Studies of atmosphere and ionosphere coupling using a general circulation model and global geomagnetic observation data
| Project/Area Number |
23540513
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Meteorology/Physical oceanography/Hydrology
|
|---|
| Research Institution | Kyushu University |
|---|
Principal Investigator |
MIYAHARA Saburo 九州大学, 理学(系)研究科(研究院), 名誉教授 (70037282)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
YUMOTO Kiyofumi 九州大学, 国際宇宙天気科学・教育センター, 教授 (20125686)
HIROOKA Toshihiko 九州大学, 理学(系)研究科(研究院), 教授 (90253393)
KAWANO Hideaki 九州大学, 国際宇宙天気科学・教育センター, 准教授 (60304721)
LIU Xuixin 九州大学, 国際宇宙天気科学・教育センター, 准教授 (70589639)
WATANABE Masakazu 九州大学, 国際宇宙天気科学・教育センター, 准教授 (70446607)
YOSHIKAWA Akimasa 九州大学, 国際宇宙天気科学・教育センター, 講師 (70284479)
|
|---|
| Project Period (FY) |
2011 – 2013
|
| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
|---|
| Keywords | 中性大気変動 / 電離圏電流変動 / 赤道エレクトロジェット / Sq / 大気潮汐波 / 成層圏突然昇温 / Sq電流 / 赤道ケルビン波 / 高速ケルビン波 |
|---|
| Research Abstract |
Relations between neutral atmosphere and ionosphere variations are investigated using Kyushu-GCM and global geomagnetic observation system developed by Kyushu University.
It is found that ionospheric current system varies after Stratospheric Sudden Warming(SSW) due to the neutral atmospheric variations mainly caused by variations of semidiurnal tide after the SSW. It is also found that the neutral atmosphere temperature in the lower ionosphere suddenly falls down after the SSW. This phenomena is also caused by the variations of semidiurnal tide after the SSW. Effects of ultra fast Kelvin wave(UFK) variations on the ionospheric currents system is confined in the equatorial to low latitude regions, but the variations by UFK is less than 25% of the variations caused by other neutral atmospheric variations such as tidal variations.
|
Report
(4 results)
Research Products
(59 results)
-
-
-
-
[Journal Article] The response of the dayside equatorial electrojet to step-like changes of IMF Bz.2013
Author(s)
Ohtani, S., Uozumi, T., Kawano, H., Yoshikawa, A., Utada, H., Nagatsuma, T., Yumoto, K.
-
Journal Title
J. Geophys. Res. (Space physics)
Volume: 194
Issue: 6
Pages: 3637-3646
DOI
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
[Journal Article] Dependence of the amplitude of Pc5-band magnetic field variations on the solar wind and solar activity2012
Author(s)
Takahashi, K, Yumoto, K, Claudepierre, SG, Sanchez, ER, Troshichev, OA, Janzhura, AS
-
Journal Title
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
Volume: 117, A04207
Issue: A4
DOI
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Latitude profiles of the FLR frequency and the resonance width estimated by using the improved hodograph method and the APGM method2013
Author(s)
Hideaki Kawano, Viacheslav Pilipenko, Ian Robert Mann, David K Milling, Satoko Saita, Kentarou Kitamura, Kiyohumi Yumoto, and Akimasa Yoshikawa
Organizer
2013 AGU Fall Meeting
Place of Presentation
Moscone Convention Center, San Francisco, California, USA
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
