This dataset contains the surface underway biological oxygen saturation data of the third dedicated East Coast Ocean Acidification cruise (ECOA2022). The cruise took place August 6 - September 23, 2023 aboard the NOAA Ship Ronald H. Brown. The cruise was designed to obtain a synoptic snapshot of key carbon, physical, and biogeochemical parameters as they relate to ocean acidification (OA) in the coastal realm. This effort was conducted in support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP).

The fourth Gulf of Mexico Ecosystems and Carbon Cycle (GOMECC-4) Cruise took place on board the NOAA Ship Ronald H. Brown, from September 13–October 21, 2021. The cruise 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, ending in St. Petersburg, FL. 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, biogeochemical and biological 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 OAP’s monitoring efforts in the region, with the previous ones occurring in 2007, 2012, and 2017. The cruise included a series of 15 transects approximately orthogonal to coast of the Gulf of Mexico and a 16th partial transect along the 27°N line, between Florida and the Bahamas, as well as a comprehensive set of underway measurements. This dataset includes the processed, 1db-binned CTD profile data collected in the 141 stations.

The second Gulf of Mexico and East Coast Carbon (GOMECC-2) Cruise on board NOAA Ship Ronald H. Brown from Miami, took place in the Gulf of Mexico and then along the East US coast to Boston. 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. This was the second occupation, with the first occurring in 2007, and complemented mooring time series and other regional OA activities. The cruise included a series of 8 transects approximately orthogonal to the Gulf of Mexico and Atlantic coasts and a comprehensive set of underway measurements along the entire transect.

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 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.

A total of 230 environmental profiles were acquired during the Southeast Area Monitoring and Assessment Program (SEAMAP) summer groundfish survey of the Western and North-central Gulf of Mexico conducted during June and July 2006 and aboard NOAA Ship Oregon II. The profiles were acquired between the 5 and 60 fathom isobaths at stations located east of the Mississippi River and in the area of Brownsville, Texas eastward to the Louisiana Bight. Maximum water depths recorded in the profile headers range from 8.8 to 245.0 meters with an average maximum depth of 39.7 meters. The survey is a stratified random design with depth interval, NMFS Statistical Subareas 11 through 21 and day and night as strata. The data were processed into 1 meter average depth bins of water temperature, salinity, dissolved oxygen (DO), DO percent saturation, fluorescence, transmittance, density, and number of data records. The profiles were quality controlled during and after the cruise.

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 contains dissolved inorganic carbon, pH, oxygen, and other variables collected from surface underway observations during the East Coast Ocean Acidification (ECOA) Cruise. The East Coast Ocean Acidification (ECOA) Cruise on board NOAA Ship Gordon Gunter from Newport, took place in the Gulf of Maine and then along the East US coast to Miami. 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 11 transects approximately orthogonal to the Gulf of Maine and Atlantic coasts and a comprehensive set of underway measurements along the entire transect.

This dataset contains CTD profile data of dissolved oxygen, CDOM, chlorophyll a, temperature and salinity data that were collected during the East Coast Ocean Acidification (ECOA) Cruise on board NOAA Ship Gordon Gunter from Newport, took place in the Gulf of Maine and then along the East US coast to Miami. 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 11 transects approximately orthogonal to the Gulf of Maine and Atlantic coasts and a comprehensive set of underway measurements along the entire transect.

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.