Radiosonde observations of gravity waves in the lower stratosphere over Davis, Antarctica
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 parame...
Published in: | Journal of Geophysical Research: Atmospheres |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
2014
|
Subjects: | |
Online Access: | http://hdl.handle.net/2440/92443 https://doi.org/10.1002/2014JD022448 |
id |
ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/92443 |
---|---|
record_format |
openpolar |
spelling |
ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/92443 2023-12-17T10:20:09+01:00 Radiosonde observations of gravity waves in the lower stratosphere over Davis, Antarctica Murphy, D. Alexander, S. Klekociuk, A. Love, P. Vincent, R. 2014 http://hdl.handle.net/2440/92443 https://doi.org/10.1002/2014JD022448 en eng American Geophysical Union Journal of Geophysical Research: Atmospheres, 2014; 119(21):11973-11996 2169-897X 2169-8996 http://hdl.handle.net/2440/92443 doi:10.1002/2014JD022448 Klekociuk, A. [0000-0003-3335-0034] Vincent, R. [0000-0001-6559-6544] ©2014. American Geophysical Union. All Rights Reserved. http://dx.doi.org/10.1002/2014jd022448 Journal article 2014 ftunivadelaidedl https://doi.org/10.1002/2014JD02244810.1002/2014jd022448 2023-11-20T23:16:50Z 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. D. J. Murphy, S. P. Alexander, A. R. Klekociuk, P. T. Love, and R. A. Vincent Article in Journal/Newspaper Antarc* Antarctica The University of Adelaide: Digital Library Davis Station ENVELOPE(77.968,77.968,-68.576,-68.576) Davis-Station ENVELOPE(77.968,77.968,-68.576,-68.576) Journal of Geophysical Research: Atmospheres 119 21 11,973 11,996 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
description |
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. D. J. Murphy, S. P. Alexander, A. R. Klekociuk, P. T. Love, and R. A. Vincent |
format |
Article in Journal/Newspaper |
author |
Murphy, D. Alexander, S. Klekociuk, A. Love, P. Vincent, R. |
spellingShingle |
Murphy, D. Alexander, S. Klekociuk, A. Love, P. Vincent, R. Radiosonde observations of gravity waves in the lower stratosphere over Davis, Antarctica |
author_facet |
Murphy, D. Alexander, S. Klekociuk, A. Love, P. Vincent, R. |
author_sort |
Murphy, D. |
title |
Radiosonde observations of gravity waves in the lower stratosphere over Davis, Antarctica |
title_short |
Radiosonde observations of gravity waves in the lower stratosphere over Davis, Antarctica |
title_full |
Radiosonde observations of gravity waves in the lower stratosphere over Davis, Antarctica |
title_fullStr |
Radiosonde observations of gravity waves in the lower stratosphere over Davis, Antarctica |
title_full_unstemmed |
Radiosonde observations of gravity waves in the lower stratosphere over Davis, Antarctica |
title_sort |
radiosonde observations of gravity waves in the lower stratosphere over davis, antarctica |
publisher |
American Geophysical Union |
publishDate |
2014 |
url |
http://hdl.handle.net/2440/92443 https://doi.org/10.1002/2014JD022448 |
long_lat |
ENVELOPE(77.968,77.968,-68.576,-68.576) ENVELOPE(77.968,77.968,-68.576,-68.576) |
geographic |
Davis Station Davis-Station |
geographic_facet |
Davis Station Davis-Station |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
http://dx.doi.org/10.1002/2014jd022448 |
op_relation |
Journal of Geophysical Research: Atmospheres, 2014; 119(21):11973-11996 2169-897X 2169-8996 http://hdl.handle.net/2440/92443 doi:10.1002/2014JD022448 Klekociuk, A. [0000-0003-3335-0034] Vincent, R. [0000-0001-6559-6544] |
op_rights |
©2014. American Geophysical Union. All Rights Reserved. |
op_doi |
https://doi.org/10.1002/2014JD02244810.1002/2014jd022448 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
119 |
container_issue |
21 |
container_start_page |
11,973 |
op_container_end_page |
11,996 |
_version_ |
1785589283191521280 |