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| Near-space Neutral Wind Field from All-sky FPI Measurements |
| Received:May 23, 2018 Revised:July 25, 2018 |
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| DOI：10.7643/ issn.1672-9242.2018.07.020 |
| KeyWord:near space all-sky FPI neutral wind field |
| Author | Institution |
| WU Peng-ju |
School of Electronic Information, Wuhan University, Wuhan , China |
| ZHANG Yan-ge |
School of Electronic Information, Wuhan University, Wuhan , China |
| AI Yong |
School of Electronic Information, Wuhan University, Wuhan , China |
| QIN Ming-hui |
School of Electronic Information, Wuhan University, Wuhan , China |
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| Abstract: |
| Objective To monitor and analyze near-space neutral atmospheric wind field. Methods Fabry-Perot Interferometer (FPI) was used to observe the atmospheric neutral wind field of near space. For neutral wind field at the top of near space over the Yellow River station (78.92°N, 11.93°E), the basic principle of FPI has been introduced. OI557.7 nm airglow interferograms on November 25, 2016 were analyzed through the observation of all-sky FPI equipment. Horizontal wind field and visual wind field within 5 rings during auroral substorm were obtained through inversion. Result The wind speed of near space was kept between -200 m/s. and 200 m/s. Auroral substorms made neutral wind have certain direction. The wind field increased in the direction perpendicular to the aurora of arc. Conclusion All-sky FPI can be used to detect and analyze the near-space neutral atmospheric wind field, which helps to understand the near-space atmosphere. |
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