著者
MISUMI Ryohei UJI Yasushi TOBO Yutaka MIURA Kazuhiko UETAKE Jun IWAMOTO Yoko MAESAKA Takeshi IWANAMI Koyuru
出版者
Meteorological Society of Japan
雑誌
気象集誌. 第2輯 (ISSN:00261165)
巻号頁・発行日
pp.2018-040, (Released:2018-04-13)

Continuous observations of cloud droplet size distributions (DSDs) in low-level stratiform clouds have been conducted at a height of 458 m from Tokyo Skytree (a 634-m high broadcasting tower in Tokyo) using a cloud droplet spectrometer. In this report, the characteristics of cloud parameters related to the cloud DSD from June to December 2016 are presented. The mean cloud droplet number concentration (Nc), average diameters, and effective diameters of cloud droplets in non-drizzling clouds were 213 cm-3, 7.3 μm, and 9.5 μm, respectively, which are close to the reported values for continental stratiform clouds. The relationship between the liquid water content (LWC; g m-3), Nc (cm-3) and radar reflectivity (Z; mm6 m-3) was estimated as LWC = 0.17Nc0.50 Z0.45, with a coefficient of determination ( R 2) of 0.93. The observed cloud DSDs were well fitted by a lognormal distribution and the average median diameter of the fitted DSD was 6.6 μm.

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外部データベース (DOI)

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