1 subroutine da_calculate_grady_gpspw(iv, re, jo_grad_y)
3 !-----------------------------------------------------------------------
4 ! Purpose: Applies obs inverse on re-vector
5 !-----------------------------------------------------------------------
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)
15 if (trace_use_dull) call da_trace_entry("da_calculate_grady_gpspw")
17 do n=1, iv%info(gpspw)%nlocal
18 if (iv%gpspw(n)%tpw%qc < obs_qc_pointer) then
22 jo_grad_y%gpspw(n)%tpw = -re%gpspw(n)%tpw / (iv%gpspw(n)%tpw%error * iv%gpspw(n)%tpw%error)
25 if (trace_use_dull) call da_trace_exit("da_calculate_grady_gpspw")
28 end subroutine da_calculate_grady_gpspw