气候变化领域集成服务门户(CCPortal): Two Layers of Melting Ice Particles Within a Single Radar Bright Band: Interpretation and Implications

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DOI	10.1029/2020GL087499
	Two Layers of Melting Ice Particles Within a Single Radar Bright Band: Interpretation and Implications
	Li H.; Moisseev D.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:13
英文摘要	Dual-frequency dual-polarization radar observations of the melting of two ice populations in a stratiform rainfall event are presented. The observed phenomenon occurs as a two-layer linear depolarization ratio (LDR) signature in a single radar bright band. Doppler spectra observations show that the upper LDR layer is caused by the melting of ice needles, potentially generated by the rime-splintering process, while the lower one is mainly due to the melting of background ice particles formed at the cloud top. The melting signal of small needles acts as a unique benchmark for detecting the onset of melting and is used to verify the current methods for the identification of melting layer boundaries. The radar-derived characteristics of the melting layer are found to be dependent on the radar variable and frequency used. The implications of the presented findings for radar-based studies of precipitation properties in and above the melting layer are also discussed. ©2020. The Authors.
英文关键词	Ice; Needles; Radar; Doppler spectra; Dual frequency; Dual polarization radars; Linear depolarization ratios; Melting layers; Precipitation properties; Radar based studies; Radar bright band; Melting; benchmarking; data interpretation; detection method; Doppler radar; frequency analysis; melting; observational method; particle size; polarization; precipitation (climatology)
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170189
作者单位	Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland; Finnish Meteorological Institute, Helsinki, Finland
推荐引用方式 GB/T 7714	Li H.,Moisseev D.. Two Layers of Melting Ice Particles Within a Single Radar Bright Band: Interpretation and Implications[J],2020,47(13).
APA	Li H.,&Moisseev D..(2020).Two Layers of Melting Ice Particles Within a Single Radar Bright Band: Interpretation and Implications.Geophysical Research Letters,47(13).
MLA	Li H.,et al."Two Layers of Melting Ice Particles Within a Single Radar Bright Band: Interpretation and Implications".Geophysical Research Letters 47.13(2020).