New AGB estimates from SMOS L-VOD are freely available at CATDS (Centre Aval de Traitement des Données SMOS). The method is based in the paper by Rodriguez et al., 2018, Biogeosciences, 15(14) :4627–4645, 2018. doi :10.5194/bg-15-4627-2018
More information and documentation here :
and to access the dataset
https://data.catds.fr/cecsm/Land_products/L4_Above_Ground_Biomass/