gov.noaa.nmfs.inport:54928 eng UTF8 dataset CSV Files Pacific Islands Fisheries Science Center 808-725-5300 1845 Wasp Blvd. Honolulu HI 96818 USA https://www.pifsc.noaa.gov WWW:LINK-1.0-http--link Website Website for this organization information 8:00 a.m. - 4:30 p.m. resourceProvider Luers, Lori H 1845 Wasp Blvd. Honolulu HI 96818 USA lori.luers@noaa.gov pointOfContact 2026-03-04T19:17:25 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) National Coral Reef Monitoring Program: Diel seawater carbonate chemistry observations from a suite of instrumentation deployed at coral reef sites at Tutuila Island, American Samoa in 2015 and 2018 NCRMP: Diel American Samoa 2019 creation 2021 publication NOAA/NMFS/EDM 54928 https://www.fisheries.noaa.gov/inport/item/54928 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Pacific Islands Fisheries Science Center 808-725-5360 1845 Wasp Blvd. Honolulu HI 96818 USA pifsc.info@noaa.gov https://www.pifsc.noaa.gov WWW:LINK-1.0-http--link Pacific Islands Fisheries Science Center Website Pacific Island Fisheries Science Center homepage information 8:00 a.m. - 4:30 p.m. originator https://www.coris.noaa.gov/monitoring/ WWW:LINK-1.0-http--link NOAA National Coral Reef Monitoring Program Information about the NOAA National Coral Reef Monitoring Program (NCRMP) on the NOAA Coral Reef Information System website. download https://www.fisheries.noaa.gov/region/pacific-islands#science WWW:LINK-1.0-http--link Ecosystem Sciences Division PIFSC Ecosystem Sciences Division web page download tableDigital The ocean acidification diel suite is an autonomous instrument package that measures diel variability in coral reef 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 select sites at Tutuila Island in March 2015 and June - July 2018, during the ESD-led NCRMP missions to American Samoa. Diel suites were deployed on the reef for at least 24 hours to measure in-situ salinity, temperature, pressure, pH, current direction and magnitude, and dissolved oxygen (starting 2018). 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 CTD sensor, 1 Nortek Acoustic Doppler Current Profiler (ADCP), 1 Satlantic SeaFET Ocean pH sensor, and up to 9 Programmable Underwater Collectors (PUCs), each of which collected 1 water sample at 3- or 4-hour intervals. Starting 2018, 1 SBE-43 oxygen sensor is tethered to the CTD sensor for diel surveys. Diel surveys from 2019 also incorporate stand-alone PAR and DO loggers however they have yet to be conducted in American Samoa. 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. Manual seawater sampling and other National Coral Reef Monitoring Program (NCRMP) field monitoring efforts are limited to daylight hour operations. As a result, these data sets do not capture full 24-hour variability in coral reef physical and chemical environments. The ocean acidification diel suite was developed to increase the temporal resolution and coverage of oceanographic and carbonate chemistry measurements and contextualize daytime sampling within the full diel cycle. PIFSC Ecosystem Sciences Division and funded by the NOAA Coral Reef Conservation Program onGoing Barkley, Hannah C 1845 Wasp Blvd. Honolulu HI 96818 USA hannah.barkley@noaa.gov pointOfContact Barkley, Hannah C 1845 Wasp Blvd. Honolulu HI 96818 USA hannah.barkley@noaa.gov custodian asNeeded Initially published in 2019 with data collected in 2015. Updated in 2021 with data collected in 2018. https://media.fisheries.noaa.gov/dam-migration-miss/1280_UZ1pcvsgN067.jpg?1563216764 Example of a diel suite deployment. The ocean and climate change team deploys the "diel suite" instrument package in Papa Bay. Source: NOAA Fisheries; see https://www.fisheries.noaa.gov/science-blog/sea-tales-monitoring-coral-reef-ecosystems-throughout-hawaiian-archipelago JPG 743 National Coral Reef Monitoring Program theme CRCP Project Numeric Data Sets > Oceanography theme CoRIS Discovery Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > In Situ Chemical EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > In Situ Physical EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs EARTH SCIENCE > Oceans > Ocean Chemistry > Alkalinity EARTH SCIENCE > Oceans > Ocean Chemistry > Calcification EARTH SCIENCE > Oceans > Ocean Chemistry > Carbon Dioxide > Partial