DOI: 10.1002/2015GL064075
论文题名: Scale-dependent effects of solar radiation patterns on the snow-dominated hydrologic response
作者: Comola F. ; Schaefli B. ; Ronco P.D. ; Botter G. ; Bavay M. ; Rinaldo A. ; Lehning M.
刊名: Geophysical Research Letters
ISSN: 0094-9176
EISSN: 1944-8907
出版年: 2015
卷: 42, 期: 10 起始页码: 3895
结束页码: 3902
语种: 英语
英文关键词: geomorphology
; hillslope aspect
; runoff
; snowmelt
; solar radiation
; temperature index
Scopus关键词: Calibration
; Catchments
; Geomorphology
; Radiation
; Runoff
; Snow
; Snow melting systems
; Solar radiation
; Solute transport
; Stream flow
; Digital elevation model
; Hillslopes
; Snowmelt
; Spatial transferability
; Streamflow generations
; Swiss alpine catchments
; Temperature index
; Temperature index models
; Radiation effects
; alpine environment
; digital elevation model
; ecohydrology
; geomorphological response
; hillslope
; hydrological response
; scale effect
; snowmelt
; snowpack
; solar radiation
; streamflow
; temperature effect
; Alps
; Switzerland
英文摘要: Solar radiation is a dominant driver of snowmelt dynamics and streamflow generation in alpine catchments. A better understanding of how solar radiation patterns affect the hydrologic response is needed to assess when calibrated temperature-index models are likely to be spatially transferable for ecohydrological applications. We induce different solar radiation patterns in a Swiss Alpine catchment through virtual rotations of the digital elevation model. Streamflow simulations are performed at different spatial scales through a spatially explicit hydrological model coupled to a physically based snow model. Results highlight that the effects of solar radiation patterns on the hydrologic response are scale dependent, i.e., significant at small scales with predominant aspects and weak at larger scales where aspects become uncorrelated and orientation differences average out. Such scale dependence proves relevant for the spatial transferability of a temperature-index model, whose calibrated degree-day factors are stable to different solar radiation patterns for catchment sizes larger than the aspect correlation scale. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931459101&doi=10.1002%2f2015GL064075&partnerID=40&md5=bb9b16bb302453122eacfe3ebc38e627
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8792
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
Recommended Citation:
Comola F.,Schaefli B.,Ronco P.D.,et al. Scale-dependent effects of solar radiation patterns on the snow-dominated hydrologic response[J]. Geophysical Research Letters,2015-01-01,42(10).