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Article

Comparative Analysis of Rain Gauge and Radar Precipitation Estimates towards Rainfall-Runoff Modelling in a Peri-Urban Basin in Attica, Greece

Department of Water Resources and Environmental Engineering, School of Civil Engineering, National Technical University of Athens, 5 Iroon Polytechniou, 157 80 Athens, Greece
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Academic Editor: Andrea Petroselli
Hydrology 2021, 8(1), 29; https://doi.org/10.3390/hydrology8010029
Received: 31 December 2020 / Revised: 1 February 2021 / Accepted: 7 February 2021 / Published: 10 February 2021
In this research work, an analysis is conducted concerning the impact on rainfall-runoff simulations of utilizing rain gauge precipitation measurements against weather radar quantitative precipitation estimates. The study area is the Sarantapotamos river basin, a peri-urban basin located in the greater area of Athens, and measurements from a newly installed X-Band weather radar system, referred to as rainscanner, along with ground rain gauge stations were used. Rainscanner, in contrast to rain gauges, is able to provide with higher resolution surface precipitation datasets, but due to signal errors, uncertainty is involved, and thus proper calibration and evaluation of these estimates must be first performed. In this context, this research work evaluates the impact of adopting different precipitation datasets and interpolation methods for generating runoff, through the use of a lumped based rainfall-runoff model. Initially, the analysis focuses on the correlation between the rain gauge and the rainscanner estimations for each station, as well as for the calculated mean areal precipitation. The results of the rainfall-runoff simulations show that even though a different spatial and temporal variability of the rainfall field is calculated through the two datasets, in a lumped-based scheme, the most important factor that dictates the runoff generation is the amount of total precipitation. View Full-Text
Keywords: rain gauge; weather radar; rainscanner; mean areal precipitation; Sarantapotamos rain gauge; weather radar; rainscanner; mean areal precipitation; Sarantapotamos
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MDPI and ACS Style

Bournas, A.; Baltas, E. Comparative Analysis of Rain Gauge and Radar Precipitation Estimates towards Rainfall-Runoff Modelling in a Peri-Urban Basin in Attica, Greece. Hydrology 2021, 8, 29. https://doi.org/10.3390/hydrology8010029

AMA Style

Bournas A, Baltas E. Comparative Analysis of Rain Gauge and Radar Precipitation Estimates towards Rainfall-Runoff Modelling in a Peri-Urban Basin in Attica, Greece. Hydrology. 2021; 8(1):29. https://doi.org/10.3390/hydrology8010029

Chicago/Turabian Style

Bournas, Apollon; Baltas, Evangelos. 2021. "Comparative Analysis of Rain Gauge and Radar Precipitation Estimates towards Rainfall-Runoff Modelling in a Peri-Urban Basin in Attica, Greece" Hydrology 8, no. 1: 29. https://doi.org/10.3390/hydrology8010029

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