subroutine da_calculate_grady_geoamv(iv, re, jo_grad_y) !------------------------------------------------------------------------- ! Purpose: Calculates Gradient of Geo. CMVs Obs. ! !------------------------------------------------------------------------- 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_geoamv") do n=1, iv%info(geoamv)%nlocal do k=1, iv%info(geoamv)%levels(n) if (iv%geoamv(n)%u(k)%qc < obs_qc_pointer) re%geoamv(n)%u(k) = 0.0 if (iv%geoamv(n)%v(k)%qc < obs_qc_pointer) re%geoamv(n)%v(k) = 0.0 jo_grad_y%geoamv(n)%u(k) = -re%geoamv(n)%u(k) / (iv%geoamv(n)%u(k)%error * iv%geoamv(n)%u(k)%error) jo_grad_y%geoamv(n)%v(k) = -re%geoamv(n)%v(k) / (iv%geoamv(n)%v(k)%error * iv%geoamv(n)%v(k)%error) end do end do if (trace_use_dull) call da_trace_exit("da_calculate_grady_geoamv") end subroutine da_calculate_grady_geoamv