Polarimetric X-Band weather radar
High-resolution rainfall estimation
Ricardo Reinoso Rondinel (TU Delft - Atmospheric Remote Sensing)
Herman W.J. Russchenberg (TU Delft - Geoscience and Remote Sensing)
C.M.H. Unal (TU Delft - Atmospheric Remote Sensing)
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Abstract
Weather observations are conventionally performed by C-band weather radars with spatial and temporal resolution of 1 km and 5 min, respectively. However, in recent years, C-band weather radars have been upgraded from single to dual-polarimetric to improve the quality of their measurements. Still, these spatial and temporal resolutions might be undesirable for the detection of localized heavy rainfall which might be necessary to model fast rainfall-runoff processes in urbanized areas. Therefore, X-band weather radars have been introduced to increase the resolution of rainfall rate (R) estimation. For example, in the USA, a network of dual-polarimetric X-band radars has been used to estimate rainfall rates of severe storms at high-resolution (Wang and Chandrasekar, 2010). In Western Europe, the RainGain project includes a network of X-band radars to obtain high-resolution rainfall rates to cope with urban flooding (http://www.raingain.edu).