Simultaneous mooring-based measurements of seawater CO{sub 2} and O{sub 2} off Cape Hatteras, North Carolina

DeGrandpre, M D; Hammar, T R; Wallace, D W.R.; Wirick, C D

doi:10.4319/lo.1997.42.1.0021

Title: Simultaneous mooring-based measurements of seawater CO{sub 2} and O{sub 2} off Cape Hatteras, North Carolina

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Abstract

We deployed CO{sub 2} and O{sub 2} sensors on the US continental shelf off Cape Hatteras, North Carolina, during late summer 1994. A continuous 32-d gas record was obtained at 20 m in 25 m of water, below the thermocline for most of the period. Analysis of the correlation between CO{sub 2} and O{sub 2} indicates that biological and advective processes dominated the gas variability, with small or insignificant fluxes due to air-sea exchange, vertical eddy diffusion, and carbonate dissolution or formation. The observed O{sub 2}; CO{sub 2} correlation was 1.39, within the range predicted for the photosynthetic quotient. Photosynthesis and respiration appeared to be tightly coupled, resulting in no net community production in these waters during the late summer. It is evident from these results that the combination of moooring-based CO{sub 2} and O{sub 2} measurements will be a powerful tool for studying the marine carbon cycle. 33 refs., 6 figs., 1 tab.

Authors:

DeGrandpre, M D; Hammar, T R ^[1]; Wallace, D W.R.; Wirick, C D ^[2]

Woods Hole Oceanographic Institution, MA (United States)
Brookhaven National Lab., Upton, NY (United States)

Publication Date:: Wed Jan 01 00:00:00 EST 1997

Sponsoring Org.:: USDOE

OSTI Identifier:: 549043

Resource Type:: Journal Article

Journal Name:: Limnology and Oceanography

Additional Journal Information:: Journal Volume: 42; Journal Issue: 1; Other Information: PBD: Jan 1997

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; CARBON DIOXIDE; MONITORING; OXYGEN; PHOTOSYNTHESIS; CORRELATIONS; RESPIRATION; CARBON CYCLE; SEAWATER

Citation Formats


                    DeGrandpre, M D, Hammar, T R, Wallace, D W.R., and Wirick, C D. Simultaneous mooring-based measurements of seawater CO{sub 2} and O{sub 2} off Cape Hatteras, North Carolina.  United States: N. p., 1997. 
        Web.  doi:10.4319/lo.1997.42.1.0021.

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                    DeGrandpre, M D, Hammar, T R, Wallace, D W.R., & Wirick, C D. Simultaneous mooring-based measurements of seawater CO{sub 2} and O{sub 2} off Cape Hatteras, North Carolina.  United States.  https://doi.org/10.4319/lo.1997.42.1.0021

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                    DeGrandpre, M D, Hammar, T R, Wallace, D W.R., and Wirick, C D. 1997.  
        "Simultaneous mooring-based measurements of seawater CO{sub 2} and O{sub 2} off Cape Hatteras, North Carolina".  United States.  https://doi.org/10.4319/lo.1997.42.1.0021.

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@article{osti_549043,

  title        = {Simultaneous mooring-based measurements of seawater CO{sub 2} and O{sub 2} off Cape Hatteras, North Carolina},

  author       = {DeGrandpre, M D and Hammar, T R and Wallace, D W.R. and Wirick, C D},

  abstractNote = {We deployed CO{sub 2} and O{sub 2} sensors on the US continental shelf off Cape Hatteras, North Carolina, during late summer 1994. A continuous 32-d gas record was obtained at 20 m in 25 m of water, below the thermocline for most of the period. Analysis of the correlation between CO{sub 2} and O{sub 2} indicates that biological and advective processes dominated the gas variability, with small or insignificant fluxes due to air-sea exchange, vertical eddy diffusion, and carbonate dissolution or formation. The observed O{sub 2}; CO{sub 2} correlation was 1.39, within the range predicted for the photosynthetic quotient. Photosynthesis and respiration appeared to be tightly coupled, resulting in no net community production in these waters during the late summer. It is evident from these results that the combination of moooring-based CO{sub 2} and O{sub 2} measurements will be a powerful tool for studying the marine carbon cycle. 33 refs., 6 figs., 1 tab.},

  doi          = {10.4319/lo.1997.42.1.0021},

  url          = {https://www.osti.gov/biblio/549043},
  journal      = {Limnology and Oceanography},
number       = 1,

  volume       = 42,

  place        = {United States},

  year         = {Wed Jan 01 00:00:00 EST 1997},

  month        = {Wed Jan 01 00:00:00 EST 1997}

}

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