subroutine da_calculate_grady_airsr(iv, re, jo_grad_y) !---------------------------------------------------------------------- ! Purpose: Applies obs inverse on AIRS 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_airsr") do n=1, iv%info(airsr)%nlocal do k=1, iv%info(airsr)%levels(n) if (iv%airsr(n)%t(k)%qc < obs_qc_pointer) re%airsr(n)%t(k) = 0.0 if (iv%airsr(n)%q(k)%qc < obs_qc_pointer) re%airsr(n)%q(k) = 0.0 jo_grad_y%airsr(n)%t(k) = -re%airsr(n)%t(k) / (iv%airsr(n)%t(k)%error * iv%airsr(n)%t(k)%error) jo_grad_y%airsr(n)%q(k) = -re%airsr(n)%q(k) / (iv%airsr(n)%q(k)%error * iv%airsr(n)%q(k)%error) end do end do if (trace_use_dull) call da_trace_exit("da_calculate_grady_airsr") end subroutine da_calculate_grady_airsr