Seasonal evolution of winds, atmospheric tides, and Reynolds stress components in the Southern Hemisphere mesosphere-lower thermosphere in 2019
In this study we explore the seasonal variability of the mean winds and diurnal and semidiurnal tidal amplitude and phases, as well as the Reynolds stress components during 2019, utilizing meteor radars at six Southern Hemisphere locations ranging from midlatitudes to polar latitudes. These include...
Published in: | Annales Geophysicae |
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Main Authors: | , , , , , , , , , , , |
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Language: | English |
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2021
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Online Access: | https://researchportal.bath.ac.uk/en/publications/a05cfeae-62b8-470c-9363-fb7f6b4d7892 https://doi.org/10.5194/angeo-39-1-2021 http://www.scopus.com/inward/record.url?scp=85099032863&partnerID=8YFLogxK |
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ftunivbathcris:oai:purehost.bath.ac.uk:publications/a05cfeae-62b8-470c-9363-fb7f6b4d7892 2024-04-28T08:38:18+00:00 Seasonal evolution of winds, atmospheric tides, and Reynolds stress components in the Southern Hemisphere mesosphere-lower thermosphere in 2019 Stober, Gunter Janches, DIego Matthias, Vivien Fritts, Dave Marino, John Moffat-Griffin, Tracy Baumgarten, Kathrin Lee, Wonseok Murphy, Damian Ha Kim, Yong Mitchell, Nicholas Palo, Scott 2021-01-07 https://researchportal.bath.ac.uk/en/publications/a05cfeae-62b8-470c-9363-fb7f6b4d7892 https://doi.org/10.5194/angeo-39-1-2021 http://www.scopus.com/inward/record.url?scp=85099032863&partnerID=8YFLogxK eng eng https://researchportal.bath.ac.uk/en/publications/a05cfeae-62b8-470c-9363-fb7f6b4d7892 info:eu-repo/semantics/openAccess Stober , G , Janches , DI , Matthias , V , Fritts , D , Marino , J , Moffat-Griffin , T , Baumgarten , K , Lee , W , Murphy , D , Ha Kim , Y , Mitchell , N & Palo , S 2021 , ' Seasonal evolution of winds, atmospheric tides, and Reynolds stress components in the Southern Hemisphere mesosphere-lower thermosphere in 2019 ' , Annales Geophysicae , vol. 39 , no. 1 , pp. 1-29 . https://doi.org/10.5194/angeo-39-1-2021 /dk/atira/pure/subjectarea/asjc/3100/3103 name=Astronomy and Astrophysics /dk/atira/pure/subjectarea/asjc/1900/1907 name=Geology /dk/atira/pure/subjectarea/asjc/1900/1902 name=Atmospheric Science /dk/atira/pure/subjectarea/asjc/1900/1901 name=Earth and Planetary Sciences (miscellaneous) /dk/atira/pure/subjectarea/asjc/1900/1912 name=Space and Planetary Science article 2021 ftunivbathcris https://doi.org/10.5194/angeo-39-1-2021 2024-04-09T02:45:17Z In this study we explore the seasonal variability of the mean winds and diurnal and semidiurnal tidal amplitude and phases, as well as the Reynolds stress components during 2019, utilizing meteor radars at six Southern Hemisphere locations ranging from midlatitudes to polar latitudes. These include Tierra del Fuego, King Edward Point on South Georgia island, King Sejong Station, Rothera, Davis, and Mc- Murdo stations. The year 2019 was exceptional in the Southern Hemisphere, due to the occurrence of a rare minor stratospheric warming in September. Our results show a substantial longitudinal and latitudinal seasonal variability of mean winds and tides, pointing towards a wobbling and asymmetric polar vortex. Furthermore, the derived momentum fluxes and wind variances, utilizing a recently developed algorithm, reveal a characteristic seasonal pattern at each location included in this study. The longitudinal and latitudinal variability of vertical flux of zonal and meridional momentum is discussed in the context of polar vortex asymmetry, spatial and temporal variability, and the longitude and latitude dependence of the vertical propagation conditions of gravity waves. The horizontal momentum fluxes exhibit a rather consistent seasonal structure between the stations, while the wind variances indicate a clear seasonal behavior and altitude dependence, showing the largest values at higher altitudes during the hemispheric winter and two variance minima during the equinoxes. Also the hemispheric summer mesopause and the zonal wind reversal can be identified in the wind variances. Article in Journal/Newspaper South Georgia Island Tierra del Fuego University of Bath's research portal Annales Geophysicae 39 1 1 29 |
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University of Bath's research portal |
op_collection_id |
ftunivbathcris |
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English |
topic |
/dk/atira/pure/subjectarea/asjc/3100/3103 name=Astronomy and Astrophysics /dk/atira/pure/subjectarea/asjc/1900/1907 name=Geology /dk/atira/pure/subjectarea/asjc/1900/1902 name=Atmospheric Science /dk/atira/pure/subjectarea/asjc/1900/1901 name=Earth and Planetary Sciences (miscellaneous) /dk/atira/pure/subjectarea/asjc/1900/1912 name=Space and Planetary Science |
spellingShingle |
