This dataset consists of dissolved inorganic carbon, total alkalinity, pH, dissolved oxygen concentration, water temperature and salinity collected from profile, discrete sampling, and time series observations during the R/V Gulf Challenger cruise near the Mooring buoy NH_70W_43N off the coast of New Hampshire, U.S. in the Gulf of Maine from 2022-04-13 to 2022-11-15. Additionally, an underway pCO2 measurement system was operated on some of these cruises, and surface underway pCO2 data are included in this archival package.

This dataset contains the discrete (Niskin bottle and CTD profile) data collected near the UNH/PMEL CO2 Buoy, located off the coast of New Hampshire in 2024. All data were collected aboard the UNH R/V Gulf Challenger. Additionally, an underway pCO2 measurement system was operated on some of these cruises, and surface underway pCO2 data are included in this archival package.

This dataset contains the discrete (Niskin bottle and CTD profile) data collected near the UNH/PMEL CO2 Buoy, located off the coast of New Hampshire in the Gulf of Maine from 2017-01-14 to 2020-11-08. All data were collected aboard the UNH R/V Gulf Challenger. Additionally, an underway pCO2 measurement system was operated on these cruises, and surface underway pCO2 data are included in this archival package.

This dataset contains the discrete, profile h data collected near the UNH/PMEL CO2 Buoy, located off the coast of New Hampshire in 2ydrographic and chemical data collected during the R/V Gulf Challenger cruise (EXPOCODE 33GC20210114) near the UNH/PMEL CO2 Buoy, located off the coast of New Hampshire, U.S. in the Gulf of Maine from 2021-01-14 to 2021-12-15. Additionally, an underway pCO2 measurement system was operated on these cruises, and surface underway pCO2 data are included in this archival package.

This dataset contains discrete measurements of dissolved inorganic carbon, total alkalinity, pH, dissolved oxygen, and nutrients collected at the buoy off the coast of New Hampshire in the years 2011-2015. University of New Hampshire, in conjunction with NOAA's Pacific Marine Environmental Laboratory, has been operating a buoy off the coast of New Hampshire since 2006.

This dataset contains the discrete (Niskin bottle and CTD profile) data collected near the UNH/PMEL CO2 Buoy, located off the coast of New Hampshire, between 2016 and 2020. All data were collected aboard the UNH R/V Gulf Challenger. Additionally, an underway pCO2 measurement system was operated on these cruises, and surface underway pCO2 data are included in this archival package.

This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, pH, temperature and salinity measured from R/V Savannah cruises in the U.S. East Coast South Atlantic Bight from 2014-04-02 to 2014-12-09.

This dataset consists of discrete profile measurements of DIC, total alkalinity, oxygen, temperature and salinity during R/V Tioga ten cruises in Wilkinson Basin of the Gulf of Maine from 2013-05-21 to 2015-02-15. Eleven short (1-2-day) cruises were conducted on R/V Tioga to sample water-column carbonate chemistry from May 2013 to July 2015 at a series of 6 stations in Wilkinson Basin and nearby areas. The first seven cruises (2013-2014) focused on capturing seasonal variation and occupied at least two stations (Stations 1 - 4). Station 2 is a deep-basin station (water depth > 250m) that was always sampled during each cruise. A shallow station (Station 3 or 4) located in the southwest portion of Wilkinson Basin along the flank of Stellwagen Bank was also sampled regularly. Station 1 is another deep station in Wilkinson Basin that was also previously occupied during the two Gulf of Mexico and East Coast Carbon Cruises (GOMECC 1 and 2) in August 2007 and 2012 respectively. The latter three cruises in 2015 sampled a cross-sectional transect from Station 2 to Station 6 in the southwest of Wilkinson Basin in April - July to study the spring-summer transition.

Near-shore estuarine and coastal regions are where most recreational fishing and tourism occur, yet they are vastly under-sampled. Their susceptibility to OA is not well understood due to their high biogeochemical variability. These regions are affected by land-side processes such as river discharge and run-offs and ocean-side processes through slope water exchange. A full determination of the carbonate system in these regions in conjunction with open ocean measurements is needed to increase our understanding of the effects of OA on ocean health and fisheries and our ability to predict them. In this project, we propose to augment several observational campaigns by 1) adding a carbonate component to the harmful algal blooms (HABs) monitoring cruises conducted periodically on the Western Florida Shelf in order to study potential links between HABs and OA, 2) renewing our collaboration with select National Parks to complement and enhance our near-shore data collection on the Northern Gulf of America and US East Coast, and 3) complementing our underway surface pCO2 measurements in the Gulf of America and US East Coast with underway total alkalinity measurements to help us improve our fundamental understanding of nearshore OA processes. The addition of these measurements to the current assets already present in the region would enhance our understanding of the linkage between nearshore and open ocean processes and better assess the mechanisms and impacts of OA on the biogeochemistry, biology and their economic consequences.

Near-shore estuarine and coastal regions are where most recreational fishing and tourism occur, yet they are vastly under-sampled. Their susceptibility to OA is not well understood due to their high biogeochemical variability. These regions are affected by land-side processes such as river discharge and run-offs and ocean-side processes through slope water exchange. A full determination of the carbonate system in these regions in conjunction with open ocean measurements is needed to increase our understanding of the effects of OA on ocean health and fisheries and our ability to predict them. In this project, we propose to augment several observational campaigns by 1) adding a carbonate component to the harmful algal blooms (HABs) monitoring cruises conducted periodically on the Western Florida Shelf in order to study potential links between HABs and OA, 2) renewing our collaboration with select National Parks to complement and enhance our near-shore data collection on the Northern Gulf of America and US East Coast, and 3) complementing our underway surface pCO2 measurements in the Gulf of America and US East Coast with underway total alkalinity measurements to help us improve our fundamental understanding of nearshore OA processes. The addition of these measurements to the current assets already present in the region would enhance our understanding of the linkage between nearshore and open ocean processes and better assess the mechanisms and impacts of OA on the biogeochemistry, biology and their economic consequences.