The Impact of the Variability of Precipitation and Temperatures on the Efficiency of a Conceptual Rainfall-Runoff Model

Sleziak, Patrik; Szolgay, Ján; Hlavčová, Kamila; Parajka, Juraj

doi:10.1515/sjce-2016-0016

Cited by 16 publications

(7 citation statements)

References 15 publications

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“…That could imply a better snow regime in mountainous areas. However, [46,47] argue that because of the rising air temperature in mountain regions during winter, these trends are instead linked with increasing water discharge from the river basins. That has a paradoxically negative influence on drought regimes in the cold part of the year and early spring.…”

Section: Discussionmentioning

confidence: 99%

Drought in the Upper Hron Region (Slovakia) between the Years 1984–2014

Vido

Nalevanková

2020

Water

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Climate change causes an increase in the frequency and severity of weather extremes. One of the most relevant severe and damaging phenomena in Europe is drought. However, a difference in the spatial frequency of the occurrence and drought trends is evident between southern and northern Europe. Central Europe and particularly the West Carpathian region form a transitional zone, and drought patterns are complicated because of the geomorphologically complicated landscape. Since almost half of the Slovak state territory is represented by such natural landscape, it is necessary to investigate regional drought specifics. Therefore, we decided to analyze drought occurrence and trends using the SPI (Standardised Precipitation Index) and the SPEI (Standardised Precipitation Evapotranspiration Index) at available climatological stations of the Slovak Hydrometeorological Institute (SHMI) in the upper Hron region within the 1984–2014 period. We found that (1) drought incidence decreased with increasing altitude, (2) increasing air temperature increased the difference in drought trends between lowlands and mountains during the studied period, and (3) abrupt changes in time series of drought indices, that could indicate some signals of changing atmospheric circulation patterns, were not revealed. Finally, we constructed a simplified map of drought risk as an explanation resource for local decision-makers.

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Section: Discussionmentioning

confidence: 99%

Drought in the Upper Hron Region (Slovakia) between the Years 1984–2014

Vido

Nalevanková

2020

Water

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“…The parameters of the semidistributed model were considered as lumped in this study. Both versions have extensively been used for solving various hydrological problems (see e.g., Sleziak et al, 2016;Parajka et al, 2007;Viglione et al, 2013). The TUW model consists of three sub-models: the snow sub-model, the soil sub-model, and the runoff formation sub-model.…”

Section: Methodsmentioning

confidence: 99%

“…The calibration of the model was performed on data from 180 catchments, which are distributed over the whole territory of Austria. These data have also been extensively used in previous modeling studies, e.g., by Viglione et al (2013) and Sleziak et al (2016). The catchment areas varied from 14.2 km 2 to 6214 km 2 .…”

Section: Input Datamentioning

confidence: 99%

Comparison of the variability of snow cover parameters of the HBV model using lumped and distributed precipitation inputs and multi-basin calibration

Brziak¹,

Kubáň²,

Kohnová³

et al. 2021

AHS

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Snow cover is a significant source of water supply, mainly in mountainous regions, as snow precipitation fundamentally affects a catchment´s water balance. The correct simulation of the water balance with rainfall-runoff models is therefore important for the effective management of water resources. Three basic factors may affect the efficiency of hydrological models and the quality of the modelled outputs: The spatial representativeness of the input data, the model´s structure, and the uncertainties of the model parameters. A comparison of the variability of snow cover parameters and model efficiency of two versions of the HBV model using spatially lumped and distributed precipitation inputs by a multi-basin calibration exercise was performed in this study. Both the lumped and semi-distributed versions of the HBV model were calibrated for discharges, precipitation, and the air temperature on 180 catchments located all over the territory of Austria using data from the period 1991-2000. The analysis focused on the variability of the parameters controlling the snowmelt and the accumulation of the snow components of the two models. The efficiency of the models based on lumped and spatially distributed inputs was compared. The question as to how the catchment´s mean elevation, and the number of days with an air temperature below zero affects the model´s performance was targeted, too.

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“…The model simulates the catchment-scale water balance at daily time steps, including processes related to snow accumulation and melting, change of moisture in the soil profile, and surface flow in the drainage network. The TUWmodel was validated over 320 catchments in Austria (Parajka et al, 2007) and has subsequently been used in numerous studies (e.g., Ceola et al, 2015;Parajka et al, 2016;Sleziak et al, 2016;Zessner et al, 2017;Melsen et al, 2018;Nijzink et al, 2018;Sleziak et al, 2020;Széles et al, 2020).…”

Section: Hydrological Modelmentioning

confidence: 99%

On the selection of precipitation products for the regionalisation of hydrological model parameters

Baez-Villanueva

Zambrano‐Bigiarini

Mendoza

et al. 2021

Preprint

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Abstract. Over the past years, novel parameter regionalisation techniques have been developed to predict streamflow in data-scarce regions. In this paper, we examined how the choice of gridded daily precipitation (P) products affects individual catchment calibration and verification, as well as the relative performance of three well-known regionalisation techniques (spatial proximity, feature similarity, and parameter regression) over 100 near-natural catchments with diverse hydrological regimes across Chile. We configured and calibrated a conceptual semi-distributed HBV-like hydrological model for each catchment, using four P products (ERA5, MSWEPv2.8, RF-MEPv2, and CR2MET), and two objective functions. The three regionalisation techniques were applied and evaluated for each combination of P product and objective function, using a leave-one-out cross-validation procedure. Despite differences in the spatio-temporal distribution of P quantities, all P products provided good performance during calibration (median KGE's > 0.77), two independent verification periods (median KGE's > 0.70 and 0.61, for near normal and dry conditions, respectively), and regionalisation results (with median KGE's for the best method ranging from 0.56 to 0.63). Our results suggest that model calibration is able to compensate, to some extent, differences between forcing datasets, and that the spatial resolution of P products does not substantially affect the regionalisation performance. Overall, feature similarity provided the best results, followed closely by spatial proximity, while parameter regression performed the worst, thus reinforcing the importance of transferring complete parameter sets to ungauged catchments. Our results suggest that: i) merging P products and ground-based measurements does not necessarily translate into an improved hydrological modelling performance; ii) a P product that provides the best individual model performance during calibration and verification does not necessarily provide the best performance in terms of parameter regionalisation; and iii) the hydrological regime affects the performance of regionalisation methods, with rain-dominated catchments with a snow component performing the best over Chile for spatial proximity and feature similarity.

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The Impact of the Variability of Precipitation and Temperatures on the Efficiency of a Conceptual Rainfall-Runoff Model

Abstract: The main objective of the paper is to understand how the model '

Cited by 16 publications

References 15 publications

Drought in the Upper Hron Region (Slovakia) between the Years 1984–2014

Drought in the Upper Hron Region (Slovakia) between the Years 1984–2014

Comparison of the variability of snow cover parameters of the HBV model using lumped and distributed precipitation inputs and multi-basin calibration

On the selection of precipitation products for the regionalisation of hydrological model parameters

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