Japan Geoscience Union Meeting 2023

Presentation information

[J] Oral

A (Atmospheric and Hydrospheric Sciences ) » A-AS Atmospheric Sciences, Meteorology & Atmospheric Environment

[A-AS09] Stratosphere-troposphere Processes And their Role in Climate

Fri. May 26, 2023 9:00 AM - 10:15 AM 201A (International Conference Hall, Makuhari Messe)

convener:Masakazu Taguchi(Aichi University of Education), Nawo Eguchi(Research Institute for Applied Mechanics, Kyushu University), Masashi Kohma(Department of Earth and Planet Science, Graduate School of Science, The University of Tokyo), Shunsuke Noguchi(Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University), Chairperson:Masakazu Taguchi(Aichi University of Education)


9:15 AM - 9:30 AM

[AAS09-02] On the variations of wind velocity and temperature above 30 km altitude in Okinawa using large rubber balloons

★Invited Papers

*Takenari Kinoshita1, Shin-Ya Ogino1, Junko Suzuki1, Ryuichi SHIROOKA1 (1.Japan Agency for Marine-Earth Science and Technology)

Keywords:Middle atmosphere , Atmospheric waves, gravity wave

Since the end of continuously rocketsonde observations, which had been conducted until the 1990s, direct observations at altitude higher than 30 km have been conducted only intermittently, and there are fewer observation data than in the lower altitude regions.
Therefore, the detailed structure of atmospheric waves driving the atmospheric general circulation and the equatorial quasi-biennial oscillation, especially gravity waves with small vertical wavelengths, is still unclear.
We have been conducting high-altitude radiosonde observations using large rubber balloons in order to construct a method to observe wind velocity and temperature variations from the ground at altitudes above 30 km at multiple observation points. In this presentation, we introduce the relation between gas volume and arrival altitude, tropopause temperature and arrival altitude, and behavior near the arrival altitude obtained from the previous observation. In addition, the initial results of radiosonde observations conducted at the University of the Ryukyus in September, November, in 2022 and January in 2023 will be presented.