deallocate_arrays Subroutine

  subroutine deallocate_arrays
    use mp, only: proc0
    use gs2_heating, only: del_htype
    use diagnostics_fluxes, only: finish_diagnostics_fluxes
    implicit none

    if (write_heating) then
       call del_htype (h)
       call del_htype (h_hist)
       call del_htype (hk_hist)
       call del_htype (hk)
    end if

    call finish_diagnostics_fluxes()
    if (allocated(h_hist)) deallocate (h_hist, hk_hist, hk)
    if (allocated(j_ext_hist)) deallocate (j_ext_hist)
    if (proc0 .and. allocated(omegahist)) deallocate (omegahist)
    if (allocated(pflux_tormom)) deallocate (pflux_tormom) 

    if (allocated(pflux_avg)) deallocate (pflux_avg, qflux_avg, heat_avg, vflux_avg)
    if (allocated(omega)) deallocate(omega, omegaavg)

    if (proc0 .and. allocated(conv_heat)) deallocate (conv_heat)

    if (proc0 .and. allocated(domega)) deallocate(domega)
  end subroutine deallocate_arrays