Seasonal Variation in Propagation Directions of Acoustic Gravity Waves in the Thermosphere

0468556 - ÚFA 2017 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Fišer, Jiří - Chum, Jaroslav
Seasonal Variation in Propagation Directions of Acoustic Gravity Waves in the Thermosphere.
WDS´16 Proceedings of Contributed Papers - Physics. Praha: Matfyzpress, 2016 - (Šafránková, J.; Pavlů, J.), s. 92-96. ISBN 978-80-7378-333-4.
[Week of Doctoral Students 2016. Annual Student Conference /25./. Prague (CZ), 07.06.2016-09.06.2016]
Grant CEP: GA ČR(CZ) GC15-07281J
Institucionální podpora: RVO:68378289
Klíčová slova: thermosphere * acoustics gravity waves * ionosphere * HF Doppler sounding
Kód oboru RIV: DG - Vědy o atmosféře, meteorologie

We investigate seasonal behaviour of acoustic gravity waves (AGWs) in
the thermosphere. For this purpose, measurements of HF Doppler sounding stations
operated by or in cooperation with our institute are used. These measurements
are compared with previously reported studies which employed different techniques
of ionospheric observations. The propagation of AGWs is found to have strong
seasonal dependence. AGWs in summer generally tend to propagate poleward in
summer and equatorward in winter.
Trvalý link: http://hdl.handle.net/11104/0266370