Figure S5 Response of Bowen ratio to inter-product diffuse fraction spread. Associations between Bowen ratio and diffuse fraction (k d) across different land model simulations forced using k d from the six products (NCEP/NCAR, NOAA-CIRES-DOE, ERA5, MERRA-2, CERES, and CAM) considered in the present study for (a) arid climate, (b) temperate climate, (c) boreal climate, and (d) polar climate. The lines of best fit and the linear regression equations, with coefficient of determination r 2and p-values are noted. The vertical error bars show the inter-annual standard error for the 10-year period.