UNUMA Takashi

[日本語]

Job title	Researcher/The 3rd lab./Department of Typhoon and Severe Weather Research
E-mail	hiunumatakashiu
Personal
Expertise	Mesoscale meteorology, Heavy-rain-producing mesoscale convective systems, Radar meteorology, Signal processing, Raindrop size distribution
Degree	Ph.D.
Publications	Unuma, T., 2025: Observed relationship between drop size distribution including a breakup signature and environmental properties near Kumagaya in eastern Japan. Atmospheric Chemistry and Physics, 25, 11109–11128. Unuma, T., H. Yamauchi, T. Kato, A. Umehara, A. Hashimoto, A. Adachi, and N. Nagumo, 2025: Characteristics of raindrop size distribution using 10-year disdrometer data in eastern Japan. Journal of the Meteorological Society of Japan, 103, 219–232. Unuma, T., 2024: Three-dimensional structure of an equilibrium drop size distribution within a convective system in Japan. Scientific Online Letters on the Atmosphere, 20, 47–54. Unuma, T., H. Yamauchi, A. Umehara, and T. Kato, 2023: An equilibrium raindrop size distribution associated with a heavy-rain-producing convective system in Japan. Scientific Online Letters on the Atmosphere, 19, 150–156. Unuma, T., and T. Takemi, 2021: Rainfall characteristics and their environmental conditions during the heavy rainfall events over Japan in July of 2017 and 2018. Journal of the Meteorological Society of Japan, 99, 165–180. Takemi, T., and T. Unuma, 2020: Environmental factors for the development of heavy rainfall in the eastern part of Japan during Typhoon Hagibis (2019). Scientific Online Letters on the Atmosphere, 16, 30–36. Takemi, T., and T. Unuma, 2019: Diagnosing environmental properties of the July 2018 Heavy Rainfall Event in Japan. Scientific Online Letters on the Atmosphere, 15A, 60–65. Unuma, T., and T. Takemi, 2016b: A role of environmental shear on the organization mode of quasi-stationary convective clusters during the warm season in Japan. Scientific Online Letters on the Atmosphere, 12, 111–115. Unuma, T., and T. Takemi, 2016a: Characteristics and environmental conditions of quasi-stationary convective clusters during the warm season in Japan. Quarterly Journal of the Royal Meteorological Society, 142, 1232–1249.
Project	https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24K17126/