Presentation Information
[PEM16-13]Atmospheric Dynamic Coupling Processes: Wind, Gravity Waves revealed by MST Radars in China★Invited Papers
*Yufang TIAN1,2, Daren Lyu1,2, Kaoru Sato3 (1.Institute of Atmospheric Physics, Chinese Academy of Sciences, LAGEO, 2.University of Chinese Academy of Science, 3.The University of Tokyo)
Keywords:
Atmospheric Dynamic Coupling Processes,Gravity Waves,MST Radar
The Mesosphere-Stratosphere-Troposphere (MST) radars have proven to be a powerful tool for investigating various atmospheric dynamics in the lower and middle atmosphere and ionosphere, though it is limited around the world. It works on the VHF band and can realize the observation of the atmosphere under all weather conditions and at all times by detecting the echoes from the atmospheric refractive index variations, which are induced by the fluctuations in humidity, temperature, and electron density. It can provide continuous high time-height resolutions and quasi-simultaneous observations of the horizontal wind and vertical velocities of different height ranges below 100 km, except for about 25~60 km.
With the support of the Chinese meridian project, the Institute of Atmospheric Physics, Chinese Academy of Sciences (IAP, CAS) presided over the construction of the Beijing MST Radar. It is verified that the Beijing MST radar has shown good detection capability and data reliability by comparison with radiosondes and meteor radar horizontal wind measurements. High-quality spectral width, vertical velocity data, et al., were obtained by improving the power spectral density data processing algorithm. Based on these valuable data sets, new cognition in the aspects of gravity waves and turbulence characteristics in the mid-latitude were obtained. The Inertia-gravity Waves (IGWs) parameters show dependence on both heights, months, and vertical propagating directions, indicating that wave sources are complicated in the area represented by radar observations.
Supported by the second phase of the Chinese Meridian Project, the new powerful Tibetan Plateau (Yangbajing) MST radar (4300 m MSL) obtained atmospheric echoes for the first time on October 18, 2023 and was put into operation since September 2024. It is a fully digital multipolar phased array MST radar with a more flexible detection ability. The Tibetan Plateau (Yangbajing) MST radar operates at 50 MHz. It has a circular array with a diameter of 153 m. The peak power is 1.92 MW. The preliminary verification results of the detection capability and data quality of the Tibetan Plateau (Yangbajing) MST radar show that it will play an essential and indispensable role in studying the dynamics of the whole atmosphere over the Tibetan Plateau and in revealing the vertical coupling process between the lower atmosphere, the middle and upper atmosphere. The preliminary results will be presented.
With the support of the Chinese meridian project, the Institute of Atmospheric Physics, Chinese Academy of Sciences (IAP, CAS) presided over the construction of the Beijing MST Radar. It is verified that the Beijing MST radar has shown good detection capability and data reliability by comparison with radiosondes and meteor radar horizontal wind measurements. High-quality spectral width, vertical velocity data, et al., were obtained by improving the power spectral density data processing algorithm. Based on these valuable data sets, new cognition in the aspects of gravity waves and turbulence characteristics in the mid-latitude were obtained. The Inertia-gravity Waves (IGWs) parameters show dependence on both heights, months, and vertical propagating directions, indicating that wave sources are complicated in the area represented by radar observations.
Supported by the second phase of the Chinese Meridian Project, the new powerful Tibetan Plateau (Yangbajing) MST radar (4300 m MSL) obtained atmospheric echoes for the first time on October 18, 2023 and was put into operation since September 2024. It is a fully digital multipolar phased array MST radar with a more flexible detection ability. The Tibetan Plateau (Yangbajing) MST radar operates at 50 MHz. It has a circular array with a diameter of 153 m. The peak power is 1.92 MW. The preliminary verification results of the detection capability and data quality of the Tibetan Plateau (Yangbajing) MST radar show that it will play an essential and indispensable role in studying the dynamics of the whole atmosphere over the Tibetan Plateau and in revealing the vertical coupling process between the lower atmosphere, the middle and upper atmosphere. The preliminary results will be presented.