[{"@context":"http:\/\/schema.org\/","@type":"Dataset","identifier":"https:\/\/doi.org\/10.17043\/oden-ryder-2019-ctd-bottle-ph-alkalinity-1","@id":"https:\/\/doi.org\/10.17043\/oden-ryder-2019-ctd-bottle-ph-alkalinity-1","name":"Seawater carbonate chemistry from CTD bottle samples during the Ryder 2019 expedition","description":"Depth profiles of seawater pH and total alkalinity (TA) from water samples collected during the Ryder 2019 Expedition from coastal waters along northwestern Greenland, from Thule in the south to Sherard Osborn Fjord in the north.\r\n\r\nA total of 479 water samples from 30 (out of 51) stations were analyzed for seawater pH and total alkalinity on board the Swedish icebreaker Oden, August-September 2019. The stations cover Nares Strait, southern Lincoln Sea, Sherard Osborn Fjord (where Ryder Glacier drains), and Petermann fjord (where Petermann Glacier drains). Seawater pH (total pH scale, 25 \u00b0C, in situ salinity) was determined spectrophotometrically using purified meta-cresol purple. Total alkalinity was determined by open-cell potentiometric titrations.\r\n\r\nSeawater pH and TA are two key variables of the marine carbonate system. From these observations, together with concurrent measurements of salinity, temperature, and pressure, the two other measureable variables of the marine carbonate system, i.e., dissolved inorganic carbon (DIC) and the partial pressure of carbon dioxide (pCO\u2082), can be calculated through thermodynamic models. Observations of any two of the four measureable variables of the the marine carbonate system are useful in assessing the seawater state with respect to, e.g., air-sea gas exchange, buffer capacity, and calcium carbonate mineral saturation.","url":"http:\/\/bolin.su.se\/data\/oden-ryder-2019-ctd-bottle-ph-alkalinity-1","keywords":["Marine","Marine chemistry","CTD","Carbonate system","Arctic Ocean","Ryder 2019 expedition","Icebreaker Oden","Earth science > Oceans"],"creator":{"@type":"Person","name":"Adam Ulfsbo, Christian Stranne, Johan Nilsson"},"citation":"Jakobsson M, Mayer LA, Farrell F, Ryder 2019 Scientific Party (2020) <a href=\"data\/oden-ryder-2019-expedition-4\/oden-ryder-2019-expedition-cruise-report-1.pdf\">Expedition report: SWEDARCTIC Ryder 2019<\/a>, Swedish Polar Research Secretariat, 455 pp, ISBN 978-91-519-5132-4","license":"https:\/\/opendatacommons.org\/licenses\/by\/","isAccessibleForFree":true,"includedInDataCatalog":{"@type":"DataCatalog","name":"Bolin Centre for Climate Research, Stockholm University","identifier":"https:\/\/bolin.su.se\/data\/","url":"https:\/\/bolin.su.se\/data\/"},"distribution":{"@type":"DataDownload","encodingFormat":"text\/plain","contentUrl":"https:\/\/bolin.su.se\/data\/uploads\/ryder-2019-ctd-bottle-ph-alkalinity.csv"},"size":49537,"isBasedOn":"Jakobsson M, Mayer LA, Farrell F, Ryder 2019 Scientific Party (2020) <a href=\"data\/oden-ryder-2019-expedition-4\/oden-ryder-2019-expedition-cruise-report-1.pdf\">Expedition report: SWEDARCTIC Ryder 2019<\/a>, Swedish Polar Research Secretariat, 455 pp, ISBN 978-91-519-5132-4","temporalCoverage":"2019-08-09\/2019-08-09"}]