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dc.contributor.authorPalevsky, Hilary I.  Concept link
dc.contributor.authorQuay, Paul D.  Concept link
dc.date.accessioned2017-04-04T19:56:31Z
dc.date.available2017-07-21T08:43:58Z
dc.date.issued2017-01-21
dc.identifier.citationGlobal Biogeochemical Cycles 31 (2017): 81–95en_US
dc.identifier.urihttps://hdl.handle.net/1912/8870
dc.descriptionAuthor Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Global Biogeochemical Cycles 31 (2017): 81–95, doi:10.1002/2016GB005527.en_US
dc.description.abstractWe evaluate the influences of biological carbon export, physical circulation, and temperature-driven solubility changes on air-sea CO2 flux across the North Pacific basin (35°N–50°N, 142°E–125°W) throughout the full annual cycle by constructing mixed layer budgets for dissolved inorganic carbon (DIC) and pCO2, determined on 15 container ship transects between Hong Kong and Long Beach, CA, from 2008 to 2012. Annual air-sea CO2 flux is greatest in the western North Pacific and decreases eastward across the basin (2.7 ± 0.9 mol C m−2 yr−1 west of 170°E, as compared to 2.1 ± 0.3 mol C m−2 yr−1 east of 160°W). East of 160°W, DIC removal by annual net community production (NCP) more than fully offsets the DIC increase due to air-sea CO2 flux. However, in the region west of 170°E influenced by deep winter mixing, annual NCP only offsets ~20% of the DIC increase due to air-sea CO2 flux, requiring significant DIC removal by geostrophic advection. Temperature-driven solubility changes have no net influence on pCO2 and account for <25% of annual CO2 uptake. The seasonal timing of NCP strongly affects its influence on air-sea CO2 flux. Biological carbon export from the mixed layer has a stronger influence on pCO2 in summer when mixed layers are shallow, but changes in pCO2 have a stronger influence on air-sea CO2 flux in winter when high wind speeds drive more vigorous gas exchange. Thus, it is necessary to determine the seasonal timing as well as the annual magnitude of NCP to determine its influence on ocean carbon uptake.en_US
dc.description.sponsorshipNDSEG Fellowship from the Office of Naval Research; NSF Graduate Research Fellowship; NSF Ocean Sciences Grant Numbers: 0628663, 1259055; NOAA Climate Program Office Grant Number: A10OAR4310088en_US
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.urihttps://doi.org/10.1002/2016GB005527
dc.subjectCarbon cycleen_US
dc.subjectNorth Pacificen_US
dc.subjectBiological pumpen_US
dc.titleInfluence of biological carbon export on ocean carbon uptake over the annual cycle across the North Pacific Oceanen_US
dc.typeArticleen_US
dc.description.embargo2017-07-21en_US
dc.identifier.doi10.1002/2016GB005527


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