Nuclear bomb testing data from the 1960s shows Earth system models underestimate carbon uptake by plants and soils. The carbon storage is shorter-lived than thought, affecting climate predictions. Accurate models need better global carbon cycle representation.
Radiocarbon analysis reveals that Earth system models underestimate the carbon uptake in terrestrial ecosystems and suggest quicker carbon turnover, highlighting the need for more accurate climate modeling. Radiocarbon analysis from nuclear bomb tests in the 1960s indicates that existing Earth system models might be underestimating how much carbon terrestrial vegetation and soils absorb. However, according to the researchers, this carbon storage is more temporary than once believed. This implies that man-made carbon dioxide may not remain in the terrestrial biosphere as long as current models suggest.