Technical Note: Reducing the spin-up time of integrated surface water–groundwater models

Handle URI:
http://hdl.handle.net/10754/593366
Title:
Technical Note: Reducing the spin-up time of integrated surface water–groundwater models
Authors:
Ajami, H.; Evans, J. P. ( 0000-0003-1776-3429 ) ; McCabe, Matthew ( 0000-0002-1279-5272 ) ; Stisen, S.
Abstract:
One of the main challenges in catchment scale application of coupled/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 reduce uncertainty in model initialization is to run the model recursively using a single 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 spin-up time for an integrated groundwater-surface water-land surface model (ParFlow.CLM) by using a combination of ParFlow.CLM simulations and an empirical DTWT function. The methodology is examined in two catchments located in the temperate and semi-arid regions of Denmark and Australia respectively. Our results illustrate that the hybrid approach reduced the spin-up time required by ParFlow.CLM by up to 50%, and we outline a methodology that is applicable to other coupled/integrated modelling frameworks when initialization from equilibrium state is required.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Citation:
Technical Note: Reducing the spin-up time of integrated surface water–groundwater models 2014, 11 (6):6969 Hydrology and Earth System Sciences Discussions
Publisher:
Copernicus GmbH
Journal:
Hydrology and Earth System Sciences Discussions
Issue Date:
26-Jun-2014
DOI:
10.5194/hessd-11-6969-2014
Type:
Article
ISSN:
1812-2116
Additional Links:
http://www.hydrol-earth-syst-sci-discuss.net/11/6969/2014/
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorAjami, H.en
dc.contributor.authorEvans, J. P.en
dc.contributor.authorMcCabe, Matthewen
dc.contributor.authorStisen, S.en
dc.date.accessioned2016-01-13T09:45:15Zen
dc.date.available2016-01-13T09:45:15Zen
dc.date.issued2014-06-26en
dc.identifier.citationTechnical Note: Reducing the spin-up time of integrated surface water–groundwater models 2014, 11 (6):6969 Hydrology and Earth System Sciences Discussionsen
dc.identifier.issn1812-2116en
dc.identifier.doi10.5194/hessd-11-6969-2014en
dc.identifier.urihttp://hdl.handle.net/10754/593366en
dc.description.abstractOne of the main challenges in catchment scale application of coupled/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 reduce uncertainty in model initialization is to run the model recursively using a single 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 spin-up time for an integrated groundwater-surface water-land surface model (ParFlow.CLM) by using a combination of ParFlow.CLM simulations and an empirical DTWT function. The methodology is examined in two catchments located in the temperate and semi-arid regions of Denmark and Australia respectively. Our results illustrate that the hybrid approach reduced the spin-up time required by ParFlow.CLM by up to 50%, and we outline a methodology that is applicable to other coupled/integrated modelling frameworks when initialization from equilibrium state is required.en
dc.language.isoenen
dc.publisherCopernicus GmbHen
dc.relation.urlhttp://www.hydrol-earth-syst-sci-discuss.net/11/6969/2014/en
dc.rightsArchived with thanks to Hydrology and Earth System Sciences Discussions.This work is distributed under the Creative Commons Attribution 3.0 License.en
dc.titleTechnical Note: Reducing the spin-up time of integrated surface water–groundwater modelsen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalHydrology and Earth System Sciences Discussionsen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionSchool of Civil and Environmental Engineering, University of New South Wales, Sydney, Australiaen
dc.contributor.institutionConnected Waters Initiative Research Centre, University of New South Wales, Sydney, Australiaen
dc.contributor.institutionClimate Change Research Centre, University of New South Wales, Sydney, Australiaen
dc.contributor.institutionARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, Australiaen
dc.contributor.institutionGeological Survey of Denmark and Greenland, Copenhagen, Denmarken
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorMcCabe, Matthewen
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