Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1992-12-01 |
タイトル |
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タイトル |
ON THE ESTIMATION OF PRECIPITATION RATE BY A NEW ANALYTICAL METHOD FOR THE METEOROLOGICAL RADAR ECHO (1) |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ID登録 |
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ID登録 |
10.15094/00003749 |
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ID登録タイプ |
JaLC |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
記事種別(英) |
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en |
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ABSTRACT |
論文名よみ |
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その他のタイトル |
ON THE ESTIMATION OF PRECIPITATION RATE BY A NEW ANALYTICAL METHOD FOR THE METEOROLOGICAL RADAR ECHO (1) |
著者名よみ |
ホシヤマ, ミツオ
ハタナカ, マサヒコ
ニシツジ, アキラ
ワダ, マコト
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著者名(英) |
HOSHIYAMA, Mitsuo
HATANAKA, Masahiko
NISHITSUJI, Akira
WADA, Makoto
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著者所属(英) |
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en |
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Research Institute of Applied Electricity, Hokkaido University |
著者所属(英) |
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en |
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Faculty of Engineering, Muroran Institute of Technology |
著者所属(英) |
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en |
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Faculty of Engineering, Muroran Institute of Technology |
著者所属(英) |
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en |
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National Institute of Polar Research |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
A vertical pointing radar was installed at Syowa Station, Antarctica, in 1988. Estimations of precipitation from a single frequency radar echo data require additional information, because radar echo from precipitation depends on precipitation rate at each altitude, types and sizes of snowflakes. Konishi et al. (H. KONISHI et al. : Proc. NIPR Symp. Polar Meteorol. Glaciol., 5,90,1992) have tried to estimate precipitation using a new radar reflective factor (Z)-precipitation rate (R) relationship. We have studied the feasibility of another approach to estimate precipitation, this case snowfall, using a vertical profile of snow particles. Assumption of snow particle types is introduced using temperature data at each altitude from radiosonde observations. If the type of snow particle is know, most parameters to calculate radar echo-falling velocity, water content, and dielectric constant of snow particles, can be estimated (A. NISHITSUJI et al. : Trans. IEEE. J66-B, 1163,1983). Remaining unknown factors are size distribution of snow particles and snowfall rate at each altitude. According to our calculations using observed radar echo data and some simple size distributions, snowfall rates are dramatically changed by size distribution function. We will determine the size distribution near the ground using snowflake data which were taken by a video camera at Syowa Station, and assume a size distribution model at each altitude to estimate precipitation at Syowa Station. Then we will check whether our model is consistent with other observations, for example by microwave radiometer. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA10756213 |
書誌情報 |
Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
巻 6,
p. 145,
発行日 1992-12
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出版者 |
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出版者 |
National Institute of Polar Research |