State Water Resources Research Institute Program

Project ID: 2012FL301B
Title: Development and Evaluation of Indices for Bias Assessment for Radar-based Rainfall Estimates
Project Type: Research
Start Date: 3/01/2012
End Date: 2/28/2013
Congressional District: 19
Focus Categories: Hydrology, Methods, Models
Keywords: NEXRAD, Rain gauge data, Homogeneous Rain areas, South Florida Water Management District, Indices, spatial and temporal, statistical, numerical weather prediction, spatial analysis, GIS
Principal Investigator: Teegavarapu, Ramesh S (Florida Atlantic University)
Federal Funds: $ 10,000
Non-Federal Matching Funds: $ 20,000
Abstract: The main objective of the proposed research study is to develop and evaluate several visual, qualitative and quantitative indices for evaluation of biases that would ultimately be used to improve the NEXRAD rainfall data. The proposed study would provide a complete assessment of biases at different spatial and temporal resolutions; identify any issues with the radar data and issue specific recommendations to SFWMD for improvement of the data in future. The indices will be evaluated at different levels and they include: space, event, time and point. Indices based on statistical methods will also be developed in this study. The study will use state-of-the-art qualitative and quantitative indices for evaluation of the radar data quality for the South Florida Water Management District (District) using a network of rain gages at different temporal resolutions. The proposed research is highly relevant and critical to a number of water resources management agencies (e.g. South Florida Water Management District (SFWMD)) that currently use NEXRAD based rainfall data for modeling and management of day-to-day operations of water resources systems. The products derived from the proposed study are expected to be tested for real-time use of NEXRAD-based rainfall data improvement by South Florida Water Management District (SFWMD).

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