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Download or read book Global Sensitivity and Uncertainty Analysis of Spatially Distributed Watershed Models written by Zuzanna B. Zajac and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The relationship between model uncertainty and alternative spatial data resolutions was studied to provide an illustration of how the procedure may be applied 16 for more informed decisions regarding planning of data collection campaigns. The results corroborate a proposed hypothetical nonlinear, negative relationship between model uncertainty and source data density. The inflection point in the curve, representing the optimal data requirements for the application, is identified for the data density between 1/4 and 1/8 of original data density. It is postulated that the inflection point is related to the characteristics of the spatial dataset (variogram) and the aggregation technique (model grid size). The framework proposed in this dissertation could be applied to any spatially distributed model and input, as it is independent from model assumptions.