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A framework for interpreting climate model outputs


  • Nadja A. Leith
  • Richard E. Chandler


Projections of future climate are often based on deterministic models of the Earth's atmosphere and oceans. However, these projections can vary widely between models, with differences becoming more pronounced at the relatively fine spatial and temporal scales that are relevant in many applications. We suggest that the resulting uncertainty can be handled in a logically coherent and interpretable way by using a hierarchical statistical model, implemented in a Bayesian framework. Model fitting using Markov chain Monte Carlo techniques is feasible but moderately time consuming; the computational efficiency can, however, be improved dramatically by substituting maximum likelihood estimates for the original data. The work was motivated by the need for future precipitation scenarios in the UK, in applications such as flood risk assessment and water resource management. We illustrate the methodology by considering the generation of multivariate time series of atmospheric variables, that can be used to drive stochastic simulations of high resolution precipitation for risk assessment purposes. Copyright (c) 2010 Royal Statistical Society.

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  • Nadja A. Leith & Richard E. Chandler, 2010. "A framework for interpreting climate model outputs," Journal of the Royal Statistical Society Series C, Royal Statistical Society, vol. 59(2), pages 279-296.
  • Handle: RePEc:bla:jorssc:v:59:y:2010:i:2:p:279-296

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    References listed on IDEAS

    1. Claudia Tebaldi & Bruno Sansó, 2009. "Joint projections of temperature and precipitation change from multiple climate models: a hierarchical Bayesian approach," Journal of the Royal Statistical Society Series A, Royal Statistical Society, vol. 172(1), pages 83-106.
    2. John C. Liechty, 2004. "Bayesian correlation estimation," Biometrika, Biometrika Trust, vol. 91(1), pages 1-14, March.
    3. Stefano F. Tonellato, 2001. "A multivariate time series model for the analysis and prediction of carbon monoxide atmospheric concentrations," Journal of the Royal Statistical Society Series C, Royal Statistical Society, vol. 50(2), pages 187-200.
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    Cited by:

    1. Álvaro Sordo-Ward & Isabel Granados & Francisco Martín-Carrasco & Luis Garrote, 2016. "Impact of Hydrological Uncertainty on Water Management Decisions," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 30(14), pages 5535-5551, November.
    2. Jianting Zhu & William Forsee & Rina Schumer & Mahesh Gautam, 2013. "Future projections and uncertainty assessment of extreme rainfall intensity in the United States from an ensemble of climate models," Climatic Change, Springer, vol. 118(2), pages 469-485, May.

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