2023 Fiscal Year Final Research Report
Determining wind speeds from atmospheric gravity wave structures using airglow imaging observations
| Project/Area Number |
18K03728
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Review Section |
Basic Section 17010:Space and planetary sciences-related
|
|---|
| Research Institution | Aichi University |
|---|
Principal Investigator |
Suzuki Shin 愛知大学, 地域政策学部, 教授 (60397479)
|
|---|
| Project Period (FY) |
2018-04-01 – 2024-03-31
|
| Keywords | 大気光 / 大気重力波 / 風速 / 画像処理 |
|---|
| Outline of Final Research Achievements |
In this study, we established a method to determine wind speeds in the airglow emission layer in the mesopause region by identifying the vertical structure of atmospheric gravity waves from airglow imaging observations at different altitudes. From the structure of small-scale atmospheric gravity waves (horizontal wavelengths of several tens of kilometers), an eastward wind speed of approximately 55 m/s was estimated. Concurrent wind speed observations indicated winds of 30-40 m/s (east-northeast). Although there is room for improvement in estimation accuracy, the validity of the developed system was confirmed.
|
| Free Research Field |
超高層物理学
|
| Academic Significance and Societal Importance of the Research Achievements |
本研究による風速導出の手法は，世界各地で実施されている大気光観測においても応用可能であるため，需要の高い超高層大気風速の汎地球的マップ作成にも貢献できる．
|
