17 Jul 2023
 | 17 Jul 2023
Status: this preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).

Validation of torus mapping method for dealiasing Doppler weather radar velocities

Peter Smerkol, Vito Švagelj, Anton Zgonc, and Benedikt Strajnar

Abstract. In this paper, the implementation and validation of the torus mapping, a method to dealias radial wind observations by meteorological radars is presented. We apply the procedure to data from the Operational program for exchange of weather radar information (OPERA) over central part of Europe for the whole year 2021. The quality of the resulting radar winds is assessed by a comparison to colocated radiosonde and aircraft observations and also through analysis of first guess departures using a regional numerical weather prediction model. Performance of quality control on dealiased radial wind data is also evaluated. We show that the torus mapping method is a robust procedure on data with a sufficiently low amount of measurement noise. It produces datasets of comparable quality for a wide range of Nyquist velocity values and has potential for operational applications.

Peter Smerkol et al.

Status: open (extended)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-1182', Anonymous Referee #1, 03 Aug 2023 reply
    • AC1: 'Reply on RC1', Peter Smerkol, 07 Sep 2023 reply

Peter Smerkol et al.

Data sets

HOOF - tool for homogenizing, dealiasing and superobing OPERA radar files in HDF5 format Peter Smerkol, Benedikt Strajnar, Vito Švagelj, and Anton Zgonc

Peter Smerkol et al.


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Short summary
Meteorological radars measure precipitation and radial winds, but a trade-off exists between the coverage and the Nyquist interval where wind is unambiguously determined. The goal of this paper is to extend the usability of wind measurements using the torus mapping dealiasing algorithm. Validation against radiosonde and aircraft observations, and short-range model forecasts shows a stable performance and good quality of resulting winds, suggesting implementation at the European scale.