New Zealand Ocean Acidification data

Ocean acidification conditions around the New Zealand coast are being measured to establish baseline conditions and to quantify future change. The NZOA-ON is a network of coastal sites around the country, a mix of pristine and urban sites, and sites which are of particular interest to regional councils, the aquaculture and fishing industries, and sites of scientific interest. This network is linked into the Global Ocean Acidification Observing Network (GOA-ON). Water samples are taken fortnightly and analysed for acidity parameters - alkalinity and total dissolved inorganic carbon. We then calculate pHT, pCO2, carbonate ion concentration, and saturation states. SeaFET pH sensors are deployed for 4-5 months at each site, and are moved from site to site to help determine short term variability at each location. Additional parameters are measured at the Dunedin and Firth of Thames sites, so that these sites meet the extra requirements of the Global Ocean Acidification Observing Network (GOA-ON).

More information can be found here.

If you need other data or licence arrangements, please lodge a request through data enquiries.