The abstract is read at the publisher; the summary is JClub's.
The ocean carbon sink strengthened from 1990–2019, increasing by 0.63 ± 0.19 Pg C year⁻¹ decade⁻¹ (mean 2.8 ± 0.4 Pg C year⁻¹) based on atmospheric O₂ and CO₂.
- Why it matters: Quantifying how land and ocean CO₂ uptake has changed over time is hard because observations are sparse, limiting confidence in climate-relevant sink trends.
- What they did: Using 30+ years of atmospheric oxygen and CO₂ measurements, the study inferred decadal changes in ocean and net land carbon sinks from 1990 to 2019.
- The result: The net land sink shows no robust trend (mean 1.0 ± 0.5 Pg C year⁻¹) despite strong decadal variability, challenging many process-based model simulations of both sinks.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.