da_calculate_grady_airsr.inc

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