Fig. 13
Comparison between LUCAS and either McDowell et al.58, Zhang et al.12, GPASOIL-v0 or GPASOIL-v1.1. LUCAS compiled Olsen P with a cropland vs grassland distinction over Europe. The comparison focuses on the distribution in deciles as the simulations and LUCAS were not based on same chemical extraction. All LUCAS sites within half-degree grid-cell were averaged, with a distinction between cropland and grassland. Years used for the modelling approach to perform the comparison are given in Table 13. As the number of grid-cells vary between the modelling approach of McDowell et al.58, Zhang et al.12, GPASOIL-v0 or GPASOIL-v1.1, we masked LUCAS according to the mask of each modelling approach output. Note that LUCAS was part of the data source used in McDowell et al.58 to train their statistical model.
