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  1. 防災科研関係論文

Empirical Relationships for Estimating Liquid Water Fraction of Melting Snowflakes

https://nied-repo.bosai.go.jp/records/4966
https://nied-repo.bosai.go.jp/records/4966
5f1e667e-ff51-4e07-a212-2a39e50e0e53
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Empirical Relationships for Estimating Liquid Water Fraction of Melting Snowflakes
言語
言語 eng
著者 Ryohei Misumi

× Ryohei Misumi

en Ryohei Misumi

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Hiroki Motoyoshi

× Hiroki Motoyoshi

en Hiroki Motoyoshi

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Satoru Yamaguchi

× Satoru Yamaguchi

en Satoru Yamaguchi

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Sento Nakai

× Sento Nakai

en Sento Nakai

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Masaaki Ishizaka

× Masaaki Ishizaka

en Masaaki Ishizaka

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Yasushi Fujiyoshi

× Yasushi Fujiyoshi

en Yasushi Fujiyoshi

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抄録
内容記述タイプ Other
内容記述 The liquid water fraction of individual snowflakes f is an important parameter when calculating the radar reflectivity of a melting layer. A ground-based observation of fat Nagaoka, Japan, was conducted by using dye-treated filter papers that were kept at a temperature of 0 degrees C. From the results of these measurements, which consisted of 6179 particles taken with 44 sheets of filter paper, two empirical relationships are proposed. The first is a relationship between the ratio of liquid water flux to total precipitation intensity (F-L; taking values from 0 to 1) and meteorological surface data. The second is a relationship to estimate fusing the melted diameter of a snowflake, median mass diameter, and F-L. It was determined that the root-mean-square errors for estimating F-L and f by using these relationships were 0.160 and 0.144, respectively. It was also found that the ratio of raindrop flux to the total precipitation intensity F-R was always below 0.1 when F-L was less than 0.6 but increased rapidly when F-L exceeded 0.8.
言語 en
書誌情報 en : JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY

巻 53, 号 10, p. 2232-2245, 発行日 2014-10
出版者
言語 en
出版者 AMER METEOROLOGICAL SOC
ISSN
収録物識別子タイプ EISSN
収録物識別子 1558-8432
DOI
関連識別子 10.1175/JAMC-D-13-0169.1
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