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dc.contributor.authorPalevsky, Hilary I.  Concept link
dc.contributor.authorDoney, Scott C.  Concept link
dc.date.accessioned2018-06-29T15:53:33Z
dc.date.available2018-10-23T08:44:19Z
dc.date.issued2018-05-05
dc.identifier.citationGeophysical Research Letters 45 (2018): 4171-4179en_US
dc.identifier.urihttps://hdl.handle.net/1912/10431
dc.descriptionAuthor Posting. © American Geophysical Union, 2018. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 45 (2018): 4171-4179, doi:10.1029/2017GL076498.en_US
dc.description.abstractEstimated rates and efficiency of ocean carbon export flux are sensitive to differences in the depth horizons used to define export, which often vary across methodological approaches. We evaluate sinking particulate organic carbon (POC) flux rates and efficiency (e‐ratios) in a global earth system model, using a range of commonly used depth horizons: the seasonal mixed layer depth, the particle compensation depth, the base of the euphotic zone, a fixed depth horizon of 100 m, and the maximum annual mixed layer depth. Within this single dynamically consistent model framework, global POC flux rates vary by 30% and global e‐ratios by 21% across different depth horizon choices. Zonal variability in POC flux and e‐ratio also depends on the export depth horizon due to pronounced influence of deep winter mixing in subpolar regions. Efforts to reconcile conflicting estimates of export need to account for these systematic discrepancies created by differing depth horizon choices.en_US
dc.description.sponsorshipWoods Hole Oceanographic Institution (WHOI); National Science Foundation Grant Number: OCE‐1434000en_US
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.urihttps://doi.org/10.1029/2017GL076498
dc.subjectCarbonen_US
dc.subjectExporten_US
dc.subjectOceanen_US
dc.titleHow choice of depth horizon influences the estimated spatial patterns and global magnitude of ocean carbon export fluxen_US
dc.typeArticleen_US
dc.description.embargo2018-10-23en_US
dc.identifier.doi10.1029/2017GL076498


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