Linking the Budyko framework and the Dunne diagram

Trancoso, Ralph, Larsen, Joshua R., McAlpine, Clive, McVicar, Tim R. and Phinn, Stuart (2016) Linking the Budyko framework and the Dunne diagram. Journal of Hydrology, 535 581-597. doi:10.1016/j.jhydrol.2016.02.017

Author Trancoso, Ralph
Larsen, Joshua R.
McAlpine, Clive
McVicar, Tim R.
Phinn, Stuart
Title Linking the Budyko framework and the Dunne diagram
Journal name Journal of Hydrology   Check publisher's open access policy
ISSN 0022-1694
Publication date 2016-04-01
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.jhydrol.2016.02.017
Open Access Status Not Open Access
Volume 535
Start page 581
End page 597
Total pages 17
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Subject 2312 Water Science and Technology
Abstract The spatial and temporal heterogeneity of climate, soils, topography and vegetation control the water and energy balances among catchments. Two well-known hydrological theories underpinning these processes are the Budyko framework and the Dunne diagram. Relating the scaling of water–energy balances (Budyko) and runoff generation mechanisms (Dunne) raises some important catchment comparison questions, namely: (i) how do streamflow characteristics vary according to the annual water and energy balances?; (ii) to what extent do biophysical drivers of runoff explain the observed streamflow variability?; and (iii) are there quantifiable process overlaps between these two approaches, and can they offer insights into the mechanics of catchment co-evolution? This study addresses these questions by analysing daily streamflow and precipitation time series data to quantify hydrological similarity across 355 catchments located along a tropical–temperate climatic gradient in eastern Australia. We used eight hydrological metrics to describe the hydrological response over a 33-year period (1980–2013). Hierarchical cluster, ordination analysis, the Budyko framework, and generalized additive models were used to evaluate hydrological similarity, extract the dominant response, and examine how the landscape and climatic characteristics of catchments influence the dominant streamflow response. The catchments were classified into five clusters based on the analysis of their hydrological characteristics and similarity, which vary along the annual water and energy balances gradient in the Budyko framework. Furthermore, we show that the streamflow similarity is explained by six catchment-specific biophysical factors that overlap with those described by the Dunne diagram for runoff generation, which in this case have the following order of relative importance: (i) Dryness Index; (ii) Fraction of Photosynthetically Active Radiation; (iii) Saturated Hydraulic Conductivity; (iv) Soil Depth; (v) Maximum Slope and (vi) Fraction of Woody Vegetation Cover. The research advances our understanding of the role of biophysical controls on hydrologic similarity and formal process links between the Budyko Framework and Dunne diagram of runoff mechanisms.
Keyword Streamflow regime
Catchment classification
Budyko framework
Dunne diagram
Hydrological similarity
Biophysical properties
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Geography, Planning and Environmental Management Publications
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