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Evaluation of a new X-band weather radar for operational use in south Sweden

Author:
  • Hasan Hosseini
  • Hossein Hashemi
  • Ronny Berndtsson
  • Nicholas South
  • Henrik Aspegren
  • Rolf Larsson
  • Jonas Olsson
  • Andreas Persson
  • Lisa Olsson
Publishing year: 2020-02-18
Language: English
Pages: 1623-1635
Publication/Series: Water Science and Technology
Volume: 81
Issue: 8
Document type: Journal article
Publisher: IWA Publishing

Abstract english

The performance of a new type of X-band Weather Radar (WR) for Sweden during a pilot run is studied. Compared to the conventional C-band WRs, the X-band WR covers a smaller area but with a higher spatiotemporal resolution, making it suitable for urban hydrological applications. Rainfall estimations from different elevation angles of the radar (levels) are compared at one-minute and single-event timescales with the observations of several rain gauges at different ranges using hyetographs. In general, the estimations aligned well with observations and the best match appeared for ranges as long as 5–10 km. Seemingly, radar estimations suffered from overshooting of lower lying showers by higher level scans in longer ranges (19–30 km) and from the reflectivity contamination due to moving objects in short ranges (<1 km). Also, the effective range of the radar dropped sharply for the moments when a cloudburst was located over the radar. Although various sources of error could affect the X-band WR rainfall estimates, higher resolution spatiotemporal rainfall monitoring for wider areas will benefit from an integration of data from a network of X-band WRs.

Keywords

  • Remote Sensing

Other

Published
  • ISSN: 0273-1223
Andreas Persson
E-mail: andreas [dot] persson [at] nateko [dot] lu [dot] se

Senior lecturer

Dept of Physical Geography and Ecosystem Science

+46 46 222 42 62

GIS-centrum 103

16

Senior lecturer

Centre for Geographical Information Systems (GIS Centre)

+46 46 222 42 62

16

Teaching staff

Dept of Physical Geography and Ecosystem Science

16

Department of Physical Geography and Ecosystem Science
Lund University
Sölvegatan 12
S-223 62 Lund
Sweden

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