Pressure EARTH SCIENCE > Oceans > Ocean Chemistry > Carbonate Chemistry EARTH SCIENCE > Oceans > Ocean Chemistry > Chemistry Monitoring and Assessment EARTH SCIENCE > Oceans > Ocean Chemistry > Climate Change EARTH SCIENCE > Oceans > Ocean Chemistry > Dissolution EARTH SCIENCE > Oceans > Ocean Chemistry > Dissolved Gases EARTH SCIENCE > Oceans > Ocean Chemistry > Dissolved Inorganic Carbon EARTH SCIENCE > Oceans > Ocean Chemistry > Ocean Acidification EARTH SCIENCE > Oceans > Ocean Chemistry > Saturation State EARTH SCIENCE > Oceans > Ocean Chemistry > pH EARTH SCIENCE > Oceans > Ocean Circulation EARTH SCIENCE > Oceans > Ocean Circulation > Water Current Direction EARTH SCIENCE > Oceans > Ocean Circulation > Water Velocity EARTH SCIENCE > Oceans > Ocean Temperature > Water Temperature EARTH SCIENCE > Oceans > Salinity/Density > Conductivity EARTH SCIENCE > Oceans > Salinity/Density > Density EARTH SCIENCE > Oceans > Salinity/Density > Salinity theme CoRIS Theme Thesaurus ALKALINITY - TOTAL [total alkalinity] ARAGONITE SATURATION STATE CONDUCTIVITY CURRENT DIRECTION CURRENT SPEED DEPTH - SENSOR DISSOLVED INORGANIC CARBON (DIC) PRESSURE - WATER [HYDROSTATIC PRESSURE] SALINITY - BOTTOM WATER SCIENCE > Oceans > Ocean Chemistry > Oxygen SIGMA-T WATER TEMPERATURE dissolved oxygen pH partial pressure of carbon dioxide - water theme NODC DATA TYPES THESAURUS ADCP CTD - moored CTD Coulometer for DIC measurement oxygen sensor pH sensor temperature sensor titrator theme NODC INSTRUMENT TYPES THESAURUS continuous current measurements in situ physical time series profile water chemistry theme NODC OBSERVATION TYPES THESAURUS HI'IALAKAI theme NODC PLATFORM NAMES THESAURUS CORAL REEF STUDIES Coral Reef Conservation Program National Coral Reef Monitoring Program theme NODC PROJECT NAMES THESAURUS US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division theme NODC SUBMITTING INSTITUTION NAMES THESAURUS COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > American Samoa (14S170W0000) COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Tutuila Island (14S170W0016) OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000) OCEAN BASIN > Pacific Ocean > American Samoa > Tutuila Island (14S170W0016) place CoRIS Place Thesaurus South Pacific Ocean place NODC SEA AREA NAMES THESAURUS ADCP CRED CREP CTD Coral Reef Ecosystem Division Coral Reef Ecosystem Program ESD Ecosystem Sciences Division NCRMP National Coral Reef Monitoring Program PIFSC PUC Pacific Islands Fisheries Science Center RAMP REA Rapid Ecological Assessment Reef Assessment and Monitoring Program diel programmable underwater collector water samples theme DOC/NOAA/NMFS/PIFSC > Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian American Samoa project InPort otherRestrictions Cite As: Pacific Islands Fisheries Science Center, [Date of Access]: National Coral Reef Monitoring Program: Diel seawater carbonate chemistry observations from a suite of instrumentation deployed at coral reef sites at Tutuila Island, American Samoa in 2015 and 2018 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/54928. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: None otherRestrictions Use Constraints: Please cite PIFSC Ecosystem Sciences Division (ESD) when using the data. Suggested citation: Ecosystem Sciences Division; Pacific Islands Fisheries Science Center, 2021: National Coral Reef Monitoring Program: Diel seawater carbonate chemistry observations from a suite of instrumentation deployed at coral reef sites at Tutuila Island, American Samoa in 2015 and 2018, https://www.fisheries.noaa.gov/inport/item/54928. otherRestrictions Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. unclassified Not applicable Not applicable National Coral Reef Monitoring Program: Diel seawater carbonate chemistry observations from a suite of instrumentation deployed at coral reef sites across the Hawaiian Archipelago since 2016 NOAA/NMFS/EDM 54894 series 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 NOAA/NMFS/EDM 54927 series National Coral Reef Monitoring Program: Diel seawater carbonate chemistry observations from a suite of instrumentation deployed at coral reef sites in the Pacific Remote Islands Marine National Monument since 2015 NOAA/NMFS/EDM 54926 series NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 54928 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/pifsc/dmp/pdf/54928.