National Coral Reef Monitoring Program: Water chemistry collected at Moored Autonomous Partial Pressure of Carbon Dioxide (MAPCO2) buoys in the Pacific Ocean

This collection contains carbonate chemistry data collected at fixed sites in the Pacific Ocean as part of calibration and validation for Moored Autonomous Partial Pressure of Carbon Dioxide (MAPCO2) buoys. The data from these MAPCO2 buoys complement a national array of moored carbon dioxide buoys across the Pacific, Atlantic, and Caribbean. The buoys are primarily funded by NOAA's Ocean Acidification Program and supported by NOAA's Pacific Marine Environmental Laboratory (PMEL), Atlantic Oceanographic and Meteorological Laboratory (AOML), and Coral Reef Conservation Program (CRCP). Samples are collected every two weeks from predetermined sites around the buoy from the boat or by SCUBA divers. The samples are processed by the AOML where they are analyzed for total alkalinity (TA) and dissolved inorganic carbon (DIC). Using the analyzed TA and DIC, alongside temperature, salinity and depth data, AOML staff calculated other important carbonate chemistry system parameters such as pH, pCO2, and aragonite saturation and reported the results in these data.