Oceanographic sampling of physical, chemical, and biological parameters was conducted along selected fixed sections in Davis Strait, Baffin Bay, Labrador Sea, North Pacific Ocean at full water depths during the R/V Dana Davis Strait Observing System (DSOS) cruise (EXPOCODE 26D420200830) from 2020-08-30 to 2020-09-14. The cruise is part of DSOS's long-term, high-frequency repeat program. CTD casts were performed at all stations, and discrete water samples were collected in Niskin bottles using the CTD/Rosette system. It was designed to investigate Arctic-North Atlantic interactions, including the variability and trend of freshwater, heat, carbon, oxygen, and nutrient fluxes, as well as ecosystem responses to climate change. This effort was conducted in support of the NSF (OPP1902595) and Fisheries and Oceans, Canada (OFSI).

This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity (TA), water temperature, salinity, dissolved oxygen, macronutrients, and oxygen isotopes measured during R/V Rachel Carson cruise RC0083 in the the Gulf of Alaska from 2022-08-11 to 2022-08-24. The cruise was funded by the National Oceanic and Atmospheric Administration (NOAA) Ocean Acidification Program (OAP). The carbonate system data were collected and analyzed by members at the Ocean Acidification Research Center (OARC) at the University of Alaska Fairbanks (UAF). The dissolved oxygen and macronutrient samples were analyzed by Calvin Mordy's group at UW CICOES and NOAA PMEL. The oxygen stable isotopes were analyzed at the Oregon State University Stable Isotope Lab. CTD operations were led by the chief scientist, Jessica Cross, and the ship's crew.

This dataset consists of data collected during the CCGS John P. Tully cruise 2019.23 (EXPOCODE 18DD20190829) in the Salish Sea and off the west coast of Vancouver Island of the North American Pacific coast from 2019-08-29 to 2019-09-06 as part of the La Perouse Water Properties Survey. Discrete dissolved inorganic carbon (DIC), total alkalinity (TA), salinity, and nutrient samples were taken from rosette casts with 10L Niskin bottles and analysed at the Institute of Ocean Sciences. Discrete samples of dissolved oxygen were also collected and analysed onboard the vessel. CTD profiles were recorded with each rosette cast. DIC and TA samples were placed in cold storage for 1-4 weeks before analysis. A total of 61 DIC and TA pairs were sampled with a 22 percent replication rate. Replicates are not averaged in this dataset and appear individually, indicated by decimal sample ID's (e.g. 26.1, 26.2). The pooled standard deviations (of difference between replicate pairs) were calculated to be 6 umol/kg and 5 umol/kg respectively. Replicates with a QC flag = 3 were included in the pooled standard deviation calculation but replicate pairs with at least one QC flag = 4 (n = 1) were excluded.

This dataset includes discrete sample and profile data collected during the RRS James Cook Fisheries and Oceans Canada (DFO) Atlantic Zone Monitoring Program (AZMP) cruise (EXPOCODE 740H20221022) in the North Atlantic Ocean and Labrador Sea from 2022-10-22 to 2022-11-08. These data include water temperature, salinity, dissolved oxygen, nutrients, dissolved inorganic carbon (DIC), total alkalinity (TA), pH, and other parameters. Oceanographic sampling of physical, biological, and chemical parameters is performed annually along selected fixed sections as part of the AZMP. The sampling consists at a minimum of a vertical profile of the entire water column (temperature; salinity; dissolved oxygen); rosette bottle casts at selected depths (nutrients; DIC and TA; and other biological parameters) as well as plankton net tows. The AZMP was implemented in 1998 with the aim of increasing DFO's capacity to understand, describe, and forecast the state of the marine ecosystem and to quantify the changes in the ocean physical, chemical, and biological properties. Ocean acidification is an emerging priority for DFO under the Aquatic Climate Change Adaption Services Program (ACCASP) and is developing the knowledge-base necessary to support the development of adaptation tools and strategies and investing in science to better understand the specific consequences of a changing climate. Specifically, the effects of ocean acidification on ecosystems in the Northwest Atlantic and large aquatic basin risk assessments consider ocean acidification at the basin and sub-basin scale are being investigated.

This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, temperature, salinity, oxygen and nutrients collected during the R/V Keifu Maru II cruise ks201706, Repeat Hydrography Sections P09, P10 (EXPOCODE 49UF20170719) in the North Pacific Ocean from 2017-07-19 to 2017-09-07.

This dataset includes discrete sample and profile data collected during the RRS Discovery Fisheries and Oceans Canada (DFO) Atlantic Zone Monitoring Program (AZMP) cruise (EXPOCODE 32V320241028) in the North Atlantic Ocean and Labrador Sea from 2024-10-28 to 2024-11-23. These data include water temperature, salinity, dissolved oxygen, nutrients, dissolved inorganic carbon (DIC), total alkalinity (TA), pH, and other parameters. Oceanographic sampling of physical, biological, and chemical parameters is performed annually along selected fixed sections as part of the AZMP. The sampling consists at a minimum of a vertical profile of the entire water column (temperature; salinity; dissolved oxygen); rosette bottle casts at selected depths (nutrients; DIC and TA; and other biological parameters) as well as plankton net tows. The AZMP was implemented in 1998 with the aim of increasing DFO's capacity to understand, describe, and forecast the state of the marine ecosystem and to quantify the changes in the ocean physical, chemical, and biological properties. Ocean acidification is an emerging priority for DFO under the Aquatic Climate Change Adaption Services Program (ACCASP) and is developing the knowledge-base necessary to support the development of adaptation tools and strategies and investing in science to better understand the specific consequences of a changing climate. Specifically, the effects of ocean acidification on ecosystems in the Northwest Atlantic and large aquatic basin risk assessments consider ocean acidification at the basin and sub-basin scale are being investigated.

This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, temperature, salinity, dissolved oxygen, nutrients, and other measurements collected from profile and discrete sample observations during the R/V Keifu Maru II cruise ks202002 (EXPOCODE 49UF20200201) in the North Pacific Ocean from 2020-02-01 to 2020-03-23.

This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, temperature, salinity, oxygen and nutrients collected during the R/V Keifu Maru II cruise KS10-01 (EXPOCODE 49UF20100108) in the Pacific Ocean from 2010-01-08 to 2010-03-01.

This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, temperature, salinity, dissolved oxygen, nutrients, and other measurements collected from profile and discrete sample observations during the R/V Keifu Maru II cruise ks202006 (EXPOCODE 49UF20200730) in the North Pacific Ocean from 2020-07-30 to 2020-08-20.

This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, temperature, salinity, oxygen and nutrients collected during the R/V Keifu Maru II cruise KS13-06, Repeat Sections P09/P13 (EXPOCODE 49UF20130627) in the Pacific Ocean from 2013-06-27 to 2013-08-29.