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference eng; US oceans Raw data are downloaded from the instruments, processed in R, and migrated to the PIFSC Oracle database. Water sample data is stored in an MS Access database. Tutuila Island, American Samoa -170.7631 -170.564 -14.3635 -14.2854 Extent of diel survey sites at Tutuila, American Samoa during the ASRAMP cruise (HA1501) in 2015. Associated REA Sites: TUT-73 and TUT-75. UTC date range of diel surveys at REA site TUT-73 at Tutuila Island during ASRAMP 2015 | Currentness: Ground Condition 2015-03-27 2015-03-29 UTC date range of diel surveys at REA site TUT-75 at Tutuila Island during ASRAMP 2015 | Currentness: Ground Condition 2015-03-06 2015-03-07 Associated REA Site TUT-74 on Tutuila Island, American Samoa. -170.812 -170.802 -14.2946 -14.2846 Extent of diel survey sites at Tutuila, American Samoa during the ASRAMP cruise (HA1801) in 2018. REA Site TUT-74 UTC date range of diel surveys at REA site TUT-74 at Tutuila Island during ASRAMP 2018 | Currentness: Ground Condition 2018-06-23 2018-07-17 The NOAA National Coral Reef Monitoring Program (NCRMP) details a long-term approach to provide an ecosystem perspective via monitoring climate, fish, benthic, and socioeconomic variables in a consistent and integrated manner. The NCRMP is intended to coordinate various NOAA Coral Reef Conservation Program (CRCP) biological, physical, and human dimensions activities into a cohesive NOAA-wide effort. Through the implementation of the NCRMP, NOAA will be able to clearly and concisely communicate results of national-scale monitoring to national, state, and territorial policy makers, resource managers, and the public on a periodic basis. NCRMP provides a framework for conducting sustained observations of biological, climate, and socioeconomic indicators at 10 priority coral reefs across the U.S. and its territories. This integrated approach consolidates monitoring of coral reefs under a uniform method in the Pacific, Atlantic, Caribbean, and the Gulf of Mexico for the first time. NCRMP is funded by the CRCP and supported by NOAA Fisheries, NOAA National Centers for Coastal Ocean Science (NCCOS), NOAA's Atlantic Oceanographic & Meteorological Laboratory (AOML), NOAA Coral Reef Watch, and many other partners. The Pacific Islands Fisheries Science Center (PIFSC), Ecosystem Sciences Division (ESD) at NOAA Fisheries is leading in-situ climate monitoring in the U.S. Pacific Islands Region as part of the ongoing Pacific Reef Assessment and Monitoring Program (RAMP). The climate component of NCRMP in the Pacific provides a comprehensive view of climate change impacts on coral reef ecosystems and helps identify areas of resilience and vulnerability. The key indicators used to identify and monitor climate-driven trends include 1) thermal stress caused by changes in sea temperature, 2) ocean acidification resulting from changes in carbonate chemistry, and 3) ecological impacts by collecting data on coral growth rates, erosion, and community structure to understand the impacts of thermal stress and ocean acidification on the ecosystem. Each year, ESD scientists work closely with CRCP and partners during Pacific RAMP missions to collect data using moored oceanographic (subsurface temperature recorders) and ecological (calcification accretion units [CAUs] and autonomous reef monitoring structures [ARMS]) instruments stationed at fixed sites in the Pacific Ocean, and water samples collected by divers. The in-situ data and satellite-based observations are also used in modeling efforts. Innovative analysis techniques are used to develop products that give fellow scientists, managers, decision makers and the public a better understanding of a region's resources and how they are changing over time. false eng false Data Table Spreadsheet ESD_DS_DataDict_2018_AMSM_ADCP 2021-08-03 publication ESD_DS_DataDict_2018_AMSM_SUMMARY 2021-08-03 publication ESD_DS_DataDict_2018_AMSM_CTD 2021-08-03 publication ESD_DS_DataDict_2018_AMSM_H2O 2021-08-03 publication ESD_DS_DataDict_2018_AMSM_PH 2021-08-03 publication ESD_DS_DataDict_2018_AMSM_DO 2021-08-03 publication CSV - Comma Separated Values (Text) CSV - Comma Separated Values (Text) CSV - Comma Separated Values (Text) CSV - Comma Separated Values (Text) CSV - Comma Separated Values (Text) CSV - Comma Separated Values (Text) CSV - Comma Separated Values (Text) CSV - Comma Separated Values (Text) CSV - Comma Separated Values (Text) CSV - Comma Separated Values (Text) CSV - Comma Separated Values (Text) NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact WWW:LINK-1.0-http--link NCEI Contact Information Information for contacts at NCEI. information distributor https://accession.nodc.noaa.gov/0186951 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2015_AMSM_SUMMARY Summary of the diel suite deployment in 2015 at REA Site TUT-75 and TUT-73, with information on the cruise and specific sites, as well as instruments and sampling intervals; different instruments could be deployed at different sites or instruments could have malfunctioned. download https://accession.nodc.noaa.gov/0240606 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2018_AMSM Directory folder that contains all instrument datasets as well as the summary file for the diel suite deployment in American Samoa during ASRAMP in 2018. download https://accession.nodc.noaa.gov/0240606 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2018_AMSM_PH Instrument data from pH sensor in diel suite deployed during ASRAMP2018 at REA Site TUT-74, where data exists. download https://accession.nodc.noaa.gov/0186951 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2015_AMSM_CTD Instrument data from CTD sensor in diel suite deployed during ASRAMP2015 download https://accession.nodc.noaa.gov/0240606 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2018_AMSM_H2O Calculated carbonate chemistry data from the water samples collected with diel suite deployment in American Samoa in 2018 at site TUT-74. Includes columns as necessary for outsourcing the water sample analysis. Refer to data dictionary for details. download https://accession.nodc.noaa.gov/0240606 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2018_AMSM_SUMMARY Summary of the diel suite deployment in 2018 with information on the cruise and specific sites, as well as instruments and sampling intervals; different instruments could be deployed at different sites or instruments could have malfunctioned. download https://accession.nodc.noaa.gov/0240606 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2018_AMSM_ADCP ADCP Instrument data deployed with diel suite deployment in American Samoa in 2018 at site TUT-74, where data exists. download https://accession.nodc.noaa.gov/0186951 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2015_AMSM_H2O Instrument data as well as calculated carbonate chemistry data from water samples collected with diel suite deployment during ASRAMP2015 download https://accession.nodc.noaa.gov/0186951 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2015_AMSM Directory folder that contains all instrument datasets as well as the summary file for the diel suite deployment in American Samoa during ASRAMP in 2015. download https://accession.nodc.noaa.gov/0186951 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2015_AMSM_ADCP Instrument data from ADCP in diel suite deployed during ASRAMP2015 download https://accession.nodc.noaa.gov/0186951 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2015_AMSM_PH Instrument data from pH sensor in diel suite deployed during ASRAMP2015 download https://accession.nodc.noaa.gov/0240606 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2018_AMSM_CTD CTD Instrument data deployed with diel suite deployment in American Samoa in 2018 at site TUT-74. Includes depth as calculated from pressures as logged by CTD. download https://accession.nodc.noaa.gov/0240606 WWW:LINK-1.0-http--link ESD_NCRMP_DS_2018_AMSM_DO Dissolved oxygen data from the SBE-43 oxygen sensor with the diel suite deployment in American Samoa in 2018 at site TUT-74,. Sampling Interval and percent saturation columns are included for diel suite deployments beginning 2019, when a stand-alone DO logger was included to collect DO data on alternating diel suite deployments with the SBE-43 oxygen sensor. download dataset Representativeness Seawater carbonate chemistry at the benthos is dynamic and driven by physical and biological