Simultaneous observations of traveling convection vortices: Ionosphere-thermosphere coupling: M-I-T COUPLING OF TCV
We present simultaneous observations of magnetosphere-ionosphere-thermosphere coupling over Svalbard during a traveling convection vortex (TCV) event. Various spaceborne and ground-based instruments made coordinated measurements, including magnetometers, particle detectors, an all-sky camera, Europe...
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ftosti:oai:osti.gov:1438123 2023-07-30T04:03:16+02:00 Simultaneous observations of traveling convection vortices: Ionosphere-thermosphere coupling: M-I-T COUPLING OF TCV Kim, Hyomin Lessard, Marc R. Jones, Sarah L. Lynch, Kristina A. Fernandes, Philip A. Aruliah, Anasuya L. Engebretson, Mark J. Moen, Joran I. Oksavik, Kjellmar Yahnin, Alexander G. Yeoman, Timothy K. 2021-07-26 application/pdf http://www.osti.gov/servlets/purl/1438123 https://www.osti.gov/biblio/1438123 https://doi.org/10.1002/2017JA023904 unknown http://www.osti.gov/servlets/purl/1438123 https://www.osti.gov/biblio/1438123 https://doi.org/10.1002/2017JA023904 doi:10.1002/2017JA023904 79 ASTRONOMY AND ASTROPHYSICS 2021 ftosti https://doi.org/10.1002/2017JA023904 2023-07-11T09:25:55Z We present simultaneous observations of magnetosphere-ionosphere-thermosphere coupling over Svalbard during a traveling convection vortex (TCV) event. Various spaceborne and ground-based instruments made coordinated measurements, including magnetometers, particle detectors, an all-sky camera, European Incoherent Scatter (EISCAT) Svalbard Radar, Super Dual Auroral Radar Network (SuperDARN), and SCANning Doppler Imager (SCANDI). The instruments recorded TCVs associated with a sudden change in solar wind dynamic pressure. The data display typical features of TCVs including vortical ionospheric convection patterns seen by the ground magnetometers and SuperDARN radars and auroral precipitation near the cusp observed by the all-sky camera. Simultaneously, electron and ion temperature enhancements with corresponding density increase from soft precipitation are also observed by the EISCAT Svalbard Radar. The ground magnetometers also detected electromagnetic ion cyclotron waves at the approximate time of the TCV arrival. This implies that they were generated by a temperature anisotropy resulting from a compression on the dayside magnetosphere. SCANDI data show a divergence in thermospheric winds during the TCVs, presumably due to thermospheric heating associated with the current closure linked to a field-aligned current system generated by the TCVs. We conclude that solar wind pressure impulse-related transient phenomena can affect even the upper atmospheric dynamics via current systems established by a magnetosphere-ionosphere-thermosphere coupling process. Other/Unknown Material EISCAT Svalbard SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Svalbard Journal of Geophysical Research: Space Physics 122 5 4943 4959 |
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Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
79 ASTRONOMY AND ASTROPHYSICS |
spellingShingle |
79 ASTRONOMY AND ASTROPHYSICS Kim, Hyomin Lessard, Marc R. Jones, Sarah L. Lynch, Kristina A. Fernandes, Philip A. Aruliah, Anasuya L. Engebretson, Mark J. Moen, Joran I. Oksavik, Kjellmar Yahnin, Alexander G. Yeoman, Timothy K. Simultaneous observations of traveling convection vortices: Ionosphere-thermosphere coupling: M-I-T COUPLING OF TCV |
topic_facet |
79 ASTRONOMY AND ASTROPHYSICS |
description |
We present simultaneous observations of magnetosphere-ionosphere-thermosphere coupling over Svalbard during a traveling convection vortex (TCV) event. Various spaceborne and ground-based instruments made coordinated measurements, including magnetometers, particle detectors, an all-sky camera, European Incoherent Scatter (EISCAT) Svalbard Radar, Super Dual Auroral Radar Network (SuperDARN), and SCANning Doppler Imager (SCANDI). The instruments recorded TCVs associated with a sudden change in solar wind dynamic pressure. The data display typical features of TCVs including vortical ionospheric convection patterns seen by the ground magnetometers and SuperDARN radars and auroral precipitation near the cusp observed by the all-sky camera. Simultaneously, electron and ion temperature enhancements with corresponding density increase from soft precipitation are also observed by the EISCAT Svalbard Radar. The ground magnetometers also detected electromagnetic ion cyclotron waves at the approximate time of the TCV arrival. This implies that they were generated by a temperature anisotropy resulting from a compression on the dayside magnetosphere. SCANDI data show a divergence in thermospheric winds during the TCVs, presumably due to thermospheric heating associated with the current closure linked to a field-aligned current system generated by the TCVs. We conclude that solar wind pressure impulse-related transient phenomena can affect even the upper atmospheric dynamics via current systems established by a magnetosphere-ionosphere-thermosphere coupling process. |
author |
Kim, Hyomin Lessard, Marc R. Jones, Sarah L. Lynch, Kristina A. Fernandes, Philip A. Aruliah, Anasuya L. Engebretson, Mark J. Moen, Joran I. Oksavik, Kjellmar Yahnin, Alexander G. Yeoman, Timothy K. |
author_facet |
Kim, Hyomin Lessard, Marc R. Jones, Sarah L. Lynch, Kristina A. Fernandes, Philip A. Aruliah, Anasuya L. Engebretson, Mark J. Moen, Joran I. Oksavik, Kjellmar Yahnin, Alexander G. Yeoman, Timothy K. |
author_sort |
Kim, Hyomin |
title |
Simultaneous observations of traveling convection vortices: Ionosphere-thermosphere coupling: M-I-T COUPLING OF TCV |
title_short |
Simultaneous observations of traveling convection vortices: Ionosphere-thermosphere coupling: M-I-T COUPLING OF TCV |
title_full |
Simultaneous observations of traveling convection vortices: Ionosphere-thermosphere coupling: M-I-T COUPLING OF TCV |
title_fullStr |
Simultaneous observations of traveling convection vortices: Ionosphere-thermosphere coupling: M-I-T COUPLING OF TCV |
title_full_unstemmed |
Simultaneous observations of traveling convection vortices: Ionosphere-thermosphere coupling: M-I-T COUPLING OF TCV |
title_sort |
simultaneous observations of traveling convection vortices: ionosphere-thermosphere coupling: m-i-t coupling of tcv |
publishDate |
2021 |
url |
http://www.osti.gov/servlets/purl/1438123 https://www.osti.gov/biblio/1438123 https://doi.org/10.1002/2017JA023904 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT Svalbard |
op_relation |
http://www.osti.gov/servlets/purl/1438123 https://www.osti.gov/biblio/1438123 https://doi.org/10.1002/2017JA023904 doi:10.1002/2017JA023904 |
op_doi |
https://doi.org/10.1002/2017JA023904 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
122 |
container_issue |
5 |
container_start_page |
4943 |
op_container_end_page |
4959 |
_version_ |
1772814233927417856 |