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Interannual fluctuations of the relationship between winter precipitation and air temperature in the heavy-snowfall zone of Japan
https://nied-repo.bosai.go.jp/records/5734
https://nied-repo.bosai.go.jp/records/573456e13005-02f1-40d3-9a7d-e6f8f0dbe951
Item type | researchmap(1) | |||||||||||
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公開日 | 2023-03-30 | |||||||||||
タイトル | ||||||||||||
言語 | en | |||||||||||
タイトル | Interannual fluctuations of the relationship between winter precipitation and air temperature in the heavy-snowfall zone of Japan | |||||||||||
言語 | ||||||||||||
言語 | eng | |||||||||||
著者 |
Satoru Yamaguchi
× Satoru Yamaguchi
× Katsushi Iwamoto
× Sento Nakai
|
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抄録 | ||||||||||||
内容記述タイプ | Other | |||||||||||
内容記述 | Regions of Japan facing the Sea of Japan have some of the world's deepest seasonal snowpack, although air temperatures averaged over the coldest winter months (January February) are above 0 degrees C in this mid-altitude zone (35-40 degrees N). Therefore, even a slight temperature increase is likely to drastically decrease the snow depth in this area by changing the precipitation form from snow to rain. In this study, to enhance understanding of winter precipitation conditions, we introduce the winter precipitation curve (WPC), which plots the distribution of winter precipitation (December February) against the corresponding air temperature using hourly data. We then examine the relationship between the WPC and regional climate conditions. The WPC was classified into two types in the study: the single-peak (SP) type, having one sharp peak near 0 degrees C, and the multiple-peaks (MP) type, having several small peaks. Here 'peak' indicates that precipitation frequently occurs at a certain temperature. Peaks of the MP type changed position with fluctuations in mean winter temperature, but the peak of the SP type moved only slightly despite annual fluctuations in winter mean temperature. One of the multiple peaks of the MP type appeared at 0 degrees C and this peak also remained nearly stationary with fluctuations in winter mean temperature. The peak of the WPC appearing near 0 degrees C in both the SP and MP types likely resulted from the development of the 0 degrees C isothermal layer due to the cooling effect of melting snow particles. | |||||||||||
言語 | en | |||||||||||
書誌情報 |
en : ANNALS OF GLACIOLOGY 巻 54, 号 62, p. 183-188, 発行日 2013 |
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出版者 | ||||||||||||
言語 | en | |||||||||||
出版者 | CAMBRIDGE UNIV PRESS | |||||||||||
ISSN | ||||||||||||
収録物識別子タイプ | EISSN | |||||||||||
収録物識別子 | 1727-5644 | |||||||||||
DOI | ||||||||||||
関連識別子 | 10.3189/2013AoG62A302 |