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 (iv_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 (trace_use_dull) call da_trace_entry("da_calculate_grady_airep")
17 
18    do n=1, iv%info(airep)%nlocal
19       do k=1, iv%info(airep)%levels(n)
20          if (iv%airep(n)%u(k)%qc < obs_qc_pointer) re%airep(n)%u(k) = 0.0
21          if (iv%airep(n)%v(k)%qc < obs_qc_pointer) re%airep(n)%v(k) = 0.0
22          if (iv%airep(n)%t(k)%qc < obs_qc_pointer) re%airep(n)%t(k) = 0.0
23 
24 
25          jo_grad_y%airep(n)%u(k) = -re%airep(n)%u(k) / (iv%airep(n)%u(k)%error*iv%airep(n)%u(k)%error)
26          jo_grad_y%airep(n)%v(k) = -re%airep(n)%v(k) / (iv%airep(n)%v(k)%error*iv%airep(n)%v(k)%error)
27          jo_grad_y%airep(n)%t(k) = -re%airep(n)%t(k) / (iv%airep(n)%t(k)%error*iv%airep(n)%t(k)%error)
28       end do
29    end do
30    
31    if (trace_use_dull) call da_trace_exit("da_calculate_grady_airep")
32 
33 end subroutine da_calculate_grady_airep
34 
35