A Climatology of Disdrometer Measurements of Rainfall in Finland over Five Years with Implications for Global Radar Observations

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Leinonen , J , Moisseev , D , Leskinen , M & Petersen , W A 2012 , ' A Climatology of Disdrometer Measurements of Rainfall in Finland over Five Years with Implications for Global Radar Observations ' Journal of Applied Meteorology and Climatology , vol 51 , no. 2 , pp. 392-404 . , 10.1175/JAMC-D-11-056.1

Title: A Climatology of Disdrometer Measurements of Rainfall in Finland over Five Years with Implications for Global Radar Observations
Author: Leinonen, Jussi; Moisseev, Dmitri; Leskinen, Matti; Petersen, Walter A.
Contributor: University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
Belongs to series: Journal of Applied Meteorology and Climatology
ISSN: 1558-8424
Abstract: To improve the understanding of high-latitude rain microphysics and its implications for the remote sensing of rainfall by ground-based and spaceborne radars, raindrop size measurements have been analyzed that were collected over five years with a Joss–Waldvogel disdrometer located in Järvenpää, Finland. The analysis shows that the regional climate is characterized by light rain and small drop size with narrow size distributions and that the mutual relations of drop size distribution parameters differ from those reported at lower latitudes. Radar parameters computed from the distributions demonstrate that the high latitudes are a challenging target for weather radar observations, particularly those employing polarimetric and dual-frequency techniques. Nevertheless, the findings imply that polarimetric ground radars can produce reliable “ground truth” estimates for space observations and identify dual-frequency radars utilizing a W-band channel as promising tools for observing rainfall in the high-latitude climate.
Peer review status: Peer reviewed
URI: http://hdl.handle.net/10138/36973
Date: 2012
Subject: RAINDROP SIZE DISTRIBUTION
POLARIMETRIC RADAR
DISTRIBUTION PARAMETERS
DIFFERENTIAL REFLECTIVITY
POLARIZATION RADAR
DUAL-WAVELENGTH
DOPPLER RADAR
PHASE-SHIFT
DISTRIBUTIONS
MODEL
114 Physical sciences
Rights: http://www.ametsoc.org/pubs/copyrightinfo/ams_copyright_policy_2010.pdf


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