Scientists Were Wrong: Plants Absorb 31% More CO2 Than Previously Thought
New research shows plants absorb 31% more CO2 than previously estimated, raising the global GPP to 157 petagrams per year. Using carbonyl sulfide as a proxy for photosynthesis, this study highlights tropical rainforests’ critical role as carbon sinks and stresses the importance of accurate photosynthesis modeling for climate predictions.
A new assessment by scientists reveals that plants worldwide are absorbing about 31% more carbon dioxide than previously believed. Published in the journal Nature, this research is expected to enhance Earth system models used to forecast climate trends and underscores the critical role of natural carbon sequestration in mitigating greenhouse gas emissions.
The amount of CO2 removed from the atmosphere via photosynthesis from land plants is known as Terrestrial Gross Primary Production, or GPP. It represents the largest carbon exchange between land and atmosphere on the planet. GPP is typically cited in petagrams of carbon per year. One petagram equals 1 billion metric tons, which is roughly the amount of CO2 emitted each year from 238 million gas-powered passenger vehicles.