NDLI: The Role of C-band Dual Polarization Radars for GPM Ground Validation

Content Provider	IEEE Xplore Digital Library
Author	Gorgucci, E. Baldini, L. Chandrasekar, V.
Copyright Year	2006
Description	Author affiliation: Ist. di Sci. dell'Atmosfera e del Clima Consiglio Naz. delle Ric. Rome, Rome (Gorgucci, E.; Baldini, L.)
Abstract	Dual polarization weather radars have brought in significant advancement to precipitation observation, as rainfall rate estimation, microphysical characterization, and hydrometeor classification. The improvements have been mostly demonstrated at S-band frequency where attenuation effects are usually negligible. In Europe C-band is largely adopted in operational and research radars because of larger differential phase measurements, reduced antenna size and an overall lower cost with respect to that of S-band systems. The major disadvantage is that the signal attenuation is not negligible. In the context of GPM Ground Validation, techniques to compensate the reflectivity measurements for propagation effects are thus necessary to obtain GV products from ground-based C-band radars. The attenuation correction methodology using differential phase shift as constraint has shown a good performance. One of the advantages of polarimetric radar measurements is their self-consistency. Starting from the initial guess of attenuation correction provided by the rain profiling algorithm, self-consistency is used in an iterative technique to improve the accuracy of attenuation correction at C-band. The obtained accuracy is evaluated in terms of bias and standard error using C-band profiles generated from S-band dual polarization observations.
Starting Page	32
Ending Page	35
File Size	231208
Page Count	4
File Format	PDF
ISBN	0780395107
DOI	10.1109/IGARSS.2006.13
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-31
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Polarization Attenuation Radar measurements Meteorological radar Frequency Europe Radar antennas Phase measurement Antennas and propagation Costs
Content Type	Text
Resource Type	Article

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