This data package contains Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the NOAA Ship Ronald H. Brown cruise RB2105Transit (EXPOCODE 33RO20210814) in the Gulf of Mexico and West Coast of the U.S., North Pacific Ocean from 2021-08-19 to 2021-08-24. Data were collected from the ship's underway seawater supply during a transit from San Diego CA to Key West FL. This effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Expanding near-shore carbonate measurements along the East-coast and Gulf of Mexico through multiple collaborations". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's AOML.

This data package contains Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the NOAA Ship Ronald H. Brown 2021 West Coast Ocean Acidification cruise RBWCOA2021 (EXPOCODE 33RO20210613) in the North Pacific Ocean from 2021-06-14 to 2021-07-20. Data were collected from the ship's underway seawater supply during the NOAA Ocean Acidification Program-funded West Coast Ocean Acidification (WCOA) cruise. This underway TA effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Expanding near-shore carbonate measurements along the East-coast and Gulf of Mexico through multiple collaborations". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's AOML.

This data package contains Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the NOAA Ship Ronald H. Brown GOMECC2021 cruise RB2103 (EXPOCODE 33RO20210913) in the Gulf of Mexico, North Atlantic Ocean from 2021-09-13 to 2021-10-21. Data were collected from the ship's underway seawater supply during the GOMECC-4 cruise. This effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Expanding near-shore carbonate measurements along the East-coast and Gulf of Mexico through multiple collaborations". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's AOML.

This data package contains Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the NOAA Ship Ronald H. Brown 2022 East Coast Ocean Acidification cruises (ECOA2022) (EXPOCODEs 33RO20220806, 33RO20220906) in the North Atlantic Ocean, U.S. East Coast from 2022-08-06 to 2022-09-23. Data were collected from the ship's underway seawater supply. This effort was part of the NOAA Ocean Acidification Program (OAP) grant. Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's AOML.

This dataset consists of sea surface underway measurements of partial pressure of carbon dioxide, temperature, salinity and barometric pressure during the Ship of Opportunity (SOOP) C/S Celebrity Flora cruise lines in the Atlantic Ocean, Caribbean Sea and Pacific Ocean from 2019-05-15 to 2019-12-01. In 2019, a CO2 instrument was installed aboard the new Celebrity Cruise ship, Flora, specifically designed for tours in the Galapagos Islands. The installation was completed during the Flora's inaugural cruise across the Atlantic in June. Repeating loops around and through the Galapagos Islands started in July, 2019.

This dataset contains discrete underway measurements collected on the transit from Cape Verde, to Miami, FL during the NOAA Ship Ronald H. Brown cruise RB2201 (EXPOCODE 33RO20220107) in the North Atlantic Ocean from 2022-01-07 to 2022-01-23. There are 47 discrete underway stations collected via a continuously flowing underway line fed from a seawater intake located at the bow, approximately 5 meters below the waterline. Parameters include water temperature, salinity, DIC, TA, and pH.

This dataset consists of surface underway, profile measurements of water temperature, salinity, dissolved oxygen concentration, dissolved inorganic carbon (DIC), total alkalinity (TA), pH, delta C13 and other hydrographic and chemical parameters obtained during the East Coast Ocean Acidification (ECOA-3) Cruise on board the NOAA Ship Ronald H. Brown in the East Coast US, North Atlantic Ocean from 2022-08-06 to 2022-09-23. The effort was in support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP). The cruise was designed to obtain a snapshot of key carbon, physical, and biogeochemical parameters as they relate to ocean acidification (OA) in the coastal realm. The cruise included a series of 24 transects approximately orthogonal to the Gulf of Maine and Atlantic coasts and a comprehensive set of underway measurements along the entire transect.

This dataset includes surface underway measurements of partial pressure (or fugacity) of carbon dioxide, water temperature, salinity and other variables collected during the NOAA Ship Ronald H. Brown cruises in the Pacific Ocean, Caribbean Sea, Gulf of Mexico from 1997-07-28 to 1997-11-14. These data include partial pressure (or fugacity) of carbon dioxide in water, partial pressure (or fugacity) of carbon dioxide in atmosphere, water temperature, salinity, wind direction and speed. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer, Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement and thermosalinographs. These data were collected by Rik Wanninkhof of NOAA Atlantic Oceanographic and Meteorological Laboratory as part of NOAA Ship Ronald H. Brown 1997 Underway Data data set: RB199701 - RB199708.

This dataset contains profile discrete measurements of total alkalinity, water temperature, salinity and other variables collected from profile discrete observations using flow through pump, CTD, Niskin Bottles and other instruments during the NOAA Ship Gordon Gunter cruise GU0802 Leg2 (EXPOCODE 33GG20080512), in the Gulf of Mexico from 2008-05-12 to 2008-05-30. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry. Through the SOOP program we measure air and ocean surface pCO2 and take discrete samples of other carbon parameters. This effort is in support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP) and the Climate Program Office.

This dataset includes surface underway measurements of partial pressure (or fugacity) of carbon dioxide, water temperature, salinity and other variables collected during the NOAA Ship Ronald H. Brown cruises in the Atlantic Ocean, Caribbean Sea, Gulf of Mexico from 2007-03-23 to 2008-01-18. These data include partial pressure (or fugacity) of carbon dioxide in water, partial pressure (or fugacity) of carbon dioxide in atmosphere, water temperature, salinity, wind direction and speed. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer, Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement and thermosalinographs. These data were collected by Rik Wanninkhof of NOAA Atlantic Oceanographic and Meteorological Laboratory as part of NOAA Ship Ronald H. Brown 2007 Underway Data data set: RB200701-RB200711.