Assgnment #1 Estimation of GEV Parameters for CanRCM4 Simulations_January 20, 2022

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Jan 9, 2024

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Assignment #1: Calculation of GEV parameters from the Canadian Regional Model (CanCRCM4) historical runs for the NAM44 domain. [Due on January 26, 2022] You were given annual peak hourly precipitation values of a CanCRCM4 historical (1950-2100) run for the NAM44 domain in this assignment. There are 153 columns in the .csv data file. First two columns: x(Longitude) and y (Latitude). The remaining 151 columns are data precipitation data values from 1951-2100 expressed in kg/m 2 /sec. Calculate the location (μ), scale (σ) and shape (ξ) parameters for each grid using the Generalized Extreme Value (GEV) method. The NAM44 domain contains 20,150 grids. The cumulative distribution function of GEV distribution Note: You need to write a ‘for’ loop to read each line in the .csv file. Use method =”Lmoments” in function ‘fevd’ if you use R. Extract the location, scale and shape parameters and finally save ‘Lon’, ‘Lat’, ‘Location’, ‘Scale’, and ‘Shape’ parameters as a .csv file. Submit the csv file.
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