Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/92443
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Radiosonde observations of gravity waves in the lower stratosphere over Davis, Antarctica
Author: Murphy, D.
Alexander, S.
Klekociuk, A.
Love, P.
Vincent, R.
Citation: Journal of Geophysical Research: Atmospheres, 2014; 119(21):11973-11996
Publisher: American Geophysical Union
Issue Date: 2014
ISSN: 2169-897X
2169-8996
Statement of
Responsibility: 
D. J. Murphy, S. P. Alexander, A. R. Klekociuk, P. T. Love, and R. A. Vincent
Abstract: Radiosonde observations made from Davis station, Antarctica, (68.6°S, 78.0°E) between 2001 and 2012 are used to compile a climatology of lower stratosphere inertial gravity wave characteristics. Wavelet analysis extracts single wave packets from the wind and temperature perturbations. Wavelet parameters, combined with linear gravity wave theory, allow for the derivation of a wide range of wave characteristics. Observational filtering associated with this analysis preferentially selects inertial gravity waves with vertical wavelengths less than 2–3 km. The vertical propagation statistics show strong temporal and height variations. The waves propagate close to the horizontal and are strongly advected by the background wind in the wintertime. Notably, around half of the waves observed in the stratosphere above Davis between early May and mid-October propagate downward. This feature is distributed over the observed stratospheric height range. Based on the similarity between the upward and downward propagating waves and on the vertical structure of the nonlinear balance residual in the polar winter stratosphere, it is concluded that a source due to imbalanced flow that is distributed across the winter lower stratosphere best explains the observations. Calculations of kinetic and potential energies and momentum fluxes highlight the potential for variations in results due to different analysis techniques.
Rights: ©2014. American Geophysical Union. All Rights Reserved.
RMID: 0030017644
DOI: 10.1002/2014JD022448
Appears in Collections:IPAS publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.