Articles | Volume 16, issue 14
Research article
28 Jul 2016
Research article |  | 28 Jul 2016

Stratospheric gravity waves at Southern Hemisphere orographic hotspots: 2003–2014 AIRS/Aqua observations

Lars Hoffmann, Alison W. Grimsdell, and M. Joan Alexander

Data sets

AIRS/Aqua L1B Infrared (IR) geolocated and calibrated radiances V005 AIRS Science Team/Moustafa Chahine

2-minute Gridded Global Relief Data (ETOPO2) v2 National Geophysical Data Center

The ERA-Interim reanalysis: configuration and performance of the data assimilation system D. P. Dee, S. M. Uppala, A. J. Simmons, P. Berrisford, P. Poli, S. Kobayashi, U. Andrae, M. A. Balmaseda, G. Balsamo, P. Bauer, P. Bechtold, A. C. M. Beljaars, L. van de Berg, J.Bidlot, N. Bormann, C. Delsol, R. Dragani, M. Fuentes, A. J.Geer, L. Haimberger, S. B. Healy, H. Hersbach, E. V. Hólm, L. Isaksen, P. Kållberg, M. Köhler, M. Matricardi, A. P. McNally, B. M. Monge-Sanz, J.-J. Morcrette, B.-K. Park, C.Peubey, P. de Rosnay, C. Tavolato, J.-N. Thépaut, and F. Vitart

Short summary
We present a 12-year record (2003-2014) of stratospheric gravity wave activity at Southern Hemisphere orographic hotspots as observed by the AIRS/Aqua satellite instrument. We introduce a method to discriminate between gravity waves from orographic or other sources and propose a simple model to predict the occurrence of mountain waves using zonal wind thresholds. The prediction model can help to disentangle upper level wind effects from low level source and other influences.
Final-revised paper