Measurements of the total CO[sub 2] concentration and partial pressure of CO[sub 2] in seawater during WOCE expeditions in the South Pacific Ocean

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During the first year of the grant, we participated in three WOCE expeditions (a total of 152 days at sea) in the South Pacific Ocean, and the field phase of the proposed investigation has been successfully completed. The total CO[sub 2] concentration and pCO[sub 2] were determined at sea in 4419 water samples collected at 422 stations. On the basis of the shipboard analyses of SIO Reference Solutions for CO, and a comparison with the results of previous expeditions, the overall precision of our total CO[sub 2] determinations is estimated to be about [plus minus]2 uM/kg. The deep water data ... continued below

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Pages: (14 p)

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Takahashi, T.; Goddard, J. G.; Chipman, D. W. & Rubin, S. I. June 29, 1993.

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  • Lamont-Doherty Earth Observatory
    Publisher Info: Columbia Univ., Lamont-Doherty Earth Observatory, Palisades, NY (United States)
    Place of Publication: Palisades, New York

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Description

During the first year of the grant, we participated in three WOCE expeditions (a total of 152 days at sea) in the South Pacific Ocean, and the field phase of the proposed investigation has been successfully completed. The total CO[sub 2] concentration and pCO[sub 2] were determined at sea in 4419 water samples collected at 422 stations. On the basis of the shipboard analyses of SIO Reference Solutions for CO, and a comparison with the results of previous expeditions, the overall precision of our total CO[sub 2] determinations is estimated to be about [plus minus]2 uM/kg. The deep water data indicate that there is a CO[sub 2] maximum centered about 2600 meters deep. This appears to represent a southward return flow from the North Pacific. The magnitude and distribution of the CO, maximum observed along the 135.0[degrees]W meridian differ from those observed along the 150.5[degrees]W meridian due to Tuamotu Archipelago, a topographic high which interferes with the southward return flow. The surface water pCO[sub 2] data indicate that the South Pacific sub-tropical gyre water located between about 15[degrees]S and 50[degrees]S is a sink for atmospheric CO[sub 2].

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Pages: (14 p)

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  • Other: DE93018158
  • Report No.: DOE/ER/61539-1
  • Grant Number: FG02-93ER61539
  • DOI: 10.2172/6181394 | External Link
  • Office of Scientific & Technical Information Report Number: 6181394
  • Archival Resource Key: ark:/67531/metadc1104686

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  • June 29, 1993

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

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  • April 27, 2018, 1:57 p.m.

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Takahashi, T.; Goddard, J. G.; Chipman, D. W. & Rubin, S. I. Measurements of the total CO[sub 2] concentration and partial pressure of CO[sub 2] in seawater during WOCE expeditions in the South Pacific Ocean, report, June 29, 1993; Palisades, New York. (https://digital.library.unt.edu/ark:/67531/metadc1104686/: accessed March 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.