Application of Effective Precipitation Index in Rainstorm Flood Disaster Monitoring and Assessment

doi:10.3969/j.issn.1000-6362.2016.01.011

Abstract

Abstract:

Scientific and effective monitoring and assessment are significant to prevent and mitigate the rainstorm flood disasters. Based on the Effective Precipitation Index (EP), the indices for flood monitoring and assessment at both site and regional scales were established. Using daily meteorological data from 76 stations in Hubei province and disaster loss data related during 1961 to 2014, the decay parameter and critical rainfall were determined, and the performance of the index in historical rainstorm flood assessment and real-time monitoring was examined. The results showed that the calibrated EP index explained 78.1% variances of damaged crop area, and it was sensitive to identify typical extreme and severe flood year from 1961 to 2014. During the real-time rainstorm flood in 2014, the EP index showed a certain capability to determine the start, duration, and strength of each flood process, while there was disagreement for local and discontinuous flood processes. Generally, the EP index was simple in calculation, reasonable in analysis and easy in spread. So it had more advantages in rainstorm flood evaluation, such as historical ranking, annual climatic assessment, disaster loss pre-evaluation, risk zoning, as well as crop yield prediction.

Key words: Effective Precipitation Index, Parameter calibration, Rainstorm flood, Application validation

QIN Peng-cheng, LIU Min, LI Lan. Application of Effective Precipitation Index in Rainstorm Flood Disaster Monitoring and Assessment[J]. Chinese Journal of Agrometeorology, 2016, 37(01): 84-90.

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