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Accurate and Efficient Numerical Simulation of Land Models Using SUMMA With SUNDIALS

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dc.contributor.authorSpiteri, Raymond John
dc.contributor.authorVan Beusekom, Ashley
dc.contributor.authorKlenk, Kyle
dc.contributor.authorZolfaghari, Reza
dc.contributor.authorTrim, Sean
dc.contributor.authorKnoben, Wouter
dc.contributor.authorIreson, Andrew
dc.contributor.authorClark, Martyn
dc.date.accessioned2025-02-20T21:32:10Z
dc.date.available2025-02-20T21:32:10Z
dc.date.issued2024-11-27
dc.descriptionThe version of record of this article, first published in the Journal of Advances in Modelling Earth Systems, is available online at Publisher’s website: https://doi.org/10.1029/2024MS004256
dc.description.abstractNumerical simulation of land models without error control can be highly inaccurate. We present the incorporation of the Suite of Nonlinear and Differential-Algebraic Equation Solvers (SUNDIALS) package to solve the equations that simulate thermodynamics and hydrologic processes in the Structure for Unifying Multiple Modeling Alternatives (SUMMA) land model. The algorithmic features of SUNDIALS, such as error estimation and adaptive order and step-size control, result in a SUMMA-SUNDIALS model that delivers substantially improved accuracy and relative computational efficiency compared to integration with the previous SUMMA model, which uses the low-order backward Euler method with no rigorous error control. The results are demonstrated through simulations over the North American continent with more than 500,000 spatial elements. Compared to the previous SUMMA model, we find that the simulations produced by the SUMMA-SUNDIALS model are orders of magnitude closer to converged solutions for the same computational cost. Being able to efficiently perform more reliable simulations makes the SUMMA-SUNDIALS model a powerful tool for improving our understanding of the terrestrial component of the Earth System.
dc.description.sponsorshipNSERC, National Oceanic and Atmospheric Administration (NOAA)
dc.description.versionPeer Reviewed
dc.identifier.citationSpiteri RJ, Van Beusekom AE, Klenk K, Zolfaghari R, Trim SJ, Knoben WJ, Ireson AM, Clark MP. Accurate and efficient numerical simulation of land models using SUMMA with SUNDIALS. Journal of Advances in Modeling Earth Systems. 2024 Dec;16(12):e2024MS004256.en
dc.identifier.doi10.1029/2024MS004256
dc.identifier.urihttps://hdl.handle.net/10388/16598
dc.language.isoen
dc.publisherWiley
dc.rightsAttribution-NonCommercial-NoDerivs 2.5 Canadaen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/2.5/ca/
dc.subjectSuite of Nonlinear and Differential‐Algebraic Equation Solvers (SUNDIALS)
dc.subjectStructure for Unifying Multiple Modeling Alterna tives (SUMMA)
dc.subjectSimulation of land models
dc.titleAccurate and Efficient Numerical Simulation of Land Models Using SUMMA With SUNDIALS
dc.typeArticle

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