HR: 1340h
AN: H13B-0403    [Abstracts]
TI: The use of Bounded Intervals for Data Representation in the Evaluation of Uncertainties in Rainfall-Runoff Modelling
AU: Smith, P
EM: p.j.smith@lancs.ac.uk
AF: Lancaster University, Dept. of Environmental Science I.E.N.S. Lancaster University Bailrigg, Lancaster, LA1 4YQ United Kingdom
AU: * Beven, K
EM: k.beven@lancs.ac.uk
AF: Lancaster University, Dept. of Environmental Science I.E.N.S. Lancaster University Bailrigg, Lancaster, LA1 4YQ United Kingdom
AU: Freer, J
EM: j.freer@lancs.ac.uk
AF: Lancaster University, Dept. of Environmental Science I.E.N.S. Lancaster University Bailrigg, Lancaster, LA1 4YQ United Kingdom
AU: Peters, N E
EM: nepeters@usgs.gov
AF: US Geological Survey, 3039 Amwiler Rd. Suite 130, Atlanta, GA 30360-2824 United States
AB: The evaluation of parameter or model structural uncertainty when considering modelling the Rainfall-Runoff process usually requires the consideration of at least two observational series, rainfall and stage. As well as being incommensurate with most rainfall-runoff models the observations are often made on a different spatial and/or temporal scale. Given this any `measure of association' between the observed data and data series used by the model is a representation of more than simply the observational uncertainty, but also any mapping resolving scale or commensurability differences. The realisation that the `measure of association' also represents a mapping can lead to an ill posed problem since the measure may be inseparable from the model for whose structural inadequacy it compensates. One method of achieving this separation is to select a priori a set of acceptable bounds for the `measures of association'. The work presented here considers a derivation of bounds for the `measures of association' for the Panola Mountain Research Watershed with reference to a simple hydraulic model. This model is then applied using a novel computational algorithm based upon particle filters to evaluate its parameter uncertainty.
DE: 1899 General or miscellaneous
DE: 1860 Runoff and streamflow
DE: 1894 Instruments and techniques
SC: Hydrology [H]
MN: 2004 AGU Fall Meeting