Effects of leaf hairs on leaf temperature, gas exchange
and water use efficiency
To quantify how leaf hairs would influence CO2 and
H2O exchange, water use efficiency (WUE, the ratio of
CO2 and H2O exchange rates) and leaf
temperature, we simulated gas exchange and leaf temperature for a range
of combinations of parameters (resistance added by hairs, leaf size,
wind speed, stomatal conductance, incident radiation, air temperature
and ambient humidity), by combining a steady-state version of the
dynamic leaf energy balance model that we used to estimateg bh with a widely used biochemical model of
photosynthesis (see Supporting Information Methods S5 for details).