Temperature (T) controls c. half of the temporal variation in leaf respiratory CO2 efflux (RCO2) during the night (Bruhn et al., 2022) due to a T sensitivity of RCO2, for example Q10 (i.e. the proportional change in RCO2 measured 10°C apart). Q10 is the most common expression of T sensitivity of leaf RCO2 (Supporting Information Fig.