout) :: jo_grad_y   ! Grad_y(Jo)
12    type (jo_type),intent(inout) :: jo          ! Obs cost function.
13 
14    integer :: n, k
15 
16    if (trace_use) call da_trace_entry("da_jo_and_grady_radar")
17 
18    jo % radar_rv = 0.0
19    jo % radar_rf = 0.0
20    
21    do n=1, iv%info(radar)%nlocal
22       do k=1, iv%info(radar)%levels(n)
23          if (use_radar_rv) then
24             jo_grad_y%radar(n)%rv(k) = -re%radar(n)%rv(k) / &
25                (iv%radar(n)%rv(k)%error * iv%radar(n)%rv(k)%error)
26          end if
27 
28          if (use_radar_rf) then
29             jo_grad_y%radar(n)%rf(k) = -re%radar(n)%rf(k) / &
30                (iv%radar(n)%rf(k)%error * iv%radar(n)%rf(k)%error)
31          end if
32       end do
33 
34       if (iv%info(radar)%proc_domain(1,n)) then
35          do k=1, iv%info(radar)%levels(n)
36             if (use_radar_rv) then
37                jo % radar_rv = jo % radar_rv - re%radar(n)%rv(k) * jo_grad_y%radar(n)%rv(k)
38             end if
39 
40             if (use_radar_rf) then
41                jo % radar_rf = jo % radar_rf - re%radar(n)%rf(k) * jo_grad_y%radar(n)%rf(k)
42             end if
43          end do
44       end if
45    end do
46       
47    jo % radar_rv = 0.5 * jo % radar_rv
48    jo % radar_rf = 0.5 * jo % radar_rf
49 
50    if (trace_use) call da_trace_exit("da_jo_and_grady_radar")
51 
52 end subroutine da_jo_and_grady_radar
53 
54