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.

These data were collected from the west coast of Vancouver Island, between August 24th and September 7th 2021, as part of the Line P Water Properties Survey led by Marie Robert. Discrete dissolved inorganic carbon (DIC), total alkalinity (TA), salinity, and nutrient samples were taken from rosette casts with 10L Niskin bottles and analyzed at the Institute of Ocean Sciences. Discrete samples of dissolved oxygen were also collected and analyzed onboard the vessel. CTD profiles were recorded with each rosette cast. DIC/TA samples were placed in cool storage after collection and returned to the shore-based lab for analysis. Oxygen units were converted to µmol/kg when reported in ml/L. Nutrient concentrations were converted to µmol/kg from µmol/L. The raw data and other supporting documents can be obtained from https://www.waterproperties.ca/.

This dataset consists of discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity (TA), water temperature, salinity, nutrients and dissolved oxygen during the CCGS Vector Water Properties Survey cruise 2014-50 (EXPOCODE 18VT20141027) in the Strait of Georgia, Juan de Fuca Strait of the North American Pacific coast from 2014-10-27 to 2014-10-30. The 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 11 weeks before analysis. A total of 98 DIC and TA pairs were sampled with a 14 percent replication rate; and the pooled standard deviations (of difference between replicate pairs) were calculated to be 0.5 µmol/kg and 1.3 µmol/kg respectively. The Strait of Georgia Water Properties Survey is a regular sampling program of 3 - 4 cruises per year; and additional data from cruises under this program will be submitted in the future.

This dataset consists of discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity (TA), water temperature, salinity, nutrients and dissolved oxygen during the CCGS Vector Water Properties Survey cruise 2015-17 (EXPOCODE 18VT20150401) in the Strait of Georgia, Juan de Fuca Strait of the North American Pacific coast from 2015-04-01 to 2015-04-05. The samples were taken from rosette casts with 10L Niskin bottles and analyzed at the Institute of Ocean Sciences. Discrete samples of dissolved oxygen were also collected and analyzed onboard the vessel. CTD profiles were recorded with each rosette cast. DIC and TA samples were placed in cold storage for 5-6 weeks before analysis. A total of 76 DIC and TA pairs were sampled with a 17% replication rate; and the pooled standard deviations (of difference between replicate pairs) were calculated to be 0.9 µmol/kg and 2 µmol/kg respectively. The Strait of Georgia Water Properties Survey is a regular sampling program of 3 - 4 cruises per year; and additional data from cruises under this program will be submitted in the future.

These data were collected from the west coast of Vancouver Island, between from 2008-06-01 to 2008-06-11, as part of the Line P Water Properties Survey led by Marie Robert. This cruise also contributes to the complete time series under NCEI #0110260. Discrete dissolved inorganic carbon (DIC), total alkalinity (TA), salinity and nutrient samples were taken from rosette casts with 10L Niskin bottles and analyzed at the Institute of Ocean Sciences. DIC/TA samples were placed in cool storage after collection and returned to the shore-based lab for analysis.The raw data and other supporting documents can be obtained from https://www.waterproperties.ca/.

This dataset includes discrete sample and profile data collected during the CCGS Hudson, R/V Coriolis II, CCGS Teleost, RRS James Cook and Fugro Discovery Atlantic Zone Monitoring Program cruises in the North Atlantic Ocean and Labrador Sea from 2014-11-16 to 2020-12-01. These data include water temperature, salinity, dissolved oxygen, nutrients, dissolved inorganic carbon (DIC), total alkalinity, pH on the total scale, and ammonium. The Atlantic Zone Monitoring Program (AZMP) was implemented in 1998 with the aim of increasing Fisheries and Oceans Canada's (DFO) 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 Fisheries and Oceans Canada under the Aquatic Climate Change Adaption Services Program 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.

Dissolved inorganic carbon (DIC), total alkalinity (TA), water temperature, salinity and other measurements collected from discrete samples and profile observations during the USCGC Healy RAPID cruise HLY2021 (EXPOCODE 32HQ20210901) in Davis Strait, North Atlantic Ocean from 2021-09-01 to 2021-10-02. At all stations, CTD casts were conducted, and discrete water samples were collected in Niskin bottles.

Near-shore estuarine and coastal regions are where most recreational fishing and tourism occur, yet they are vastly under-sampled. Their susceptibility to OA is not well understood due to their high biogeochemical variability. These regions are affected by land-side processes such as river discharge and run-offs and ocean-side processes through slope water exchange. A full determination of the carbonate system in these regions in conjunction with open ocean measurements is needed to increase our understanding of the effects of OA on ocean health and fisheries and our ability to predict them. In this project, we propose to augment several observational campaigns by 1) adding a carbonate component to the harmful algal blooms (HABs) monitoring cruises conducted periodically on the Western Florida Shelf in order to study potential links between HABs and OA, 2) renewing our collaboration with select National Parks to complement and enhance our near-shore data collection on the Northern Gulf of America and US East Coast, and 3) complementing our underway surface pCO2 measurements in the Gulf of America and US East Coast with underway total alkalinity measurements to help us improve our fundamental understanding of nearshore OA processes. The addition of these measurements to the current assets already present in the region would enhance our understanding of the linkage between nearshore and open ocean processes and better assess the mechanisms and impacts of OA on the biogeochemistry, biology and their economic consequences.

This dataset contains dissolved inorganic carbon, total alkalinity, pH on total scale, nutrients and other variables measured from profile discrete observations during the R/V Hugh R. Sharp cruise S11802 (EXPOCODE 33H520181102) in the North Atlantic Ocean, Gulf of Maine, Georges Bank, and Mid-Atlantic Bight from 2018-11-02 to 2018-11-12. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry ultimately resulting in a reduction in pH, a process termed ocean acidification. Studies have demonstrated adverse effects on calcifying organisms, particularly some invertebrates, corals, sea urchins, pteropods, and coccolithophores, but also on species of commercial interest such as oysters or crabs. In support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP), the Ecosystem Monitoring Cruises (ECOMON) are utilized to collect water samples to measure water column inorganic carbon and hydrographic parameters including nutrients. Samples are collected at three depths (surface, mid-depth and near bottom) at select stations on a quarterly basis in the northeastern Atlantic continental shelf region of the United States. Water samples are sent to and analyzed by scientists at the Atlantic Oceanographic and Meteorological Laboratory (AOML) for dissolved inorganic carbon, pH and total alkalinity concentrations. Additional samples are analyzed for nutrient concentrations at the University of Maine. These data are used to monitor short-long term coastal ocean acidification trends.