ArticlePhilosophical transactions. Series A, Mathematical, physical, and engineering sciences2023
Sparse observations induce large biases in estimates of the global ocean CO
Article in Philosophical transactions. Series A, Mathematical, physical, and engineering sciences, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Improved air-sea COScience advances · 2026Article
- Asymmetric bubble-mediated gas transfer enhances global ocean CONature communications · 2025Article
- Substantially underestimated winter COScience advances · 2025Article
- New Capability in Autonomous Ocean Carbon Observations Using the Autosub Long-Range AUV Equipped with Novel pH and Total Alkalinity Sensors.Environmental science & technology · 2025Article
- Competing effects of wind and buoyancy forcing on ocean oxygen trends in recent decades.Nature communications · 2024Article
- The importance of adding unbiased Argo observations to the ocean carbon observing system.Scientific reports · 2024Article
- Direct observational evidence of strong COScience advances · 2024Article
- A detectable change in the air-sea COScientific reports · 2024Article
- Climate-driven variability of the Southern Ocean COPhilosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2023Article
- Sparse observations induce large biases in estimates of the global ocean COPhilosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2023Article
- Heat and carbon uptake in the Southern Ocean: the state of the art and future priorities.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2023Article
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6 authors.
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Abstract
Estimates of ocean [Formula: see text] uptake from global ocean biogeochemistry models and [Formula: see text]-based data products differ substantially, especially in high latitudes and in the trend of the [Formula: see text] uptake since 2000. Here, we assess the effect of data sparsity on two [Formula: see text]-based estimates by subsampling output from a global ocean biogeochemistry model. The estimates of the ocean [Formula: see text] uptake are improved from a sampling scheme that mimics present-day sampling to an ideal sampling scheme with 1000 evenly distributed sites. In particular, insufficient sampling has given rise to strong biases in the trend of the ocean carbon sink in the [Formula: see text] products. The overestimation of the [Formula: see text] flux trend by 20-35% globally and 50-130% in the Southern Ocean with the present-day sampling is reduced to less than [Formula: see text] with the ideal sampling scheme. A substantial overestimation of the decadal variability of the Southern Ocean carbon sink occurs in one product and appears related to a skewed data distribution in [Formula: see text] space. With the ideal sampling, the bias in the mean [Formula: see text] flux is reduced from 9-12% to 2-9% globally and from 14-26% to 5-17% in the Southern Ocean. On top of that, discrepancies of about [Formula: see text] (15%) persist due to uncertainties in the gas-exchange calculation. This article is part of a discussion meeting issue 'Heat and carbon uptake in the Southern Ocean: the state of the art and future priorities'.
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