subroutine da_calculate_grady_ssmt2(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_ssmt2") do n=1, iv%info(ssmt2)%nlocal do k=1, iv%info(ssmt2)%levels(n) if (iv%ssmt2(n)%rh(k)%qc < obs_qc_pointer) re%ssmt2(n)%rh(k) = 0.0 jo_grad_y%ssmt2(n)%rh(k) = -re%ssmt2(n)%rh(k) / & (iv%ssmt2(n)%rh(k)%error * iv%ssmt2(n)%rh(k)%error) end do end do if (trace_use_dull) call da_trace_exit("da_calculate_grady_ssmt2") end subroutine da_calculate_grady_ssmt2