subroutine da_calculate_grady_pilot(iv, re, jo_grad_y) !------------------------------------------------------------------------- ! Purpose: Applies obs inverse on re-vector !------------------------------------------------------------------------- implicit none type (iv_type), intent(in) :: iv ! Innovation vector. type (y_type), intent(inout) :: re ! Residual vector. type (y_type), intent(inout) :: jo_grad_y ! Grad_y(Jo) integer :: n, k if (trace_use_dull) call da_trace_entry("da_calculate_grady_pilot") do n=1, iv%info(pilot)%nlocal do k=1, iv%info(pilot)%levels(n) if (iv%pilot(n)%u(k)%qc < obs_qc_pointer) re%pilot(n)%u(k) = 0.0 if (iv%pilot(n)%v(k)%qc < obs_qc_pointer) re%pilot(n)%v(k) = 0.0 jo_grad_y%pilot(n)%u(k) = -re%pilot(n)%u(k) / (iv%pilot(n)%u(k)%error * iv%pilot(n)%u(k)%error) jo_grad_y%pilot(n)%v(k) = -re%pilot(n)%v(k) / (iv%pilot(n)%v(k)%error * iv%pilot(n)%v(k)%error) end do end do if (trace_use_dull) call da_trace_exit("da_calculate_grady_pilot") end subroutine da_calculate_grady_pilot