Rocket measurements of positive ions during polar mesosphere winter echo conditions
International audience 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 absorp...
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ftccsdartic:oai:HAL:hal-00297197v1 2023-11-12T04:01:05+01:00 Rocket measurements of positive ions during polar mesosphere winter echo conditions Brattli, A. Blix, T. A. Lie-Svendsen, O. Hoppe, U.-P. Lübken, F.-J. Rapp, M. Singer, W. Latteck, R. Friedrich, M. Norwegian Defence Research Establishment (FFI) Leibniz-Institute of Atmospheric Physics (AIP) Institute of Communication Networks and Satellite Communications 2006-12-07 https://hal.science/hal-00297197 https://hal.science/hal-00297197/document https://hal.science/hal-00297197/file/acp-6-5515-2006.pdf en eng HAL CCSD European Geosciences Union hal-00297197 https://hal.science/hal-00297197 https://hal.science/hal-00297197/document https://hal.science/hal-00297197/file/acp-6-5515-2006.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00297197 Atmospheric Chemistry and Physics, 2006, 6 (12), pp.5515-5524 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2006 ftccsdartic 2023-10-21T23:16:09Z International audience 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 10 10 m ?3 , in the region where PMWE were observed. The density measurements were analyzed with the wavelet transform technique. At large length scales, ~10 3 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 10 2 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 Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Andøya ENVELOPE(13.982,13.982,68.185,68.185) Faraday ENVELOPE(-64.256,-64.256,-65.246,-65.246) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Brattli, A. Blix, T. A. Lie-Svendsen, O. 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 |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience 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 10 10 m ?3 , in the region where PMWE were observed. The density measurements were analyzed with the wavelet transform technique. At large length scales, ~10 3 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 10 2 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. |
author2 |
Norwegian Defence Research Establishment (FFI) Leibniz-Institute of Atmospheric Physics (AIP) Institute of Communication Networks and Satellite Communications |
format |
Article in Journal/Newspaper |
author |
Brattli, A. Blix, T. A. Lie-Svendsen, O. Hoppe, U.-P. Lübken, F.-J. Rapp, M. Singer, W. Latteck, R. Friedrich, M. |
author_facet |
Brattli, A. Blix, T. A. Lie-Svendsen, O. 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 |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-00297197 https://hal.science/hal-00297197/document https://hal.science/hal-00297197/file/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_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00297197 Atmospheric Chemistry and Physics, 2006, 6 (12), pp.5515-5524 |
op_relation |
hal-00297197 https://hal.science/hal-00297197 https://hal.science/hal-00297197/document https://hal.science/hal-00297197/file/acp-6-5515-2006.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782329706487480320 |