meteoland (version 2.2.2)

complete_meteo: Complete missing meteo variables

Description

Calculates missing values of relative humidity, radiation and potential evapotranspiration from a data frame with daily values of minimum/maximum/mean temperature and precipitation. The function takes a meteo object (with meteoland names) and complete any missing variable if it is possible

Usage

complete_meteo(meteo, verbose = getOption("meteoland_verbosity", TRUE))

Value

the same meteo data provided with the the variables completed

Arguments

meteo

meteoland weather data

verbose

Logical indicating if the function must show messages and info. Default value checks "meteoland_verbosity" option and if not set, defaults to TRUE. It can be turned off for the function with FALSE, or session wide with options(meteoland_verbosity = FALSE)

Author

Miquel De Cáceres Ainsa, EMF-CREAF

Victor Granda García, EMF-CREAF

Details

#' The function fills values for humidity, radiation and PET only if they are missing in the input data frame. If a column 'SpecificHumidity' is present in the input data, relative humidity is calculated from it. Otherwise, relative humidity is calculated assuming that dew point temperature equals the minimum temperature. Potential solar radiation is calculated from latitude, slope and aspect. Incoming solar radiation is then corrected following Thornton & Running (1999) and potential evapotranspiration following Penman (1948).

References

Thornton, P.E., Running, S.W., 1999. An improved algorithm for estimating incident daily solar radiation from measurements of temperature, humidity, and precipitation. Agric. For. Meteorol. 93, 211-228.

Penman, H. L. 1948. Natural evaporation from open water, bare soil and grass. Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 193, 120-145.

Examples

# \donttest{
# example data
data("meteoland_meteo_example")

# remove MinRelativeHumidity
meteoland_meteo_example$MinRelativeHumidity <- NULL
# complete vars
completed_meteo <- complete_meteo(meteoland_meteo_example)
# check MinRelativeHumidity
completed_meteo$MinRelativeHumidity
# }