An interpretation of ion composition diurnal variation deduced from EISCAT observations
International audience Physical interpretation is made of the O + /Ne diurnal variations in summer, revealed by Litvine et al. (1998) from the EISCAT observations. It is shown that the observed anti-correlation between the Z 50 parameter, corresponding to the transition region between 50% of molecul...
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ftinsu:oai:HAL:hal-00329160v1 2024-04-28T08:17:32+00:00 An interpretation of ion composition diurnal variation deduced from EISCAT observations Mikhailov, A. V. Kofman, W. Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation 142090 Laboratoire de Planétologie de Grenoble (LPG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2001 https://hal.science/hal-00329160 https://hal.science/hal-00329160/document https://hal.science/hal-00329160/file/angeo-19-351-2001.pdf en eng HAL CCSD European Geosciences Union hal-00329160 https://hal.science/hal-00329160 https://hal.science/hal-00329160/document https://hal.science/hal-00329160/file/angeo-19-351-2001.pdf info:eu-repo/semantics/OpenAccess ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00329160 Annales Geophysicae, 2001, 19 (3), pp.351-358 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2001 ftinsu 2024-04-05T00:36:33Z International audience Physical interpretation is made of the O + /Ne diurnal variations in summer, revealed by Litvine et al. (1998) from the EISCAT observations. It is shown that the observed anti-correlation between the Z 50 parameter, corresponding to the transition region between 50% of molecular and atomic ions, and the width D z of the transition, defined as the altitude width between 10% and 90% of the O + /Ne ratio, can be reproduced in model calculations and the result of different recombination laws (quadratic in the lower and linear in the upper ionosphere) as well as diurnal variations in the photo-ionization rates. Article in Journal/Newspaper EISCAT Institut national des sciences de l'Univers: HAL-INSU |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Mikhailov, A. V. Kofman, W. An interpretation of ion composition diurnal variation deduced from EISCAT observations |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Physical interpretation is made of the O + /Ne diurnal variations in summer, revealed by Litvine et al. (1998) from the EISCAT observations. It is shown that the observed anti-correlation between the Z 50 parameter, corresponding to the transition region between 50% of molecular and atomic ions, and the width D z of the transition, defined as the altitude width between 10% and 90% of the O + /Ne ratio, can be reproduced in model calculations and the result of different recombination laws (quadratic in the lower and linear in the upper ionosphere) as well as diurnal variations in the photo-ionization rates. |
author2 |
Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation 142090 Laboratoire de Planétologie de Grenoble (LPG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Mikhailov, A. V. Kofman, W. |
author_facet |
Mikhailov, A. V. Kofman, W. |
author_sort |
Mikhailov, A. V. |
title |
An interpretation of ion composition diurnal variation deduced from EISCAT observations |
title_short |
An interpretation of ion composition diurnal variation deduced from EISCAT observations |
title_full |
An interpretation of ion composition diurnal variation deduced from EISCAT observations |
title_fullStr |
An interpretation of ion composition diurnal variation deduced from EISCAT observations |
title_full_unstemmed |
An interpretation of ion composition diurnal variation deduced from EISCAT observations |
title_sort |
interpretation of ion composition diurnal variation deduced from eiscat observations |
publisher |
HAL CCSD |
publishDate |
2001 |
url |
https://hal.science/hal-00329160 https://hal.science/hal-00329160/document https://hal.science/hal-00329160/file/angeo-19-351-2001.pdf |
genre |
EISCAT |
genre_facet |
EISCAT |
op_source |
ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00329160 Annales Geophysicae, 2001, 19 (3), pp.351-358 |
op_relation |
hal-00329160 https://hal.science/hal-00329160 https://hal.science/hal-00329160/document https://hal.science/hal-00329160/file/angeo-19-351-2001.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1797582065084923904 |