著者

Katsuya Yamashita Satoru Yamaguchi Takayuki Saito Yuya Yamakura Eiichiro Kanda Sento Nakai Hiroki Motoyoshi

出版者

Meteorological Society of Japan

雑誌

SOLA (ISSN:13496476)

巻号頁・発行日

pp.2020-045, (Released:2020-11-23)

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A system with existing snowfall sensors, which is used to control the operation of the sprinkler snow removal system, was developed to acquire data that can be used to generate snowfall distribution with high spatiotemporal resolution. This had advantages such as low installation and management costs, as well as flexibility with respect to the configuration of its observation points. The results confirmed that this system, developed for experimental purposes in Nagaoka City (Niigata Prefecture), made it possible to generate the snowfall amount distribution as well as the precipitation rate within a 25 km × 30 km area at 10-min intervals based on in-situ measurements conducted at 16 ground-based points. A comparison of the system with other observation systems confirmed that it could detect detailed spatial snowfall variations, which could not be achieved using existing the ground-based observation networks, and provide sufficient observation accuracy for winter road management. Since many snowfall sensors are installed on the Sea of Japan side of mainland of Japan, this system has the potential for extensive application in the snowy areas of Japan characterized by heavy snowfall at temperatures of approximately 0°C.

著者

Akihiro Hashimoto Hiroki Motoyoshi Narihiro Orikasa Ryohei Misumi

出版者

Meteorological Society of Japan

雑誌

SOLA (ISSN:13496476)

巻号頁・発行日

vol.16, pp.51-56, 2020 (Released:2020-03-25)

参考文献数

36

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We have developed a new method of diagnosing the characteristics of ice particles using a bulk microphysics model. Our model tracked the mass compositions of different classes of ice particles, using their microphysical process of origin, such as water vapor deposition and riming. The mass composition from depositional growth was further divided into six components by the temperature and humidity ranges corresponding to the typical growth habits of ice crystals. In test simulations, the new framework successfully revealed the influences of riming and depositional growths of ice particles within clouds and on surface snowfall. The new approach enables weather prediction models to provide much more information on the characteristics of ice particles regarding crystal habits and the extent of riming.

著者

Akihiro Hashimoto Hiroki Motoyoshi Narihiro Orikasa Ryohei Misumi

出版者

Meteorological Society of Japan

雑誌

SOLA (ISSN:13496476)

巻号頁・発行日

pp.2020-009, (Released:2020-03-02)

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We have developed a new method of diagnosing the characteristics of ice particles using a bulk microphysics model. Our model tracked the mass compositions of different classes of ice particles, using their microphysical process of origin, such as water vapor deposition and riming. The mass composition from depositional growth was further divided into six components by the temperature and humidity ranges corresponding to the typical growth habits of ice crystals. In test simulations, the new framework successfully revealed the influences of riming and depositional growths of ice particles within clouds and on surface snowfall. The new approach enables weather prediction models to provide much more information on the characteristics of ice particles regarding crystal habits and the extent of riming.

著者

Katsuya Yamashita Satoru Yamaguchi Takayuki Saito Yuya Yamakura Eiichiro Kanda Sento Nakai Hiroki Motoyoshi

出版者

Meteorological Society of Japan

雑誌

SOLA (ISSN:13496476)

巻号頁・発行日

vol.16, pp.271-276, 2020 (Released:2020-12-26)

参考文献数

16

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A system with existing snowfall sensors, which is used to control the operation of the sprinkler snow removal system, was developed to acquire data that can be used to generate snowfall distribution with high spatiotemporal resolution. This had advantages such as low installation and management costs, as well as flexibility with respect to the configuration of its observation points. The results confirmed that this system, developed for experimental purposes in Nagaoka City (Niigata Prefecture), made it possible to generate the snowfall amount distribution as well as the precipitation rate within a 25 km × 30 km area at 10-min intervals based on in-situ measurements conducted at 16 ground-based points. A comparison of the system with other observation systems confirmed that it could detect detailed spatial snowfall variations, which could not be achieved using existing the ground-based observation networks, and provide sufficient observation accuracy for winter road management. Since many snowfall sensors are installed on the Sea of Japan side of mainland of Japan, this system has the potential for extensive application in the snowy areas of Japan characterized by heavy snowfall at temperatures of approximately 0°C.