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dc.contributor.authorLebehot, Alice
dc.contributor.authorHalloran, Paul R.
dc.contributor.authorWatson, Andrew J.
dc.contributor.authorMcNeall, Doug
dc.contributor.authorFord, David A
dc.contributor.authorLandschützer, Peter
dc.contributor.authorLauvset, Siv Kari
dc.contributor.authorSchuster, Ute
dc.PublishedLebehot, Halloran PR, Watson AJ, McNeall D, Ford DA, Landschützer P, Lauvset SK, Schuster U. Reconciling Observation and Model Trends in North Atlantic Surface CO2. Global Biogeochemical Cycles. 2019;33(10):1204-1222eng
dc.description.abstractThe North Atlantic Ocean is a region of intense uptake of atmospheric CO2. To assess how this CO2 sink has evolved over recent decades, various approaches have been used to estimate basin‐wide uptake from the irregularly sampled in situ CO2 observations. Until now, the lack of robust uncertainties associated with observation‐based gap‐filling methods required to produce these estimates has limited the capacity to validate climate model simulated surface ocean CO2 concentrations. After robustly quantifying basin‐wide and annually varying interpolation uncertainties using both observational and model data, we show that the North Atlantic surface ocean fugacity of CO2 (f CO2−ocean) increased at a significantly slower rate than that simulated by the latest generation of Earth System Models during the period 1992–2014. We further show, with initialized model simulations, that the inability of these models to capture the observed trend in surface f CO2−ocean is primarily due to biases in the models' ocean biogeochemistry. Our results imply that current projections may underestimate the contribution of the North Atlantic to mitigating increasing future atmospheric CO2 concentrations.en_US
dc.rightsAttribution CC BYeng
dc.titleReconciling Observation and Model Trends in North Atlantic Surface CO2en_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2019 The Author(s)en_US
dc.source.journalGlobal Biogeochemical Cycles

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