Skip to main content
U.S. flag

An official website of the United States government

Water Chemistry and Shallow Water Conductivity-Temperature-Depth (CTD) Profiles for select locations across Batangas, Philippines from 2012 to 2015

Published by Pacific Islands Fisheries Science Center | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: May 10, 2026 at 05:59 AM | Dataset Last Updated: October 01, 2021 at 12:00 AM
The water chemistry data described here are from discrete water samples collected by the NOAA Coral Reef Ecosystem Program (CREP), to assess the seawater carbonate systems at fixed climate survey sites located in coral reef habitats in the Philippines in 2012, 2013, and 2015. Climate sites were established by CREP to assess multiple features of the coral reef environment (in addition to the data described herein) over time. In 2015, conductivity-temperature-depth (CTD) casts were also performed to characterize the spatial structure of the physical and chemical properties of the ocean environment influencing the living coral reef resources. These water chemistry and CTD data provide a baseline for tracking reef carbonate system changes due to globally increasing levels of atmospheric carbon dioxide. The data can be accessed online via the NOAA National Centers for Environmental Information (NCEI) Ocean Archive. To survey water chemistry, SCUBA divers collected two discrete water samples from each site; one at the reef and one at the surface directly above the reef. The samples were processed by CREP and sent to NOAA Pacific Marine Environmental Laboratory (PMEL) to be analyzed for total alkalinity (TA) and dissolved inorganic carbon (DIC). From these constituents, alongside temperature, salinity, and depth data, other parameters of the seawater carbonate system can be calculated. CTD data are collected by lowering the CTD in a profiling mode from a small boat, resulting in vertical profiles (max 18 meter depth, downcast only) of water column conductivity, temperature, and pressure. Vertical profiles of temperature, salinity, and turbidity resulting from CTD casts provide indicators for local seawater chemistry changes. In addition to these discrete samples, water samples were collected as part of CREP's ocean acidification diurnal suite, which also includes vertical profiles from CTD casts, current direction and magnitude from an Acoustic Doppler Current Profiler, and pH from an SeaFET sensor. The data associated with the diurnal suite are documented and archived separately; The data associated with the diurnal suite is documented and archived separately with metadata available at https://www.fisheries.noaa.gov/inport/item/45954.

Resources

5 resources available

Find Related Datasets

Search by Tags

Click any tag below to search for similar datasets

483 Climate, Biodiversity and Fisheries in the Coral Triangle: Embracing the E in Ecosystem Approaches to Fisheries Management Numeric Data Sets > Oceanography Numeric Data Sets > Water Quality 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 > Baseline studies EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > In Situ Physical

