.get_Pa {tealeaves}

P_a: density of dry air (g / m^3)

Description

P_a: density of dry air (g / m^3)

Usage

.get_Pa(T_leaf, pars, unitless)

Arguments

T_leaf

Leaf temperature in Kelvin

pars

Concatenated parameters (leaf_par, enviro_par, and constants)

unitless

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

Details

P_\mathrm{a} = P / (R_\mathrm{air} (T_\mathrm{leaf} - T_\mathrm{air}) / 2)

Symbol	R	Description	Units	Default
P	P	atmospheric pressure	kPa	101.3246
R_\mathrm{air}	R_air	specific gas constant for dry air	J / (kg K)	287.058
T_\mathrm{air}	T_air	air temperature	K	298.15
T_\mathrm{leaf}	T_leaf	leaf temperature	K	input

Value

Value in g / m^3 of class units

Examples

library(tealeaves)

cs <- make_constants()
ep <- make_enviropar()
lp <- make_leafpar()

T_leaf <- set_units(298.15, K)

tealeaves:::.get_Pa(T_leaf, c(cs, ep, lp), FALSE)