subroutine da_calculate_grady_qscat(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 if (trace_use_dull) call da_trace_entry("da_calculate_grady_qscat") do n=1, iv%info(qscat)%nlocal if (iv%qscat(n)%u%qc < obs_qc_pointer) re%qscat(n)%u = 0.0 if (iv%qscat(n)%v%qc < obs_qc_pointer) re%qscat(n)%v = 0.0 jo_grad_y%qscat(n)%u = -re%qscat(n)%u / (iv%qscat(n)%u%error * iv%qscat(n)%u%error) jo_grad_y%qscat(n)%v = -re%qscat(n)%v / (iv%qscat(n)%v%error * iv%qscat(n)%v%error) end do if (trace_use_dull) call da_trace_exit("da_calculate_grady_qscat") end subroutine da_calculate_grady_qscat