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. © 2014 IAHS Press.
B. C. Seo et al., "Four-dimensional Reflectivity Data Comparison Between Two Ground-based Radars: Methodology And Statistical Analysis," Hydrological Sciences Journal, vol. 59, no. 7, pp. 1320 - 1334, Taylor and Francis Group; Taylor and Francis, Jan 2014.
The definitive version is available at https://doi.org/10.1080/02626667.2013.839872
Civil, Architectural and Environmental Engineering
Keywords and Phrases
radar calibration bias; radar reflectivity; radar-rainfall
International Standard Serial Number (ISSN)
Article - Journal
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01 Jan 2014