NOAA-20 (N20/JPSS-1/J1) is the second satellite in the US NOAA latest generation Joint Polar Satellite System (JPSS), launched on November 18, 2017. NOAA is responsible for all JPSS products, including SST from the Visible Infrared Imaging Radiometer Suite (VIIRS).

This dataset includes surface underway chemical, meteorological and physical data collected from Autonomous Surface Vehicle (ASV) Saildrone 1029 (EXPOCODE 32DB20181003) in the Pacific Ocean from 2018-10-03 to 2019-01-29.

This dataset includes surface underway chemical, meteorological and physical data collected from Autonomous Surface Vehicle (ASV) Saildrone 1030 TPOS (EXPOCODE 32DB20181004) in the Pacific Ocean from 2018-10-04 to 2019-03-06.

This data package contains data measured using an autonomous, automated total alkalinity titrator on board NOAA Ship Henry Bigelow. Data were collected from the ship's underway seawater supply during the seven hydrographic surveys, from May 8 to October 10, 2023. Spatial data coverage extends from the Gulf of Maine to Cape Hatteras. 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".

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 RB2104 (EXPOCODE 33RO20210315) in the Caribbean Sea, North Pacific Ocean, U.S. West Coast from 2021-03-17 to 2021-03-30. Data were collected from the ship's underway seawater supply during a transit from Key West FL to San Diego CA.

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 data package contains underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the R/V Atlantis Atlantic Zone Monitoring Program (AZMP2022) cruise (EXPOCODE 33AT20220319) in U.S. and Canadian East Coast waters and the Labrador Sea, North Atlantic Ocean from 2022-03-19 to 2022-05-16. Data were collected from the ship's underway seawater supply during a transit from Woods Hole MA to Greenland.

This data package contains underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the NOAA Ship Henry B. Bigelow Ecosystem Monitoring (ECOMON2022) cruise HB2211 (EXPOCODE 33HH20220531) in the Gulf of Maine and Middle Atlantic Bight of the U.S. East Coast, North Atlantic Ocean from 2022-06-01 to 2022-06-17. Data were collected from the ship's underway seawater supply during the summer ECOMON survey.

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.

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.