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• W4322009853 abstract "Accurately and efficiently estimating parameters for spatially distributed environmental models is impossible without proper regularization of the parameter space. The Multiscale Parameter Regionalization (MPR, Samaniego et al. 2010) makes use of high-resolution physiographic data (i.e., physiographic data such as soil maps and land cover information) to translate local land surface properties into model parameters. MPR consists of two steps: first, the high-resolution model parameters are derived from physiographic data via transfer functions at the native resolution. Second, the model parameters are upscaled to the target resolution used by the environmental modelling application. MPR has been already successfully applied for the mesoscale hydrologic model (mHM, Samaniego et al. 2010, Kumar et al. 2013). The model agnostic, stand-alone&#160;version&#160;&#160;implementation of MPR (Schweppe et al., 2022) allows applying this technique to any land-surface&#160;model&#160;or hydrological model.In this study, we apply&#160;the&#160;MPR to optimize parameters for the land-surface model ECLand (Boussetta et al. 2021) of the ECMWF Integrated Forecasting System. Calibrating ECLand parameters at individual river basins leads to an improved representation of river discharge, i.e., an improved Kling-Gupta efficiency. In an ongoing effort, we explore model parameters&#160;optimization on multiple basins simultaneously to provide an improved representation of river discharge at a global scale. The calibration locations are chosen to cover different climates, soil, and land characteristics among other features.References:Samaniego L., Kumar, R., and Attinger, S.: &#8220;Multiscale parameter regionalization of a grid-based hydrologic model at the mesoscale&#8221;, Water Resour. Res., 46, 2010.Kumar, R., Samaniego, L., and Attinger, S.: &#8220;Implications of distributed hydrologic model parameterization on water fluxes at multiple scales and locations&#8221;, Water Resources Res, 2013Schweppe, R., Thober, S., M&#252;ller, S., Kelbling, M., Kumar, R., Attinger, S., and Samaniego, L.: MPR 1.0: a stand-alone multiscale parameter regionalization tool for improved parameter estimation of land surface models, Geosci. Model Dev., 15, 859&#8211;882, https://doi.org/10.5194/gmd-15-859-2022, 2022Boussetta S, Balsamo G, Arduini G, Dutra E, McNorton J, Choulga M, Agust&#237;-Panareda A, Beljaars A, Wedi N, Mun&#245;z-Sabater J, de Rosnay P, Sandu I, Hadade I, Carver G, Mazzetti C, Prudhomme C, Yamazaki D, Zsoter E. ECLand: The ECMWF Land Surface Modelling System.&#160;Atmosphere. 2021; 12(6):723.&#160;https://doi.org/10.3390/atmos12060723" @default.
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• W4322009853 date "2023-05-15" @default.
• W4322009853 modified "2023-10-16" @default.
• W4322009853 title "Multi-basin calibration of the ECMWF land-surface model ECLand" @default.
• W4322009853 doi "https://doi.org/10.5194/egusphere-egu23-9526" @default.
• W4322009853 hasPublicationYear "2023" @default.
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