Ortiz De Jesús, Xiomara Y.

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    Methodology to improve the nexrad rain rate estimates
    (2011) Ortiz De Jesús, Xiomara Y.; Cruz Pol, Sandra L.; College of Engineering; Ramirez, Nazario; Colom Ustáriz, José; Ierkic, Henrick Mario; Department of Electrical and Computer Engineering; Ríos, Isabel
    There is a limitation of instruments to measure rainfall amounts in Puerto Rico. One of the instruments is the S-band NEXRAD radar located at Cayey. Due to the Earth’s curvature, with the information of the radar from only one point in the island, it is difficult to observe the lower part of the troposphere, where the weather events occur. Such uncertainty makes predictions and detections of weather events very difficult. With current Z-R relationships, there is an increase in the error due to the distance from the radar and the observation point. New Z-R relations are being developed using rain gauges to validate the data. These relationships are proven to be very effective, depending in the region it is applied to and the type of rain. For tropical region, the most common Z-R relationship currently used is Rosenfeld tropical (Z=250R1.2). The development of a reliable Z-R relationship applied to different areas in Puerto Rico, is necessary, in order to accurately calculate a more realistic estimation of rain rate from radar data. The objective of this project is to develop program codes for supporting this goal and will later be applied to the DCAS radars deployed in the student testbed (IP3) for evaluation of the improvements provided by this new technology.