Extended Data Fig. 2: Weight of each component of the bud energy budget in simulating bud temperature.
From: Accurate phenology analyses require bud traits and energy budgets
Response of the bud-air temperature difference (ΔT) is a complex nonlinear response to Rabs (red), H (orange) and LWbud (Blue). For more clarity, energy components were divided by 500, 100, 500 and 10 for Rabs, H, LWbud and E, respectively. Each point corresponds to the mean ΔT simulated for six species across Europe (n = 1059 sites) under idealized conditions using field observation of budburst and global meteorological data. All sites and species were pooled together. Solar absorptivity to shortwave radiation is set to 0.8. The error bars represent the spatial and species variability (±1SD around the mean, n = 5050). Panels b, c, d and e represent the weight of Rabs, LWbud, H and E in explaining ΔT variability, by showing the relationships of their respective partial residuals in the multiple linear regression ΔT=Rabs + H+LWbud+E (R² = 0.85) using global yearly averages. We observe that H, Rabs and LWbud account for most of the variability in ΔT. Red full lines represent the slope coefficient in the linear regression. Dashed lines represent the standard error associated to each coefficient.