processes occurring at time scales of minutes to days. The measurements and analyses from this instrument suite is representative of the water column chemistry at the time of measurement, but this highly variable environment allows for a fairly wide distribution of measured values. Accuracy Water samples: accuracy of seawater carbonate chemistry laboratory analysis is explained in detail in Dickson et al (2007), SOP #2: Determination of total dissolved inorganic carbon in sea water, and SOP #3b: Determination of total alkalinity in sea water using an open-cell titration. Satlantic SeaFET Ocean pH sensor: measurement range: 6.5-9.0 pH; salinity range: 2-40 psu; accuracy: +/- 0.05 pH; precision: better than 0.001 pH; resolution: 0.0001 pH; stability: 0.005 pH/mo SBE-19plus CTD sensor: Conductivity - measurement range: 0-9 S/m; accuracy: +/- 0.0005 S/m; stability: 0.0003 S/m per month; resolution: 0.00005 S/m; Temperature - measurement range: -5-35 deg C; accuracy: +/-0.005 deg C; stability: 0.0002 deg C per month; resolution: 0.0001 deg C; Pressure - measurement range: 0-600 m; accuracy: +/- 0.1%; stability: +/- 0.1%; resolution: 0.002% Nortek Acoustic Doppler Current Profiler 1MHz: Profiling range: 12-25 m; accuracy: +/- 1% SBE-43 oxygen sensor: Measurement range: 120% surface saturation; accuracy: +/- 2% of saturation; stability: 0.5% per 1000 hours Analytical Accuracy For some deployments, paired water samples are collected simultaneously at the benthos and 1.5 meters above the seafloor. Completeness Measure The entire suite of instrumentation is deployed during diel surveys; however, various issues can occur with any one or several of the instruments during the deployment thereby limiting the data recovered. While PUCs are programmed to collect water on this regular sampling schedule, issues with the pumps can occasionally result in missing samples for some of the time steps. Refer to the summary file enclosed with the data package for details. Field Precision Redundant data are collected to ensure accuracy of the methods/instrumentation. pH is captured from the discrete water samples and pH sensor. Pressure is captured by the ADCP and the CTD. Temperature is captured by the pH sensor and the CTD, For some deployments, paired water samples are collected simultaneously at the benthos and 1.5 meters above the seafloor. Completeness Report All analyzed samples and measured values are included. NULL values in the data, where they exist, indicate that the observation/analysis was not conducted for the sample record where it appears. Conceptual Consistency The data are very consistent, sample collection and processing protocols detailed in Dickson et al (2007) are adhered to rigorously, both in the field (SOP #1) and in the laboratory (SOP #2 and #3b). The ocean acidification diel suite is a collection of instruments deployed by SCUBA divers onto the seafloor that makes autonomous measurements and collects seawater samples. For a typical deployment, the diel suite consists of: 1 Sea Bird Electronics (SBE)-19plus CTD, 1 Nortek Acoustic Doppler Current Profiler (ADCP), 1 Satlantic SeaFET Ocean pH sensor, and up to 9 Programmable Underwater Collectors (PUCs), where each PUC collects 1 water sample at a 3- or 4-hour interval over a minimum 24-hour period. All instruments are weighted or zip-tied to rubble on the seafloor, or both, to secure the position of the instrumentation for the duration of the deployment. An oxygen sensor was included in the diel suite deployment from 2018. Water samples collected with Programmable Underwater Collectors (PUC) Developed by Dr. Chris Langdon's laboratory at the University of Miami, PUCs are computerized timers attached to a low-power peristaltic pump. An array of PUCs collects water samples at 3- or 4-hour intervals over the course of at least 24-hours, usually starting at 12:00 pm local time on day 1 and ending at 12:00 pm on day 2. While PUCs are programmed to collect water on this regular sampling schedule, issues with the pumps can occasionally result in missing samples for some of the time steps. For some deployments, paired water samples were collected simultaneously at the benthos and 1.5 meters above the seafloor. Samples are collected underwater in tedlar bags pre-poisoned with mercuric