DOI: 10.5194/hess-23-1867-2019
论文题名: Midwinter melts in the Canadian prairies: Energy balance and hydrological effects
作者: Pavlovskii I. ; Hayashi M. ; Itenfisu D.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期: 4 起始页码: 1867
结束页码: 1883
语种: 英语
Scopus关键词: Groundwater
; Runoff
; Snow melting systems
; Canadian prairie
; Hydrological cycles
; Hydrological effects
; Remote sensing data
; Sensible heat flux
; Snowpack accumulation
; Source of energy
; Surface runoffs
; Remote sensing
; energy balance
; groundwater
; hydrological cycle
; meltwater
; remote sensing
; runoff
; sensible heat flux
; snow accumulation
; snowmelt
; snowpack
; solar radiation
; streamflow
; winter
; Canada
; Prairie Provinces
英文摘要: Snowpack accumulation and depletion are important elements of the hydrological cycle in the Canadian prairies. The surface runoff generated during snowmelt is transformed into streamflow or fills numerous depressions driving the focussed recharge of groundwater in this dry setting. The snowpack in the prairies can undergo several cycles of accumulation and depletion in a winter. The timing of the melt affects the mechanisms of snowpack depletion and their hydrological implications. The effects of midwinter melts were investigated at four instrumented sites in the Canadian prairies. Unlike net radiation-driven snowmelt during spring melt, turbulent sensible heat fluxes were the dominant source of energy inputs for midwinter melt occurring in the period with low solar radiation inputs. Midwinter melt events affect several aspects of hydrological cycle with lower runoff ratios than subsequent spring melt events, due to their role in the timing of the focussed recharge. Remote sensing data have shown that midwinter melt events regularly occur under the present climate throughout the Canadian prairies, indicating applicability of the study findings throughout the region. © Author(s) 2019. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162996
Appears in Collections: 气候变化与战略
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作者单位: Pavlovskii, I., Department of Geoscience, University of Calgary, Calgary, AB T2N 1N4, Canada; Hayashi, M., Department of Geoscience, University of Calgary, Calgary, AB T2N 1N4, Canada; Itenfisu, D., Alberta Agriculture and Forestry, Edmonton, AB T6H 5T6, Canada
Recommended Citation:
Pavlovskii I.,Hayashi M.,Itenfisu D.. Midwinter melts in the Canadian prairies: Energy balance and hydrological effects[J]. Hydrology and Earth System Sciences,2019-01-01,23(4)