ustarThreshold: Find the u* threshold

In FREddyPro: Post-Processing EddyPro Full Output File

Description

Function implementing the methodology by Papale et al. 2006

Usage

ustarThreshold(data, sunset = 19, sunrise = 6)

Arguments

data	The data frame
sunset	Time of sunset as a real number (0-23)
sunrise	Time of sunrise as a real number (0-23)

Details

Air temperature is split into 7 classes and u* within each class is split into 20 classes (see Papale et al. 2006). Sunrise and sunset time is used to define nightime data

Author(s)

Georgios Xenakis

References

Papale D, Reichstein M, Aubinet M, Canfora E, Bernhofer C, Kutsch W, Longdoz B, Rambal S, Valentini R, Vesala T & et al. (2006) Towards a standardized processing of Net Ecosystem Exchange measured with eddy covariance technique: algorithms and uncertainty estimation. Biogeosciences, Copernicus GmbH, 3, 571 - 583

Examples

## Load the data
data(fluxes)

## Calculate U* and print on screen
ustar=ustarThreshold(fluxes,sunset=19,sunrise=6)
print(ustar)

FREddyPro documentation built on May 29, 2017, 7:22 p.m.