Observations of the submillimetre part of the electromagnetic spectrum have previously been the domain of the astronomical community. However, new technological advances in the superconducting detectors field are offering the atmospheric sciences unexplored opportunities to perform useful spectroscopy in this region, exploiting existing radio telescope sites. Example simulations at six sites are presented for HBr, HOBr, HO₂ and N₂O showing the need for broad high-resolution measurements.