chloride and transferred to glass bottles within a few hours of recovery. Water samples are analyzed for DIC using a coulometer (SOP #2) and for TA using a titrator (SPO #3b) by the NOAA Pacific Marine Environmental Laboratory. On occasion, poor pump performance results in half-filled sample bags. These samples are only analyzed for TA due to insufficient sample volume for DIC analysis. Full carbon system chemistry values (including pH, pCO2, and aragonite saturation state) are derived from DIC/TA and salinity/temperature/pressure data from a co-deployed CTD using the R package seacarb. Discrete sample pH data are compared to SeaFET pH data. Barkley, Hannah C hannah.barkley@noaa.gov processor Acoustic Doppler Current Profiler (ADCP) sensor The diel suite includes either a 1.0 MHz or a 2.0 MHz side-looking ADCP (1.0 MHz ranges 20-m depth, while the 2.0 MHz ranges 10-m). ADCP measurements are collected at 2 minute intervals and binned by height above the sensor. Each height bin is represented in the data set as the upper limit of the bin height above the sensor on the seafloor (e.g., a 1.4 m bin represents current data collected between 0.4 m and 1.4 m above the ADCP). ADCP data include a blanking region, or a small distance in front of the transducer in which measurements cannot be made, of 0.2-0.4 m. Current data are grouped into 1-m height bins. Raw data downloaded from the ADCP are processed in R using the oce package. XYZ coordinate data are converted to ENU (east-north-up) coordinate system. Current speed is calculated as the square root of the sum of the squared u and v velocities and direction as the arctan(v/u). Data are trimmed to a maximum height bin for each time step using pressure data to remove above-water signal. As a result, NULL values may exist for larger height bins above the surface of the water due to waves and tides. Barkley, Hannah C hannah.barkley@noaa.gov processor Conductivity-Temperature-Depth (CTD) sensor CTD data are collected by a Sea Bird Electronics 19plus v2 SeaCAT every 5 minutes. Data are uploaded as HEX files, converted to CNV using SBE Data Processing Software, and converted to CSV using the 'oce' package in R. Barkley, Hannah C hannah.barkley@noaa.gov processor SeaFET pH sensor The SeaFET pH measures in-situ pH using a solid state ISFET sensor with an AgCl external reference electrode. The electrode is conditioned in running seawater up to a week prior to deployment and stored in artificial seawater between deployments. pH data are collected in bursts of 30 measurements every 5 minutes. The SeaFET is co-deployed with a CTD, and temperature and salinity values from the CTD time series are used to correct the raw pH time series. The SeaFET derives pH from both internal and external potentiometric cells, but only external pH is reported. SeaFET pH values are compared to pH values calculated from discrete TA and DIC samples collected at the same time and location. Barkley, Hannah C hannah.barkley@noaa.gov processor Oxygen sensor An SBE-43 oxygen sensor is tethered to the SBE-19plus CTD sensor to provide DO readings in mg/L of diel suite deployment. Source Contribution: Dickson et al (2007) Protocols to collect, process, and analyze water samples for DIC and TA: SOP 1: Water Sampling for the parameters of the oceanic carbon dioxide system SOP 2: Determination of total dissolved inorganic carbon in sea water SOP 3b: Determination of total alkalinity in sea water using an open-cell titration Dickson, A.G., Sabine, C.L. and Christian, J.R. (Eds.) 2007. Guide to best practices for ocean CO2 measurements. PICES Special Publication 3, 191 pp. 2007-10-01 publication https://www.nodc.noaa.gov/ocads/oceans/Handbook_2007.html WWW:LINK-1.0-http--link Ocean Carbon Data System (OCADS), Access Data Guide to Best Practices for Ocean CO2 Measurements information Source Contribution: Data processing protocol SOP for instrument data processing using the R package occ 2019-05-31 publication Hannah Barkley https://rpubs.com/hbarkley/occ_SOP WWW:LINK-1.0-http--link RPubs Easy web publishing from R information originator otherRestrictions otherRestrictions Access Constraints: None | Use Constraints: None Aquadopp Profiler acoustic doppler current profiler (ADCP) Current profiler: Nortek Aquadopp Profiler 1 MHz or 2 MHz. Small