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National Coral Reef Monitoring Program: Shallow Water Conductivity-Temperature-Depth (CTD) Profiles for select locations across the Mariana Archipelago since 2014

Published by Pacific Islands Fisheries Science Center | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 02, 2026 at 11:21 PM | Dataset Last Updated: January 01, 2026 at 12:00 AM
Nearshore and offshore Conductivity-Temperature-Depth (CTD) casts were collected at sites in the Hawaiian Archipelago as part of the National Coral Reef Monitoring Program (NCRMP). These surveys were conducted by the NOAA Pacific Islands Fisheries Science Center (PIFSC), Ecosystem Sciences Division (ESD; formerly the Coral Reef Ecosystem Division) during ESD-led NCRMP missions in the Mariana Archipelago in 2014, 2017, 2022, and 2025. The CTD casts provide vertical profiles (downcast only) of water column conductivity, temperature, and pressure with calculated depth, salinity, and water density. Nearshore CTD (Sea-Bird Electronics SBE19plus in 2014 and 2017; RBR Concerto 3 in 2022 and 2025 casts were collected from a small boat using a hand line and held just under the surface for 1 minute. Data were collected by lowering the CTD in profiling mode at an even pace (descent rate ~0.5 to 0.75 meters per second) to a maximum depth of ~30 m. Offshore (~10-15km from land) CTD profiles were collected from the ship using a SBE19plus (2014 and 2017), RBR concerto 3 (2022 and 2025). Offshore casts were typically conducted to a maximum depth of ~10m, though deeper profiles (down to ~500m) were collected at some locations and years. Data processing was performed using Sea-Bird Scientific SBE or RBR Ruskin Data Processing Software and the R package "oce".

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DOC/NOAA/NMFS/PIFSC/ESD > Ecosystem Sciences Division, Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > REEF > CORAL REEF EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY > CONDUCTIVITY PROFILES EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY EARTH SCIENCE > OCEANS > SALINITY/DENSITY > OCEAN SALINITY OCEAN > PACIFIC OCEAN > WESTERN PACIFIC OCEAN > MICRONESIA > GUAM

