[{"@context":"http:\/\/schema.org\/","@type":"Dataset","identifier":"https:\/\/doi.org\/10.17043\/oden-ryder-2019-surface-seawater-ph-alkalinity-1","@id":"https:\/\/doi.org\/10.17043\/oden-ryder-2019-surface-seawater-ph-alkalinity-1","name":"Underway measurements of seawater pH and total alkalinity from the Ryder 2019 expedition","description":"Continuous, underway measurements of seawater pH and total alkalinity (TA) were collected from the surface seawater intake system on board the Swedish icebreaker Oden during the Ryder 2019 Expedition (August\u2060\u200a\u2013\u200a\u2060September) from coastal waters along northwestern Greenland, from Thule in the south to Sherard Osborn Fjord in the north. More specifically, the observations cover Nares Strait, southern Lincoln Sea, Sherard Osborn Fjord (where Ryder Glacier drains), and Petermann fjord (where Petermann Glacier drains).\r\n\r\nSeawater pH and TA were measured spectrophotometrically with automated analyzers (CONTROS HydroFIA pH and TA). The continuous observations of sea-surface pH (total pH scale, 25 \u00b0C, in situ salinity) and total alkalinity (\u00b5mol\/kg-seawater) have a temporal resolution of 10 minutes and are accompanied by recordings of time, latitude, longitude, sea-surface salinity, and sea-surface temperature.\r\n\r\nSeawater pH and TA are two key variables of the marine carbonate system. From these observations, together with concurrent measurements of temperature and salinity, 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-surface-seawater-ph-alkalinity-1","keywords":["Marine","Marine chemistry","Arctic Ocean","Underway","Carbonate system","Ryder 2019 expedition","Icebreaker Oden","Earth science > Oceans"],"creator":{"@type":"Person","name":"Adam Ulfsbo"},"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-surface-seawater-ph-alkalinity.csv"},"size":219786,"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":"2019-08-06\/2019-08-06"}]