Ocean acidification, 1998–2016

The pH of New Zealand subantarctic waters is calculated from pCO2 (dissolved carbon dioxide) and alkalinity measurements using refitted Mehrbach constants (see Mehrbach et al, 1973; Dickson & Millero, 1987), and in-situ temperature taken from the Munida time-series transect off the Otago coast. Measurements of pCO2 are taken every two months. The Munida transect, in the subantarctic waters off Otago, is the Southern Hemisphere’s longest-running record of pH measurements (NIWA, 2015). More information on this dataset and how it relates to our Environmental reporting indicators and topics can be found in the attached data quality pdf.

Data and Resources

Additional Info

Field Value
Theme
Author Ministry for the Environment
Maintainer Ministry for the Environment
Maintainer Email Ministry for the Environment
Source https://data.mfe.govt.nz/table/89461-ocean-acidification-19982016/
Created 2017-10-14T01:35:37.947749Z
Date modified 2017-10-18T20:24:41.345584Z
Language English
Spatial
Source Identifier https://data.mfe.govt.nz/table/89461-ocean-acidification-19982016/
Record created May 3, 2018, Last Updated May 3, 2018