Rocket measurements of positive ions during polar mesosphere winter echo conditions
On 18 January 2005, two small, instrumented rockets were launched from Andøya Rocket Range (69.3° N, 16° E) during conditions with Polar Mesosphere Winter Echoes (PMWE). Each of the rockets was equipped with a Positive Ion Probe (PIP) and a Faraday rotation/differential absorption experiment, and wa...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00048696 2023-05-15T13:25:41+02:00 Rocket measurements of positive ions during polar mesosphere winter echo conditions Brattli, A. Blix, T. A. Lie-Svendsen, Ø. Hoppe, U.-P. Lübken, F.-J. Rapp, M. Singer, W. Latteck, R. Friedrich, M. 2006-12 electronic https://doi.org/10.5194/acp-6-5515-2006 https://noa.gwlb.de/receive/cop_mods_00048696 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00048316/acp-6-5515-2006.pdf https://acp.copernicus.org/articles/6/5515/2006/acp-6-5515-2006.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-6-5515-2006 https://noa.gwlb.de/receive/cop_mods_00048696 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00048316/acp-6-5515-2006.pdf https://acp.copernicus.org/articles/6/5515/2006/acp-6-5515-2006.pdf https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2006 ftnonlinearchiv https://doi.org/10.5194/acp-6-5515-2006 2022-02-08T22:37:53Z On 18 January 2005, two small, instrumented rockets were launched from Andøya Rocket Range (69.3° N, 16° E) during conditions with Polar Mesosphere Winter Echoes (PMWE). Each of the rockets was equipped with a Positive Ion Probe (PIP) and a Faraday rotation/differential absorption experiment, and was launched as part of a salvo of meteorological rockets measuring temperature and wind using falling spheres and chaff. Layers of PMWE were detected between 55 and 77 km by the 53.5 MHz ALWIN radar. The rockets were launched during a solar proton event, and measured extremely high ion densities, of order 1010 m−3, in the region where PMWE were observed. The density measurements were analyzed with the wavelet transform technique. At large length scales, ~103 m, the power spectral density can be fitted with a k−3 wave number dependence, consistent with saturated gravity waves. Outside the PMWE layers the k−3 spectrum extends down to approximately 102 m where the fluctuations are quickly damped and disappear into the instrumental noise. Inside the PMWE layers the spectrum at smaller length scales is well fitted with a k−5/3 dependence over two decades of scales. The PMWE are therefore clearly indicative of turbulence, and the data are consistent with the turbulent dissipation of breaking gravity waves. We estimate a lower limit for the turbulent energy dissipation rate of about 10−2 W/kg in the upper (72 km) layer. Article in Journal/Newspaper Andøya Niedersächsisches Online-Archiv NOA Andøya ENVELOPE(13.982,13.982,68.185,68.185) Faraday ENVELOPE(-64.256,-64.256,-65.246,-65.246) Atmospheric Chemistry and Physics 6 12 5515 5524 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Brattli, A. Blix, T. A. Lie-Svendsen, Ø. Hoppe, U.-P. Lübken, F.-J. Rapp, M. Singer, W. Latteck, R. Friedrich, M. Rocket measurements of positive ions during polar mesosphere winter echo conditions |
topic_facet |
article Verlagsveröffentlichung |
description |
On 18 January 2005, two small, instrumented rockets were launched from Andøya Rocket Range (69.3° N, 16° E) during conditions with Polar Mesosphere Winter Echoes (PMWE). Each of the rockets was equipped with a Positive Ion Probe (PIP) and a Faraday rotation/differential absorption experiment, and was launched as part of a salvo of meteorological rockets measuring temperature and wind using falling spheres and chaff. Layers of PMWE were detected between 55 and 77 km by the 53.5 MHz ALWIN radar. The rockets were launched during a solar proton event, and measured extremely high ion densities, of order 1010 m−3, in the region where PMWE were observed. The density measurements were analyzed with the wavelet transform technique. At large length scales, ~103 m, the power spectral density can be fitted with a k−3 wave number dependence, consistent with saturated gravity waves. Outside the PMWE layers the k−3 spectrum extends down to approximately 102 m where the fluctuations are quickly damped and disappear into the instrumental noise. Inside the PMWE layers the spectrum at smaller length scales is well fitted with a k−5/3 dependence over two decades of scales. The PMWE are therefore clearly indicative of turbulence, and the data are consistent with the turbulent dissipation of breaking gravity waves. We estimate a lower limit for the turbulent energy dissipation rate of about 10−2 W/kg in the upper (72 km) layer. |
format |
Article in Journal/Newspaper |
author |
Brattli, A. Blix, T. A. Lie-Svendsen, Ø. Hoppe, U.-P. Lübken, F.-J. Rapp, M. Singer, W. Latteck, R. Friedrich, M. |
author_facet |
Brattli, A. Blix, T. A. Lie-Svendsen, Ø. Hoppe, U.-P. Lübken, F.-J. Rapp, M. Singer, W. Latteck, R. Friedrich, M. |
author_sort |
Brattli, A. |
title |
Rocket measurements of positive ions during polar mesosphere winter echo conditions |
title_short |
Rocket measurements of positive ions during polar mesosphere winter echo conditions |
title_full |
Rocket measurements of positive ions during polar mesosphere winter echo conditions |
title_fullStr |
Rocket measurements of positive ions during polar mesosphere winter echo conditions |
title_full_unstemmed |
Rocket measurements of positive ions during polar mesosphere winter echo conditions |
title_sort |
rocket measurements of positive ions during polar mesosphere winter echo conditions |
publisher |
Copernicus Publications |
publishDate |
2006 |
url |
https://doi.org/10.5194/acp-6-5515-2006 https://noa.gwlb.de/receive/cop_mods_00048696 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00048316/acp-6-5515-2006.pdf https://acp.copernicus.org/articles/6/5515/2006/acp-6-5515-2006.pdf |
long_lat |
ENVELOPE(13.982,13.982,68.185,68.185) ENVELOPE(-64.256,-64.256,-65.246,-65.246) |
geographic |
Andøya Faraday |
geographic_facet |
Andøya Faraday |
genre |
Andøya |
genre_facet |
Andøya |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-6-5515-2006 https://noa.gwlb.de/receive/cop_mods_00048696 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00048316/acp-6-5515-2006.pdf https://acp.copernicus.org/articles/6/5515/2006/acp-6-5515-2006.pdf |
op_rights |
https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-6-5515-2006 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
6 |
container_issue |
12 |
container_start_page |
5515 |
op_container_end_page |
5524 |
_version_ |
1766387270173065216 |