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 The water chemistry data described here are from discrete water samples collected by the NOAA Coral Reef Ecosystem Program (CREP), to assess the seawater carbonate systems at fixed climate survey sites located in coral reef habitats in the Philippines in 2012, 2013, and 2015. Climate sites were established by CREP to assess multiple features of the coral reef environment (in addition to the data described herein) over time. In 2015, conductivity-temperature-depth (CTD) casts were also performed to characterize the spatial structure of the physical and chemical properties of the ocean environment influencing the living coral reef resources. These water chemistry and CTD data provide a baseline for tracking reef carbonate system changes due to globally increasing levels of atmospheric carbon dioxide. The data can be accessed online via the NOAA National Centers for Environmental Information (NCEI) Ocean Archive. To survey water chemistry, SCUBA divers collected two discrete water samples from each site; one at the reef and one at the surface directly above the reef. The samples were processed by CREP and sent to NOAA Pacific Marine Environmental Laboratory (PMEL) to be analyzed for total alkalinity (TA) and dissolved inorganic carbon (DIC). From these constituents, alongside temperature, salinity, and depth data, other parameters of the seawater carbonate system can be calculated. CTD data are collected by lowering the CTD in a profiling mode from a small boat, resulting in vertical profiles (max 18 meter depth, downcast only) of water column conductivity, temperature, and pressure. Vertical profiles of temperature, salinity, and turbidity resulting from CTD casts provide indicators for local seawater chemistry changes. In addition to these discrete samples, water samples were collected as part of CREP's ocean acidification diurnal suite, which also includes vertical profiles from CTD casts, current direction and magnitude from an Acoustic Doppler Current Profiler, and pH from an SeaFET sensor. The data associated with the diurnal suite are documented and archived separately; The data associated with the diurnal suite is documented and archived separately with metadata available at https://www.fisheries.noaa.gov/inport/item/45954.
distribution 
                                            [
  {
    "@type": "dcat:Distribution",
    "title": "PMEL_2010_SOP_DICandTA.pdf",
    "accessURL": "https://accession.nodc.noaa.gov/0157633",
    "mediaType": "text/html",
    "description": "Discrete water sample collection protocol,  established by the NOAA Pacific Marine Environmental Laboratory (PMEL).",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "ESD_USAID_H2O_2012-2015_Philippines.csv",
    "accessURL": "https://www.ncei.noaa.gov/archive/accession/0242691",
    "mediaType": "text/html",
    "description": "Carbonate chemistry data from water samples taken from 2012-2015 in the Philippines. Revised in 2021 to amend errors in data.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "ESD_USAID_CTD_CT_2015.csv",
    "accessURL": "https://accession.nodc.noaa.gov/0242952",
    "mediaType": "text/html",
    "description": "Shallow CTD profiles collected from climate survey sites in Batangas, Philippines (Mabini and Tingloy) by the PIFSC Ecosystem Sciences Division in 2015. Data include conductivity, temperature, pressure, depth, salinity, and density. Revised in 2021 to amend errors in data.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "GCMD Keyword Forum Page",
    "accessURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
    "mediaType": "text/html",
    "description": "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",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Full Metadata Record",
    "accessURL": "https://www.fisheries.noaa.gov/inport/item/45817",
    "mediaType": "text/html",
    "description": "View the complete metadata record on InPort for more information about this dataset.",
    "describedByType": "application/octet-stream"
  }
]
identifier https://data.noaa.gov/waf/NOAA/nmfs/pifsc/iso/xml/45817.xml
issued 2021-01-01T00:00:00.000+00:00
keyword 
                                            [
  "483",
  "Climate, Biodiversity and Fisheries in the Coral Triangle: Embracing the E in Ecosystem Approaches to Fisheries Management",
  "Numeric Data Sets > Oceanography",
  "Numeric Data Sets > Water Quality",
  "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 > Baseline studies",
  "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 > Carbon Dioxide",
  "EARTH SCIENCE > Oceans > Ocean Chemistry > Carbonate Chemistry",
  "EARTH SCIENCE > Oceans > Ocean Chemistry > Chemistry Monitoring and Assessment",
  "EARTH SCIENCE > Oceans > Ocean Chemistry > Dissolved Gases",
  "EARTH SCIENCE > Oceans > Ocean Chemistry > Inorganic Carbon",
  "EARTH SCIENCE > Oceans > Ocean Chemistry > Ocean Acidification",
  "EARTH SCIENCE > Oceans > Ocean Chemistry > Oxygen",
  "EARTH SCIENCE > Oceans > Ocean Chemistry > pH",
  "EARTH SCIENCE > Oceans > Ocean Optics > Turbidity",
  "EARTH SCIENCE > Oceans > Ocean Pressure > Sea Level Pressure",
  "EARTH SCIENCE > Oceans > Ocean Temperature > Thermocline > Profile",
  "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",
  "DISSOLVED INORGANIC CARBON (DIC)",
  "PRESSURE - WATER [HYDROSTATIC PRESSURE]",
  "SALINITY",
  "SIGMA-T",
  "TOTAL ALKALINITY (TA)",
  "WATER DENSITY",
  "WATER TEMPERATURE",
  "DISSOLVED OXYGEN",
  "in situ",
  "physical",
  "profile",
  "water chemistry",
  "CORAL REEF STUDIES",
  "Coral Reef Conservation Program",
  "Coral Triangle Initiative",
  "NODC Ocean Acidification Scientific Data Stewardship",
  "US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division; Coral Reef Ecosystem Program",
  "COUNTRY/TERRITORY > Philippines > Batangas > Arthur's Rock (13N120E0002)",
  "COUNTRY/TERRITORY > Philippines > Batangas > Mabini (13N120E0032)",
  "COUNTRY/TERRITORY > Philippines > Batangas > Tingloy (13N120E0009)",
  "COUNTRY/TERRITORY > Philippines > Batangas > Twin Rocks Sanctuary (13N120E0005)",
  "OCEAN BASIN > Pacific Ocean > South China Sea > Balayan Bay > Arthur's Rock (13N120E0002)",
  "OCEAN BASIN > Pacific Ocean > South China Sea > Balayan Bay > Mabini (13N120E0032)",
  "OCEAN BASIN > Pacific Ocean > South China Sea > Balayan Bay > Twin Rocks Sanctuary (13N120E0005)",
  "OCEAN BASIN > Pacific Ocean > South China Sea > Maricaban Island > Tingloy (13N120E0009)",
  "NW Pacific (limit-180)",
  "CTD",
  "CRED",
  "CREP",
  "Climate Change",
  "Coral Reef Ecosystem Division",
  "Coral Reef Ecosystem Program",
  "ESD",
  "Ecosystem Sciences Division",
  "PIFSC",
  "Pacific Islands Fisheries Science Center",
  "USAID",
  "United States Agency for International Development",
  "Arthur's Reef",
  "Batalang Bato",
  "Batong Buhay",
  "CT",
  "Coral Triangle",
  "Koala Reserve Area",
  "Philippines",
  "Twin Rocks",
  "Verde Island Passage",
  "SMALL BOAT",
  "DOC/NOAA/NMFS/PIFSC > Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
  "Baseline data from Climate Stations in Batangas, Philippines from 2012 to 2015"
]
landingPage https://www.fisheries.noaa.gov/inport/item/45817
language 
                                            []
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2021-10-01T00:00:00.000+00:00
publisher 
                                            {
  "name": "Pacific Islands Fisheries Science Center",
  "@type": "org:Organization"
}
rights otherRestrictions, unclassified
spatial 120.8951,13.6587,120.872,13.7281
temporal 2015-05-23T00:00:00+00:00/2015-06-03T00:00:00+00:00
title Water Chemistry and Shallow Water Conductivity-Temperature-Depth (CTD) Profiles for select locations across Batangas, Philippines from 2012 to 2015

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov