An extended TRANSCAR model including ionospheric convection: simulation of EISCAT observations using inputs from AMIE
The TRANSCAR ionospheric model was extended to account for the convection of the magnetic field lines in the auroral and polar ionosphere. A mixed Eulerian-Lagrangian 13-moment approach was used to describe the dynamics of an ionospheric plasma tube. In the present study, one focuses on large scale...
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2005
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00034345 2023-05-15T16:04:36+02:00 An extended TRANSCAR model including ionospheric convection: simulation of EISCAT observations using inputs from AMIE Blelly, P.-L. Lathuillère, C. Emery, B. Lilensten, J. Fontanari, J. Alcaydé, D. 2005-02 electronic https://doi.org/10.5194/angeo-23-419-2005 https://noa.gwlb.de/receive/cop_mods_00034345 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034299/angeo-23-419-2005.pdf https://angeo.copernicus.org/articles/23/419/2005/angeo-23-419-2005.pdf eng eng Copernicus Publications Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-23-419-2005 https://noa.gwlb.de/receive/cop_mods_00034345 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034299/angeo-23-419-2005.pdf https://angeo.copernicus.org/articles/23/419/2005/angeo-23-419-2005.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2005 ftnonlinearchiv https://doi.org/10.5194/angeo-23-419-2005 2022-02-08T22:45:16Z The TRANSCAR ionospheric model was extended to account for the convection of the magnetic field lines in the auroral and polar ionosphere. A mixed Eulerian-Lagrangian 13-moment approach was used to describe the dynamics of an ionospheric plasma tube. In the present study, one focuses on large scale transports in the polar ionosphere. The model was used to simulate a 35-h period of EISCAT-UHF observations on 16-17 February 1993. The first day was magnetically quiet, and characterized by elevated electron concentrations: the diurnal F2 layer reached as much as 1012m-3, which is unusual for a winter and moderate solar activity (F10.7=130) period. An intense geomagnetic event occurred on the second day, seen in the data as a strong intensification of the ionosphere convection velocities in the early afternoon (with the northward electric field reaching 150mVm-1) and corresponding frictional heating of the ions up to 2500K. The simulation used time-dependent AMIE outputs to infer flux-tube transports in the polar region, and to provide magnetospheric particle and energy inputs to the ionosphere. The overall very good agreement, obtained between the model and the observations, demonstrates the high ability of the extended TRANSCAR model for quantitative modelling of the high-latitude ionosphere; however, some differences are found which are attributed to the precipitation of electrons with very low energy. All these results are finally discussed in the frame of modelling the auroral ionosphere with space weather applications in mind. Article in Journal/Newspaper EISCAT Niedersächsisches Online-Archiv NOA Annales Geophysicae 23 2 419 431 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Blelly, P.-L. Lathuillère, C. Emery, B. Lilensten, J. Fontanari, J. Alcaydé, D. An extended TRANSCAR model including ionospheric convection: simulation of EISCAT observations using inputs from AMIE |
topic_facet |
article Verlagsveröffentlichung |
description |
The TRANSCAR ionospheric model was extended to account for the convection of the magnetic field lines in the auroral and polar ionosphere. A mixed Eulerian-Lagrangian 13-moment approach was used to describe the dynamics of an ionospheric plasma tube. In the present study, one focuses on large scale transports in the polar ionosphere. The model was used to simulate a 35-h period of EISCAT-UHF observations on 16-17 February 1993. The first day was magnetically quiet, and characterized by elevated electron concentrations: the diurnal F2 layer reached as much as 1012m-3, which is unusual for a winter and moderate solar activity (F10.7=130) period. An intense geomagnetic event occurred on the second day, seen in the data as a strong intensification of the ionosphere convection velocities in the early afternoon (with the northward electric field reaching 150mVm-1) and corresponding frictional heating of the ions up to 2500K. The simulation used time-dependent AMIE outputs to infer flux-tube transports in the polar region, and to provide magnetospheric particle and energy inputs to the ionosphere. The overall very good agreement, obtained between the model and the observations, demonstrates the high ability of the extended TRANSCAR model for quantitative modelling of the high-latitude ionosphere; however, some differences are found which are attributed to the precipitation of electrons with very low energy. All these results are finally discussed in the frame of modelling the auroral ionosphere with space weather applications in mind. |
format |
Article in Journal/Newspaper |
author |
Blelly, P.-L. Lathuillère, C. Emery, B. Lilensten, J. Fontanari, J. Alcaydé, D. |
author_facet |
Blelly, P.-L. Lathuillère, C. Emery, B. Lilensten, J. Fontanari, J. Alcaydé, D. |
author_sort |
Blelly, P.-L. |
title |
An extended TRANSCAR model including ionospheric convection: simulation of EISCAT observations using inputs from AMIE |
title_short |
An extended TRANSCAR model including ionospheric convection: simulation of EISCAT observations using inputs from AMIE |
title_full |
An extended TRANSCAR model including ionospheric convection: simulation of EISCAT observations using inputs from AMIE |
title_fullStr |
An extended TRANSCAR model including ionospheric convection: simulation of EISCAT observations using inputs from AMIE |
title_full_unstemmed |
An extended TRANSCAR model including ionospheric convection: simulation of EISCAT observations using inputs from AMIE |
title_sort |
extended transcar model including ionospheric convection: simulation of eiscat observations using inputs from amie |
publisher |
Copernicus Publications |
publishDate |
2005 |
url |
https://doi.org/10.5194/angeo-23-419-2005 https://noa.gwlb.de/receive/cop_mods_00034345 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034299/angeo-23-419-2005.pdf https://angeo.copernicus.org/articles/23/419/2005/angeo-23-419-2005.pdf |
genre |
EISCAT |
genre_facet |
EISCAT |
op_relation |
Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-23-419-2005 https://noa.gwlb.de/receive/cop_mods_00034345 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034299/angeo-23-419-2005.pdf https://angeo.copernicus.org/articles/23/419/2005/angeo-23-419-2005.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-23-419-2005 |
container_title |
Annales Geophysicae |
container_volume |
23 |
container_issue |
2 |
container_start_page |
419 |
op_container_end_page |
431 |
_version_ |
1766400198311936000 |