Observations of in-situ generated gravity waves during a stratospheric temperature enhancement (STE) event A. J. Gerrard1, Y. Bhattacharya1, and J. P. Thayer2 1Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin Luther King Jr. Boulevard, Newark, NJ 07102-1982, USA 2Aerospace Engineering Sciences, University of Colorado, 429 UCB, Boulder, CO 80309-0429, USA
Abstract. Evidence for in situ generated atmospheric gravity waves associated with a
stratospheric temperature enhancement (STE) are presented. The signatures of
two sets of gravity waves are observed by molecular-aerosol lidar in
conjunction with the early December 2000 STE event above Sondrestrom,
Greenland. The first set of gravity waves shows downward phase progression
with a vertical wavelength of ~8 km while the second set shows upward
phase progression with a vertical wavelength of ~9 km. With estimates
of the background wind fields from synoptic analyses, the various intrinsic
gravity wave parameters of these two wave structures are found. The observed
wave features compare well to previous numerical modeling predictions.
Citation: Gerrard, A. J., Bhattacharya, Y., and Thayer, J. P.: Observations of in-situ generated gravity waves during a stratospheric temperature enhancement (STE) event, Atmos. Chem. Phys., 11, 11913-11917, doi:10.5194/acp-11-11913-2011, 2011.