This dataset contains the surface underway and surface discrete measurements of dissolved inorganic carbon (DIC), total alkalinity (TA), water temperature, salinity, partial pressure of CO2 (pCO2), pH, on total scale nutrients and other parameters obtained onboard the NOAA ship Ronald H. Brown during the GOMECC-4 cruise in the Gulf of Mexico and North Atlantic Ocean from 2021-09-13 to 2021-10-21. The ship departed from Key West, FL into the Gulf of Mexico and then around the coastal waters of the Gulf of Mexico in a counter-clockwise direction. The cruise ended in St. Petersburg, FL. The effort was in support of the coastal monitoring and research objectives of NOAA’S Ocean Acidification Program. 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. This was the fourth occupation of the Gulf of Mexico as part of the Ocean Acidification Program’s monitoring efforts, with the first three occurring in 2007, 2012 and 2017. The cruise included a series of 15 transects approximately orthogonal to the coast of the Gulf of Mexico and a 16th partial transect along the 27°N line between Florida and the Bahamas. On the transit between each of these transects, discrete samples were collected from the underway seawater line to obtain a comprehensive set of underway measurements. This dataset includes the data from the underway samples as well as the data from the surface sample of ech CTD cast performed along the 15 transects that were conducted during GOMECC-4.

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 includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, pH on seawater scale, partial pressure of carbon dioxide (pCO2), dissolved organic carbon (DOC), chlorofluorocarbons (CFC-11, CFC-12), temperature, salinity, dissolved oxygen, nutrients, sulfur hexafluoride (SF6), delta C13 and delta C14 obtained during NOAA Ship Ronald H. Brown cruise CLIVAR_A16N_2013 (EXPOCODE 33RO20130803) in the Atlantic Ocean from 2013-08-03 to 2013-10-01. The International CLIVAR Global Ocean Carbon and Repeat Hydrography Program carries out a systematic and global re-occupation of select WOCE/JGOFS hydrographic sections to quantify changes in storage and transport of heat, fresh water, carbon dioxide (CO2), and related parameters.

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 discrete and profile observation data collected from NOAA Ship Ronald H. Brown in the Pacific Ocean from 2015-04-10 to 2015-06-27. These data include water temperature, salinity, nutrients, chlorofluorocarbons (CFC-11, CFC-12), sulfur hexafluoride (SF6), dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, dissolved organic carbon (DOC), tritium, helium, delta C14, and delta C13. The International GO-SHIP Program carries out a systematic and global re-occupation of select WOCE/JGOFS hydrographic sections to quantify changes in storage and transport of heat, fresh water, carbon dioxide (CO2), and related parameters.

This dataset includes discrete profile measurements of Dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, discrete pCO2, chlorofluorocarbons (CFC11, CFC12), dissolved organic carbon (DOC), water temperature, salinity, dissolved oxygen, nutrients and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Thomas G. Thompson cruise on GO-SHIP repeat section A22 (EXPOCODE 325020210420) in the North Atlantic Ocean from 2021-04-20 to 2021-05-16. GO-SHIP repeat transoceanic surveys (www.goship.org) provide full water column hydrographic observations with temporal and spatial resolutions adequate to resolve decadal variability in oceanic storage of heat, freshwater, carbon, oxygen, nutrients and transient tracers. Repeat hydrographic physical-biogeochemical measurements nominally along 52° 20’N in the North Atlantic Ocean enables scientists to better tackle important unresolved aspects of the Atlantic Ocean’s response to decadal scale variability and increases in both heat and carbon dioxide as a result of anthropogenic activities. The A22 2021 cruise aboard the UNOLS vessel R/V Thomas G. Thompson was undertaken as part of the US GO-SHIP (Global Ocean Ship-based Hydrographic Investigations Program), a major contributor to international GO-SHIP. The program’s overall objective is to collect quasi-decadal, highly accurate, surface-to-bottom, coast-to-coast, physical, and chemical oceanic observations. These measurements are essential to monitoring long-term changes in heat, freshwater, carbon, oxygen, and other tracers in the global ocean, the main reservoir in the Earth System.

