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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00005086naa a2200457 4500
001oai:DiVA.org:uu-158117
003SwePub
008110831s2011 | |||||||||||000 ||eng|
009oai:DiVA.org:su-66653
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1581172 URI
0247 a https://doi.org/10.5194/hess-15-2205-20112 DOI
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-666532 URI
040 a (SwePub)uud (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Westerberg, Idau Uppsala universitet,Luft-, vatten- och landskapslära4 aut0 (Swepub:uu)idawe500
2451 0a Calibration of hydrological models using flow-duration curves
264 c 2011-07-14
264 1b Copernicus GmbH,c 2011
338 a print2 rdacarrier
500 a authorCount :8
520 a The degree of belief we have in predictions from hydrologic models will normally depend on how well they can reproduce observations. Calibrations with traditional performance measures, such as the Nash-Sutcliffe model efficiency, are challenged by problems including: (1) uncertain discharge data, (2) variable sensitivity of different performance measures to different flow magnitudes, (3) influence of unknown input/output errors and (4) inability to evaluate model performance when observation time periods for discharge and model input data do not overlap. This paper explores a calibration method using flow-duration curves (FDCs) to address these problems. The method focuses on reproducing the observed discharge frequency distribution rather than the exact hydrograph. It consists of applying limits of acceptability for selected evaluation points (EPs) on the observed uncertain FDC in the extended GLUE approach. Two ways of selecting the EPs were tested - based on equal intervals of discharge and of volume of water. The method was tested and compared to a calibration using the traditional model efficiency for the daily four-parameter WAS-MOD model in the Paso La Ceiba catchment in Honduras and for Dynamic TOPMODEL evaluated at an hourly time scale for the Brue catchment in Great Britain. The volume method of selecting EPs gave the best results in both catchments with better calibrated slow flow, recession and evaporation than the other criteria. Observed and simulated time series of uncertain discharges agreed better for this method both in calibration and prediction in both catchments. An advantage with the method is that the rejection criterion is based on an estimation of the uncertainty in discharge data and that the EPs of the FDC can be chosen to reflect the aims of the modelling application, e. g. using more/less EPs at high/low flows. While the method appears less sensitive to epistemic input/output errors than previous use of limits of acceptability applied directly to the time series of discharge, it still requires a reasonable representation of the distribution of inputs. Additional constraints might therefore be required in catchments subject to snow and where peak-flow timing at sub-daily time scales is of high importance. The results suggest that the calibration method can be useful when observation time periods for discharge and model input data do not overlap. The method could also be suitable for calibration to regional FDCs while taking uncertainties in the hydrological model and data into account.
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskap0 (SwePub)1052 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciences0 (SwePub)1052 hsv//eng
653 a NATURAL SCIENCES
653 a NATURVETENSKAP
7001 a Guerrero, José-Luisu Uppsala universitet,Luft-, vatten- och landskapslära4 aut0 (Swepub:uu)josca362
7001 a Younger, P. M.u Lancaster Environment Centre, Lancaster University, Lancaster, UK4 aut
7001 a Beven, Keithu Uppsala universitet,Luft-, vatten- och landskapslära4 aut0 (Swepub:uu)keibe286
7001 a Seibert, Janu Stockholms universitet,Institutionen för naturgeografi och kvartärgeologi (INK),Department of Physical Geography and Quartenary Geology, Stockholm University, Stockholm, Sweden4 aut0 (Swepub:su)jseib
7001 a Halldin, Svenu Uppsala universitet,Luft-, vatten- och landskapslära4 aut0 (Swepub:uu)svenhall
7001 a Freer, J. E.u School of Geographical Sciences, University of Bristol, University Road, Bristol, BS8 1SS, UK4 aut
7001 a Xu, C. -Yu Department of Geosciences, University of Oslo, Norway4 aut
7102 a Uppsala universitetb Luft-, vatten- och landskapslära4 org
7730 t Hydrology and Earth System Sciencesd : Copernicus GmbHg 15:7, s. 2205-2227q 15:7<2205-2227x 1027-5606x 1607-7938
8564 u https://www.hydrol-earth-syst-sci.net/15/2205/2011/hess-15-2205-2011.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-158117
8564 8u https://doi.org/10.5194/hess-15-2205-2011
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-66653

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