Fig. 3: Analysis of water limitation at three selected eddy-covariance sites.
From: Large biases in the frequency of water limitation across Earth system models
Evaporative fraction (EF) as a function of the active land water (ALW) in observations versus CMIP6 models. a, f, k, eddy-covariance measurements from the FLUXNET2015 dataset. b, g, l Data from UKESM1-0-LL. c, h, m Data from IPSL-CM6A-LR. d, i, n Data from EC-Earth3-Veg. e, j, o Data from CNRM-ESM2-1. When the decrease in the EF from its maximum value to the y-axis intercept was less than 0.3, we assigned a status of no water limitation (NA). The total soil moisture was normalized to ease the comparison between model outputs and the corresponding observed values (see Methods). GF-Guy is an evergreen broadleaf forest site situated in the coastal region of the north-western Amazon, in French Guyana. BR-Sa3, another site characterized by evergreen broadleaf forest, lies further south and inland in Brazil. US-Ton is an oak savanna woodland located near Sacramento, United States.
