Atmospheric gas. Annual report, August 1, 1992--July 31, 1993

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This proposal requests support for a third year of funding to complete a modelling study of processes controlling the distribution and waters at an ocean location with detailed background measurements of biological physical properties. We determined concentrations of the gases O{sub 2}, Ar, N{sub 2}, and the stable isotope ratio ({sup 18}O/{sup 16}O) of molecular oxygen in surface waters at Station ALOHA in conjunction with the Global Ocean Flux Study (GOFS) Hawaiian Ocean Time-series project during the years 1989--90 and 1992--93, the latter currently being completed. Chemical tracers have been incorporated into an existing ocean mixed-layer model to simulate the … continued below

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14 p.

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Schudlich, R. & Emerson, S. December 31, 1993.

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  • University of Washington
    Publisher Info: Washington Univ., Seattle, WA (United States)
    Place of Publication: Seattle, Washington

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Description

This proposal requests support for a third year of funding to complete a modelling study of processes controlling the distribution and waters at an ocean location with detailed background measurements of biological physical properties. We determined concentrations of the gases O{sub 2}, Ar, N{sub 2}, and the stable isotope ratio ({sup 18}O/{sup 16}O) of molecular oxygen in surface waters at Station ALOHA in conjunction with the Global Ocean Flux Study (GOFS) Hawaiian Ocean Time-series project during the years 1989--90 and 1992--93, the latter currently being completed. Chemical tracers have been incorporated into an existing ocean mixed-layer model to simulate the physical processes controlling the distribution and seasonal cycle of dissolved gases in the upper ocean. The broad background of concurrent chemical, physical, and biological measurements at station ALOHA provides enough redundancy of ``ground truth`` to assess the model`s accuracy. Biological oxygen production estimated from modeled chemical tracers agrees with estimates based on measurements of carbon fluxes into the deep ocean and nitrate fluxes into the upper ocean during 1989--90, verifying for the first time the utility of chemical tracers for determining biological fluxes in the ocean. The results suggest that in the euphoric zone the net biological O{sub 2} production and CO{sub 2} consumption is 4.5 moles m{sup {minus}2}yr{sup {minus}1}. We propose to continue this project an additional year to incorporate isotope data into the simulation and to analyze the 1992--93 data.

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14 p.

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OSTI as DE94007439; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov

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  • Other Information: PBD: [1993]

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  • December 31, 1993

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  • Nov. 3, 2018, 11:47 a.m.

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  • Nov. 19, 2018, 5:08 p.m.

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Schudlich, R. & Emerson, S. Atmospheric gas. Annual report, August 1, 1992--July 31, 1993, report, December 31, 1993; Seattle, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1319390/: accessed July 29, 2021), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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