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flux (version 0.2-2)

Flux rate calculation from dynamic closed chamber measurements

Description

Functions for the calculation of greenhouse gas flux rates from closed chamber concentration measurements. The package follows a modular concept: Fluxes can be calculated in just two simple steps or in several steps if more control in details is wanted. Additionally plot and preparation functions as well as functions for modelling gpp and reco are provided.

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Version

Install

install.packages('flux')

Monthly Downloads

374

Version

0.2-2

License

GPL-2

Maintainer

Gerald Jurasinski

Last Published

October 2nd, 2013

Functions in flux (0.2-2)

Append a data.frame to another including consistency checks

One day data from non-steady state closed chamber measurements in the Trebeltal

Functions for bulk plotting of concentration change with time as kind of diagnostic plots for flux rate calculations

Plot diagnostic plots for GPP (NEE) models derived with reco and gpp.

Flux rate estimation with dynamic closed chamber data

Calculate gas flux rate from two concentrations

Model GPP from CO2 closed chamber flux data

Plot diagnostic plots for Reco models.

Internal functions of the package flux that are usually not called (or only implicitly) by the user

Medium frequency concentration data and fluxes from non-steady state closed chamber measurements

simple export wrapper

Linear interpolation between data points similar to approx.

Inspect and alter prepared ghg concentration data

Estimate gas flux rates using non-steady-state closed chamber data

Estimate (ghg) flux rates from online dynamic closed chamber measurements in through-flow mode.

Prepare data for flux rate estimation with flux or GPP/Reco modelling.

Determine calibration measurement ranges according to the dates of real measurements

Calculate the area under a line(curve).

Model R_eco from CO2 exchange closed chamber data.