Complete Metadata
@type dcat:Dataset
accessLevel non-public
contactPoint 
{
  "fn": "Barkley, Hannah C",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:hannah.barkley@noaa.gov"
}
describedByType application/octet-steam
description Nearshore and offshore Conductivity-Temperature-Depth (CTD) casts were collected at sites in the Hawaiian Archipelago as part of the National Coral Reef Monitoring Program (NCRMP). These surveys were conducted by the NOAA Pacific Islands Fisheries Science Center (PIFSC), Ecosystem Sciences Division (ESD; formerly the Coral Reef Ecosystem Division) during ESD-led NCRMP missions in the Mariana Archipelago in 2014, 2017, 2022, and 2025. The CTD casts provide vertical profiles (downcast only) of water column conductivity, temperature, and pressure with calculated depth, salinity, and water density. Nearshore CTD (Sea-Bird Electronics SBE19plus in 2014 and 2017; RBR Concerto 3 in 2022 and 2025 casts were collected from a small boat using a hand line and held just under the surface for 1 minute. Data were collected by lowering the CTD in profiling mode at an even pace (descent rate ~0.5 to 0.75 meters per second) to a maximum depth of ~30 m. Offshore (~10-15km from land) CTD profiles were collected from the ship using a SBE19plus (2014 and 2017), RBR concerto 3 (2022 and 2025). Offshore casts were typically conducted to a maximum depth of ~10m, though deeper profiles (down to ~500m) were collected at some locations and years. Data processing was performed using Sea-Bird Scientific SBE or RBR Ruskin Data Processing Software and the R package "oce".
distribution 
[
  {
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    "mediaType": "text/html",
    "description": "Shallow CTD profiles collected across the Mariana Archipelago by the PIFSC Ecosystem Sciences Division during MARAMP 2017 (HA1701). Data include conductivity, temperature, pressure, depth, salinity, and density.",
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  {
    "@type": "dcat:Distribution",
    "title": "ESD_NCRMP_CTD_2014_CNMI.csv",
    "accessURL": "https://accession.nodc.noaa.gov/0161168",
    "mediaType": "text/html",
    "description": "Shallow CTD profiles collected across the Mariana Archipelago by the PIFSC Ecosystem Sciences Division during MARAMP 2014 (HA1401). Data include conductivity, temperature, pressure, depth, salinity, and density.",
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  {
    "@type": "dcat:Distribution",
    "title": "ESD_NCRMP_CTD_2022_MARIAN.csv",
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    "mediaType": "text/html",
    "description": "Shallow CTD profiles collected across the Mariana Archipelago by the PIFSC Ecosystem Sciences Division during MARAMP 2022 (RA2201). Data include conductivity, temperature, pressure, depth, salinity, and density. Region name was updated from CNMI to MARIAN for jurisdictional accuracy.",
    "describedByType": "application/octet-stream"
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    "@type": "dcat:Distribution",
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    "accessURL": "https://www.ncei.noaa.gov/archive/accession/0314033",
    "mediaType": "text/html",
    "description": "Shallow CTD profiles collected across the Mariana Archipelago by the PIFSC Ecosystem Sciences Division during NCRMP 2025 (SE2503). Data include conductivity, temperature, pressure, depth, salinity, and density. Region name was updated from CNMI to MARIAN for jurisdictional accuracy.",
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    "description": "Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. 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",
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identifier https://data.noaa.gov/waf/NOAA/nmfs/pifsc/iso/xml/36820.xml
issued 2016-12-01T00:00:00.000+00:00
keyword 
[
  "DOC/NOAA/NMFS/PIFSC/ESD > Ecosystem Sciences Division, Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
  "EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > REEF > CORAL REEF",
  "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY > CONDUCTIVITY PROFILES",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > OCEAN SALINITY",
  "OCEAN > PACIFIC OCEAN > WESTERN PACIFIC OCEAN > MICRONESIA > GUAM",
  "OCEAN > PACIFIC OCEAN > WESTERN PACIFIC OCEAN > MICRONESIA > NORTHERN MARIANA ISLANDS",
  "CTD > Conductivity, Temperature, Depth",
  "743",
  "National Coral Reef Monitoring Program",
  "Numeric Data Sets > Oceanography",
  "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 Physical",
  "EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs",
  "EARTH SCIENCE > Oceans > Ocean Pressure > Sea Level Pressure",
  "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",
  "CONDUCTIVITY",
  "DEPTH - SENSOR",
  "PRESSURE - WATER [HYDROSTATIC PRESSURE]",
  "SALINITY",
  "SIGMA-T",
  "WATER TEMPERATURE",
  "in situ",
  "physical",
  "profile",
  "CORAL REEF STUDIES",
  "Coral Reef Conservation Program",
  "NODC Ocean Acidification Scientific Data Stewardship",
  "National Coral Reef Monitoring Program",
  "US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program",
  "US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Agrihan Island > Agrihan Island (18N145E0002)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Aguihan > Aguihan Island (Aguijan) (14N145E0006)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Alamagan Island > Alamagan Island (17N145E0002)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Asuncion Island > Asuncion Island (19N145E0001)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Farallon de Pajaros > Farallon de Pajaros (20N144E0001)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Guguan > Guguan Island (17N145E0001)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Maug > Maug Island (20N145E0001)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Northern Mariana Islands > Northern Mariana Islands ( CNMI ) (18N146E0000)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Pagan > Pagan Island (18N145E0001)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Rota > Rota Island ( Luta ) (14N145E0007)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Saipan > Saipan Island (15N145E0002)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Sarigan Island > Sarigan Island (16N145E0003)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Tinian > Tinian Island (14N145E0005)",
  "COUNTRY/TERRITORY > United States of America > Guam > Guam (13N144E0000)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Agrihan Island > Agrihan Island (18N145E0002)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Aguihan Island Reefs > Aguihan Island (Aguijan) (14N145E0006)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Alamagan Island > Alamagan Island (17N145E0002)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Asuncion Island > Asuncion Island (19N145E0001)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Farallon de Pajaros > Farallon de Pajaros (20N144E0001)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Guam (13N144E0000)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guguan Island > Guguan Island (17N145E0001)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Mariana Archipelago > Northern Mariana Islands ( CNMI ) (18N146E0000)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Maug Island > Maug Island (20N145E0001)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Pagan Island > Pagan Island (18N145E0001)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Rota Island > Rota Island ( Luta ) (14N145E0007)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Saipan Island > Saipan Island (15N145E0002)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Sarigan Island > Sarigan Island (16N145E0003)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Tinian Island Reefs > Tinian Island (14N145E0005)",
  "Marianas Trench Marine National Monument",
  "NW Pacific",
  "CTD",
  "HI'IALAKAI",
  "OSCAR ELTON SETTE",
  "RAINIER",
  "SMALL BOAT",
  "CRED",
  "CREP",
  "Climate Change",
  "Coral Reef Ecosystem Division",
  "Coral Reef Ecosystem Program",
  "ESD",
  "Ecosystem Sciences Division",
  "NCRMP",
  "National Coral Reef Monitoring Program",
  "PIFSC",
  "Pacific Islands Fisheries Science Center",
  "RAMP",
  "Reef Assessment and Monitoring Program",
  "CNMI",
  "Commonwealth of the Northern Mariana Islands",
  "Mariana Archipelago",
  "Mariana Islands",
  "Marianas",
  "DOC/NOAA/NMFS/PIFSC > Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
  "Marianas Archipelago"
]
landingPage https://www.fisheries.noaa.gov/inport/item/36820
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2026-01-01T00:00:00.000+00:00
publisher 
{
  "name": "Pacific Islands Fisheries Science Center",
  "@type": "org:Organization"
}
rights otherRestrictions, unclassified
spatial 146.0047599,13.05713,144.6254,20.55072
temporal 2014-03-24T00:00:00+00:00/2014-05-05T00:00:00+00:00
theme 
[
  "geospatial"
]
title National Coral Reef Monitoring Program: Shallow Water Conductivity-Temperature-Depth (CTD) Profiles for select locations across the Mariana Archipelago since 2014

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