.get_Dx

D_x: Calculate diffusion coefficient for a given temperature and pressure

Implements models of leaf temperature using energy balance. It uses units to ensure that parameters are properly specified and transformed before calculations. It allows separate lower and upper surface conductances to heat and water vapour, so sensible and latent heat loss are calculated for each surface separately as in Foster and Smith (1986) <doi:10.1111/j.1365-3040.1986.tb02108.x>. It's straightforward to model leaf temperature over environmental gradients such as light, air temperature, humidity, and wind. It can also model leaf temperature over trait gradients such as leaf size or stomatal conductance. Other references are Monteith and Unsworth (2013, ISBN:9780123869104), Nobel (2009, ISBN:9780123741431), and Okajima et al. (2012) <doi:10.1007/s11284-011-0905-5>.

Chris Muir

tealeaves

Solve for Leaf Temperature Using Energy Balance

.get_Dx function

<dl><dt>D_0</dt>
<dd>Diffusion coefficient at 273.15 K (0 °C) and 101.3246 kPa</dd>
<dt>Temp</dt>
<dd>Temperature in Kelvin</dd>
<dt>eT</dt>
<dd>Exponent for temperature dependence of diffusion</dd>
<dt>P</dt>
<dd>Atmospheric pressure in kPa</dd>
<dt>unitless</dt>
<dd>Logical. Should function use parameters with <code>units</code>? The function is faster when FALSE, but input must be in correct units or else results will be incorrect without any warning.</dd></dl>

Arguments

D_x: Calculate diffusion coefficient for a given temperature and pressure — .get_Dx

<dl>

<dt>D_0</dt>
<dd>Diffusion coefficient at 273.15 K (0 °C) and 101.3246 kPa</dd>


<dt>Temp</dt>
<dd>Temperature in Kelvin</dd>


<dt>eT</dt>
<dd>Exponent for temperature dependence of diffusion</dd>


<dt>P</dt>
<dd>Atmospheric pressure in kPa</dd>


<dt>unitless</dt>
<dd>Logical. Should function use parameters with <code>units</code>? The function is faster when FALSE, but input must be in correct units or else results will be incorrect without any warning.</dd>

</dl>

.get_Dx: D_x: Calculate diffusion coefficient for a given temperature and pressure

Description

Usage

Value

Arguments

Details

References

Examples