Table 2. Parameters and variables of the photosynthesis - stomatal conductance models.

Symbol	Value	Unit	Description
Parameters
C	−0.02	m2 sµmol− 1	Slope of the linear relationship between I fac and PPFD in the range 0–25 µmol m− 2 s− 1
	35	Pa	Reference atmospheric CO2 partial pressure
d	1	µmol CO2 m− 2 leaf s− 1	y-intercept of the linear relationship between I fac and PPFD in the range from 0–25 µmol m− 2 s− 1
g b	300	mmol m− 2 s− 1	Leaf boundary layer conductance to water vapour
g fac	13.7	dimensionless	Stomatal sensitivity coefficient
g min	76.2	mmol m− 2 s− 1	Minimum stomatal conductance to water vapour
I fac	0.5	dimensionless	Coefficient representing the extent to which R dark is inhibited in the light
		dimensionless	Ratio between J max and of plant grown at the reference temperature and at the reference CO2 partial pressure
		µmol CO2 g− 1 N s− 1	Slope of linear relationship relating N pa to at the reference temperature and at the reference CO2 partial pressure
K c	19.42	Pa	Michaelis-Menten constant for carboxylase activity of Rubisco
K o	14 300	Pa	Michaelis-Menten constant for oxgenase activity of Rubisco
O i	21 000	Pa	Internal leaf oxygen concentration
p 1	−0.012	dimensionless	Coefficient representing the extent to which J fac is modified by the CO2 partial pressure during plant growth
p 2	0.036	dimensionless	Coefficient representing the extent to which J fac is modified by the temperature during plant growth
p 3	0.3192	µmol CO2 g− 1 N s− 1	Coefficient representing the effect of CO2 partial pressure during plant growth on k 3
p 4	0.94	dimensionless	Coefficient representing the effect of growth temperature on entropy term for J max and
R	8.314	J K− 1 mol− 1	Perfect gas constant
R fac	0.011	dimensionless	Ratio between R dark and at reference temperature
SLA		m2 leaf g− 1 DM	Specific leaf area
α	0.05	mol CO2 mol− 1 photon	Apparent quantum yield of net photosynthesis at saturating CO2
ΔHaJmax	83 608	J mol− 1	Activation energy of J max
ΔHaKc	65 800	J mol− 1	Activation energy of K c
ΔHaKo	36 000	J mol− 1	Activation energy of K o
ΔHaRdark	50 861	J mol− 1	Activation energy of R dark
ΔHaVcmax	86 529	J mol− 1	Activation energy of
ΔHaτ	−28 990	J mol− 1	Activation energy of τ
ΔHd	200 000	J mol− 1	Deactivation energy
	660.42	J K− 1 mol− 1	Entropy term of J max for plant grown at reference temperature
	654.24	J K− 1 mol− 1	Entropy term of for plant grown at reference temperature
τ	2 838	dimensionless	Rubisco specificity factor at reference temperature
Input Variables
C a		Pa	CO2 partial pressure in the ambient air
C g		Pa	Atmospheric CO2 partial pressure during preceding month of plant growth
h s		dimensionless	Leaf surface relative humidity
PPFD		µmol m− 2 s− 1	Photosynthetic photon flux density
T k		K	Air temperature. In our analysis T k  =  T g
T g		K	Mean air temperature during preceding month of plant growth
T r	293.16	K	Reference temperature for metabolic activity
Output variables
A n		µmol m− 2 s− 1	Net photosynthesis
C i		Pa	Internal CO2 partial pressure
C s		Pa	Leaf surface CO2 partial pressure
g s		mmol m− 2 s− 1	Stomatal conductance to water vapor
k 2		Pa	Intermediate variable synthesizing the Rubisco affinity for CO2
J		µmol m− 2 s− 1	Light dependence of the rate of electron transport
		dimensionless	J fac acclimated to CO2 during plant growth
		dimensionless	J fac acclimated to temperature during plant growth
		dimensionless	J fac acclimated to CO2 and to temperature during plant growth
J max		µmol m− 2 s− 1	Potential rate of RuBP regeneration
		µmol m− 2 s− 1	Potential rate of RuBP regeneration at reference temperature
k3		µmol CO2 g− 1 N s− 1	Slope of linear relationship relating N pa to
		µmol CO2 g− 1 N s− 1	Slope of linear relationship relating N pa to acclimated to CO2 during plant growth
N a		g N m− 2 leaf	Leaf N content per leaf area
N ac		g N m− 2 leaf	Leaf N content per leaf area when W c equals W j
N pa		g N m− 2 leaf	Leaf photosynthetic N content per leaf area
Np ac		g N m− 2 leaf	Leaf photosynthetic N content per leaf area when W c equals W j
R dark		µmol m− 2 s− 1	Leaf dark respiration rate
		µmol m− 2 s− 1	Leaf dark respiration rate at reference temperature
R day		µmol m− 2 s− 1	Leaf respiration rate from processes other than photorespiration
		µmol m− 2 s− 1	Maximum carboxylation rate of Rubisco
		µmol m− 2 s− 1	Maximum carboxylation rate of Rubisco at reference temperature in the absence of any deactivation as a result of high temperature
W c		µmol m− 2 s− 1	Rubisco-limited photosynthetic rate
W j		µmol m− 2 s− 1	RuBP regeneration limited photosynthetic rate through electron transport
		dimensionless	Temperature dependence of J max or
		dimensionless	Temperature dependence of
		dimensionless	Temperature dependence of J max
		dimensionless	Temperature dependence of K c, K o, τ, or R dark
		dimensionless	Temperature dependence of K c
		dimensionless	Temperature dependence of K o
		dimensionless	Temperature dependence of τ
		dimensionless	Temperature dependence of R dark
Γ*		dimensionless	CO2 compensation point in the absence of mitochondrial respiration
		J K− 1 mol− 1	Entropy term acclimated to temperature during plant growth
		J K− 1 mol− 1	Entropy term of J max acclimated to temperature during plant growth
		J K− 1 mol− 1	Entropy term of acclimated to temperature during plant growth

Parameter values are derived from Wohlfahrt et al. [3]–[4].