da_calculate_grady_satem.inc

1 subroutine da_calculate_grady_satem(iv, re, jo_grad_y)
2 
3    !----------------------------------------------------------------------
4    ! Purpose: Applies obs inverse on re-vector
5    !----------------------------------------------------------------------
6 
7    implicit none
8 
9    type (iv_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 (trace_use_dull) call da_trace_entry("da_calculate_grady_satem")
16 
17    do n=1, iv%info(satem)%nlocal
18       do k=1, iv%info(satem)%levels(n)
19          if (iv%satem(n)%thickness(k)%qc < obs_qc_pointer) then
20             re%satem(n)%thickness(k) = 0.0
21          end if
22 
23          jo_grad_y%satem(n)%thickness(k) = -re%satem(n)%thickness(k) / &
24             (iv%satem(n)%thickness(k)%error * iv%satem(n)%thickness(k)%error)
25          end do
26    end do
27 
28    if (trace_use_dull) call da_trace_exit("da_calculate_grady_satem")
29 
30 end subroutine da_calculate_grady_satem
31 
32