Title:
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A variational approach to retrieve 3D radar reflectivity composites
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Author:
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Roca Sancho, Jordi; Berenguer Ferrer, Marc; Sempere Torres, Daniel
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica; Universitat Politècnica de Catalunya. CRAHI - Centre de Recerca Aplicada en Hidrometeorologia |
Abstract:
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This study proposes an alternative methodology to obtain high-resolution radar reflectivity composites based on a variational approach considering different
error sources in an explicit manner. The methodology retrieves the 3-dimensional precipitation field most compatible with the observations from the different radars of the network. With this aim, the methodology
uses a model that simulates the radar sampling of the atmosphere. The model settings are different for each radar and include features such as the radar location,
hardware parameters (beam width, pulse length…) and the scan strategy. The methodology follows the concept of an inverse method based on the minimization of a cost function that penalizes discrepancies between the simulated and actual observations for each radar. The simulation model is able to reproduce the effect of beam broadening with the distance and attenuation by intense precipitation.
The methodology has been applied on two radars close to Barcelona (Spain). |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia -Hydrometeorology -Radar meteorology -Hidrometeorologia -Meteorologia -- Instruments -Meteorologia -- Catalunya -- Observacions |
Rights:
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Document type:
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Article - Published version Conference Object |
Published by:
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American Meteorological Society
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