Reduction in Earth's carbon budget imbalance.

ABSTRACT: The Global Carbon Project (GCP) compiles an updated global carbon budget each year, synthesizing state‑of‑the‑art estimates of anthropogenic CO₂ emissions, land and ocean sinks, and the atmospheric CO₂ growth rate. The residual between these terms, referred to as the global carbon budget imbalance, reflects the aggregate inaccuracies of the individual component estimates. Growth rates derived from marine boundary layer (MBL) surface flask mixing ratio observations are assumed to be highly accurate. Hence, land and ocean sink estimates from process models are viewed as the primary source of the imbalance. Here we show that substantial discrepancies arise when marine boundary layer growth rate estimates are used to represent the whole atmosphere. Correcting for this dis

SUBMITTER: Pandey S 

PROVIDER: S-EPMC12289909 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature