Fig. 4

Comparison of spatial and latitudinal variability in total shortwave radiation and diffuse radiation between the BaRAD product and EPIC-derived estimates. Spatial patterns of the grid-wise difference in (a) diffuse radiation (K↓,d) and (b) total shortwave radiation (K↓) over land. Sub-figure (b) and (d) show the mean latitudinal variability of K↓,d and K↓ over land for the two products. The shaded areas represent the standard deviation. The area-weighted difference in K↓,d (ΔK↓,d) and K↓ (ΔK↓) between the BaRAD product and the EPIC-derived dataset are shown at the top of sub-figures (a) and (c), respectively.