Comparaison de données de réflectivité radar 4D issues de deux radars au sol: Méthodologie et analyse statistique

Translated title of the contribution: Four-dimensional reflectivity data comparison between two ground-based radars: Methodology and statistical analysis

Bong Chul Seo, Witold F. Krajewski, James A. Smith

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

A methodology is proposed to compare radar reflectivity data obtained from two partially overlapping ground-based radars in order to explain relative differences in radar-rainfall products and establish sound merging procedures for multi-radar observing networks. To identify radar calibration differences, radar reflectivity is compared for well-matched radar sampling volumes viewing common meteorological targets. Temporal separation and three-dimensional matching of two different sampling volumes were considered based on the original polar coordinates of radar observation. Since the proposed method assumes radar beam propagation under standard atmospheric conditions, anomalous propagation cases were eliminated from the analysis. The reflectivity comparison results show systematic differences over time, but the variability of these differences is surprisingly large due to the sensitive nature of the radar reflectivity measurement.

Translated title of the contributionFour-dimensional reflectivity data comparison between two ground-based radars: Methodology and statistical analysis
Original languageFrench
Pages (from-to)1320-1334
Number of pages15
JournalHydrological Sciences Journal
Volume59
Issue number7
DOIs
StatePublished - Jul 2014

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

Keywords

  • radar calibration bias
  • radar reflectivity
  • radar-rainfall

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