Summer sudden Na number density enhancements measured with the ALOMAR Weber Na Lidar
S.1057-1069 We present summer Na-densities and atmospheric temperatures measured 80 to 110 km above the Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR). TheWeber Na Lidar is part of ALOMAR, located at 69 degree N in Norway, 150 km north of the Arctic Circle. The sun does not set her...
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ftfrauneprints:oai:publica.fraunhofer.de:publica/217691 2023-05-15T14:56:20+02:00 Summer sudden Na number density enhancements measured with the ALOMAR Weber Na Lidar Heinrich, D. Nesse, H. Blum, U. Acott, P. Williams, B. Hoppe, U.-P. 2008 https://publica.fraunhofer.de/handle/publica/217691 en eng Annales Geophysicae https://publica.fraunhofer.de/handle/publica/217691 atmospheric composition and structure middle atmosphere - composition and chemistry meteorology and atmosphere dynamics middle atmosphere dynamics instruments and techniques 620 551 journal article 2008 ftfrauneprints 2022-11-01T20:13:24Z S.1057-1069 We present summer Na-densities and atmospheric temperatures measured 80 to 110 km above the Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR). TheWeber Na Lidar is part of ALOMAR, located at 69 degree N in Norway, 150 km north of the Arctic Circle. The sun does not set here during the summer months, and measurements require a narrowband Faraday Anomalous Dispersion Optical Filter (FADOF). We discuss an observed sudden enhancement in the Na number density around 22:00 UT on 1 to 2 June 2006. We compare this observation with previous summer measurements and find a frequent appearance of Na number density enhancements near local midnight. We describe the time of appearance, the altitude distribution, the duration and the strength of these enhancements and compare them to winter observations. We investigate possible formation mechanisms and, as others before, we find a strong link between these Na number density enhancements and sporadic E layers. 26 Nr.5 Article in Journal/Newspaper Arctic Publikationsdatenbank der Fraunhofer-Gesellschaft Alomar ENVELOPE(-67.083,-67.083,-68.133,-68.133) Arctic Faraday ENVELOPE(-64.256,-64.256,-65.246,-65.246) Norway |
institution |
Open Polar |
collection |
Publikationsdatenbank der Fraunhofer-Gesellschaft |
op_collection_id |
ftfrauneprints |
language |
English |
topic |
atmospheric composition and structure middle atmosphere - composition and chemistry meteorology and atmosphere dynamics middle atmosphere dynamics instruments and techniques 620 551 |
spellingShingle |
atmospheric composition and structure middle atmosphere - composition and chemistry meteorology and atmosphere dynamics middle atmosphere dynamics instruments and techniques 620 551 Heinrich, D. Nesse, H. Blum, U. Acott, P. Williams, B. Hoppe, U.-P. Summer sudden Na number density enhancements measured with the ALOMAR Weber Na Lidar |
topic_facet |
atmospheric composition and structure middle atmosphere - composition and chemistry meteorology and atmosphere dynamics middle atmosphere dynamics instruments and techniques 620 551 |
description |
S.1057-1069 We present summer Na-densities and atmospheric temperatures measured 80 to 110 km above the Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR). TheWeber Na Lidar is part of ALOMAR, located at 69 degree N in Norway, 150 km north of the Arctic Circle. The sun does not set here during the summer months, and measurements require a narrowband Faraday Anomalous Dispersion Optical Filter (FADOF). We discuss an observed sudden enhancement in the Na number density around 22:00 UT on 1 to 2 June 2006. We compare this observation with previous summer measurements and find a frequent appearance of Na number density enhancements near local midnight. We describe the time of appearance, the altitude distribution, the duration and the strength of these enhancements and compare them to winter observations. We investigate possible formation mechanisms and, as others before, we find a strong link between these Na number density enhancements and sporadic E layers. 26 Nr.5 |
format |
Article in Journal/Newspaper |
author |
Heinrich, D. Nesse, H. Blum, U. Acott, P. Williams, B. Hoppe, U.-P. |
author_facet |
Heinrich, D. Nesse, H. Blum, U. Acott, P. Williams, B. Hoppe, U.-P. |
author_sort |
Heinrich, D. |
title |
Summer sudden Na number density enhancements measured with the ALOMAR Weber Na Lidar |
title_short |
Summer sudden Na number density enhancements measured with the ALOMAR Weber Na Lidar |
title_full |
Summer sudden Na number density enhancements measured with the ALOMAR Weber Na Lidar |
title_fullStr |
Summer sudden Na number density enhancements measured with the ALOMAR Weber Na Lidar |
title_full_unstemmed |
Summer sudden Na number density enhancements measured with the ALOMAR Weber Na Lidar |
title_sort |
summer sudden na number density enhancements measured with the alomar weber na lidar |
publishDate |
2008 |
url |
https://publica.fraunhofer.de/handle/publica/217691 |
long_lat |
ENVELOPE(-67.083,-67.083,-68.133,-68.133) ENVELOPE(-64.256,-64.256,-65.246,-65.246) |
geographic |
Alomar Arctic Faraday Norway |
geographic_facet |
Alomar Arctic Faraday Norway |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Annales Geophysicae https://publica.fraunhofer.de/handle/publica/217691 |
_version_ |
1766328374234447872 |