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

IF 4.5 2区 地球科学 Q1 METEOROLOGY & ATMOSPHERIC SCIENCES
Eleni Loulli , Silas Michaelides , Johannes Bühl , Athanasios Loukas , Diofantos G. Hadjimitsis
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引用次数: 0

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.
本研究试图利用一种约束衰减校正方法,对塞浦路斯两部 X 波段雷达的雷达反射系数进行衰减校正。这项研究是在以下假设下进行的:一方面,每个地面雷达测量的反射率与全球降水测量(GPM)任务测量的反射率之差等于路径综合衰减(PIA)。这是因为迄今为止只使用了水平极化的反射率数据。以 GPM DPR 数据为参考,对用于约束校正的各种线性系数参数组合进行了经验测试。结果表明,没有一个单一的参数组合能够始终有效,并强调了针对具体事件和雷达进行衰减校正的必要性。
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来源期刊
Atmospheric Research
Atmospheric Research 地学-气象与大气科学
CiteScore
9.40
自引率
10.90%
发文量
460
审稿时长
47 days
期刊介绍: The journal publishes scientific papers (research papers, review articles, letters and notes) dealing with the part of the atmosphere where meteorological events occur. Attention is given to all processes extending from the earth surface to the tropopause, but special emphasis continues to be devoted to the physics of clouds, mesoscale meteorology and air pollution, i.e. atmospheric aerosols; microphysical processes; cloud dynamics and thermodynamics; numerical simulation, climatology, climate change and weather modification.
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