/dk/atira/pure/subjectarea/asjc/3100/3103 name=Astronomy and Astrophysics /dk/atira/pure/subjectarea/asjc/1900/1907 name=Geology /dk/atira/pure/subjectarea/asjc/1900/1902 name=Atmospheric Science /dk/atira/pure/subjectarea/asjc/1900/1901 name=Earth and Planetary Sciences (miscellaneous) /dk/atira/pure/subjectarea/asjc/1900/1912 name=Space and Planetary Science Stober, Gunter Janches, DIego Matthias, Vivien Fritts, Dave Marino, John Moffat-Griffin, Tracy Baumgarten, Kathrin Lee, Wonseok Murphy, Damian Ha Kim, Yong Mitchell, Nicholas Palo, Scott Seasonal evolution of winds, atmospheric tides, and Reynolds stress components in the Southern Hemisphere mesosphere-lower thermosphere in 2019 |
topic_facet |
/dk/atira/pure/subjectarea/asjc/3100/3103 name=Astronomy and Astrophysics /dk/atira/pure/subjectarea/asjc/1900/1907 name=Geology /dk/atira/pure/subjectarea/asjc/1900/1902 name=Atmospheric Science /dk/atira/pure/subjectarea/asjc/1900/1901 name=Earth and Planetary Sciences (miscellaneous) /dk/atira/pure/subjectarea/asjc/1900/1912 name=Space and Planetary Science |
description |
In this study we explore the seasonal variability of the mean winds and diurnal and semidiurnal tidal amplitude and phases, as well as the Reynolds stress components during 2019, utilizing meteor radars at six Southern Hemisphere locations ranging from midlatitudes to polar latitudes. These include Tierra del Fuego, King Edward Point on South Georgia island, King Sejong Station, Rothera, Davis, and Mc- Murdo stations. The year 2019 was exceptional in the Southern Hemisphere, due to the occurrence of a rare minor stratospheric warming in September. Our results show a substantial longitudinal and latitudinal seasonal variability of mean winds and tides, pointing towards a wobbling and asymmetric polar vortex. Furthermore, the derived momentum fluxes and wind variances, utilizing a recently developed algorithm, reveal a characteristic seasonal pattern at each location included in this study. The longitudinal and latitudinal variability of vertical flux of zonal and meridional momentum is discussed in the context of polar vortex asymmetry, spatial and temporal variability, and the longitude and latitude dependence of the vertical propagation conditions of gravity waves. The horizontal momentum fluxes exhibit a rather consistent seasonal structure between the stations, while the wind variances indicate a clear seasonal behavior and altitude dependence, showing the largest values at higher altitudes during the hemispheric winter and two variance minima during the equinoxes. Also the hemispheric summer mesopause and the zonal wind reversal can be identified in the wind variances. |
format |
Article in Journal/Newspaper |
author |
Stober, Gunter Janches, DIego Matthias, Vivien Fritts, Dave Marino, John Moffat-Griffin, Tracy Baumgarten, Kathrin Lee, Wonseok Murphy, Damian Ha Kim, Yong Mitchell, Nicholas Palo, Scott |
author_facet |
Stober, Gunter Janches, DIego Matthias, Vivien Fritts, Dave Marino, John Moffat-Griffin, Tracy Baumgarten, Kathrin Lee, Wonseok Murphy, Damian Ha Kim, Yong Mitchell, Nicholas Palo, Scott |
author_sort |
Stober, Gunter |
title |
Seasonal evolution of winds, atmospheric tides, and Reynolds stress components in the Southern Hemisphere mesosphere-lower thermosphere in 2019 |
title_short |
Seasonal evolution of winds, atmospheric tides, and Reynolds stress components in the Southern Hemisphere mesosphere-lower thermosphere in 2019 |
title_full |
Seasonal evolution of winds, atmospheric tides, and Reynolds stress components in the Southern Hemisphere mesosphere-lower thermosphere in 2019 |
title_fullStr |
Seasonal evolution of winds, atmospheric tides, and Reynolds stress components in the Southern Hemisphere mesosphere-lower thermosphere in 2019 |
title_full_unstemmed |
Seasonal evolution of winds, atmospheric tides, and Reynolds stress components in the Southern Hemisphere mesosphere-lower thermosphere in 2019 |
title_sort |
seasonal evolution of winds, atmospheric tides, and reynolds stress components in the southern hemisphere mesosphere-lower thermosphere in 2019 |
publishDate |
2021 |
url |
https://researchportal.bath.ac.uk/en/publications/a05cfeae-62b8-470c-9363-fb7f6b4d7892 https://doi.org/10.5194/angeo-39-1-2021 http://www.scopus.com/inward/record.url?scp=85099032863&partnerID=8YFLogxK |
genre |
South Georgia Island Tierra del Fuego |
genre_facet |
South Georgia Island Tierra del Fuego |
op_source |
Stober , G , Janches , DI , Matthias , V , Fritts , D , Marino , J , Moffat-Griffin , T , Baumgarten , K , Lee , W , Murphy , D , Ha Kim , Y , Mitchell , N & Palo , S 2021 , ' Seasonal evolution of winds, atmospheric tides, and Reynolds stress components in the Southern Hemisphere mesosphere-lower thermosphere in 2019 ' , Annales Geophysicae , vol. 39 , no. 1 , pp. 1-29 . https://doi.org/10.5194/angeo-39-1-2021 |
op_relation |
https://researchportal.bath.ac.uk/en/publications/a05cfeae-62b8-470c-9363-fb7f6b4d7892 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-39-1-2021 |
container_title |
Annales Geophysicae |
container_volume |
39 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
29 |
_version_ |
1797569510588284928 |