大气科学2025，Vol.49Issue(5)：1229-1242,14.DOI:10.3878/j.issn.1006-9895.2407.24038
三频雷达遥感云参数能力的进一步模拟与分析
Further Simulation and Analysis of Triple-Frequency Radar in Detecting Cloud
摘要
Abstract
Based on prior research,this paper carries out the simulation of three typical short-wavelength radar detections(i.e.,X-band:9.5 GHz,3 cm;Ka-band:35 GHz,8 mm;and W-band:94 GHz,3 mm)for nonprecipitation cloud particles,particularly ice crystals.It further compares and analyzes the radar reflectivity values stemming from variations in the particles'physical attributes.In addition,this paper explores the feasibility of employing these three radar wavelengths to discern the morphology of ice crystals.The results show that,despite the W-band's short wavelength and heightened sensitivity,the backscattering characteristics of ice crystals exhibit a considerably more intricate pattern than those observed in the X-band and Ka-band.Variations in the incident angle,particle morphology,and particle size elicit dramatic and complex alterations in backscattering,posing a formidable challenge to traditional inversion methods that rely on statistical or empirical fitting approaches to extract cloud particle microphysical properties.It has also been shown that utilizing the characteristics of the differences between multiwavelength radar observations can help provide microphysical information about cloud particles.For example,in an ice cloud,a pronounced disparity in reflectivity factors between the W-band and either the Ka-band or X-band,particularly when it dips below-3 dB,suggests the likelihood of prolate particle presence.This offers invaluable insights and practical experience for refining and enhancing the accuracy of algorithms designed to invert cloud microphysical features based on triple-frequency radar data.关键词
雷达/微物理/模拟/反演/冰晶Key words
Radar/Microphysics/Simulation/Inversion/Ice crystals分类
大气科学引用本文复制引用
霍娟,乔聪聪,王一楠,韩瑽琤,段民征..三频雷达遥感云参数能力的进一步模拟与分析[J].大气科学,2025,49(5):1229-1242,14.基金项目
国家自然科学基金资助项目42275081 National Natural Science Foundation of China(Grant 42275081) （Grant 42275081）
