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dc.contributor.authorStanley, Rachel H. R.
dc.contributor.authorJenkins, William J.
dc.contributor.authorDoney, Scott C.
dc.date.accessioned2007-02-09T17:15:48Z
dc.date.available2007-02-09T17:15:48Z
dc.date.issued2006-03
dc.identifier.citationJournal of Marine Research 64 (2006): 267-295en
dc.identifier.urihttp://hdl.handle.net/1912/1499
dc.descriptionAuthor Posting. © Sears Foundation for Marine Research, 2006. This article is posted here by permission of Sears Foundation for Marine Research for personal use, not for redistribution. The definitive version was published in Journal of Marine Research 64 (2006): 267-295, doi:10.1357/002224006777606452.en
dc.description.abstractA multi-year time-series of measurements of five noble gases (He, Ne, Ar, Kr, and Xe) at a subtropical ocean location may allow quantification of air-sea gas exchange parameters with tighter constraints than is currently available by other methods. We have demonstrated this using a one-dimensional upper ocean model forced by 6-hourly NCEP reanalysis winds and heat flux for the Sargasso Sea near Bermuda. We performed ensemble model runs to characterize the response of the modeled noble gas saturation anomalies to a range of air-sea gas exchange parameters. We then used inverse calculations to quantify the sensitivity of the parameters to hypothetical observations. These calculations show that with currently achievable measurement accuracies, noble gas concentrations in the Sargasso Sea could be used to constrain the magnitude of equilibrium gas exchange to ±11%, the magnitude of the total air injection flux to ±14%, and the magnitude of net photosynthetic oxygen production to ±1.5 mol O2 m−2 y−1. Additionally, we can use noble gases to quantify the relative contributions of bubbles that are partially dissolved to bubbles that are completely dissolved. These constraints are based on idealized assumptions and may not fully account for some of the uncertainties in the meteorological data, in lateral transport processes, and in the solubilities of the noble gases. As a limited demonstration, we applied this approach to a time series of He, Ne, Ar, and O2 measurements from the Sargasso Sea from 1985 to 1988 (data from Spitzer, 1989). Due to the limited number of gases measured and the lower accuracy of those measurements, the constraints in this example application are weaker than could be achieved with current capabilities.en
dc.description.sponsorshipThis work was supported by the National Science Foundation Chemical Oceanography program (OCE-0221247) and by the Department of Defense (graduate fellowship to RHRS).en
dc.format.extent1414370 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.publisherSears Foundation for Marine Researchen
dc.relation.urihttps://doi.org/10.1357/002224006777606452
dc.titleQuantifying seasonal air-sea gas exchange processes using noble gas time-series : a design experimenten
dc.typeArticleen
dc.identifier.doi10.1357/002224006777606452


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