This dataset consists of surface measurements of partial pressure of CO2 (pCO2), pH on total scale, water temperature, salinity, and other variables in the Casco Bay, Gulf of Maine from 2015-04-23 to 2020-06-12. The central goal of this project was to install continuous monitoring sensors in Casco Bay to measure ocean and coastal acidification parameters at high temporal resolution. The system was installed at the Southern Maine Community College (SMCC) pier in South Portland, Maine. The pier is located in the Portland Channel, an important southern outlet of Casco Bay, and near outlets of the Fore and Presumpscot rivers in a relatively urban area of Casco Bay. This location was selected because it is nearshore, accessible, and has historic nutrient data collected by the Friends of Casco Bay. Sensors for temperature/conductivity/salinity, dissolved oxygen, pH and pCO2 were mounted to a ‘lander’ frame, which was lowered via davit to the bottom. Sensor data were thus collected approximately 1m from the bottom, and at varying depth depending on the tide.

This dataset includes surface underway, chemical, meteorological, physical and time series coastal data collected from POSEIDON E1-M3A system buoy in the Cretan Sea, Aegean Sea, Eastern Mediterranean Sea from 2018-06-25 to 2022-11-29. These data include partial pressure (or fugacity) of carbon dioxide (pCO2) in water, sea surface salinity, sea surface temperature and barometric pressure. The instruments used to collect these data include carbon dioxide (CO2) gas analyzer, non-dispersive infrared detector (NDIR).

This dataset includes continuous sea surface measurements of partial pressure of carbon dioxide (pCO2), sea surface temperature and salinity collected from the Kwakshua Channel (KC) Buoy off the central coast of British Columbia from 2018-05-01 to 2023-05-06. Kwakshua Channel, located near Fitz Hugh Sound on the central coast of British Columbia, has been a site for moored, high-resolution measurements of surface seawater and marine boundary layer CO2 content since May 2018. Measurements of in situ temperature, salinity, seawater and atmospheric CO2 partial pressure are made every 30 minutes using a Battelle Seaology (MApCO2) System. The effort to collect these data are part of the Hakai Institute’s directive to advance the understanding of carbon cycling in northeast Pacific coastal settings with specific emphasis on ocean acidification.

This dataset includes continuous sea surface measurements of partial pressure of carbon dioxide (pCO2), sea surface temperature and salinity collected from the Kwakshua Channel (KC) Buoy off the central coast of British Columbia from 2018-05-01 to 2022-11-28. Kwakshua Channel, located near Fitz Hugh Sound on the central coast of British Columbia, has been a site for moored, high-resolution measurements of surface seawater and marine boundary layer CO2 content since May 2018. Measurements of in situ temperature, salinity, seawater and atmospheric CO2 partial pressure are made every 30 minutes using a Battelle Seaology (MApCO2) System. The effort to collect these data are part of the Hakai Institute’s directive to advance the understanding of carbon cycling in northeast Pacific coastal settings with specific emphasis on ocean acidification.

This dataset includes surface underway, chemical, meteorological, physical and time series coastal data collected from R.V Gulf Challenger in the North Atlantic Ocean, Gulf of Main from 2019-02-23 to 2019-10-24. These data include air temperature, barometric pressure, partial pressure (or fugacity) of carbon dioxide (pCO2) in atmosphere, pCO2 in water, sea surface salinity, sea surface temperature. The instruments used to collect these data include carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement.

This dataset includes surface underway, chemical, meteorological and physical data collected from R/V Cape Hatteras AOML_SOOP_CO2, CapeHatteras-2006, UGA Coastal Cruise (EXPOCODE 32KZ20060517) in the Atlantic Ocean from 2006-05-17 to 2006-05-27. These data include air-sea difference of partial pressure of carbon dioxide (pCO2), pCO2 in atmosphere, pCO2 in water, barometric pressure, sea surface salinity and water temperature. The instruments used to collect these data include barometric pressure sensor, Equilibrator-IR or CRDS or GC for autonomous carbon dioxide measurement and thermosalinographs. The Global Coastal Carbon Data Project data includes the bottle (discrete) and surface (underway) carbon-related measurements from coastal research cruises, the data from time series cruises and coastal moorings. The coastal regions data are very important for the understanding of carbon cycle on the continental margins.

