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Real Time monitoring of Extreme Rainfall Events with Simple X-Band Mini Weather Radar

Atmospheric and Climate Sciences 2016年第2期6卷 285-299页

作者： Silvano Bertoldo Claudio Lucianaz Marco Allegretti Giovanni Perona CINFAI (National Consortium for the Physics of Atmosphere and Hydrosphere) localunit c/o DET (Department of Electronics and Telecommunications) Politecnico di Torino Turin Italy

Real time rainfall events monitoring is very important for a large number of reasons: Civil Protection, hydrogeological risk management, hydroelectric power purposes, road and traffic regulation, and tourism. Efficient monitoring operations need continuous, high-resolution and large-coverage data. To monitor and observe extreme rainfall events, often much localized over small basins of interest, and that could frequently causing flash floods, an unrealistic extremely dense rain gauge network should be needed. On the other hand, common large C-band or S-band long range radars do not provide the necessary spatial and temporal resolution. Simple short-range X-band mini weather radar can be a valid compromise solution. The present work shows how a single polarization, non-Doppler and non-coherent, simple and low cost X-band radar allowed monitoring three very intense rainfall events occurred near Turin during July 2014. The events, which caused damages and floods, are detected and monitored in real time with a sample rate of 1 minute and a radial spatial resolution of 60 m, thus allowing to describe the intensity of the precipitation on each small portion of territory. This information could be very useful if used by authorities in charge of Civil Protection in order to avoid inconvenience to people and to monitor dangerous situations.

关键词： X-Band Radar Extreme Rainfall Event precipitation monitoring High Temporal Resolution High Spatial Resolution Real Time monitoring Single Polarization

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