DOI: 10.5194/hess-23-1593-2019
论文题名: Evaluating seasonal hydrological extremes in mesoscale (pre-)Alpine basins at coarse 0.5° and fine hyperresolution
作者: Buitink J. ; Uijlenhoet R. ; Teuling A.J.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期: 3 起始页码: 1593
结束页码: 1609
语种: 英语
Scopus关键词: Earth sciences
; Hydrology
; Complex topographies
; Distributed hydrological model
; Distributed modeling
; High-resolution models
; Hydrological extremes
; Hydrological models
; Hydrological response
; Spatial resolution
; Catchments
; alpine environment
; evapotranspiration
; extreme event
; hydrological modeling
; hydrological response
; hydrology
; land cover
; mesoscale meteorology
; numerical model
; precipitation (climatology)
; runoff
; seasonal variation
; spatial resolution
; streamflow
; temperature
; Alps
; Switzerland
英文摘要: Hydrological models are being applied for impact assessment across a wide range of resolutions. In this study, we quantify the effect of model resolution on the simulated hydrological response in five mesoscale basins in the Swiss Alps using the distributed hydrological model Spatial Processes in Hydrology (SPHY). We introduce a new metric to compare a range of values resulting from a distributed model with a single value: the density-weighted distance (DWD). Model simulations are performed at two different spatial resolutions, matching common practices in hydrology: 500m×500m matching regional-scale models, and 40km×40km matching global-scale modeling. We investigate both the intra-basin response in seasonal streamflow and evapotranspiration from the high-resolution model and the difference induced by the two different spatial resolutions, with a focus on four seasonal extremes, selected based on temperature and precipitation. Results from the high-resolution model show that the intra-basin response covers a surprisingly large range of anomalies and show that it is not uncommon to have both extreme positive and negative flux anomalies occurring simultaneously within a catchment. The intra-basin response was grouped by land cover, where different dominant runoff-generating processes are driving the differences between these groups. The low-resolution model failed to capture the diverse and contrasting response from the high-resolution model, since neither the complex topography nor land cover classes were properly represented. DWD values show that, locally, the hydrological response simulated with a high-resolution model can be a lot more extreme than a low-resolution model might indicate, which has important implications for global or continental scale assessments carried out at coarse grids of 0:5°×0:5° or 0:25°× 0:25° resolution. © 2019 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163010
Appears in Collections: 气候变化与战略
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作者单位: Buitink, J., Hydrology and Quantitative Water Management Group, Wageningen University, Wageningen, Netherlands; Uijlenhoet, R., Hydrology and Quantitative Water Management Group, Wageningen University, Wageningen, Netherlands; Teuling, A.J., Hydrology and Quantitative Water Management Group, Wageningen University, Wageningen, Netherlands
Recommended Citation:
Buitink J.,Uijlenhoet R.,Teuling A.J.. Evaluating seasonal hydrological extremes in mesoscale (pre-)Alpine basins at coarse 0.5° and fine hyperresolution[J]. Hydrology and Earth System Sciences,2019-01-01,23(3)