Extended Data Fig. 2: Global gridded yield potential (Ypot) comparison of two approaches.
Comparison of gridded Ypot predictions based on country-blind climate zones extrapolation (left panels) and metamodel (right panels) versus site-level Ypot from the Global Yield Gap Atlas (GYGA Ypot) for three crops and two water regimes. Each point represents a simulation site (reference weather station). Predictions were derived following nearest-neighbor-distance-matching leave-one-out cross-validation method. The root mean square error relative to GYGA Ypot average (RSME %, also known as normalized RMSE) is shown for each method and crop combination. Other model performance metrics are shown in Supplementary Table 2.
