Polar thermospheric winds and temperature observed by Fabry-Perot interferometer at Jang Bogo Station, Antarctica
Upper atmospheric neutral winds and temperature have been observed by the Fabry-Perot interferometer (FPI) which was installed at Jang Bogo Station (JBS), Antarctica, in 2014. Since JBS is mostly located within the polar cap region, the observed thermospheric winds at 250 km show strong diurnal vari...
Published in: | Journal of Geophysical Research: Space Physics |
---|---|
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | https://doi.org/10.1002/2017JA024408 |
id |
ftncar:oai:drupal-site.org:articles_21137 |
---|---|
record_format |
openpolar |
spelling |
ftncar:oai:drupal-site.org:articles_21137 2023-09-05T13:13:21+02:00 Polar thermospheric winds and temperature observed by Fabry-Perot interferometer at Jang Bogo Station, Antarctica Lee, Changsup (author) Jee, Geonhwa (author) Wu, Qian (author) Shim, Ja Soon (author) Murphy, Damian (author) Song, In-Sun (author) Kwon, Hyuck-Jin (author) Kim, Jeong-Han (author) Kim, Yong Ha (author) 2017-09-27 https://doi.org/10.1002/2017JA024408 en eng Journal of Geophysical Research: Space Physics--J. Geophys. Res. Space Physics--21699380 articles:21137 ark:/85065/d7377c88 doi:10.1002/2017JA024408 Copyright 2017 American Geophysical Union. article Text 2017 ftncar https://doi.org/10.1002/2017JA024408 2023-08-14T18:48:26Z Upper atmospheric neutral winds and temperature have been observed by the Fabry-Perot interferometer (FPI) which was installed at Jang Bogo Station (JBS), Antarctica, in 2014. Since JBS is mostly located within the polar cap region, the observed thermospheric winds at 250 km show strong diurnal variations with notable antisunward motions due to the effects of plasma convection. The winds at 87 km, on the other hand, show semidiurnal variations due to the lower atmospheric tidal effects. We found that the winds from green line emission show largely diurnal variations, unlike the other independent observations, which might be due to the auroral contamination. The horizontal wind model 2014 winds at 250 km show reasonable agreement with FPI winds, while large discrepancies exist at 87 km in terms of seasonal variations. There is a distinctive asymmetric seasonal variation of the thermospheric zonal wind in the dusk and dawn sectors. FPI temperatures at 250 km show a fairly close correlation with Kp index, especially in 2015 when the geomagnetic activity is stronger. However, the temperatures at 87 km are mostly independent on Kp index. Finally, during the intense geomagnetic storm, thermospheric winds and temperature are significantly disturbed and Thermosphere Ionosphere Electrodynamics General Circulation Model simulations are in surprisingly good agreement with observation for winds but the temperatures are significantly underestimated during the whole storm period. Article in Journal/Newspaper Antarc* Antarctica OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Bogo ENVELOPE(9.783,9.783,63.095,63.095) Journal of Geophysical Research: Space Physics 122 9 9685 9695 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Upper atmospheric neutral winds and temperature have been observed by the Fabry-Perot interferometer (FPI) which was installed at Jang Bogo Station (JBS), Antarctica, in 2014. Since JBS is mostly located within the polar cap region, the observed thermospheric winds at 250 km show strong diurnal variations with notable antisunward motions due to the effects of plasma convection. The winds at 87 km, on the other hand, show semidiurnal variations due to the lower atmospheric tidal effects. We found that the winds from green line emission show largely diurnal variations, unlike the other independent observations, which might be due to the auroral contamination. The horizontal wind model 2014 winds at 250 km show reasonable agreement with FPI winds, while large discrepancies exist at 87 km in terms of seasonal variations. There is a distinctive asymmetric seasonal variation of the thermospheric zonal wind in the dusk and dawn sectors. FPI temperatures at 250 km show a fairly close correlation with Kp index, especially in 2015 when the geomagnetic activity is stronger. However, the temperatures at 87 km are mostly independent on Kp index. Finally, during the intense geomagnetic storm, thermospheric winds and temperature are significantly disturbed and Thermosphere Ionosphere Electrodynamics General Circulation Model simulations are in surprisingly good agreement with observation for winds but the temperatures are significantly underestimated during the whole storm period. |
author2 |
Lee, Changsup (author) Jee, Geonhwa (author) Wu, Qian (author) Shim, Ja Soon (author) Murphy, Damian (author) Song, In-Sun (author) Kwon, Hyuck-Jin (author) Kim, Jeong-Han (author) Kim, Yong Ha (author) |
format |
Article in Journal/Newspaper |
title |
Polar thermospheric winds and temperature observed by Fabry-Perot interferometer at Jang Bogo Station, Antarctica |
spellingShingle |
Polar thermospheric winds and temperature observed by Fabry-Perot interferometer at Jang Bogo Station, Antarctica |
title_short |
Polar thermospheric winds and temperature observed by Fabry-Perot interferometer at Jang Bogo Station, Antarctica |
title_full |
Polar thermospheric winds and temperature observed by Fabry-Perot interferometer at Jang Bogo Station, Antarctica |
title_fullStr |
Polar thermospheric winds and temperature observed by Fabry-Perot interferometer at Jang Bogo Station, Antarctica |
title_full_unstemmed |
Polar thermospheric winds and temperature observed by Fabry-Perot interferometer at Jang Bogo Station, Antarctica |
title_sort |
polar thermospheric winds and temperature observed by fabry-perot interferometer at jang bogo station, antarctica |
publishDate |
2017 |
url |
https://doi.org/10.1002/2017JA024408 |
long_lat |
ENVELOPE(9.783,9.783,63.095,63.095) |
geographic |
Bogo |
geographic_facet |
Bogo |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Journal of Geophysical Research: Space Physics--J. Geophys. Res. Space Physics--21699380 articles:21137 ark:/85065/d7377c88 doi:10.1002/2017JA024408 |
op_rights |
Copyright 2017 American Geophysical Union. |
op_doi |
https://doi.org/10.1002/2017JA024408 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
122 |
container_issue |
9 |
container_start_page |
9685 |
op_container_end_page |
9695 |
_version_ |
1776204658928254976 |