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Activity Number:
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589
- Environmental Extremes
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Type:
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Contributed
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Date/Time:
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Wednesday, August 2, 2017 : 2:00 PM to 3:50 PM
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Sponsor:
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Section on Statistics and the Environment
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Abstract #324261
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View Presentation
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Title:
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Comparison of the Extreme Value Distribution Parameters Applied to Extreme Rainfall Events in Central America
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Author(s):
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Luis Cid-Serrano* and HELEN GUILLEN and ERIC ALFARO
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Companies:
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Universidad Del Bio-Bio and UNIVERSIDAD DE COSTA RICA and UNIVERSIDAD DE COSTA RICA
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Keywords:
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Extreme Value Distribution ;
Caribbean ;
Pacific ;
Central America
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Abstract:
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We analyze and compare the distributional characteristics of extreme rainfall events in the Caribbean and Pacific slopes of Central America. The objective was to establish if there exist differences in the parameters of the Generalized Extreme Value Distribution (GEVD) as probabilistic model, for a comparative study of extreme climatic events between the two slopes. As extreme events we consider those values included in the 95 percentile of the distribution. We used daily rainfall time series between 1971 and 2000 from 103 weather stations in Central America, classified into three geographic zones (Caribbean, Pacific and Intermediate Zone). To each station we fitted its GEVD and using bootstrap we calculated the test statistics for the hypothesis that there exist no differences between the corresponding parameters of each zone. We concluded that there are differences in the location parameter between the three zones; comparison of the shape parameters showed differences between Caribbean and the intermediate zone. The scale parameter showed differences between Pacific and Caribbean slopes, compared with the intermediate zone.
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Authors who are presenting talks have a * after their name.
