flux_match_fixed

Provides the <code>f_end</code> column for <code>flux_match</code>

internal

Toolbox to process raw data from closed loop flux chamber (or tent)
setups into ecosystem gas fluxes usable for analysis. It goes from a
data frame of gas concentration over time (which can contain several
measurements) and a meta data file indicating which measurement was done
when, to a data frame of ecosystem gas fluxes including quality diagnostics.
Organized with one function per step, maximizing user flexibility and backwards
compatibility. Different models to estimate the fluxes from the raw data are
available: exponential as described in
Zhao et al (2018) <doi:10.1016/j.agrformet.2018.08.022>, exponential as described in
Hutchinson and Mosier (1981) <doi:10.2136/sssaj1981.03615995004500020017x>,
quadratic, and linear. Other functions include quality assessment,
plotting for visual check, calculation of fluxes based on the setup
specific parameters (chamber size, plot area, ...), gross primary production
and transpiration rate calculation, and light response curves.

Joseph Gaudard

fluxible

Ecosystem Gas Fluxes Calculations for Closed Loop Chamber Setup

flux_match_fixed function

<dl><dt>field_record</dt>
<dd>dataframe recording which measurement happened when.
Has to contain at least a column containing the start of each measurement,
and any other column identifying the measurements.</dd>
<dt>start_col</dt>
<dd>start column in field_record (<code>ymd_hms</code> format)</dd>
<dt>measurement_length</dt>
<dd>length of the measurement (in seconds)
from the start specified in the <code>field_record</code></dd></dl>

Arguments

Using a fixed measurement length to slice the measurements — flux_match_fixed

<dl>

<dt>field_record</dt>
<dd>dataframe recording which measurement happened when.
Has to contain at least a column containing the start of each measurement,
and any other column identifying the measurements.</dd>


<dt>start_col</dt>
<dd>start column in field_record (<code>ymd_hms</code> format)</dd>


<dt>measurement_length</dt>
<dd>length of the measurement (in seconds)
from the start specified in the <code>field_record</code></dd>

</dl>

flux_match_fixed: Using a fixed measurement length to slice the measurements

Description

Usage

Arguments