Motivation and Overview of Hydrological Ensemble Post-processing

Thomas M. Hopson, Andrew W. Wood, Albrecht H. Weerts

Research output: Chapter in Book/Report/Conference proceedingChapter


In this introduction to this chapter on hydrologic post-processing, we discuss the different but complementary directives that the “art” of post-processing must satisfy: the particular directive defined by specific applications and user needs; versus the general directive of making any ensemble member indistinguishable from the observations. Also discussed are the features of hydrologic post-processing that are similar and separate from meteorological post-processing, providing a tie-in to early chapters in this handbook. We also provide an overview of the different aspects the practitioner should keep in mind when developing and implementing algorithms to adequately “correct and calibrate” ensemble forecasts: when forecast uncertainties should be characterized separately versus maintaining a “lumped” approach; additional aspects of hydrological ensembles that need to be maintained to satisfy additional user requirements, such as temporal covariability in the ensemble time series, an overview of the different post-processing approaches being used in practice and in the literature, and concluding with a brief overview of more specific requirements and challenges implicit in the “art” of post-processing.
Original languageEnglish
Title of host publicationHandbook of Hydrometeorological Ensemble Forecasting
EditorsQingyun Duan, Florian Pappenberger, Jutta Thielen, Andy Wood, Hannah L. Cloke, John C. Schaake
Place of PublicationBerlin
PublisherSpringer Verlag
Number of pages11
ISBN (Print)9783642404573
Publication statusPublished - 21 Aug 2018

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    Hopson, T. M., Wood, A. W., & Weerts, A. H. (2018). Motivation and Overview of Hydrological Ensemble Post-processing. In Q. Duan, F. Pappenberger, J. Thielen, A. Wood, H. L. Cloke, & J. C. Schaake (Eds.), Handbook of Hydrometeorological Ensemble Forecasting [Chapter 36-2] Springer Verlag.