and compact, with up to 25 m or 40 m current profiling range, respectively. Programmable Underwater Collector (PUC) Water Sampler Programmable Underwater Collectors (PUC) are computerized timers attached to a low-power peristaltic pump to collect water samples at episodic intervals (i.e., every 4 hrs over a 24-hr period). Designed and Developed by Dr. Chris Langdon’s laboratory at the University of Miami, Rosenstiel School of Marine and Atmospheric Science. SBE 19plus V2 conductivity, temperature, depth The SBE 19plus V2 (Version 2) SEACAT Profiler measures conductivity, temperature, and pressure (depth) and provides high accuracy and resolution, reliability, and ease-of-use for a wide range of research, monitoring, and engineering applications. The pump-controlled, TC-ducted flow configuration minimizes salinity spiking caused by ship heave and allows for slow descent rates without slowing sensor responses, improving dynamic accuracy and resolving small scale structure in the water column. SeaFET v2 Ocean pH Sensor SeaFET v2 Ocean pH Sensor measures in-situ pH using a solid state ISFET sensor with an AgCl external reference electrode. SBE 43 DO Sensor Dissolved Oxygen Sensor The SBE 43 is an individually calibrated, high-accuracy oxygen sensor to assist in critical hypoxia and ocean stoichiometric oxygen chemistry research on a variety of profiling and moored platforms. The SBE 43 is designed for use in a CTD’s pumped flow path, providing optimal correlation with CTD measurements. Elapsed time between the CTD and associated oxygen measurement is easily quantified, and corrected for, in post-processing. The black plenum and plumbing’s black tubing blocks light, reducing in-situ algal growth. Plumbing isolates the SBE 43 from continuous exposure to the external environment, allowing trapped water to go anoxic and minimizing electrolyte consumption between samples for moored deployments. Diel Suite The Ocean Acidification Diel Suite is not a physical platform (boat, buoy, etc.), but rather a collection of instruments deployed together on the seafloor that makes autonomous measurements and collects seawater samples, which allows for the quantification of 24-hr variability in seawater carbonate chemistry present at the reef. Aquadopp Profiler acoustic doppler current profiler (ADCP) Current profiler: Nortek Aquadopp Profiler 1 MHz or 2 MHz. Small and compact, with up to 25 m or 40 m current profiling range, respectively. Programmable Underwater Collector (PUC) Water Sampler Programmable Underwater Collectors (PUC) are computerized timers attached to a low-power peristaltic pump to collect water samples at episodic intervals (i.e., every 4 hrs over a 24-hr period). Designed and Developed by Dr. Chris Langdon’s laboratory at the University of Miami, Rosenstiel School of Marine and Atmospheric Science. SBE 19plus V2 conductivity, temperature, depth The SBE 19plus V2 (Version 2) SEACAT Profiler measures conductivity, temperature, and pressure (depth) and provides high accuracy and resolution, reliability, and ease-of-use for a wide range of research, monitoring, and engineering applications. The pump-controlled, TC-ducted flow configuration minimizes salinity spiking caused by ship heave and allows for slow descent rates without slowing sensor responses, improving dynamic accuracy and resolving small scale structure in the water column. SeaFET v2 Ocean pH Sensor SeaFET v2 Ocean pH Sensor measures in-situ pH using a solid state ISFET sensor with an AgCl external reference electrode. SBE 43 DO Sensor Dissolved Oxygen Sensor The SBE 43 is an individually calibrated, high-accuracy oxygen sensor to assist in critical hypoxia and ocean stoichiometric oxygen chemistry research on a variety of profiling and moored platforms. The SBE 43 is designed for use in a CTD’s pumped flow path, providing optimal correlation with CTD measurements. Elapsed time between the CTD and associated oxygen measurement is easily quantified, and corrected for, in post-processing. The black plenum and plumbing’s black tubing blocks light, reducing in-situ algal growth. Plumbing isolates the SBE 43 from continuous exposure to the external environment, allowing trapped water to go anoxic and minimizing electrolyte consumption between samples for moored deployments.