BioCro 0.93

Simulates the hourly conditions from daily

Usage

weach(X, lati, ts = 1, temp.units = c("Fahrenheit", "Celsius"), rh.units = c("percent", "fraction"), ws.units = c("mph", "mps"), pp.units = c("in", "mm"), ...)

Arguments

X
a matrix (or data frame) containing weather information. The input format is strict but it is meant to be used with the data usually obtained from weather stations in Illinois. The data frame should have 11 columns (see details).
lati
latitude at the specific location
ts
timestep for the simulation of sub-daily data from daily. For example a value of 3 would return data every 3 hours. Only divisors of 24 work (i.e. 1,2,3,4, etc.).
temp.units
Option to specify the units in which the temperature is entered. Default is Farenheit.
rh.units
Option to specify the units in which the relative humidity is entered. Default is percent.
ws.units
Option to specify the units in which the wind speed is entered. Default is miles per hour.
pp.units
Option to specify the units in which the precipitation is entered. Default is inches.
list()
additional arguments to be passed to lightME

Value

a matrix returning hourly (or sub-daily) weather data. Dimensions 8760 (if hourly) by 8.

Description

Manipulates weather data in the format obtained from WARM (see link below) and returns the format and units needed for most functions in this package. This function should be used for one year at a time. It returns hourly (or sub-daily) weather information.

Details

This function was originally used to transform daily data to hourly data. Some flexibility has been added so that other units can be used. The input data used originally looked as follows.

All the units above are the defaults but they can be changed as part of the arguments.

Examples

data(cmi0506)
tmp1 <- cmi0506[cmi0506$year == 2005,]
wet05 <- weach(tmp1,40)

# Return data every 3 hours
wet05.3 <- weach(tmp1,40,ts=3)