DOI: 10.1002/2015GL067618
论文题名: First observations of triple-frequency radar Doppler spectra in snowfall: Interpretation and applications
作者: Kneifel S. ; Kollias P. ; Battaglia A. ; Leinonen J. ; Maahn M. ; Kalesse H. ; Tridon F.
刊名: Geophysical Research Letters
ISSN: 0094-9319
EISSN: 1944-9050
出版年: 2016
卷: 43, 期: 5 起始页码: 2225
结束页码: 2233
语种: 英语
英文关键词: radar Doppler spectrum
; snow particle scattering
; triple-frequency radar
Scopus关键词: Doppler effect
; Doppler radar
; Particle size
; Particle size analysis
; Precipitation (meteorology)
; Radar
; Rain
; Characteristic curve
; Doppler spectra
; Information contents
; Multi frequency
; Precipitation microphysics
; Scattering model
; Snow particles
; Triple frequency
; Snow
; cloud
; data set
; Doppler radar
; frequency analysis
; model validation
; particle size
; scattering
; size distribution
; snow
英文摘要: The potential of multifrequency Doppler spectra to constrain precipitation microphysics has so far only been exploited for dual-frequency spectra in rain. In this study, we extend the dual-frequency concept to triple-frequency Doppler radar spectra obtained during a snowfall event which included rimed and unrimed snow aggregates. A large selection of spectra obtained from low-turbulence regions within the cloud reveals distinctly different signatures of the derived dual spectral ratios. Due to the third frequency, a characteristic curve can be derived which is almost independent of the underlying particle size distribution and velocity-size relation. This approach provides new opportunities for validating existing and future snow scattering models and reveals how the information content of triple-frequency radar data sets can be further exploited for snowfall studies. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977845767&doi=10.1002%2f2015GL067618&partnerID=40&md5=98b8efa339feaf27a77f46a867558621
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10282
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Institute for Geophysics and Meteorology, University of Cologne, Cologne, Germany
Recommended Citation:
Kneifel S.,Kollias P.,Battaglia A.,et al. First observations of triple-frequency radar Doppler spectra in snowfall: Interpretation and applications[J]. Geophysical Research Letters,2016-01-01,43(5).