Toward improved calibration of hydrologic models: Multiple and noncommensurable measures of information

Hoshin Vijai Gupta, Soroosh Sorooshian, Patrice Ogou Yapo

Research output: Contribution to journalArticle

935 Scopus citations

Abstract

Several contributions to the hydrological literature have brought into question the continued usefulness of the classical paradigm for hydrologic model calibration. With the growing popularity of sophisticated 'physically based' watershed models (e.g., landsurface hydrology and hydrochemical models) the complexity of the calibration problem has been multiplied many fold. We disagree with the seemingly widespread conviction that the model calibration problem will simply disappear with the availability of more and better field measurements. This paper suggests that the emergence of a new and more powerful model calibration paradigm must include recognition of the inherent multiobjective nature of the problem and must explicitly recognize the role of model error. The results of our preliminary studies are presented. Through an illustrative case study we show that the multiobjective approach is not only practical and relatively simple to implement but can also provide useful information about the limitations of a model.

Original languageEnglish (US)
Pages (from-to)751-763
Number of pages13
JournalWater Resources Research
Volume34
Issue number4
DOIs
StatePublished - Apr 1998

ASJC Scopus subject areas

  • Water Science and Technology

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