Articles | Volume 25, issue 7
https://doi.org/10.5194/hess-25-4061-2021
https://doi.org/10.5194/hess-25-4061-2021
Research article
 | 
13 Jul 2021
Research article |  | 13 Jul 2021

A climatological benchmark for operational radar rainfall bias reduction

Ruben Imhoff, Claudia Brauer, Klaas-Jan van Heeringen, Hidde Leijnse, Aart Overeem, Albrecht Weerts, and Remko Uijlenhoet

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Cited articles

Anagnostou, M. N., Kalogiros, J., Anagnostou, E. N., Tarolli, M., Papadopoulos, A., and Borga, M.: Performance evaluation of high-resolution rainfall estimation by X-band dual-polarization radar for flash flood applications in mountainous basins, J. Hydrol., 394, 4–16, https://doi.org/10.1016/j.jhydrol.2010.06.026, 2010. a
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Barnes, S. L.: A technique for maximizing details in numerical weather map analysis, J. Appl. Meteorol., 3, 396–409, 1964. a
Beekhuis, H. and Holleman, I.: From pulse to product, highlights of the digital-IF upgrade of the Dutch national radar network, in: Proceedings of the Fifth European Conference on Radar in Meteorology and Hydrology (ERAD 2008), Helsinki, Finland, available at: https://cdn.knmi.nl/system/data_center_publications/files/000/068/061/original/erad2008drup_0120.pdf?1495621011 (last access: 3 June 2021), 2008. a
Beekhuis, H. and Mathijssen, T.: From pulse to product, Highlights of the upgrade project of the Dutch national weather radar network, in: 10th European Conference on Radar in Meteorology and Hydrology (ERAD 2018): 1–6 July 2018, Ede-Wageningen, The Netherlands, edited by: de Vos, L., Leijnse, H., and Uijlenhoet, R., Wageningen University and Research, Wageningen, the Netherlands, 960–965, https://doi.org/10.18174/454537, 2018. a
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Significant biases in real-time radar rainfall products limit the use for hydrometeorological forecasting. We introduce CARROTS (Climatology-based Adjustments for Radar Rainfall in an OperaTional Setting), a set of fixed bias reduction factors to correct radar rainfall products and to benchmark other correction algorithms. When tested for 12 Dutch basins, estimated rainfall and simulated discharges with CARROTS generally outperform those using the operational mean field bias adjustments.