REddyProc-package: Data processing and plotting utilities of (half-)hourly...

In REddyProc: Data processing and plotting utilities of (half-)hourly eddy-covariance measurements

Description

R eddy processing package with MDS gap filling algorithm, adopted after PV-Wave source code from Markus Reichstein.

The official R-Forge site of this package is here: urlhttp://r-forge.r-project.org/projects/reddyproc/.

A general description and an online tool based on this package can be found here: http://www.bgc-jena.mpg.de/bgi/index.php/Services/REddyProcWeb.

Details

A first overview of the REddyProc functions:

A detailed example of the processing can be found under sEddyProc.example.

These functions help with the preparation of your data for the analysis:

• Loading text files into dataframes: fLoadTXTIntoDataframe

• Preparing a proper time stamp: fConvertTimeToPosix

• Calculating latent variables, e.g. VPD: fCalcVPDfromRHandTair

Then the data can be processed in an R5 reference class framework:

• Initalizing the R5 reference class: sEddyProc.new

• Estimating the turbulence criterion, Ustar threshold, for omitting data from periods of low turbulence: Functions sEstUstarThreshold and sEstUstarThresholdDistribution .

• Gap filling: sMDSGapFill and sMDSGapFillAfterUstar.

• Flux partitioning based on Night-Time: sMRFluxPartition

• Flux partitioning based on Day-Time: sGLFluxPartition

Before or after processing, the data can be plotted:

• Fingerprint: sPlotFingerprint

• Half-hourly fluxes and their daily means: sPlotHHFluxes

• Daily sums (and their uncertainties): sPlotDailySums

• Diurnal cycle: sPlotDiurnalCycle

A complete list of REddyProc functions be viewed by clicking on the Index link at the bottom of this help page.

Also have a look at the package vignettes: get a list with vignette(package = "REddyProc"), view with vignette("DEGebExample").

Author(s)

Department for Biogeochemical Integration at MPI-BGC, Jena, Germany

References

Reichstein M, Falge E, Baldocchi D et al. (2005) On the separation of net ecosystem exchange into assimilation and ecosystem respiration: review and improved algorithm. Global Change Biology, 11, 1424-1439.

Examples

#+++ Detailed example code can be found here:
help('sEddyProc.example')

Example output

No documentation for ‘sEddyProc.example’ in specified packages and libraries:
you could try ‘??sEddyProc.example’

REddyProc documentation built on May 2, 2019, 5:19 p.m.