surface.CO2

the CO2 concentration at the canopy surface derived from net ecosystem
 CO2 exchange and measured atmospheric CO2 concentration.

Calculation of physical (e.g. aerodynamic conductance, surface temperature),
and physiological (e.g. canopy conductance, water-use efficiency) ecosystem properties
from eddy covariance data and accompanying meteorological measurements. Calculations
assume the land surface to behave like a 'big-leaf' and return bulk ecosystem/canopy variables.

Juergen Knauer

bigleaf

Physical and Physiological Ecosystem Properties from Eddy
Covariance Data

Thomas Wutzler

Alison Bennett

Soenke Zaehle

Tarek El-Madany

Mirco Migliavacca

surface.CO2 function

<dl><dt>Ca</dt>
<dd>Atmospheric CO2 concentration (umol mol-1)</dd>
<dt>NEE</dt>
<dd>Net ecosystem exchange (umol CO2 m-2 s-1)</dd>
<dt>Ga_CO2</dt>
<dd>Aerodynamic conductance for CO2 (m s-1)</dd>
<dt>Tair</dt>
<dd>Air temperature (degC)</dd>
<dt>pressure</dt>
<dd>Atmospheric pressure (kPa)</dd></dl>

Arguments

CO2 Concentration at the Canopy Surface — surface.CO2

<dl>

<dt>Ca</dt>
<dd>Atmospheric CO2 concentration (umol mol-1)</dd>


<dt>NEE</dt>
<dd>Net ecosystem exchange (umol CO2 m-2 s-1)</dd>


<dt>Ga_CO2</dt>
<dd>Aerodynamic conductance for CO2 (m s-1)</dd>


<dt>Tair</dt>
<dd>Air temperature (degC)</dd>


<dt>pressure</dt>
<dd>Atmospheric pressure (kPa)</dd>

</dl>

surface.CO2: CO2 Concentration at the Canopy Surface

Description

Usage

Value

Arguments

Details

Examples