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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

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].
Date: June 29, 1993
Creator: Takahashi, T.; Goddard, J. G.; Chipman, D. W. & Rubin, S. I.
Partner: UNT Libraries Government Documents Department

Measurements of carbon dioxide in the Southern Ocean along the WOCE S-4 section

Description: During the fist year of this two-year grant, we have completed the data acquisition phase at sea along the WOCE-S4 section located along 67{degree}S between 73{degree}W and 172{degree}E in the Pacific sector of the Southern Ocean. The expedition was carried out aboard the Russian Research Ship Akademik IOFFE'' in the period February 14 through April 6, 1992. The total CO{sub 2} concentration and pCO{sub 2} in a total of about 1290 water samples were determined using a coulometer for total CO{sub 2} and an equilibrator/gas chromatograph system for pCO{sub 2}. Surface water samples were analyzed at all the 112 hydrographic stations occupied. Complete or partial profiles were obtained at 58 stations. In addition, a total of 172 determinations were made at sea for 62 bottles of the Standard Reference Solution.
Date: August 1, 1992
Creator: Chipman, D. W.; Rubin, S. I. & Takahashi, T.
Partner: UNT Libraries Government Documents Department

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. Progress report, [January 1, 1993--December 31, 1993]

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}.
Date: June 29, 1993
Creator: Takahashi, T.; Goddard, J. G.; Chipman, D. W. & Rubin, S. I.
Partner: UNT Libraries Government Documents Department

Measurements of carbon dioxide in the Southern Ocean along the WOCE S-4 section. Annual progress report

Description: During the fist year of this two-year grant, we have completed the data acquisition phase at sea along the WOCE-S4 section located along 67{degree}S between 73{degree}W and 172{degree}E in the Pacific sector of the Southern Ocean. The expedition was carried out aboard the Russian Research Ship ``Akademik IOFFE`` in the period February 14 through April 6, 1992. The total CO{sub 2} concentration and pCO{sub 2} in a total of about 1290 water samples were determined using a coulometer for total CO{sub 2} and an equilibrator/gas chromatograph system for pCO{sub 2}. Surface water samples were analyzed at all the 112 hydrographic stations occupied. Complete or partial profiles were obtained at 58 stations. In addition, a total of 172 determinations were made at sea for 62 bottles of the Standard Reference Solution.
Date: August 1, 1992
Creator: Chipman, D. W.; Rubin, S. I. & Takahashi, T.
Partner: UNT Libraries Government Documents Department

Seasonal study of carbon dioxide in the southern extreme of the pacific sector, Antarctic Ocean. Progress report

Description: This report describes the progress made during the six-month period between December 1, 1993, when this grant was awarded, and May 1, 1994. The major aim of this investigation is to measure the distribution of the total CO{sub 2} concentration and pCO{sub 2} in seawater in the Pacific sector of the extreme Southern Ocean as far south as 78{degrees}S. The areas investigated include the continental shelf areas in the Ross, Amundsen and Bellingshausen Seas ad the off-shore deep water areas as far north as 67{degrees}S. The measurements were made aboard the R/VIB Nathaniel B. Palmer between February 14, 1994 and April 5, 1994, and the preliminary results are briefly described in this report. This expedition constitutes the first of a pair expeditions. The first is designed investigate oceanic CO{sub 2} sink/source conditions during the austral summer The second expedition, which is designed for the following winter, has been scheduled for September, 1994.
Date: May 5, 1994
Creator: Takahashi, Taro; Goddard, J. G.; Rubin, S. I. & Breger, D.
Partner: UNT Libraries Government Documents Department