National Coral Reef Monitoring Program: Diel seawater carbonate chemistry observations from a suite of instrumentation deployed at coral reef sites in the Mariana Archipelago in 2017 and 2022

The diel suite is an autonomous instrument package that measures diel variability in coral reef oceanographic conditions and seawater carbonate chemistry. Diel suite surveys are conducted by the NOAA Pacific Islands Fisheries Science Center (PIFSC), Ecosystem Sciences Division (ESD) within coral reef ecosystems across the Pacific Islands Region as part of the NOAA National Coral Reef Monitoring Program (NCRMP). The data provided in this data set are from diel suites deployed at sites in Guam, Aguijan, Maug, and Pagan, Mariana Archipelago in 2017 and 2022.

Diel suites were deployed on the reef for at least 24 hours to measure in-situ salinity, temperature, pressure, pH, current direction and magnitude, dissolved oxygen, and photosynthetically active radiation (PAR). Seawater samples were also collected for laboratory analyses of dissolved inorganic carbon (DIC) and total alkalinity (TA). Components of the carbonate system--including pH, pCO2 (partial pressure of carbon dioxide), and aragonite saturation state--are calculated from DIC, TA, temperature, salinity and pressure. Each diel suite typically consisted of: 1 SBE-19plus or RBR concerto3 CTD sensor, 1 Nortek Acoustic Doppler Current Profiler (ADCP), 1 Satlantic SeaFET Ocean pH sensor, 1 SBE or RBR dissolved oxygen sensor (2022 only), 1 RBR photosynthetically active radiation sensor (2022 only), 1 tilt current meter (2022 only), and up to 9 Programmable Underwater Collectors (PUCs, 2017) or Sub-surface Automated Samplers (SAS, 2022), each of which collected a water sample at set intervals. Instruments deployed, samples collected, and sample intervals are recorded in the summary file enclosed with the data package, and exceptions to the standard diel suite are also noted.

Tags: 743, acoustic doppler current profiler, adcp, aguihan, aguihan island (aguijan) (14n145e0006), aguihan island reefs, alkalinity, alkalinity - total [total alkalinity], aquatic habitat, aragonite saturation state, biosphere, calcification, carbon dioxide, carbonate chemistry, chemistry monitoring and assessment, climate change, cnmi, coastal processes, commonwealth of the northern mariana islands, conductivity, continuous, coral reef, coral reef conservation program, coral reef ecosystem division, coral reef ecosystem program, coral reef studies, coral reefs, corals, coulometer for dic measurement, country/territory, cred, crep, ctd, ctd - moored ctd, current direction, current measurements, current meters, current speed, density, depth, depth - sensor, diel, dissolution, dissolved gases, dissolved inorganic carbon, dissolved inorganic carbon (dic), dissolved oxygen, doc/noaa/nmfs/pifsc, doc/noaa/nmfs/pifsc/esd, earth science, ecosystem sciences division, ecosystems, esd, guam, guam (13n144e0000), hi'ialakai, in situ, in situ chemical, in situ physical, inorganic carbon, mariana archipelago, marianas, marianas archipelago, marianas trench marine national monument, marine ecosystems, maug, maug island, maug island (20n145e0001), micronesia, national coral reef monitoring program, national marine fisheries service, ncrmp, nmfs, noaa, northern mariana islands, numeric data sets, nw pacific, ocean, ocean acidification, ocean basin, ocean chemistry, ocean circulation, ocean currents, ocean optics, ocean salinity, ocean temperature, oceanography, oceans, oxygen, oxygen meters, pacific islands fisheries science center, pacific ocean, pagan, pagan island, pagan island (18n145e0001), par, par sensors, partial pressure, partial pressure of carbon dioxide - water, ph, ph meters, ph sensor, photosynthetically active radiation, photosynthetically active radiation sensors, physical, pifsc, pressure - water [hydrostatic pressure], programmable underwater collector, puc, rainier, ramp, rapid ecological assessment, rea, reef, reef assessment and monitoring program, reef habitat, reef monitoring and assessment, salinity, salinity - bottom water, salinity/density, sas, saturation state, sigma-t, small boat, speed profiles, subsurface automated samplers, tcm, temperature, tilt current meter, time series profile, titrator, u.s. department of commerce, united states of america, us doc, water chemistry, water current direction, water samples, water temperature, water velocity, western pacific ocean, zoology
Organization: National Oceanic and Atmospheric Administration, Department of Commerce