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Comparison of thres...
Comparison of threshold hydrologic response across northern catchments
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Ali, Genevieve (author)
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Tetzlaff, Doerthe (author)
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McDonnell, Jeffrey J. (author)
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Soulsby, Chris (author)
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Carey, Sean (author)
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- Laudon, Hjalmar (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skogens ekologi och skötsel,Department of Forest Ecology and Management
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McGuire, Kevin (author)
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Buttle, Jim (author)
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- Seibert, Jan (author)
- Uppsala universitet,Luft-, vatten- och landskapslära,University of Zürich,Uppsala University
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Shanley, Jamie (author)
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(creator_code:org_t)
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- 2015-06-10
- 2015
- English.
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In: Hydrological Processes. - : Wiley. - 0885-6087 .- 1099-1085. ; 29:16, s. 3575-3591
- Related links:
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https://aura.abdn.ac...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://res.slu.se/i...
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Abstract
Subject headings
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- Nine mid-latitude to high-latitude headwater catchments - part of the Northern Watershed Ecosystem Response to Climate Change (North-Watch) programme - were used to analyze threshold response to rainfall and snowmelt-driven events and link the different responses to the catchment characteristics of the nine sites. The North-Watch data include daily time-series of various lengths of multiple variables such as air temperature, precipitation and discharge. Rainfall and meltwater inputs were differentiated using a degree-day snowmelt approach. Distinct hydrological events were identified, and precipitation-runoff response curves were visually assessed. Results showed that eight of nine catchments showed runoff initiation thresholds and effective precipitation input thresholds. For rainfall-triggered events, catchment hydroclimatic and physical characteristics (e.g. mean annual air temperature, median flow path distance to the stream, median sub-catchment area) were strong predictors of threshold strength. For snowmelt-driven events, however, thresholds and the factors controlling precipitation-runoff response were difficult to identify. The variability in catchments responses to snowmelt was not fully explained by runoff initiation thresholds and input magnitude thresholds. The quantification of input intensity thresholds (e.g. snow melting and permafrost thawing rates) is likely required for an adequate characterization of nonlinear spring runoff generation in such northern environments.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Skogsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Forest Science (hsv//eng)
Keyword
- thresholds
- rainfall
- snowmelt
- quickflow
- dynamic storage deficit
- North-Watch programme
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Ali, Genevieve
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Tetzlaff, Doerth ...
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McDonnell, Jeffr ...
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Soulsby, Chris
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Carey, Sean
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Laudon, Hjalmar
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show more...
-
McGuire, Kevin
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Buttle, Jim
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Seibert, Jan
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Shanley, Jamie
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Oceanography Hyd ...
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- AGRICULTURAL SCIENCES
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AGRICULTURAL SCI ...
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and Agriculture Fore ...
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and Forest Science
- Articles in the publication
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Hydrological Pro ...
- By the university
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Uppsala University
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Swedish University of Agricultural Sciences