This dataset includes discrete profile measurements of Dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, discrete pCO2, chlorofluorocarbons (CFC11, CFC12), dissolved organic carbon (DOC), water temperature, salinity, dissolved oxygen, nutrients and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Thomas G. Thompson cruise on GO-SHIP repeat section A20 (EXPOCODE 325020210316) in the North Atlantic Ocean from 2021-03-16 to 2021-04-16. GO-SHIP repeat transoceanic surveys (www.goship.org) provide full water column hydrographic observations with temporal and spatial resolutions adequate to resolve decadal variability in oceanic storage of heat, freshwater, carbon, oxygen, nutrients and transient tracers. Repeat hydrographic physical-biogeochemical measurements nominally along 52° 20’N in the North Atlantic Ocean enables scientists to better tackle important unresolved aspects of the Atlantic Ocean’s response to decadal scale variability and increases in both heat and carbon dioxide as a result of anthropogenic activities. The U.S. GO-SHIP A20 2021 hydrographic section revisited this line for the fourth time, with prior transects occurring in 1997, 2003, and 2012.

This dataset includes chemical, discrete sample, physical and profile data collected during NOAA Ship Ronald H. Brown cruise 31RBOACES24N_2, OACES-98 (EXPOCODE 33RO19980123), along the WOCE Section A05 in the North Atlantic Ocean from 1998-01-23 to 1998-02-23. These data include partial pressure (or fugacity) of carbon dioxide (pCO2), dissolved inorganic carbon (DIC), pH on seawater scale, total alkalinity (TA), water temperature, salinity, silicate, nitrate, nitrite, phosphate, chlorofluorocarbons (CFC-11, CFC-12, CFC-113), carbon tetrachloride (CCL4), delta carbon-13, delta carbon-14, dissolved oxygen and total organic carbon (TOC). The instruments used to collect these data include Alkalinity titration, CTD, Coulometer for DIC measurement, flask with closed headspace for discrete carbon dioxide (CO2) measurement, bottle and spectrophotometer. These data were collected by David S. Bitterman and Rik Wanninkhof of NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML), Kitack Lee of Pohang University of Science and Technology School of Environmental Science and Engineering, and Frank J. Millero of Rosenstiel School of Marine and Atmospheric Science (RSMAS) as part of the WOCE_AR01(A05), CARINA/33RO19980123 dataset. The CARINA (CARbon dioxide IN the Atlantic Ocean) data synthesis project is an international collaborative effort of the EU IP CARBOOCEAN, and U.S. partners. It has produced a merged internally consistent dataset of open ocean subsurface measurements for biogeochemical investigations, in particular, studies involving the carbon system. The original focus area was the North Atlantic Ocean, but over time the geographic extent expanded and CARINA now includes data from the entire Atlantic, the Arctic Ocean, and the Southern Ocean.

This dataset includes discrete profile measurements of Dissolved inorganic carbon (DIC), total alkalinity, pH on sea water scale, dissolved organic carbon (DOC), chlorofluorocarbons (CFC-11, CFC-12), temperature, salinity, oxygen, nutrients, and other variables measured during NOAA Ship Ronald H. Brown cruise along the Global Ocean Ship-Based Hydrographic Investigation Program (GO-SHIP) Section I07N (EXPOCODE 33RO20180423) in the Indian Ocean on from 2018-04-23 to 2018-06-06. Hydrographic measurements were carried out along the I07N section in the western Indian Ocean in April-June 2018 under the auspices of GO-SHIP. The unique aspect of the 2018 I07N research cruise is that it was the first reoccupation of the I07N section since 1995. The section was not revisited for about 23 years because of the rise of piracy in the region.

This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, temperature, salinity, oxygen and nutrients collected during the R/V Discovery cruise GO-SHIP Repeat Section A05 (EXPOCODE 74EQ20151206) in the Atlantic Ocean from 2015-12-06 to 2016-01-22. This cruise is U.S. State Department MSR U2015-30 as part of the World Data Service for Oceanography.