Revised estimates of ocean-atmosphere CO2 flux are consistent with ocean carbon inventory
dc.contributor.author | Watson, AJ | |
dc.contributor.author | Schuster, U | |
dc.contributor.author | Shutler, JD | |
dc.contributor.author | Holding, T | |
dc.contributor.author | Ashton, IGC | |
dc.contributor.author | Landschützer, P | |
dc.contributor.author | Woolf, DK | |
dc.contributor.author | Goddijn-Murphy, L | |
dc.date.accessioned | 2020-09-07T09:47:39Z | |
dc.date.issued | 2020-09-04 | |
dc.description.abstract | The ocean is a sink for ~25% of the atmospheric CO2 emitted by human activities, an amount in excess of 2 petagrams of carbon per year (PgC yr−1 ). Time-resolved estimates of global ocean-atmosphere CO2 flux provide an important constraint on the global carbon budget. However, previous estimates of this flux, derived from surface ocean CO2 concentrations, have not corrected the data for temperature gradients between the surface and sampling at a few meters depth, or for the effect of the cool ocean surface skin. Here we calculate a time history of ocean-atmosphere CO2 fluxes from 1992 to 2018, corrected for these effects. These increase the calculated net flux into the oceans by 0.8–0.9 PgC yr−1 , at times doubling uncorrected values. We estimate uncertainties using multiple interpolation methods, finding convergent results for fluxes globally after 2000, or over the Northern Hemisphere throughout the period. Our corrections reconcile surface uptake with independent estimates of the increase in ocean CO2 inventory, and suggest most ocean models underestimate uptake. | en_GB |
dc.description.sponsorship | European Space Agency | en_GB |
dc.description.sponsorship | European Commission | en_GB |
dc.description.sponsorship | BONUS Secretariat (EEIG) | en_GB |
dc.identifier.citation | Vol. 11, 4422 | en_GB |
dc.identifier.doi | 10.1038/s41467-020-18203-3 | |
dc.identifier.grantnumber | BB/M019748/1 | en_GB |
dc.identifier.grantnumber | RG160962 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/122738 | |
dc.language.iso | en | en_GB |
dc.publisher | Nature Research | en_GB |
dc.rights | © The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/. | en_GB |
dc.title | Revised estimates of ocean-atmosphere CO2 flux are consistent with ocean carbon inventory | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2020-09-07T09:47:39Z | |
exeter.article-number | 4422 | en_GB |
dc.description | This is the final version. Available from the publisher via the DOI in this record. | en_GB |
dc.identifier.eissn | 2041-1723 | |
dc.identifier.journal | Nature Communications | en_GB |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2020 | |
exeter.funder | ::European Space Agency | en_GB |
exeter.funder | ::European Commission | en_GB |
exeter.funder | ::BONUS Secretariat (EEIG) | en_GB |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2020-09-04 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2020-09-07T09:43:34Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2020-09-07T09:47:44Z | |
refterms.panel | B | en_GB |
refterms.depositException | publishedGoldOA | |
refterms.depositExceptionExplanation | https://doi.org/10.1038/s41467-020-18203-3 |
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the copyright holder. To view a copy of this license, visit http://creativecommons.org/
licenses/by/4.0/.