Fig. 2: Comparison of the frequency of water limitation across different IPCC regions based on LMIP-CMIP6 model simulations and observations.
From: Large biases in the frequency of water limitation across Earth system models
Region-wise evaluation of the frequency of water limitation, using observations-based estimates and corresponding LMIP-CMIP6 model simulations. We first derived the frequency of water limitation in every pixel and then computed the mean of these values within each IPCC region for model and observational data. We retained only IPCC regions that contained at least ten grid cells. a Vertical axis shows θcrit calculated using EF vs normalized total-column soil moisture from LMIP-CMIP6 data (2007–2014). Horizontal axis represents θcrit derived from normalized SIF and normalized TWS from GRACE (2007–2014). b IPCC reference regions. Details of all datasets and normalizations are provided in Methods. The multi-model mean was calculated with models CESM2, CMCC-ESM2, CNRM-CM6-1, CNRM-ESM2-1, E3SM-1-1, EC-Earth3-Veg, IPSL-CM6A-LR, MIROC6 and UKESM1-0-LL.
