DocumentCode :
493806
Title :
Spatial characterization and downscaling of rain attenuation fields from Numerical Weather Prediction Models
Author :
Montopoli, Mario ; Marzano, F.S.
Author_Institution :
DIEI, Univ. of L´´Aquila, L´´Aquila
fYear :
2009
fDate :
23-27 March 2009
Firstpage :
318
Lastpage :
322
Abstract :
The development of a stochastic spatial downscaling algorithm, able to enhance the spatial resolution of rain or attenuation fields considered as input, is illustrated. The proposed algorithm takes advantages from the spatial characterization of the rain fields derived from numerical weather prediction models (NWPM) simulations at coarse spatial resolution. The associated attenuation field at frequencies higher than X band are derived from a numerical scattering simulator based on the T-matrix approach. The stochastic spatial downscaling technique will be described and used to provide an ensemble of possible realizations at a spatial resolution higher than that available at the output of the MM5 simulations which has been taken, for our purpose, as the reference NWPM. The developed methodology will be applied and discussed for some case studies where MM5 outputs, rain-gauge data and ground-based radar observations were available.
Keywords :
numerical analysis; rain; stochastic processes; weather forecasting; MM5 simulations; T-matrix approach; coarse spatial resolution; ground-based radar observations; numerical scattering simulator; numerical weather prediction models; rain attenuation fields; rain-gauge data; spatial characterization; stochastic spatial downscaling algorithm; stochastic spatial downscaling technique; Attenuation; Frequency; Numerical models; Numerical simulation; Predictive models; Radar scattering; Rain; Spatial resolution; Stochastic processes; Weather forecasting;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
Type :
conf
Filename :
5067631
Link To Document :
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