Preprints
https://doi.org/10.5194/egusphere-2025-2486
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/egusphere-2025-2486
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
04 Jul 2025
| 04 Jul 2025
Status: this preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).
Development and validation of a ground-based Asymmetric Spatial Heterodyne Spectroscopy (ASHS) system for sounding neutral wind in the mesopause region
Abstract. Winds in the mesopause region are key to understanding atmospheric dynamics. This study presents a novel ground-based Asymmetric Spatial Heterodyne Spectroscopy (ASHS) system designed to measure these winds by observing the nighttime green line airglow of atomic oxygen. The system’s configuration, thermal behavior, and calibration procedures are detailed. The as-built configuration meets the performance expectations established during the design phase, enabling wind measurements with an accuracy better than 2 m/s. Field observations from Mohe Station (53.5° N, 122.3° E) during geomagnetically quiet conditions demonstrate good agreement with co-located LiDAR data, validating the ASHS system's capability to derive mesopause winds from interferograms.
How to cite. Zhu, G., Zhu, Y., Kaufmann, M., Wang, T., Liu, W., Yuan, W., Liu, S., Yang, G., and Xu, J.: Development and validation of a ground-based Asymmetric Spatial Heterodyne Spectroscopy (ASHS) system for sounding neutral wind in the mesopause region, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2025-2486, 2025.
Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
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Guangyi Zhu
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
Hainan National Field Science Observation and Research Observatory for Space Weather, Hainan 571734, China
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
University of Chinese Academy of Sciences, Beijing 100190, China
Hainan National Field Science Observation and Research Observatory for Space Weather, Hainan 571734, China
Martin Kaufmann
Institute of Energy and Climate Research (IEK-7), Jülich Research Centre, Jülich 52425, Germany
Tiancai Wang
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
University of Chinese Academy of Sciences, Beijing 100190, China
Hainan National Field Science Observation and Research Observatory for Space Weather, Hainan 571734, China
Weijun Liu
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
Hainan National Field Science Observation and Research Observatory for Space Weather, Hainan 571734, China
Wei Yuan
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
Hainan National Field Science Observation and Research Observatory for Space Weather, Hainan 571734, China
Siyin Liu
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
University of Chinese Academy of Sciences, Beijing 100190, China
Guotao Yang
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
University of Chinese Academy of Sciences, Beijing 100190, China
Hainan National Field Science Observation and Research Observatory for Space Weather, Hainan 571734, China
Jiyao Xu
CORRESPONDING AUTHOR
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
University of Chinese Academy of Sciences, Beijing 100190, China
Hainan National Field Science Observation and Research Observatory for Space Weather, Hainan 571734, China
Short summary
Winds in the mesopause region (85–100 km altitude) drive upper-atmospheric dynamics and energy transfer. We present the Asymmetric Spatial Heterodyne Spectrometer, a ground-based instrument, to measure winds by observing the green airglow of atomic oxygen. Lab tests demonstrated the instrument achieves <2 m/s accuracy. Field measurements at a high-latitude site in China showed strong agreement with independent LiDAR data, confirming that the system delivers reliable wind retrievals.
Winds in the mesopause region (85–100 km altitude) drive upper-atmospheric dynamics and...