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Activity Number: 453
Type: Contributed
Date/Time: Wednesday, August 6, 2008 : 2:00 PM to 3:50 PM
Sponsor: Section on Statistics and the Environment
Abstract - #300487
Title: Are We Getting More Rain?
Author(s): Anton Kliewer*+ and Clyde Martin+
Companies: Texas Tech University and Texas Tech University
Address: Department of Mathematics and Statistics, Lubbock, TX, 79409, Dept. of Mathematics and Statistics, Lubbock, TX, 79409,
Keywords: Precipitation ; GEV Distribution ; Climate change
Abstract:

This paper studies measurable responses to climate change at the local level. Our goal was to determine if extreme weather events are increasing. We quantify these extreme events over a long period of time. It has been predicted that there will be an increase in variation in precipitation in southwest. Large fluctuations exist from year to year for the daily precipitation levels for Lubbock, Texas over the last 93 years. The precipitation data was fit to the Generalized Extreme Value distribution. Numerous computer simulations were conducted to determine the behavior of the GEV distribution given both static and changing data sets. Comparing these results with the weather data from Lubbock, Texas, the conclusion is that while the precipitation levels vary from year to year, there is no long term change, rather there exists a cyclic pattern.


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