Seasonal variations of gravity wave activity in the lower stratosphere over an Antarctic Peninsula station
An 8 year series of 965 high-resolution radiosonde soundings over Rothera (67 degrees S, 68 degrees W) on the Antarctic Peninsula are used to study gravity wave characteristics in the lower stratosphere. The gravity wave energy is shown to have a seasonal variation with peaks at the equinoxes; the l...
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American Geophysical Union
2011
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ftnerc:oai:nora.nerc.ac.uk:15142 2023-05-15T13:45:11+02:00 Seasonal variations of gravity wave activity in the lower stratosphere over an Antarctic Peninsula station Moffat-Griffin, Tracy Hibbins, Robert E. Jarvis, Martin J. Colwell, Steve R. 2011-07-27 text http://nora.nerc.ac.uk/id/eprint/15142/ https://nora.nerc.ac.uk/id/eprint/15142/1/jgrd16996.pdf https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2010JD015349 en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/15142/1/jgrd16996.pdf Moffat-Griffin, Tracy orcid:0000-0002-9670-6715 Hibbins, Robert E. orcid:0000-0002-6867-2255 Jarvis, Martin J.; Colwell, Steve R. 2011 Seasonal variations of gravity wave activity in the lower stratosphere over an Antarctic Peninsula station. Journal of Geophysical Research, 116 (D14), D14111. 10, pp. https://doi.org/10.1029/2010JD015349 <https://doi.org/10.1029/2010JD015349> Atmospheric Sciences Publication - Article PeerReviewed 2011 ftnerc https://doi.org/10.1029/2010JD015349 2023-02-04T19:29:40Z An 8 year series of 965 high-resolution radiosonde soundings over Rothera (67 degrees S, 68 degrees W) on the Antarctic Peninsula are used to study gravity wave characteristics in the lower stratosphere. The gravity wave energy is shown to have a seasonal variation with peaks at the equinoxes; the largest peak is around the spring equinox. During the winter months and extending into the spring, there is both an enhancement in the downward propagating wave activity and a reduction in the amount of critical-level filtering of upward propagating mountain waves. The horizontal propagation directions of the gravity waves were determined using hodographs. It was found that there is a predisposition toward northward and westward propagating waves above Rothera. This is in agreement with previous observations of gravity wave momentum flux in the wintertime mesosphere over Rothera. These results are consistent with a scenario whereby the stratospheric gravity wavefield above Rothera is determined by a combination of wind flow over topography-generating waves from below, and sources such as the edge of the polar stratospheric vortex-generating waves from above, especially during winter and spring. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula Rothera ENVELOPE(-68.130,-68.130,-67.568,-67.568) Journal of Geophysical Research 116 D14 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Atmospheric Sciences |
spellingShingle |
Atmospheric Sciences Moffat-Griffin, Tracy Hibbins, Robert E. Jarvis, Martin J. Colwell, Steve R. Seasonal variations of gravity wave activity in the lower stratosphere over an Antarctic Peninsula station |
topic_facet |
Atmospheric Sciences |
description |
An 8 year series of 965 high-resolution radiosonde soundings over Rothera (67 degrees S, 68 degrees W) on the Antarctic Peninsula are used to study gravity wave characteristics in the lower stratosphere. The gravity wave energy is shown to have a seasonal variation with peaks at the equinoxes; the largest peak is around the spring equinox. During the winter months and extending into the spring, there is both an enhancement in the downward propagating wave activity and a reduction in the amount of critical-level filtering of upward propagating mountain waves. The horizontal propagation directions of the gravity waves were determined using hodographs. It was found that there is a predisposition toward northward and westward propagating waves above Rothera. This is in agreement with previous observations of gravity wave momentum flux in the wintertime mesosphere over Rothera. These results are consistent with a scenario whereby the stratospheric gravity wavefield above Rothera is determined by a combination of wind flow over topography-generating waves from below, and sources such as the edge of the polar stratospheric vortex-generating waves from above, especially during winter and spring. |
format |
Article in Journal/Newspaper |
author |
Moffat-Griffin, Tracy Hibbins, Robert E. Jarvis, Martin J. Colwell, Steve R. |
author_facet |
Moffat-Griffin, Tracy Hibbins, Robert E. Jarvis, Martin J. Colwell, Steve R. |
author_sort |
Moffat-Griffin, Tracy |
title |
Seasonal variations of gravity wave activity in the lower stratosphere over an Antarctic Peninsula station |
title_short |
Seasonal variations of gravity wave activity in the lower stratosphere over an Antarctic Peninsula station |
title_full |
Seasonal variations of gravity wave activity in the lower stratosphere over an Antarctic Peninsula station |
title_fullStr |
Seasonal variations of gravity wave activity in the lower stratosphere over an Antarctic Peninsula station |
title_full_unstemmed |
Seasonal variations of gravity wave activity in the lower stratosphere over an Antarctic Peninsula station |
title_sort |
seasonal variations of gravity wave activity in the lower stratosphere over an antarctic peninsula station |
publisher |
American Geophysical Union |
publishDate |
2011 |
url |
http://nora.nerc.ac.uk/id/eprint/15142/ https://nora.nerc.ac.uk/id/eprint/15142/1/jgrd16996.pdf https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2010JD015349 |
long_lat |
ENVELOPE(-68.130,-68.130,-67.568,-67.568) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Rothera |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Rothera |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_relation |
https://nora.nerc.ac.uk/id/eprint/15142/1/jgrd16996.pdf Moffat-Griffin, Tracy orcid:0000-0002-9670-6715 Hibbins, Robert E. orcid:0000-0002-6867-2255 Jarvis, Martin J.; Colwell, Steve R. 2011 Seasonal variations of gravity wave activity in the lower stratosphere over an Antarctic Peninsula station. Journal of Geophysical Research, 116 (D14), D14111. 10, pp. https://doi.org/10.1029/2010JD015349 <https://doi.org/10.1029/2010JD015349> |
op_doi |
https://doi.org/10.1029/2010JD015349 |
container_title |
Journal of Geophysical Research |
container_volume |
116 |
container_issue |
D14 |
_version_ |
1766215809547370496 |