dc.contributor.author | Nicholson, S.-A. | |
dc.contributor.author | Whitt, D. B. | |
dc.contributor.author | Fer, Ilker | |
dc.contributor.author | du Plessis, M | |
dc.contributor.author | Lebéhot, A. D. | |
dc.contributor.author | Swart, S. | |
dc.contributor.author | Sutton, A. J. | |
dc.contributor.author | Monteiro, M. S. | |
dc.date.accessioned | 2022-02-02T14:02:52Z | |
dc.date.available | 2022-02-02T14:02:52Z | |
dc.date.created | 2022-01-25T15:52:50Z | |
dc.date.issued | 2022 | |
dc.identifier.issn | 2041-1723 | |
dc.identifier.uri | https://hdl.handle.net/11250/2976705 | |
dc.description.abstract | The subpolar Southern Ocean is a critical region where CO2 outgassing influences the global mean air-sea CO2 flux (FCO2). However, the processes controlling the outgassing remain elusive. We show, using a multi-glider dataset combining FCO2 and ocean turbulence, that the air-sea gradient of CO2 (∆pCO2) is modulated by synoptic storm-driven ocean variability (20 µatm, 1–10 days) through two processes. Ekman transport explains 60% of the variability, and entrainment drives strong episodic CO2 outgassing events of 2–4 mol m−2 yr−1. Extrapolation across the subpolar Southern Ocean using a process model shows how ocean fronts spatially modulate synoptic variability in ∆pCO2 (6 µatm2 average) and how spatial variations in stratification influence synoptic entrainment of deeper carbon into the mixed layer (3.5 mol m−2 yr−1 average). These results not only constrain aliased-driven uncertainties in FCO2 but also the effects of synoptic variability on slower seasonal or longer ocean physics-carbon dynamics. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Nature Research | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Storms drive outgassing of CO2 in the subpolar Southern Ocean | en_US |
dc.type | Journal article | en_US |
dc.type | Peer reviewed | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | Copyright The Author(s) 2022 | en_US |
dc.source.articlenumber | 158 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.doi | 10.1038/s41467-021-27780-w | |
dc.identifier.cristin | 1989746 | |
dc.source.journal | Nature Communications | en_US |
dc.relation.project | Norges forskningsråd: 294396 | en_US |
dc.identifier.citation | Nature Communications. 2022, 13, 158. | en_US |
dc.source.volume | 13 | en_US |