DOI: 10.5194/hess-19-4689-2015
Scopus记录号: 2-s2.0-84948945640
论文题名: Defining high-flow seasons using temporal streamflow patterns from a global model
作者: Lee D ; , Ward P ; , Block P
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期: 11 起始页码: 4689
结束页码: 4705
语种: 英语
Scopus关键词: Stream flow
; Flood potential
; Global modeling
; High spatial resolution
; Limited observations
; Performance metrics
; Streamflow patterns
; Temporal pattern
; Threshold techniques
; Floods
; flood control
; flow measurement
; flow modeling
; flow pattern
; hydrological modeling
; hydrological regime
; seasonal variation
; streamflow
; temporal distribution
; threshold
; Canada
; Dartmouth
; Nova Scotia
英文摘要: Globally, flood catastrophes lead all natural hazards in terms of impacts on society, causing billions of dollars of damages annually. Here, a novel approach to defining high-flow seasons (3-month) globally is presented by identifying temporal patterns of streamflow. The main high-flow season is identified using a volume-based threshold technique and the PCR-GLOBWB model. In comparison with observations, 40 % (50 %) of locations at a station (sub-basin) scale have identical peak months and 81 % (89 %) are within 1 month, indicating fair agreement between modeled and observed high-flow seasons. Minor high-flow seasons are also defined for bi-modal flow regimes. Identified major and minor high-flow seasons together are found to well represent actual flood records from the Dartmouth Flood Observatory, further substantiating the model's ability to reproduce the appropriate high-flow season. These high-spatial-resolution high-flow seasons and associated performance metrics allow for an improved understanding of temporal characterization of streamflow and flood potential, causation, and management. This is especially attractive for regions with limited observations and/or little capacity to develop early warning flood systems. © 2015 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78375
Appears in Collections: 气候变化事实与影响
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作者单位: University of Wisconsin Madison, Madison, WI, United States; Institute for Environmental Studies, VU University, Amsterdam, Netherlands
Recommended Citation:
Lee D,, Ward P,, Block P. Defining high-flow seasons using temporal streamflow patterns from a global model[J]. Hydrology and Earth System Sciences,2015-01-01,19(11)