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On the variations of wind velocity and temperature above 30 km altitude in Okinawa using large rubber balloons

Authors

Kinoshita,  Takenari
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Ogino,  Shin-Ya
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Suzuki,  Junko
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Shirooka,  Ryuichi
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Kinoshita, T., Ogino, S.-Y., Suzuki, J., Shirooka, R. (2023): On the variations of wind velocity and temperature above 30 km altitude in Okinawa using large rubber balloons, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3800


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020745
Abstract
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. As a result, there are fewer observation data than in the lower altitude regions. This causes problems such as large variations in wind velocity and temperature in the region above 30 km altitude among the global atmospheric reanalysis datasets. The variations are found to be large in the equatorial region for wind velocity and in the polar region for temperature. We have been conducting high-altitude radiosonde observations using large rubber balloons in order to construct a method to observe wind and temperature at altitudes above 30 km. In this presentation, we introduce the relation between the amount of gas, the tropopause temperature and the maximum altitude, and behavior near the maximum altitude obtained from our conducted observations. 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.