Interhemispheric structure and variability of the 5-day planetary wave from meteor radar wind measurements
A study of the quasi-5-day wave (5DW) was performed using meteor radars at conjugate latitudes in the Northern and Southern hemispheres. These radars are located at Esrange, Sweden (68° N) and Juliusruh, Germany (55° N) in the Northern Hemisphere, and at Tierra del Fuego, Argentina (54° S) and Rothe...
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ftdoajarticles:oai:doaj.org/article:f55bad161e73423ca405319598a8a262 2023-05-15T14:03:39+02:00 Interhemispheric structure and variability of the 5-day planetary wave from meteor radar wind measurements H. Iimura D. C. Fritts D. Janches W. Singer N. J. Mitchell 2015-11-01T00:00:00Z https://doi.org/10.5194/angeo-33-1349-2015 https://doaj.org/article/f55bad161e73423ca405319598a8a262 EN eng Copernicus Publications https://www.ann-geophys.net/33/1349/2015/angeo-33-1349-2015.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-33-1349-2015 0992-7689 1432-0576 https://doaj.org/article/f55bad161e73423ca405319598a8a262 Annales Geophysicae, Vol 33, Pp 1349-1359 (2015) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2015 ftdoajarticles https://doi.org/10.5194/angeo-33-1349-2015 2022-12-31T02:22:49Z A study of the quasi-5-day wave (5DW) was performed using meteor radars at conjugate latitudes in the Northern and Southern hemispheres. These radars are located at Esrange, Sweden (68° N) and Juliusruh, Germany (55° N) in the Northern Hemisphere, and at Tierra del Fuego, Argentina (54° S) and Rothera Station, Antarctica (68° S) in the Southern Hemisphere. The analysis was performed using data collected during simultaneous measurements by the four radars from June 2010 to December 2012 at altitudes from 84 to 96 km. The 5DW was found to exhibit significant short-term, seasonal, and interannual variability at all sites. Typical events had planetary wave periods that ranged between 4 and 7 days, durations of only a few cycles, and infrequent strongly peaked variances and covariances. Winds exhibited rotary structures that varied strongly among sites and between events, and maximum amplitudes up to ~ 20 m s −1 . Mean horizontal velocity covariances tended to be largely negative at all sites throughout the interval studied. Article in Journal/Newspaper Antarc* Antarctica Tierra del Fuego Directory of Open Access Journals: DOAJ Articles Argentina Esrange ENVELOPE(21.117,21.117,67.883,67.883) Rothera ENVELOPE(-68.130,-68.130,-67.568,-67.568) Rothera Station ENVELOPE(-68.120,-68.120,-67.569,-67.569) Annales Geophysicae 33 11 1349 1359 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 H. Iimura D. C. Fritts D. Janches W. Singer N. J. Mitchell Interhemispheric structure and variability of the 5-day planetary wave from meteor radar wind measurements |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
A study of the quasi-5-day wave (5DW) was performed using meteor radars at conjugate latitudes in the Northern and Southern hemispheres. These radars are located at Esrange, Sweden (68° N) and Juliusruh, Germany (55° N) in the Northern Hemisphere, and at Tierra del Fuego, Argentina (54° S) and Rothera Station, Antarctica (68° S) in the Southern Hemisphere. The analysis was performed using data collected during simultaneous measurements by the four radars from June 2010 to December 2012 at altitudes from 84 to 96 km. The 5DW was found to exhibit significant short-term, seasonal, and interannual variability at all sites. Typical events had planetary wave periods that ranged between 4 and 7 days, durations of only a few cycles, and infrequent strongly peaked variances and covariances. Winds exhibited rotary structures that varied strongly among sites and between events, and maximum amplitudes up to ~ 20 m s −1 . Mean horizontal velocity covariances tended to be largely negative at all sites throughout the interval studied. |
format |
Article in Journal/Newspaper |
author |
H. Iimura D. C. Fritts D. Janches W. Singer N. J. Mitchell |
author_facet |
H. Iimura D. C. Fritts D. Janches W. Singer N. J. Mitchell |
author_sort |
H. Iimura |
title |
Interhemispheric structure and variability of the 5-day planetary wave from meteor radar wind measurements |
title_short |
Interhemispheric structure and variability of the 5-day planetary wave from meteor radar wind measurements |
title_full |
Interhemispheric structure and variability of the 5-day planetary wave from meteor radar wind measurements |
title_fullStr |
Interhemispheric structure and variability of the 5-day planetary wave from meteor radar wind measurements |
title_full_unstemmed |
Interhemispheric structure and variability of the 5-day planetary wave from meteor radar wind measurements |
title_sort |
interhemispheric structure and variability of the 5-day planetary wave from meteor radar wind measurements |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/angeo-33-1349-2015 https://doaj.org/article/f55bad161e73423ca405319598a8a262 |
long_lat |
ENVELOPE(21.117,21.117,67.883,67.883) ENVELOPE(-68.130,-68.130,-67.568,-67.568) ENVELOPE(-68.120,-68.120,-67.569,-67.569) |
geographic |
Argentina Esrange Rothera Rothera Station |
geographic_facet |
Argentina Esrange Rothera Rothera Station |
genre |
Antarc* Antarctica Tierra del Fuego |
genre_facet |
Antarc* Antarctica Tierra del Fuego |
op_source |
Annales Geophysicae, Vol 33, Pp 1349-1359 (2015) |
op_relation |
https://www.ann-geophys.net/33/1349/2015/angeo-33-1349-2015.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-33-1349-2015 0992-7689 1432-0576 https://doaj.org/article/f55bad161e73423ca405319598a8a262 |
op_doi |
https://doi.org/10.5194/angeo-33-1349-2015 |
container_title |
Annales Geophysicae |
container_volume |
33 |
container_issue |
11 |
container_start_page |
1349 |
op_container_end_page |
1359 |
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