Interstation correlation of high-latitude lower-stratosphere gravity wave activity: Evidence for planetary wave modulation of gravity waves over Antarctica
Copyright 2004 by the American Geophysical Union Four years of operational radiosonde balloon flights, from three Australian stations in eastern Antarctica (Casey, 66.3°S, 110.0°E; Davis, 68.6°S, 78.0°E; and Mawson, 67.6°S, 62.9°E) are analyzed to derive lower-stratosphere (12–20 km altitude) gravit...
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/18114 2023-05-15T13:34:44+02:00 Interstation correlation of high-latitude lower-stratosphere gravity wave activity: Evidence for planetary wave modulation of gravity waves over Antarctica Innis, J. Klekociuk, A. Vincent, R. 2004 http://hdl.handle.net/2440/18114 https://doi.org/10.1029/2004JD004961 en eng Amer Geophysical Union Journal of Geophysical Research, 2004; 109(17):D17106-1-D17106-14 0148-0227 2169-8996 http://hdl.handle.net/2440/18114 doi:10.1029/2004JD004961 Klekociuk, A. [0000-0003-3335-0034] Vincent, R. [0000-0001-6559-6544] http://www.agu.org/pubs/crossref/2004/2004JD004961.shtml gravity waves planetary waves high-latitude stratosphere Journal article 2004 ftunivadelaidedl https://doi.org/10.1029/2004JD004961 2023-02-06T06:59:52Z Copyright 2004 by the American Geophysical Union Four years of operational radiosonde balloon flights, from three Australian stations in eastern Antarctica (Casey, 66.3°S, 110.0°E; Davis, 68.6°S, 78.0°E; and Mawson, 67.6°S, 62.9°E) are analyzed to derive lower-stratosphere (12–20 km altitude) gravity wave information from perturbations in wind and temperature. Gravity wave activity and seasonal behavior was found to be similar to that seen in earlier studies from Antarctica. Interstation comparisons of zonal wind and gravity wave activity showed very high correlations throughout the entire data set, between Mawson and Davis stations (∼600 km distant), with a lag near 0.5 days. The correlations between Casey and Davis (1400 km apart) were lower but still significant, with a lag near 1 day. There is no significant correlation between stratospheric gravity wave activity and surface winds. Our results suggest a pattern of winds and waves moving eastward over the stations with a speed near 15 m s−1. As this is comparable to planetary wave speeds, we interpret our results as being evidence for a significant planetary wave–induced modulation of the zonal wind and the gravity wave field, although we are unable to identify the mechanism by which this operates. Our work suggests that the high-latitude lower-stratosphere gravity wave fields are relatively uniform on spatial scales of 500–1000 km and on timescales of around 0.5–1 days. Innis, J. L., A. R. Klekociuk, and R. A. Vincent Article in Journal/Newspaper Antarc* Antarctica The University of Adelaide: Digital Library Journal of Geophysical Research 109 D17 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
gravity waves planetary waves high-latitude stratosphere |
spellingShingle |
gravity waves planetary waves high-latitude stratosphere Innis, J. Klekociuk, A. Vincent, R. Interstation correlation of high-latitude lower-stratosphere gravity wave activity: Evidence for planetary wave modulation of gravity waves over Antarctica |
topic_facet |
gravity waves planetary waves high-latitude stratosphere |
description |
Copyright 2004 by the American Geophysical Union Four years of operational radiosonde balloon flights, from three Australian stations in eastern Antarctica (Casey, 66.3°S, 110.0°E; Davis, 68.6°S, 78.0°E; and Mawson, 67.6°S, 62.9°E) are analyzed to derive lower-stratosphere (12–20 km altitude) gravity wave information from perturbations in wind and temperature. Gravity wave activity and seasonal behavior was found to be similar to that seen in earlier studies from Antarctica. Interstation comparisons of zonal wind and gravity wave activity showed very high correlations throughout the entire data set, between Mawson and Davis stations (∼600 km distant), with a lag near 0.5 days. The correlations between Casey and Davis (1400 km apart) were lower but still significant, with a lag near 1 day. There is no significant correlation between stratospheric gravity wave activity and surface winds. Our results suggest a pattern of winds and waves moving eastward over the stations with a speed near 15 m s−1. As this is comparable to planetary wave speeds, we interpret our results as being evidence for a significant planetary wave–induced modulation of the zonal wind and the gravity wave field, although we are unable to identify the mechanism by which this operates. Our work suggests that the high-latitude lower-stratosphere gravity wave fields are relatively uniform on spatial scales of 500–1000 km and on timescales of around 0.5–1 days. Innis, J. L., A. R. Klekociuk, and R. A. Vincent |
format |
Article in Journal/Newspaper |
author |
Innis, J. Klekociuk, A. Vincent, R. |
author_facet |
Innis, J. Klekociuk, A. Vincent, R. |
author_sort |
Innis, J. |
title |
Interstation correlation of high-latitude lower-stratosphere gravity wave activity: Evidence for planetary wave modulation of gravity waves over Antarctica |
title_short |
Interstation correlation of high-latitude lower-stratosphere gravity wave activity: Evidence for planetary wave modulation of gravity waves over Antarctica |
title_full |
Interstation correlation of high-latitude lower-stratosphere gravity wave activity: Evidence for planetary wave modulation of gravity waves over Antarctica |
title_fullStr |
Interstation correlation of high-latitude lower-stratosphere gravity wave activity: Evidence for planetary wave modulation of gravity waves over Antarctica |
title_full_unstemmed |
Interstation correlation of high-latitude lower-stratosphere gravity wave activity: Evidence for planetary wave modulation of gravity waves over Antarctica |
title_sort |
interstation correlation of high-latitude lower-stratosphere gravity wave activity: evidence for planetary wave modulation of gravity waves over antarctica |
publisher |
Amer Geophysical Union |
publishDate |
2004 |
url |
http://hdl.handle.net/2440/18114 https://doi.org/10.1029/2004JD004961 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
http://www.agu.org/pubs/crossref/2004/2004JD004961.shtml |
op_relation |
Journal of Geophysical Research, 2004; 109(17):D17106-1-D17106-14 0148-0227 2169-8996 http://hdl.handle.net/2440/18114 doi:10.1029/2004JD004961 Klekociuk, A. [0000-0003-3335-0034] Vincent, R. [0000-0001-6559-6544] |
op_doi |
https://doi.org/10.1029/2004JD004961 |
container_title |
Journal of Geophysical Research |
container_volume |
109 |
container_issue |
D17 |
_version_ |
1766056687294218240 |