Possible hydrological effect of rainfall duration bias in dynamical downscaling

Tamaki, Yuta; Inatsu, Masaru; Yamada, Tomohito J.

Possible hydrological effect of rainfall duration bias in dynamical downscaling

Tamaki, Yuta; Inatsu, Masaru; Yamada, Tomohito J.

Hydrological Research Letters, 2019, 13(4), 55-61

Permalink : https://hdl.handle.net/2115/77049

このアイテムのアクセス数:515件（2026-08-18 12:00 集計）

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https://doi.org/10.3178/hrl.13.55			13

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アクセス権	open access
URI	https://hdl.handle.net/2115/77049
タイトル	Possible hydrological effect of rainfall duration bias in dynamical downscaling
著者	Tamaki, Yuta ; Inatsu, Masaru ; Yamada, Tomohito J.
著者名 Tamaki, Yuta
e-Rad_Researcher 80422450 著者名 Inatsu, Masaru
e-Rad_Researcher 10554959 著者名 Yamada, Tomohito J.
言語	英語
キーワード	rainfall duration bias
	runoff
	heavy rainfall events
	weather pattern
	dynamical down-scaling
発行日	2019-10-16
出版者	JSHWR, JAGH, JAHS, JSPH
収録物名	Hydrological Research Letters
巻(号)	13(4)
ページ	55-61
抄録	Motivated by the problem of rainfall duration bias typically found in dynamical downscaling, its possible effect on hydrology was evaluated for heavy rainfall events over Kyushu, Japan, during summer. Heavy rainfall in western Kyushu is often related to a persistent Baiu rainband across Kyushu, while in eastern Kyushu it is related to the passage of typhoons near Kyushu. For typical heavy-rainfall periods, we ran a tank model for several target rivers to analyze runoff and water-depth sensitivity to the hyetograph by artificially extending the rainfall duration to 8 hours while maintaining the same total rainfall. This showed that a spike in peak runoff was suppressed by prolonged weak rainfall as typically found in downscaling outputs. The timing of rising runoff and water depth in the tank model was shifted earlier.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution 4.0 International
PISSN	1882-3416
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.3178/hrl.13.55