da_calculate_grady_pilot.inc

1 subroutine da_calculate_grady_pilot(iv, re, jo_grad_y)
2 
3    !-------------------------------------------------------------------------
4    ! Purpose: Applies obs inverse on re-vector
5    !-------------------------------------------------------------------------
6 
7    implicit none
8 
9 
10    type (ob_type), intent(in)     :: iv          ! Innovation vector.
11    type (y_type),  intent(inout)  :: re          ! Residual vector.
12    type (y_type),  intent(inout)  :: jo_grad_y   ! Grad_y(Jo)
13 
14 
15    integer                      :: n, k
16 
17 
18    if (iv%num_pilot > 0) then
19       do n=1, iv%num_pilot
20          do k=1, iv%pilot(n)%info%levels
21             if (iv%pilot(n)%u(k)%qc < obs_qc_pointer) re%pilot(n)%u(k) = 0.0
22             if (iv%pilot(n)%v(k)%qc < obs_qc_pointer) re%pilot(n)%v(k) = 0.0
23 
24             jo_grad_y%pilot(n)%u(k) = -re%pilot(n)%u(k) / &
25                                       (iv%pilot(n)%u(k)%error * &
26                                         iv%pilot(n)%u(k)%error)
27             jo_grad_y%pilot(n)%v(k) = -re%pilot(n)%v(k) / &
28                                       (iv%pilot(n)%v(k)%error * &
29                                         iv%pilot(n)%v(k)%error)
30          end do
31       end do
32    end if
33 
34 end subroutine da_calculate_grady_pilot
35 
36