Universität zu Köln

Kneifel, S., Kollias, P., Battaglia, A., Leinonen, J., Maahn, M., Kalesse, H. and Tridon, F. (2016). First observations of triple-frequency radar Doppler spectra in snowfall: Interpretation and applications. Geophys. Res. Lett., 43 (5). S. 2225 - 2234. WASHINGTON: AMER GEOPHYSICAL UNION. ISSN 1944-8007

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Abstract

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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kneifel, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kollias, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Battaglia, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Leinonen, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Maahn, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kalesse, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tridon, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-281227
DOI:	10.1002/2015GL067618
Journal or Publication Title:	Geophys. Res. Lett.
Volume:	43
Number:	5
Page Range:	S. 2225 - 2234
Date:	2016
Publisher:	AMER GEOPHYSICAL UNION
Place of Publication:	WASHINGTON
ISSN:	1944-8007
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DUAL-WAVELENGTH RADAR; FALL SPEEDS; SCATTERING; SIGNATURES; MICROPHYSICS; CAPABILITIES; SNOWFLAKES; VELOCITIES; RETRIEVAL; SIZE Multiple languages Geosciences, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/28122