globalchange  > 气候变化事实与影响
DOI: 10.5194/hess-18-5169-2014
Scopus记录号: 2-s2.0-84918528663
论文题名:
Technical note: Reducing the spin-up time of integrated surface water-groundwater models
作者: Ajami H; , Evans J; P; , McCabe M; F; , Stisen S
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2014
卷: 18, 期:12
起始页码: 5169
结束页码: 5179
语种: 英语
Scopus关键词: Arid regions ; Catchments ; Groundwater ; Runoff ; Soil moisture ; Computational burden ; Groundwater models ; Groundwater-surface waters ; Hydrologic models ; Initial conditions ; Integrated model framework ; Land surface modeling ; Model initialization ; Computer simulation ; catchment ; computer simulation ; groundwater-surface water interaction ; hydrological modeling ; numerical model ; semiarid region ; soil moisture ; water table ; Australia
英文摘要: One of the main challenges in the application of coupled or integrated hydrologic models is specifying a catchment's initial conditions in terms of soil moisture and depth-to-water table (DTWT) distributions. One approach to reducing uncertainty in model initialization is to run the model recursively using either a single year or multiple years of forcing data until the system equilibrates with respect to state and diagnostic variables. However, such "spin-up" approaches often require many years of simulations, making them computationally intensive. In this study, a new hybrid approach was developed to reduce the computational burden of the spin-up procedure by using a combination of model simulations and an empirical DTWT function. The methodology is examined across two distinct catchments located in a temperate region of Denmark and a semi-arid region of Australia. Our results illustrate that the hybrid approach reduced the spin-up period required for an integrated groundwater-surface water-land surface model (ParFlow.CLM) by up to 50%. To generalize results to different climate and catchment conditions, we outline a methodology that is applicable to other coupled or integrated modeling frameworks when initialization from an equilibrium state is required. © Author(s) 2014.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78040
Appears in Collections:气候变化事实与影响

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作者单位: School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW, Australia; Connected Waters Initiative Research Centre, University of New South Wales, Sydney, NSW, Australia; Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia; ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, NSW, Australia; Water Desalination and Reuse Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia; Geological Survey of Denmark and Greenland, Copenhagen, Denmark

Recommended Citation:
Ajami H,, Evans J,P,et al. Technical note: Reducing the spin-up time of integrated surface water-groundwater models[J]. Hydrology and Earth System Sciences,2014-01-01,18(12)
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