Optimisation of integrated earth system model components using grid-enabled data management and computation
Price, A.R., Xue, G., Yool, A., Lunt, D.J., Valdes, P.J., Lenton, T.M., Wason, J.L., Pound, G.E., Cox, S.J. and GENIE team, The (2007) Optimisation of integrated earth system model components using grid-enabled data management and computation. Concurrency and Computation: Practice and Experience, 19, (2), 153-165. (doi:10.1002/cpe.1046).
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In this paper, we present the Grid enabled data management system that has been deployed for the GENIE Earth System Modeling project. The database system is an augmented version of the Geodise Database Toolbox and provides a repository for scripts, binaries and output data in the GENIE framework. By exploiting functionality available in the Geodise toolboxes we demonstrate how the database can be employed to tune parameters of coupled GENIE Earth System Model components to improve their match with observational data. A Matlab client provides a common environment for the project Virtual Organization and allows the scripting of bespoke tuning studies which can exploit multiple heterogeneous computational resources. We present the results of a number of tuning exercises performed on GENIE model components using multi-dimensional optimisation methods. In particular, we find that it is
possible to successfully tune models with up to 30 free parameters using Kriging and Genetic Algorithm methods.
|Keywords:||optimisation, grid, data management, earth system model, kriging, genetic algorithm|
|Subjects:||G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography
Q Science > QA Mathematics > QA76 Computer software
|Divisions:||University Structure - Pre August 2011 > School of Engineering Sciences
University Structure - Pre August 2011 > School of Ocean & Earth Science (SOC/SOES)
|Date Deposited:||29 Mar 2006|
|Last Modified:||27 Mar 2014 18:12|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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