Auroral Ionosphere Model with PC Index as an Input
Auroral Ionosphere Model (AIM-E) is designed to calculate chemical content in the high-latitude E region ionosphere and takes into account both the solar EUV radiation and the electron precipitation of magnetospheric origin. The latter is extremely important for auroral ionosphere chemistry especial...
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ftmdpi:oai:mdpi.com:/2073-4433/13/3/402/ 2023-08-20T04:04:45+02:00 Auroral Ionosphere Model with PC Index as an Input Vera Nikolaeva Evgeny Gordeev Alexander Nikolaev Denis Rogov Oleg Troshichev agris 2022-02-28 application/pdf https://doi.org/10.3390/atmos13030402 EN eng Multidisciplinary Digital Publishing Institute Upper Atmosphere https://dx.doi.org/10.3390/atmos13030402 https://creativecommons.org/licenses/by/4.0/ Atmosphere; Volume 13; Issue 3; Pages: 402 auroral oval numerical modeling substorm PC index electron precipitation E region of ionosphere electron concentration Text 2022 ftmdpi https://doi.org/10.3390/atmos13030402 2023-08-01T04:19:35Z Auroral Ionosphere Model (AIM-E) is designed to calculate chemical content in the high-latitude E region ionosphere and takes into account both the solar EUV radiation and the electron precipitation of magnetospheric origin. The latter is extremely important for auroral ionosphere chemistry especially in disturbed conditions. In order to maximize the AIM-E timing accuracy when simulating highly variable periods in the course of geomagnetic storms and substorms, we suggest to parameterize the OVATION-Prime empirical precipitation model with the ground-based Polar Cap (PC) index. This gives an advantage to: (1) perform ionospheric simulation with actual input, since PC index reflects the geoeffective solar wind conditions; (2) promptly assess the current geomagnetic situation, since PC index is available in real-time with 1 min resolution. The simulation results of AIM-E with OVATION-Prime (PC) demonstrate a good agreement with the ground-based incoherent scatter radar data (EISCAT UHF, Tromso) and with the vertical sounding data in the Arctic zone during events of intense particle precipitation. The model reproduces well the electron content calculated in vertical column (90–140 km) and critical frequency of sporadic E layer (fOEs) formed by precipitating electrons. The AIM-E (PC) model can be applied to monitor the sporadic E layer in real-time and in the entire high-latitude ionosphere, including the auroral and subauroral zones, which is important for predicting the conditions of radio wave propagation. Text Arctic EISCAT Tromso Tromso MDPI Open Access Publishing Arctic Tromso ENVELOPE(16.546,16.546,68.801,68.801) Atmosphere 13 3 402 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
auroral oval numerical modeling substorm PC index electron precipitation E region of ionosphere electron concentration |
spellingShingle |
auroral oval numerical modeling substorm PC index electron precipitation E region of ionosphere electron concentration Vera Nikolaeva Evgeny Gordeev Alexander Nikolaev Denis Rogov Oleg Troshichev Auroral Ionosphere Model with PC Index as an Input |
topic_facet |
auroral oval numerical modeling substorm PC index electron precipitation E region of ionosphere electron concentration |
description |
Auroral Ionosphere Model (AIM-E) is designed to calculate chemical content in the high-latitude E region ionosphere and takes into account both the solar EUV radiation and the electron precipitation of magnetospheric origin. The latter is extremely important for auroral ionosphere chemistry especially in disturbed conditions. In order to maximize the AIM-E timing accuracy when simulating highly variable periods in the course of geomagnetic storms and substorms, we suggest to parameterize the OVATION-Prime empirical precipitation model with the ground-based Polar Cap (PC) index. This gives an advantage to: (1) perform ionospheric simulation with actual input, since PC index reflects the geoeffective solar wind conditions; (2) promptly assess the current geomagnetic situation, since PC index is available in real-time with 1 min resolution. The simulation results of AIM-E with OVATION-Prime (PC) demonstrate a good agreement with the ground-based incoherent scatter radar data (EISCAT UHF, Tromso) and with the vertical sounding data in the Arctic zone during events of intense particle precipitation. The model reproduces well the electron content calculated in vertical column (90–140 km) and critical frequency of sporadic E layer (fOEs) formed by precipitating electrons. The AIM-E (PC) model can be applied to monitor the sporadic E layer in real-time and in the entire high-latitude ionosphere, including the auroral and subauroral zones, which is important for predicting the conditions of radio wave propagation. |
format |
Text |
author |
Vera Nikolaeva Evgeny Gordeev Alexander Nikolaev Denis Rogov Oleg Troshichev |
author_facet |
Vera Nikolaeva Evgeny Gordeev Alexander Nikolaev Denis Rogov Oleg Troshichev |
author_sort |
Vera Nikolaeva |
title |
Auroral Ionosphere Model with PC Index as an Input |
title_short |
Auroral Ionosphere Model with PC Index as an Input |
title_full |
Auroral Ionosphere Model with PC Index as an Input |
title_fullStr |
Auroral Ionosphere Model with PC Index as an Input |
title_full_unstemmed |
Auroral Ionosphere Model with PC Index as an Input |
title_sort |
auroral ionosphere model with pc index as an input |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/atmos13030402 |
op_coverage |
agris |
long_lat |
ENVELOPE(16.546,16.546,68.801,68.801) |
geographic |
Arctic Tromso |
geographic_facet |
Arctic Tromso |
genre |
Arctic EISCAT Tromso Tromso |
genre_facet |
Arctic EISCAT Tromso Tromso |
op_source |
Atmosphere; Volume 13; Issue 3; Pages: 402 |
op_relation |
Upper Atmosphere https://dx.doi.org/10.3390/atmos13030402 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/atmos13030402 |
container_title |
Atmosphere |
container_volume |
13 |
container_issue |
3 |
container_start_page |
402 |
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1774715139979739136 |