Preprints
https://doi.org/10.5194/amt-2021-324
https://doi.org/10.5194/amt-2021-324

  11 Oct 2021

11 Oct 2021

Review status: this preprint is currently under review for the journal AMT.

Improvement in algorithms for quality control of weather radar data (RADVOL-QC system)

Katarzyna Ośródka and Jan Szturc Katarzyna Ośródka and Jan Szturc
  • Centre of Meteorological Modelling, Institute of Meteorology and Water Management – National Research Institute, PL 01-673 Warszawa, ul. Podleśna 61, Poland

Abstract. Data from weather radars are commonly used in meteorology and hydrology, but they are burdened with serious disturbances, especially due to the appearance of numerous non-meteorological echoes. For this reason, these data are subject to advanced quality control algorithms. The paper presents a significant improvement of the RADVOL-QC system made necessary by the appearance of an increasing number of various disturbances. New algorithms are mainly addressed to the occurrence of clutter caused by wind turbines (DP.TURBINE algorithm) and other terrain obstacles (DP.NMET algorithm), as well as various forms of echoes caused by the interaction of a radar beam with RLAN signals (set of SPIKE algorithms). The individual algorithms are based on the employment of polarimetric data as well as on the geometric analysis of echo patterns. In the paper the algorithms are described along with examples of their performance and an assessment of their effectiveness, and finally examples of the performance of the whole system are discussed.

Katarzyna Ośródka and Jan Szturc

Status: open (until 16 Nov 2021)

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Katarzyna Ośródka and Jan Szturc

Katarzyna Ośródka and Jan Szturc

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Short summary
Weather radar data are used in weather monitoring and forecasting, but they are affected by numerous errors and require advanced corrections. Different systems are designed and implemented to suit specific local conditions, like the RADVOL-QC system. The radar errors are divided into several groups: disturbance by non-meteorological echoes (from the mountains, RLAN signals, wind turbines, etc.), beam blockage, attenuation, etc. Each of them has different properties and is corrected differently.