Dynamic Properties of a Sporadic Sodium Layer Revealed by Observations Over Zhongshan, Antarctica: A Case Study
A sodium Doppler lidar system with three-directional measurements of sodium density, atmospheric wind field, and temperature was established at Zhongshan (69.4°S, 76.4°E), Antarctica. On November 14, 2019, a sporadic sodium layer (SSL) was observed at an altitude range of 93–103 km. The temporal/spa...
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Online Access: | http://hdl.handle.net/10566/7898 https://doi.org/10.1029/2021JA029787 |
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ftunivwesterncrr:oai:repository.uwc.ac.za:10566/7898 2023-05-15T13:36:53+02:00 Dynamic Properties of a Sporadic Sodium Layer Revealed by Observations Over Zhongshan, Antarctica: A Case Study Kosch, Michael J 2021 application/pdf http://hdl.handle.net/10566/7898 https://doi.org/10.1029/2021JA029787 en eng Journal of Geophysical Research: Space Physics Chen, X., Huang, W., Ban, C., Kosch, M. J., Murphy, D. J., Hu, Z., et al. (2021). Dynamic properties of a sporadic sodium layer revealed by observations over Zhongshan, Antarctica: A case study. Journal of Geophysical Research: Space Physics, 126, e2021JA029787 doi:10.1029/2021JA029787 http://hdl.handle.net/10566/7898 sodium Doppler lidar system Zhongshan Antarctica dynamic Properties Article 2021 ftunivwesterncrr https://doi.org/10.1029/2021JA029787 2022-09-20T00:19:31Z A sodium Doppler lidar system with three-directional measurements of sodium density, atmospheric wind field, and temperature was established at Zhongshan (69.4°S, 76.4°E), Antarctica. On November 14, 2019, a sporadic sodium layer (SSL) was observed at an altitude range of 93–103 km. The temporal/spatial sodium density variations of this SSL are associated with a strong sporadic E (Es) layer at nearly the same height, which is modulated by the convective electric field. By considering the structures and the time lags of the SSL's growth at three positions, the SSL appears to have a horizontal advection in an approximately westward direction with a velocity of the order of 80 m/s. This is consistent with the zonal wind velocity derived from the lidar system itself. The temporal/spatial sodium density variations strongly indicate that the formation and perturbation of SSLs are related to the evolution of ES layers due to varied electric fields and atmospheric gravity waves, while it is advected by the horizontal wind. © 2021. American Geophysical Union. All Rights Reserved. Article in Journal/Newspaper Antarc* Antarctica E. Antarctica University of the Western Cap: UWC Research Repository Zhongshan ENVELOPE(76.371,76.371,-69.373,-69.373) Journal of Geophysical Research: Space Physics 126 11 |
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Open Polar |
collection |
University of the Western Cap: UWC Research Repository |
op_collection_id |
ftunivwesterncrr |
language |
English |
topic |
sodium Doppler lidar system Zhongshan Antarctica dynamic Properties |
spellingShingle |
sodium Doppler lidar system Zhongshan Antarctica dynamic Properties Kosch, Michael J Dynamic Properties of a Sporadic Sodium Layer Revealed by Observations Over Zhongshan, Antarctica: A Case Study |
topic_facet |
sodium Doppler lidar system Zhongshan Antarctica dynamic Properties |
description |
A sodium Doppler lidar system with three-directional measurements of sodium density, atmospheric wind field, and temperature was established at Zhongshan (69.4°S, 76.4°E), Antarctica. On November 14, 2019, a sporadic sodium layer (SSL) was observed at an altitude range of 93–103 km. The temporal/spatial sodium density variations of this SSL are associated with a strong sporadic E (Es) layer at nearly the same height, which is modulated by the convective electric field. By considering the structures and the time lags of the SSL's growth at three positions, the SSL appears to have a horizontal advection in an approximately westward direction with a velocity of the order of 80 m/s. This is consistent with the zonal wind velocity derived from the lidar system itself. The temporal/spatial sodium density variations strongly indicate that the formation and perturbation of SSLs are related to the evolution of ES layers due to varied electric fields and atmospheric gravity waves, while it is advected by the horizontal wind. © 2021. American Geophysical Union. All Rights Reserved. |
format |
Article in Journal/Newspaper |
author |
Kosch, Michael J |
author_facet |
Kosch, Michael J |
author_sort |
Kosch, Michael J |
title |
Dynamic Properties of a Sporadic Sodium Layer Revealed by Observations Over Zhongshan, Antarctica: A Case Study |
title_short |
Dynamic Properties of a Sporadic Sodium Layer Revealed by Observations Over Zhongshan, Antarctica: A Case Study |
title_full |
Dynamic Properties of a Sporadic Sodium Layer Revealed by Observations Over Zhongshan, Antarctica: A Case Study |
title_fullStr |
Dynamic Properties of a Sporadic Sodium Layer Revealed by Observations Over Zhongshan, Antarctica: A Case Study |
title_full_unstemmed |
Dynamic Properties of a Sporadic Sodium Layer Revealed by Observations Over Zhongshan, Antarctica: A Case Study |
title_sort |
dynamic properties of a sporadic sodium layer revealed by observations over zhongshan, antarctica: a case study |
publisher |
Journal of Geophysical Research: Space Physics |
publishDate |
2021 |
url |
http://hdl.handle.net/10566/7898 https://doi.org/10.1029/2021JA029787 |
long_lat |
ENVELOPE(76.371,76.371,-69.373,-69.373) |
geographic |
Zhongshan |
geographic_facet |
Zhongshan |
genre |
Antarc* Antarctica E. Antarctica |
genre_facet |
Antarc* Antarctica E. Antarctica |
op_relation |
Chen, X., Huang, W., Ban, C., Kosch, M. J., Murphy, D. J., Hu, Z., et al. (2021). Dynamic properties of a sporadic sodium layer revealed by observations over Zhongshan, Antarctica: A case study. Journal of Geophysical Research: Space Physics, 126, e2021JA029787 doi:10.1029/2021JA029787 http://hdl.handle.net/10566/7898 |
op_doi |
https://doi.org/10.1029/2021JA029787 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
126 |
container_issue |
11 |
_version_ |
1766085222915375104 |