Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8139340 | Journal of Atmospheric and Solar-Terrestrial Physics | 2018 | 39 Pages |
Abstract
The results are also compared with co-located observations of the OH(6-2)- and O2b(0-1)-transitions by means of spectrometer observations (TANGOO instrument, Tilting-filter spectrometer for Atmospheric Nocturnal Ground-based Oxygen & hydrOxyl emission measurements) performed from 2013 until 2016â¯at Oberpfaffenhofen (48.08° N, 11.27° E), Germany. For approximately 40% of all wave events observed with GRIPS in the period range from 0.25â¯h to 17â¯h, a quantitative estimate of the phase relationship between the OH(3-1) and OH(4-2) intensities can be retrieved from the spectra allowing derivation of vertical wavelengths. The retrieval performs best for wave periods below two hours (80% success rate) and worse for periods above ten hours (successful in less than 10% of the cases). The average wavelength determined from 102 events amounts to 22.9â¯km (1Ï: 9.0â¯km). The corresponding mean wavelength determined from the TANGOO observations amounts to 22.6â¯kmâ¯Â±â¯10.5â¯km, if a mean separation of 6.5â¯km is assumed for the height difference between the OH(6-2) and O2b(0-1)-transitions.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geophysics
Authors
Carsten Schmidt, Tim Dunker, Sabrina Lichtenstern, Jürgen Scheer, Sabine Wüst, Ulf-Peter Hoppe, Michael Bittner,