Description Usage Arguments Details Author(s) References Examples
View source: R/ustar_threshold.r
Function implementing the methodology by Papale et al. 2006
1 | ustarThreshold(data, sunset = 19, sunrise = 6)
|
data |
The data frame |
sunset |
Time of sunset as a real number (0-23) |
sunrise |
Time of sunrise as a real number (0-23) |
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
Georgios Xenakis
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
1 2 3 4 5 6 | ## Load the data
data(fluxes)
## Calculate U* and print on screen
ustar=ustarThreshold(fluxes,sunset=19,sunrise=6)
print(ustar)
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