Work

Correction of path integrated attenuation using data from two X-band ground-based radars and GPM

Year: 2025

Type: erratum

Abstract: This study attempts to correct the attenuation of the radar reflectivity factor from two X-band radars in Cyprus, using a constrained attenuation correction method. This research was implemented under the assumption that the difference between the reflectivity measured by each of the ground radars, on the one hand, and the reflectivity measured by the Global Precipitation Measurement (GPM) mission, on the other hand, equals the path integrated attenuation (PIA). This is because solely the reflectivity data at horizontal polarization have been used so far. Various parameter combinations of linear coefficients for the constrained correction were tested empirically, using GPM DPR data as a reference. The results showed that no single parameter combination can be consistently effective, and highlighted the need for event- and radar-specific attenuation correction. • The correction of attenuation for the two X-band radars of the Cyprus network is examined. • Parameter combinations of coefficients to constrain the gate-by-gate forward attenuation correction method are evaluated. • GPM DPR Ku-band data are used as a reference. • The mutual correction of two radar systems is investigated. • The results revealed that the attenuation correction should be event- and radar-based.

Source: Atmospheric Research

DOI: 10.1016/j.atmosres.2025.108080

Authors: Eleni Loulli, Silas Michaelides, Johannes Bühl, Athanasios Loukas, Diofantos G. Hadjimitsis

Institutions: Cyprus University of Technology, ERATOSTHENES Centre of Excellence, Leibniz Institute for Tropospheric Research, Harz University of Applied Sciences, Aristotle University of Thessaloniki

Language: English

Topic: Precipitation Measurement and Analysis

Subfield: Atmospheric Science

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,310

Funders: Cyprus University of Technology, Directorate General for European Programmes, Coordination and Development, Horizon 2020