Consistency and synthesis of Pacific Ocean CO2 survey data

Lamb, Marilyn F.; Sabine, C. L.; Feely, Richard A.; Wanninkhof, Rik; Key, Robert M.; Johnson, Gregory C.; Millero, Frank J.; Lee, Kitack; Peng, Tsung‐Hung; Kozyr, A.; Bullister, John L.; Greeley, Dana; Byrne, Robert H.; Chipman, D.W.; Dickson, Andrew G.; Goyet, Catherine; Guenther, Peter R.; Ishii, Masayoshi; Johnson, K.M.; Keeling, Charles D.; Ono, Tsueno; Shitashima, Kiminori; Tilbrook, Bronte; Takahashi, Taro; Wallace, D. W. R.; Watanabe, Yutaka; Winn, Christopher D.; Wong, C. S.

doi:10.1016/s0967-0645(01)00093-5

Cited by 67 publications

(59 citation statements)

References 39 publications

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“…1, Table 1). Such comparisons have been made for oceanic carbon parameters in the Indian Ocean , Sabine et al 1999) and the Pacific Ocean (Lamb et al 2001). Similar comparisons are under way for nutrient data (Gordon et al 1998) and CFC data (Smethie, personal communication).…”

Section: Introductionmentioning

confidence: 78%

“…The analysis of the large-scale data quality of inorganic carbon system parameters for the Atlantic syntheses data set followed the procedures outlined in Lamb et al (2001) and Feely et al (1999) with the objective of determining the consistency of inorganic carbon data among the different cruise data. The focus was on the DIC and TAlk state variables used in the calculation of the anthropogenic CO 2 inventory and for studies of biogeochemical carbon cycling.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Inorganic Carbon System Parameters Measured in the Atlantic Ocean from 1990 to 1998 and Recommended Adjustments

Wanninkhof¹

2003

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Section: Introductionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Comparison of Inorganic Carbon System Parameters Measured in the Atlantic Ocean from 1990 to 1998 and Recommended Adjustments

Wanninkhof¹

2003

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“…The chemical data (O 2 , DIC, pCO 2 , and CFCs) were analyzed with similar instruments and often by the same groups for the different time periods, assuring consistency between measurements. Much of the data have been compared for consistency in previous papers (Wanninkhof et al, 2003;Lamb et al, 2002;van Heuven et al, 2011;Gruber et al, 1996;Gouretski and Jancke, 2001) and in community intercomparison exercises such as the Global Ocean Data Analysis Project, GLODAP , Pacific Interior Carbon Data Synthesis, PACIFICA (Ishii et al, in press), and Carbon in the Atlantic, CARINA . Appendix B provides details on these data and the corrections applied.…”

Section: Data Treatmentmentioning

confidence: 99%

“…This method does not provide an absolute accuracy estimate, as it is dependent on the dissociation constants used and the assumption of the contributions of other acids and bases to total alkalinity. To overcome the limitation of possible biases in the data, this study exclusively used data from the authors of this paper that used similar approaches, i.e., whose gas standards are traceable to the same primary reference and whose values are similar in crossover analyses (Lamb et al, 2002 looked closely at the datasets and recommended adjustments to different biogeochemical parameters based on contextual data intercomparison. These include comparing deep-water data assuming no change in properties over time, and large-scale multiple regression techniques.…”

Section: Acknowledgmentsmentioning

confidence: 99%

Changes in deep-water CO2 concentrations over the last several decades determined from discrete pCO2measurements

Wanninkhof

Park

Takahashi

et al. 2013

Deep Sea Research Part I: Oceanographic Research Papers

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a b s t r a c tDetection and attribution of hydrographic and biogeochemical changes in the deep ocean are challenging due to the small magnitude of their signals and to limitations in the accuracy of available data. However, there are indications that anthropogenic and climate change signals are starting to manifest at depth. The deep ocean below 2000 m comprises about 50% of the total ocean volume, and changes in the deep ocean should be followed over time to accurately assess the partitioning of anthropogenic carbon dioxide (CO 2 ) between the ocean, terrestrial biosphere, and atmosphere. Here we determine the changes in the interior deep-water inorganic carbon content by a novel means that uses the partial pressure of CO 2 measured at 20 1C, pCO 2 (20), along three meridional transects in the Atlantic and Pacific oceans. These changes are measured on decadal time scales using observations from the World Ocean Circulation Experiment (WOCE)/World Hydrographic Program (WHP) of the 1980s and 1990s and the CLIVAR/CO 2 Repeat Hydrography Program of the past decade. The pCO 2 (20) values show a consistent increase in deep water over the time period. Changes in total dissolved inorganic carbon (DIC) content in the deep interior are not significant or consistent, as most of the signal is below the level of analytical uncertainty. Using an approximate relationship between pCO 2 (20) and DIC change, we infer DIC changes that are at the margin of detectability. However, when integrated on the basin scale, the increases range from 8-40% of the total specific water column changes over the past several decades. Patterns in chlorofluorocarbons (CFCs), along with output from an ocean model, suggest that the changes in pCO 2 (20) and DIC are of anthropogenic origin.Published by Elsevier Ltd.

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“…This is essential if we really want to get a precise database, especially in the case the data are obtained over a long time span. Lamb et al (2002) also assessed the internal consistency of a North Pacific WOCE carbonate data set based on the observation results in deep waters, and found that there is sometimes an unexpected offset between WOCE cruises, even if both cruise are judged to have no offset based on the SIO-CRM results.…”

Section: Uncertainty Assessment Of Compiled Dic Database and Interannmentioning

confidence: 99%

Seasonal and Interannual Variation of DIC in Surface Mixed Layer in the Oyashio Region: A Climatological View

Ono¹,

Kasai²,

Midorikawa

et al. 2005

J Oceanogr

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Consistency and synthesis of Pacific Ocean CO2 survey data

Cited by 67 publications

References 39 publications

Comparison of Inorganic Carbon System Parameters Measured in the Atlantic Ocean from 1990 to 1998 and Recommended Adjustments

Comparison of Inorganic Carbon System Parameters Measured in the Atlantic Ocean from 1990 to 1998 and Recommended Adjustments

Changes in deep-water CO2 concentrations over the last several decades determined from discrete pCO2measurements

Seasonal and Interannual Variation of DIC in Surface Mixed Layer in the Oyashio Region: A Climatological View

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