DOI: 10.1002/hyp.13608
论文题名: Influence of landscape and hydrological factors on stream–air temperature relationships at regional scale
作者: Beaufort A. ; Moatar F. ; Sauquet E. ; Loicq P. ; Hannah D.M.
刊名: Hydrological Processes
ISSN: 8856087
出版年: 2020
卷: 34, 期: 3 语种: 英语
英文关键词: CART method
; classification
; regional scale
; stream temperature
; thermal sensitivity
Scopus关键词: Atmospheric temperature
; Catchments
; Classification (of information)
; Groundwater
; Open hearth furnaces
; CART method
; Classification and regression tree
; Environmental variables
; Hydrological factors
; Main controlling factors
; Regional scale
; Stream temperatures
; Thermal sensitivity
; Climate change
; air temperature
; hydrological regime
; landscape change
; sensitivity analysis
; stream
; thermal conductivity
英文摘要: Identifying the main controlling factors of the stream temperature (Tw) variability is important to target streams sensitive to climate and other drivers of change. The thermal sensitivity (TS), based on relationship between air temperature (Ta) and Tw, of a given stream can be used for quantifying the streams sensitivity to future climate change. This study aims to compare TS for a wide range of temperate streams located within a large French catchment (110,000 km2) using 4 years of hourly data (2008–2012) and to cluster stations sharing similar thermal variabilities and thereby identify environmental key drivers that modify TS at the regional scale. Two successive classifications were carried out: (a) first based on Ta–Tw relationship metrics including TS and (b) second to establish a link between a selection of environmental variables and clusters of stations. Based on weekly Ta–Tw relationships, the first classification identified four thermal regimes with differing annual Tw in terms of magnitude and amplitudes in comparison with Ta. The second classification, based on classification and regression tree method, succeeded to link each thermal regime to different environmental controlling factors. Streams influenced by both groundwater inflows and shading are the most moderated with the lowest TS and an annual amplitude of Tw around half of the annual amplitude of Ta. Inversely, stations located on large streams with a high distance from source and not (or slightly) influenced by groundwater inflows nor shading showed the highest TS, and so, they are very climate sensitive. These findings have implications for guiding river basin managers and other stakeholders in implementing thermal moderation measures in the context of a warming climate and global change. © 2019 The Authors. Hydrological Processes published by John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159988
Appears in Collections: 气候变化与战略
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作者单位: EA 6293 GéHCO Géo-Hydrosystèmes Continentaux, Université François-Rabelais de Tours, Parc de Grandmont, Tours, 37200, France; UR RiverLy, Irstea, centre de Lyon-Villeurbanne, 5 rue de la Doua CS 20244, Villeurbanne, 69625, France; School of Geography, Earth and Environmental Sciences, University of Birmingham Edgbaston, Birmingham, B15 2TT, United Kingdom
Recommended Citation:
Beaufort A.,Moatar F.,Sauquet E.,et al. Influence of landscape and hydrological factors on stream–air temperature relationships at regional scale[J]. Hydrological Processes,2020-01-01,34(3)