da_calculate_grady_airep.inc

1 subroutine da_calculate_grady_airep(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    integer                      :: n, k
15 
16    if (iv%num_airep > 0) then
17       do n=1, iv%num_airep
18          do k=1, iv%airep(n)%info%levels
19             if (iv%airep(n)%u(k)%qc < obs_qc_pointer) re%airep(n)%u(k) = 0.0
20             if (iv%airep(n)%v(k)%qc < obs_qc_pointer) re%airep(n)%v(k) = 0.0
21             if (iv%airep(n)%t(k)%qc < obs_qc_pointer) re%airep(n)%t(k) = 0.0
22 
23             jo_grad_y%airep(n)%u(k) = -re%airep(n)%u(k) / &
24                                    (iv%airep(n)%u(k)%error * &
25                                      iv%airep(n)%u(k)%error)
26             jo_grad_y%airep(n)%v(k) = -re%airep(n)%v(k) / &
27                                    (iv%airep(n)%v(k)%error * &
28                                      iv%airep(n)%v(k)%error)
29             jo_grad_y%airep(n)%t(k) = -re%airep(n)%t(k) / &
30                                    (iv%airep(n)%t(k)%error * &
31                                      iv%airep(n)%t(k)%error)
32          end do
33       end do
34    end if
35 
36 end subroutine da_calculate_grady_airep
37 
38