<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Accurate estimation of precipitation in mountain catchments is challenging due to its high spatial variability and lack of measured ground data. Weather radar can help to provide precipitation estimates in such conditions. This study investigates the differences between measured and radar-estimated daily precipitation in the mountain catchment of the Jalovecký Creek (area 22 km<sup>2</sup>, 6 rain gauges at altitudes 815–1900 m a.s.l.) in years 2017–2020. Despite good correlations between measured and radar-based precipitation at individual sites (correlation coefficients 0.68–0.90), the radar-estimated precipitation was mostly substantially smaller than measured precipitation. The underestimation was smaller at lower altitude (on average by –4% to –17% at 815 m a.s.l.) than at higher altitudes (–35% to –59% at 1400–1900 m a.s.l.). Unlike measured data, the radar-estimated precipitation did not show the differences in precipitation amounts at lower and higher altitudes (altitudinal differences). The differences between the measured and radar-estimated precipitation were not related to synoptic weather situations. The obtained results can be useful in preparation of more accurate precipitation estimates for the small mountain catchments.</p>
</abstract>

Accurate estimation of precipitation in mountain catchments is challenging due to its high spatial variability and lack of measured ground data. Weather radar can help to provide precipitation estimates in such conditions. This study investigates the differences between measured and radar-estimated daily precipitation in the mountain catchment of the Jalovecký Creek (area 22 km2, 6 rain gauges at altitudes 815–1900 m a.s.l.) in years 2017–2020. Despite good correlations between measured and radar-based precipitation at individual sites (correlation coefficients 0.68–0.90), the radar-estimated precipitation was mostly substantially smaller than measured precipitation. The underestimation was smaller at lower altitude (on average by –4% to –17% at 815 m a.s.l.) than at higher altitudes (–35% to –59% at 1400–1900 m a.s.l.). Unlike measured data, the radar-estimated precipitation did not show the differences in precipitation amounts at lower and higher altitudes (altitudinal differences). The differences between the measured and radar-estimated precipitation were not related to synoptic weather situations. The obtained results can be useful in preparation of more accurate precipitation estimates for the small mountain catchments.

Accuracy of radar-estimated precipitation in a mountain catchment in Slovakia

Department of Astronomy, Physics of the Earth, and Meteorology

Journal of Hydrology and Hydromechanics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Accuracy of radar-estimated precipitation in a mountain catchment in Slovakia"}

Accurate estimation of precipitation in mountain catchments is challenging due to its high spatial variability and lack of measured ground data. Weather radar...

Accuracy of radar-estimated precipitation in a mountain catchment in Slovakia

Published Online: Feb 04, 2023

Page range: 111 - 122

Received: Aug 05, 2022

Accepted: Oct 27, 2022

DOI: https://doi.org/10.2478/johh-2022-0037

Keywords
Radar-estimated precipitation, Precipitation estimates, Daily precipitation, Synoptic weather situations

© 2022 Patrik Sleziak et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Accuracy of radar-estimated precipitation in a mountain catchment in Slovakia

Published Online: Feb 04, 2023

Page range: 111 - 122

Received: Aug 05, 2022

Accepted: Oct 27, 2022

DOI: https://doi.org/10.2478/johh-2022-0037

KeywordsRadar-estimated precipitation, Precipitation estimates, Daily precipitation, Synoptic weather situations

© 2022 Patrik Sleziak et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Radar-estimated precipitation, Precipitation estimates, Daily precipitation, Synoptic weather situations