This dataset includes surface underway, chemical, meteorological and physical data collected during R/V James Clark Ross cruises in the South Atlantic Ocean, Southern Ocean and South Pacific Ocean from 2020-01-08 to 2020-02-02. These data include partial pressure (or fugacity) of carbon dioxide - atmosphere, partial pressure (or fugacity) of carbon dioxide - water, sea surface salinity and sea surface temperature and barometric pressure. The instruments used to collect these data include barometric pressure sensor and carbon dioxide (CO2) gas analyzer.

This dataset includes surface underway, chemical, meteorological and physical data collected during R/V James Clark Ross cruises in the South Atlantic Ocean from 2017-02-05 to 2017-05-01. These data include partial pressure (or fugacity) of carbon dioxide - atmosphere, partial pressure (or fugacity) of carbon dioxide - water, sea surface salinity and sea surface temperature and barometric pressure. The instruments used to collect these data include barometric pressure sensor and carbon dioxide (CO2) gas analyzer.

This dataset includes surface underway, chemical, meteorological, physical and time series coastal data collected during R/V Gulf Challenger cruises in the North Atlantic Ocean, Gulf of Main from 2021-01-14 to 2021-11-08. These data include air temperature, barometric pressure, partial pressure (or fugacity) of carbon dioxide (pCO2) in atmosphere, pCO2 in water, sea surface salinity, sea surface temperature. The instruments used to collect these data include carbon dioxide (CO2) gas analyzer and shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement.

This dataset consists of surface underway measurements collected from the M/V Seaspan Royal as it transited the coastal waters of British Columbia, Canada from 2022-07-01 to 2022-12-20. Seawater was drawn from a depth of 2.5 m to a Sunburst SuperCO2 system and ancillary sensors from Sea-Bird Scientific. Measurements of temperature, salinity, dissolved oxygen content, and CO2 partial pressure were made every 2 seconds on seawater flowing through the system and instruments, and these data were logged by the SuperCO2 system. Seawater was delivered from the intake to analytical equipment using an AMT 1/2 HP pump (4295-98). Temperature and salinity data were collected using a Fluke thermometer (model 1523) with thermistor probe (model 5610) in the equilibrator, a Sea-Bird SBE 45 MicroTSG Thermosalinograph, and a SBE 38 Digital Oceanographic Thermometer at the seawater intake. Dissolved oxygen content was measured using a SBE63 oxygen optode. Raw oxygen measurements (with salinity reference = 0) were corrected for salt content following the approach provided with the SBE63 Manual revision 010. CO2 measurements were made with a LI-COR LI850 non-dispersive infrared detector housed with the SuperCO2 system. Standardization of the CO2 measurements was achieved through the measurement of four gas standards (Linde; 98.83 ppm, 386.30 ppm, 469.69 ppm, and 1248.45 ppm) that had undergone re-calibration using a zero (N2) and span gas (ESRL; 1567.44 ppm) bracketing the gas standard concentrations. A standardization sequence (measurement of each gas standard sequentially for a period of 90 seconds) was conducted every 4 or 12 hours (over different periods of the data record) and included a 90-second measurement period of atmospheric CO2 partial pressure on air drawn to the system from an intake on the aft deck. The final 20 seconds of atmospheric measurements were retained in the final dataset. Position and weather information (from an Airmax 120WX Weatherstation instrument positioned above the bridge) were logged separately from the SuperCO2 system data, and then merged with the SuperCO2 system data by time-matching the position and weather data to the SuperCO2 system data. This project was supported by the Tula Foundation and Seaspan.