Fig. 1: Regional estimates of the natural biomass land sink (SLAND,B) between 2001 and 2018.
From: Tracking 21st century anthropogenic and natural carbon fluxes through model-data integration
The figures compare the estimates by 13 DGVMs of the TRENDY model-intercomparison project (v8) vs. our observation-based estimates with BLUE (woody vegetation only). The temporal evolution for each region between 2001 and 2018 is shown in a. The lines mark the TRENDY multi-model average resp. the BLUE average from two threshold approaches to exclude unrealistically high woody biomass carbon densities (see Supplementary materials). The TRENDY multi-model range and the range between the BLUE threshold approaches are shown as shaded areas. The variability of SLAND,B, averaged over each region, is presented in b: The whiskers extend from the multi-model minimum to the multi-model maximum between 2001 and 2018, and the multi-model average over all years is shown as gray triangles. Uptakes of carbon by vegetation are negative (sinks), whereas releases of carbon by vegetation are positive (sources).
