First detection of tidal behaviour in polar mesospheric water vapour by ground based microwave spectroscopy
Mesospheric water vapour has been observed above ALOMAR in northern Norway (69° N 16° E) by our group since 1995 using a 22 GHz ground based microwave spectrometer. A new instrument with higher sensitivity, providing a much better time resolution especially in the upper mesosphere, was installed in...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00046053 2023-05-15T17:43:29+02:00 First detection of tidal behaviour in polar mesospheric water vapour by ground based microwave spectroscopy Hallgren, K. Hartogh, P. 2012-04 electronic https://doi.org/10.5194/acp-12-3753-2012 https://noa.gwlb.de/receive/cop_mods_00046053 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00045673/acp-12-3753-2012.pdf https://acp.copernicus.org/articles/12/3753/2012/acp-12-3753-2012.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-12-3753-2012 https://noa.gwlb.de/receive/cop_mods_00046053 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00045673/acp-12-3753-2012.pdf https://acp.copernicus.org/articles/12/3753/2012/acp-12-3753-2012.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2012 ftnonlinearchiv https://doi.org/10.5194/acp-12-3753-2012 2022-02-08T22:39:15Z Mesospheric water vapour has been observed above ALOMAR in northern Norway (69° N 16° E) by our group since 1995 using a 22 GHz ground based microwave spectrometer. A new instrument with higher sensitivity, providing a much better time resolution especially in the upper mesosphere, was installed in May 2008. The time resolution is high enough to provide observations of daily variations in the water vapour mixing ratio. We present the first ground based detections of tidal behaviour in the polar middle atmospheric water vapour distribution. Diurnal and semidiurnal variations of water vapour have been observed and due to the long chemical lifetime of water they are assumed to be caused by changing wind patterns which transport water-rich or poor air into the observed region. The detected tidal behaviour does not follow any single other dynamical field but is instead assumed to be a result of the different wind components. Both the diurnal and semidiurnal amplitude and phase components are resolved. The former shows a stable seasonal behaviour consistent with earlier observations of wind fields and model calculations, whereas the latter appears more complex and no regular behaviour has so far been observed. Article in Journal/Newspaper Northern Norway Niedersächsisches Online-Archiv NOA Alomar ENVELOPE(-67.083,-67.083,-68.133,-68.133) Norway Atmospheric Chemistry and Physics 12 8 3753 3759 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Hallgren, K. Hartogh, P. First detection of tidal behaviour in polar mesospheric water vapour by ground based microwave spectroscopy |
topic_facet |
article Verlagsveröffentlichung |
description |
Mesospheric water vapour has been observed above ALOMAR in northern Norway (69° N 16° E) by our group since 1995 using a 22 GHz ground based microwave spectrometer. A new instrument with higher sensitivity, providing a much better time resolution especially in the upper mesosphere, was installed in May 2008. The time resolution is high enough to provide observations of daily variations in the water vapour mixing ratio. We present the first ground based detections of tidal behaviour in the polar middle atmospheric water vapour distribution. Diurnal and semidiurnal variations of water vapour have been observed and due to the long chemical lifetime of water they are assumed to be caused by changing wind patterns which transport water-rich or poor air into the observed region. The detected tidal behaviour does not follow any single other dynamical field but is instead assumed to be a result of the different wind components. Both the diurnal and semidiurnal amplitude and phase components are resolved. The former shows a stable seasonal behaviour consistent with earlier observations of wind fields and model calculations, whereas the latter appears more complex and no regular behaviour has so far been observed. |
format |
Article in Journal/Newspaper |
author |
Hallgren, K. Hartogh, P. |
author_facet |
Hallgren, K. Hartogh, P. |
author_sort |
Hallgren, K. |
title |
First detection of tidal behaviour in polar mesospheric water vapour by ground based microwave spectroscopy |
title_short |
First detection of tidal behaviour in polar mesospheric water vapour by ground based microwave spectroscopy |
title_full |
First detection of tidal behaviour in polar mesospheric water vapour by ground based microwave spectroscopy |
title_fullStr |
First detection of tidal behaviour in polar mesospheric water vapour by ground based microwave spectroscopy |
title_full_unstemmed |
First detection of tidal behaviour in polar mesospheric water vapour by ground based microwave spectroscopy |
title_sort |
first detection of tidal behaviour in polar mesospheric water vapour by ground based microwave spectroscopy |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/acp-12-3753-2012 https://noa.gwlb.de/receive/cop_mods_00046053 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00045673/acp-12-3753-2012.pdf https://acp.copernicus.org/articles/12/3753/2012/acp-12-3753-2012.pdf |
long_lat |
ENVELOPE(-67.083,-67.083,-68.133,-68.133) |
geographic |
Alomar Norway |
geographic_facet |
Alomar Norway |
genre |
Northern Norway |
genre_facet |
Northern Norway |
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-12-3753-2012 https://noa.gwlb.de/receive/cop_mods_00046053 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00045673/acp-12-3753-2012.pdf https://acp.copernicus.org/articles/12/3753/2012/acp-12-3753-2012.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-12-3753-2012 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
12 |
container_issue |
8 |
container_start_page |
3753 |
op_container_end_page |
3759 |
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1766145579535040512 |