c4_temperature_param_flat {PhotoGEA}R Documentation

C4 temperature response parameters for a flat response

Description

Parameters that specify a flat temperature response (in other words, no dependence on temperature) for important C4 photosynthetic parameters, intended to be passed to the calculate_temperature_response function.

Usage

c4_temperature_param_flat

Format

List with 10 named elements that each represent a variable whose temperature-dependent value can be calculated using either an Arrhenius or Gaussian equation:

Each of these is a list with 4 named elements:

Source

Some of these parameters (Vcmax, Vpmax, RL, gmc, and J) are normalized to their values at 25 degrees C. These variables include _norm in their names to indicate this.

The remaining parameters (Kc, Ko, Kp, gamma_star, ao, and gmc) are not normalized because they are assumed to not vary significantly between species.

Here, the activation energy values (Ea) are all set to 0, which means that the values will not depend on temperature. The Arrhenius scaling factors c are chosen to reproduce the parameter values at 25 degrees C as specified in von Caemmerer (2021). (See c4_temperature_param_vc.)

References:


[Package PhotoGEA version 1.3.3 Index]