Fig. 2: Summary of in situ validation of the hybrid and process-based models.
From: A deep learning-based hybrid model of global terrestrial evaporation
a, b Violin plots showing the distribution of the Kling-Gupta Efficiency (KGE) metric for the transpiration stress factor (St) and evaporation (E), respectively, calculated for all flux tower and sap flow measurement sites. The KGE distribution for the hybrid and process-based models are classified according to short and tall vegetation types. The dashed lines represent the median (large dashes) and the interquartile range (small dashes). The red line represents a KGE value of -0.41, above which a model prediction or simulation is considered better than the mean seasonal cycle. For the sap flow sites, transpiration estimates (Et) instead of E are used.
