Melting Layer Attenuation at Ka- and W-Bands as Derived From Multifrequency Radar Doppler Spectra Observations

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http://hdl.handle.net/10138/306283

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Li , H & Moisseev , D 2019 , ' Melting Layer Attenuation at Ka- and W-Bands as Derived From Multifrequency Radar Doppler Spectra Observations ' , Journal of Geophysical Research : Atmospheres , vol. 124 , no. 16 , pp. 9520-9533 . https://doi.org/10.1029/2019JD030316

Title: Melting Layer Attenuation at Ka- and W-Bands as Derived From Multifrequency Radar Doppler Spectra Observations
Author: Li, Haoran; Moisseev, Dmitri
Contributor: University of Helsinki, INAR Physics
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
Date: 2019-08-27
Language: eng
Number of pages: 14
Belongs to series: Journal of Geophysical Research : Atmospheres
ISSN: 2169-897X
URI: http://hdl.handle.net/10138/306283
Abstract: Abstract The melting layer of precipitation has a major impact on remote sensing and telecommunications. However, there is a shortage of observational studies to validate and constrain the melting layer models especially for high-frequency radar bands. In this paper, we report how multifrequency radar Doppler spectra can be used to retrieve the melting layer attenuation at Ka- and W-bands. The presented analysis is based on identifying Rayleigh scattering regions in radar Doppler spectra measurements where dual-wavelength spectral ratios can be related to differential attenuation. We show that the estimated attenuation at Ka- and W-bands agrees reasonably well with previously reported studies, but there are indications of differences at higher rain rates. We advocate that this technique can be applied to long-term observations to advance our knowledge of the melting process. The parameterizations of melting layer attenuation as a function of rain rate and radar reflectivity are also presented.
Subject: Ka-/W-band melting layer attenuation
Multi-frequency radar Doppler spectra
Rayleigh regime
115 Astronomy, Space science
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