©2026 Biological and Chemical Oceanography Data Management Office.Duplicate samples were collected for total alkalinity on two cruises in 2023 aboard the R/V Mirai (MR23-06C and MR23-07) in order to compare two different methods of total alkalinity titrations: the open cell with non-linear least squares fitting and single step with spectrophotometric endpoint detection. Measurements of dissolved inorganic carbon and pH on the total scale were also made as quality control checks. GLODAPv2 hinted at a potential offset between laboratories in the Pacific Ocean. W...
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Version 2 (the current version) contains the following changes from version 1:
- Corrections to a small number of values where, rather than giving the average of two duplicates, the value of one replicate was given (Column 16, flags 6, for cruise MR23-07).
- The addition of column Final_pHt_for_Single_Step_method_TA.
49NZ20230825 (MR23-06C Arctic) hydrographic data and cruise report.
49NZ20231006 (P14) hydrographic data and cruise report
Woosley, R., Bruno, J. A., Neithardt, D. (2025). Open cell and single-step method for total alkalinity titrations from samples collected on R/V Mirai cruises MR23-06C and MR23-07 in the North Pacific and Western Arctic from September to November 2023. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2) Version Date 2025-07-29 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.957527.2 [access date]
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This dataset is licensed under Creative Commons Attribution 4.0.
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