Evidence for critical level filtering of atmospheric gravity waves. Geophys
Abstract. Radiosonde measurements were used to inves-tigate gravity wave activity within the lower stratosphere above the Canadian High Arctic. The sondes were launched from the weather station at Eureka (80øN,86øW) on Ellesm-ere Island. Gravity waves were detected by the fluctuations they induced i...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.554.8346 2023-05-15T15:02:55+02:00 Evidence for critical level filtering of atmospheric gravity waves. Geophys James A. Whiteway Thomas J. Duck The Pennsylvania State University CiteSeerX Archives 1996 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.554.8346 http://aolab.phys.dal.ca/publications/grl1996a.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.554.8346 http://aolab.phys.dal.ca/publications/grl1996a.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://aolab.phys.dal.ca/publications/grl1996a.pdf text 1996 ftciteseerx 2016-01-08T11:43:52Z Abstract. Radiosonde measurements were used to inves-tigate gravity wave activity within the lower stratosphere above the Canadian High Arctic. The sondes were launched from the weather station at Eureka (80øN,86øW) on Ellesm-ere Island. Gravity waves were detected by the fluctuations they induced in temperature and the associated perturbation potential energy density was used to gauge the amount of wave activity. It was found that, over a 15 month period, there were isolated episodes of enhanced wave activity rather than any distinct seasonal cycle. Profiles of wind velocity were also measured and used here to show that periods of high wave activity occurred only when there would be no (or very little) critical level filtering of the stationary waves generated by flow over the rough terrain in the vicinity of Eureka. It was also found that the potential energy spectral density was enhanced at all resolvable scales during the periods of high wave activity. Text Arctic Unknown Arctic Eureka ENVELOPE(-85.940,-85.940,79.990,79.990) |
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Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Abstract. Radiosonde measurements were used to inves-tigate gravity wave activity within the lower stratosphere above the Canadian High Arctic. The sondes were launched from the weather station at Eureka (80øN,86øW) on Ellesm-ere Island. Gravity waves were detected by the fluctuations they induced in temperature and the associated perturbation potential energy density was used to gauge the amount of wave activity. It was found that, over a 15 month period, there were isolated episodes of enhanced wave activity rather than any distinct seasonal cycle. Profiles of wind velocity were also measured and used here to show that periods of high wave activity occurred only when there would be no (or very little) critical level filtering of the stationary waves generated by flow over the rough terrain in the vicinity of Eureka. It was also found that the potential energy spectral density was enhanced at all resolvable scales during the periods of high wave activity. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
James A. Whiteway Thomas J. Duck |
spellingShingle |
James A. Whiteway Thomas J. Duck Evidence for critical level filtering of atmospheric gravity waves. Geophys |
author_facet |
James A. Whiteway Thomas J. Duck |
author_sort |
James A. Whiteway |
title |
Evidence for critical level filtering of atmospheric gravity waves. Geophys |
title_short |
Evidence for critical level filtering of atmospheric gravity waves. Geophys |
title_full |
Evidence for critical level filtering of atmospheric gravity waves. Geophys |
title_fullStr |
Evidence for critical level filtering of atmospheric gravity waves. Geophys |
title_full_unstemmed |
Evidence for critical level filtering of atmospheric gravity waves. Geophys |
title_sort |
evidence for critical level filtering of atmospheric gravity waves. geophys |
publishDate |
1996 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.554.8346 http://aolab.phys.dal.ca/publications/grl1996a.pdf |
long_lat |
ENVELOPE(-85.940,-85.940,79.990,79.990) |
geographic |
Arctic Eureka |
geographic_facet |
Arctic Eureka |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
http://aolab.phys.dal.ca/publications/grl1996a.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.554.8346 http://aolab.phys.dal.ca/publications/grl1996a.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766334823027179520 |