DOI: 10.1002/2013GL057454
论文题名: Disentangling Mie and attenuation effects in rain using a Ka-W dual-wavelength Doppler spectral ratio technique
作者: Tridon F. ; Battaglia A. ; Kollias P.
刊名: Geophysical Research Letters
ISSN: 0094-8437
EISSN: 1944-8168
出版年: 2013
卷: 40, 期: 20 起始页码: 5548
结束页码: 5552
语种: 英语
英文关键词: Doppler spectral ratio
; dual-wavelength radar
; precipitation
Scopus关键词: Attenuation effect
; Differential attenuation
; Doppler velocity
; Dual-wavelength
; Novel techniques
; Precipitating snow
; Retrieval techniques
; Spectral ratios
; Precipitation (chemical)
; Radar
; Rain
; Rayleigh scattering
; Radar measurement
; Doppler effect
; Mie theory
; precipitation (climatology)
; rainfall
; Rayleigh number
; wavelength
英文摘要: A novel technique that enables to disentangle Mie and attenuation effects in coincident, beam-matched Ka- and W-band radar observations is presented here. The ratio of the measured radar Doppler spectra at the two frequencies is estimated, and the Doppler velocity regime that corresponds to Rayleigh scatterers is determined. The range variation of the Rayleigh regime "plateau" is directly linked to the differential attenuation between the two wavelengths and does represent the attenuation component of the dual-wavelength ratio. The retrieval technique is applied to a light stratiform rain event and provides plausible results. The proposed Doppler spectral ratio methodology has potential for applications in precipitating snow, liquid and ice clouds and can be extended to other wavelength pairs. Key Points Attenuation and Mie effects ambiguity in dual-wavelength radar techniques Dual-wavelength radar Doppler spectral ratio (DSR) has a quasi-universal shape DSR can help to disentangle the two components of the dual-wavelength ratio ©2013 The Authors. Geophysical Research Letters published by Wiley on behalf of the American Geophysical Union. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84886067431&doi=10.1002%2f2013GL057454&partnerID=40&md5=81b92266ed581a8c6c012062e2112d83
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5701
Appears in Collections: 气候减缓与适应
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作者单位: Earth Observation Sciences, Department of Physics and Astronomy, University of Leicester, University road, Leicester, LE1 7RH, United Kingdom
Recommended Citation:
Tridon F.,Battaglia A.,Kollias P.. Disentangling Mie and attenuation effects in rain using a Ka-W dual-wavelength Doppler spectral ratio technique[J]. Geophysical Research Letters,2013-01-01,40(20).