Observations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes
International audience Meteor radars have been used to measure the horizontal winds in the mesosphere and lower thermosphere over Castle Eaton (52° N) in the UK and over Esrange (68° N) in Arctic Sweden. We consider a 16-year data set covering the interval 1988?2004 for the UK and a 6-year data set...
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ftinsu:oai:HAL:hal-00301516v1 2023-11-12T04:11:19+01:00 Observations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes Sandford, D. J. Muller, H. G. Mitchell, N. J. Centre for Space, Atmospheric and Oceanic Science Bath (CSAOS) University of Bath Bath 2006-06-12 https://hal.science/hal-00301516 https://hal.science/hal-00301516/document https://hal.science/hal-00301516/file/acpd-6-4643-2006.pdf en eng HAL CCSD European Geosciences Union hal-00301516 https://hal.science/hal-00301516 https://hal.science/hal-00301516/document https://hal.science/hal-00301516/file/acpd-6-4643-2006.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00301516 Atmospheric Chemistry and Physics Discussions, 2006, 6 (3), pp.4643-4672 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2006 ftinsu 2023-10-25T16:26:59Z International audience Meteor radars have been used to measure the horizontal winds in the mesosphere and lower thermosphere over Castle Eaton (52° N) in the UK and over Esrange (68° N) in Arctic Sweden. We consider a 16-year data set covering the interval 1988?2004 for the UK and a 6-year data set covering the interval 1999?2005 for the Arctic. The signature of the 12.42-h (M 2 ) lunar tide has been identified at both locations. The lunar tide is observed to reach amplitudes as large as 11 ms ?1 . The Arctic radar has an interferometer and so allows investigation of the vertical structure of the lunar tide. At both locations the tide has maximum amplitudes in winter with a second autumnal maximum. The amplitude is found to increase with height over the 80?100 km height range observed. Vertical wavelengths are very variable, ranging from about 15 km in summer to more than 60 km in winter. Comparisons with the Vial and Forbes, 1994 model reveals generally good agreement, except in the case of the summer vertical wavelengths which are observed to be significantly shorter than predicted. Article in Journal/Newspaper Arctic Institut national des sciences de l'Univers: HAL-INSU Arctic Esrange ENVELOPE(21.117,21.117,67.883,67.883) Forbes ENVELOPE(-66.550,-66.550,-67.783,-67.783) |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Sandford, D. J. Muller, H. G. Mitchell, N. J. Observations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Meteor radars have been used to measure the horizontal winds in the mesosphere and lower thermosphere over Castle Eaton (52° N) in the UK and over Esrange (68° N) in Arctic Sweden. We consider a 16-year data set covering the interval 1988?2004 for the UK and a 6-year data set covering the interval 1999?2005 for the Arctic. The signature of the 12.42-h (M 2 ) lunar tide has been identified at both locations. The lunar tide is observed to reach amplitudes as large as 11 ms ?1 . The Arctic radar has an interferometer and so allows investigation of the vertical structure of the lunar tide. At both locations the tide has maximum amplitudes in winter with a second autumnal maximum. The amplitude is found to increase with height over the 80?100 km height range observed. Vertical wavelengths are very variable, ranging from about 15 km in summer to more than 60 km in winter. Comparisons with the Vial and Forbes, 1994 model reveals generally good agreement, except in the case of the summer vertical wavelengths which are observed to be significantly shorter than predicted. |
author2 |
Centre for Space, Atmospheric and Oceanic Science Bath (CSAOS) University of Bath Bath |
format |
Article in Journal/Newspaper |
author |
Sandford, D. J. Muller, H. G. Mitchell, N. J. |
author_facet |
Sandford, D. J. Muller, H. G. Mitchell, N. J. |
author_sort |
Sandford, D. J. |
title |
Observations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes |
title_short |
Observations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes |
title_full |
Observations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes |
title_fullStr |
Observations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes |
title_full_unstemmed |
Observations of lunar tides in the mesosphere and lower thermosphere at Arctic and middle latitudes |
title_sort |
observations of lunar tides in the mesosphere and lower thermosphere at arctic and middle latitudes |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-00301516 https://hal.science/hal-00301516/document https://hal.science/hal-00301516/file/acpd-6-4643-2006.pdf |
long_lat |
ENVELOPE(21.117,21.117,67.883,67.883) ENVELOPE(-66.550,-66.550,-67.783,-67.783) |
geographic |
Arctic Esrange Forbes |
geographic_facet |
Arctic Esrange Forbes |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00301516 Atmospheric Chemistry and Physics Discussions, 2006, 6 (3), pp.4643-4672 |
op_relation |
hal-00301516 https://hal.science/hal-00301516 https://hal.science/hal-00301516/document https://hal.science/hal-00301516/file/acpd-6-4643-2006.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782330456623022080 |