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Title: 衛星観測情報から推定する瞬時降雨量の時間相関長さのグローバル分布
Other Titles: Estimating Global Distribution of Temporal Correlation Length of Instantaneous Rainfall using Spaceborne Rainfall Observations
Authors: 中北, 英一  kyouindb  KAKEN_id
木島, 梨沙子  KAKEN_name
Author's alias: NAKAKITA, Eiichi
KONOSHIMA, Lisako
Keywords: 降雨場
TRMM搭載降水レーダ
TRMMマイクロ波放射計
低頻度観測
月降雨量
時間相関長さ
Precipitation field
TRMM/PR
TRMM/TMI
Low frequent observation
Monthly rainfall
Temporal correlation length
Issue Date: 1-Jun-2008
Publisher: 京都大学防災研究所
Journal title: 京都大学防災研究所年報. B = Disaster Prevention Research Institute Annuals. B
Volume: 51
Issue: B
Start page: 535
End page: 547
Abstract: 本研究では,月降雨量の分散を補正する式 (中北ら, 2006) を用いて,TRMMの低頻度観測情報から降雨場確率パラメータである瞬時降雨量の時間相関長さの全球推定を試みた。既往研究 (中北ら, 2006 ; Nakakita et al., 2007) による推定手法では,時間相関長さの推定可能領域が,TRMM/PRの観測頻度の多い中緯度領域のみであった。そこで本研究では,PRよりも観測頻度の多いTRMMのマイクロ波放射計TMIのデータを用い,さらに,TRMMの観測時間情報を取り込むことで,地点ごとにパラメータ推定を行う手法を新たに開発し,その結果,全球推定が可能となった。
This research is based on a synchronized campaign observation of C-band polarimetric radar, COBRA and video-sonde, which was carried out on Nov. 2007 in Okinawa, Japan. The observation was accomplished by constructing a method to synchronize C-band polarimetric radar, COBRA and video-sonde which observes the real hydrometeors. The observation succeeded to incorporate the polarimetric radar information and hydrometeor observed from video-sonde. Here, we investigate the relationship between the radar observation and hydrometeors, and seek for the possibility of classification as mixture of some types of hydrometeors from polarimetric radar observation.
URL: http://www.dpri.kyoto-u.ac.jp/nenpo/nenpo.html
URI: http://hdl.handle.net/2433/73378
Appears in Collections:No.51 B

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