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 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 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, 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 dissolved inorganic carbon, Total alkalinity, pH on Total Scale, nutrients and other variables measured from profile discrete measurement in the Northeast coast of the US. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry resulting in a reduction in pH, a process termed ocean acidification. Studies have demonstrated adverse effects on calcifying organisms, particularly some invertebrates, corals, sea urchins, pteropods, and coccolithophores. This effort is in support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP).

This data set 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 cruises near the Mooring buoy NH_70W_43N off the coast of New Hampshire, U.S. in the Gulf of Maine from 2023-01-25 to 2023-10-05. 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 dissolved inorganic carbon, total alkalinity, pH on total scale, nutrients and other variables measured from profile discrete observations during the R/V Hugh R. Sharp cruise S11802 (EXPOCODE 33H520181102) in the North Atlantic Ocean, Gulf of Maine, Georges Bank, and Mid-Atlantic Bight from 2018-11-02 to 2018-11-12. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry ultimately resulting in a reduction in pH, a process termed ocean acidification. Studies have demonstrated adverse effects on calcifying organisms, particularly some invertebrates, corals, sea urchins, pteropods, and coccolithophores, but also on species of commercial interest such as oysters or crabs. In support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP), the Ecosystem Monitoring Cruises (ECOMON) are utilized to collect water samples to measure water column inorganic carbon and hydrographic parameters including nutrients. Samples are collected at three depths (surface, mid-depth and near bottom) at select stations on a quarterly basis in the northeastern Atlantic continental shelf region of the United States. Water samples are sent to and analyzed by scientists at the Atlantic Oceanographic and Meteorological Laboratory (AOML) for dissolved inorganic carbon, pH and total alkalinity concentrations. Additional samples are analyzed for nutrient concentrations at the University of Maine. These data are used to monitor short-long term coastal ocean acidification trends.

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.