Journal cover Journal topic
Annales Geophysicae An open-access journal of the European Geosciences Union
Ann. Geophys., 35, 567-582, 2017
http://www.ann-geophys.net/35/567/2017/
doi:10.5194/angeo-35-567-2017
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Regular paper
18 Apr 2017
Seasonal MLT-region nightglow intensities, temperatures, and emission heights at a Southern Hemisphere midlatitude site
Iain M. Reid1,2, Andrew J. Spargo2, Jonathan M. Woithe1, Andrew R. Klekociuk2,3, Joel P. Younger1,2, and Gulamabas G. Sivjee4 1ATRAD Pty Ltd, 20 Phillips St., Thebarton, 5031, Australia
2School of Physical Sciences, University of Adelaide, Adelaide 5000, Australia
3Antarctica and the Global System, Australian Antarctic Division, Department of the Environment and Energy, Kingston, Tasmania, Australia
4Embry Riddle Aeronautical University, Department Physical Sciences, Daytona Beach, FL 32114, USA
Abstract. We consider 5 years of spectrometer measurements of OH(6–2) and O2(0–1) airglow emission intensities and temperatures made near Adelaide, Australia (35° S, 138° E), between September 2001 and August 2006 and compare them with measurements of the same parameters from at the same site using an airglow imager, with the intensities of the OH(8–3) and O(1S) emissions made with a filter photometer, and with 2 years of Aura MLS (Microwave Limb Sounder) v3.3 temperatures and 4.5 years of TIMED SABER (Thermosphere Ionosphere Mesosphere Energetics and Dynamics Sounding of the Atmosphere using Broadband Emission Radiometry) v2.0 temperatures for the same site. We also consider whether we can recover the actual emission heights from the intercomparison of the ground-based and satellite observations. We find a significant improvement in the correlation between the spectrometer OH and SABER temperatures by interpolating the latter to constant density surfaces determined using a meteor radar.

Citation: Reid, I. M., Spargo, A. J., Woithe, J. M., Klekociuk, A. R., Younger, J. P., and Sivjee, G. G.: Seasonal MLT-region nightglow intensities, temperatures, and emission heights at a Southern Hemisphere midlatitude site, Ann. Geophys., 35, 567-582, doi:10.5194/angeo-35-567-2017, 2017.
Publications Copernicus
Download
Short summary
We measured temperatures in the atmosphere at heights near 90 km using nightglow emissions and compared them with satellite measurements and with measurements made with a meteor radar. We found good agreement between the techniques, which improved when we used the meteor radar and satellite data to measure densities at two heights separated by about 10 km to estimate the nightglow emission height.
We measured temperatures in the atmosphere at heights near 90 km using nightglow emissions and...
Share