hourly_windspeed function

Estimation of the hourly wind speed from daily mean data

This function estimates the hourly wind speed from a dataset with mean daily wind speeds. Hourly wind speeds from daily values are computed using the formulas proposed by Guo et al (2016), using mean daily values (u2med, required) and maximum ones (u2max, optional). If only mean wind values are available, the function uses a modified version of the Guo formula, so that the maximum values are obtained in daytime hours.

hourly_windspeed(climdata)

Arguments

• climdata: a dataframe with daily wind speed data. Required columns are Year, Month, Day and u2med. u2max is an optional data column.

Returns

dataframe with the columns Date, Year, Month, Day, DOY, Hour and u2 (hourly wind speed, m s-1).

Examples

# Generate hourly wind speed for the example dataset
library(magrittr)
library(dplyr)
library(lubridate)
Tudela_Hu2 <- hourly_windspeed(Tudela_DW)

References

Guo Z, Chang C, Wang R, 2016. A novel method to downscale daily wind statistics to hourly wind data for wind erosion modelling. In: Bian F., Xie Y. (eds) Geo-Informatics in Resource Management and Sustainable Ecosystem. GRMSE 2015. Communications in Computer and Information Science, vol 569. Springer, Berlin, Heidelberg

Author(s)

Carlos Miranda, carlos.miranda@unavarra.es