Short Citation:
Pacific Islands Fisheries Science Center, 2019: Water chemistry and Conductivity-Temperature-Depth (CTD) profiles at coral reef sites in Batangas, Philippines from discrete surface and bottom water samples collected from 2012 to 2015, https://inport.nmfs.noaa.gov/inport/item/45817.

Item Identification

Title: Water chemistry and Conductivity-Temperature-Depth (CTD) profiles at coral reef sites in Batangas, Philippines from discrete surface and bottom water samples collected from 2012 to 2015
Short Name: Philippines: Water Chemistry & CTD
Status: Completed
Publication Date: 2017
Abstract:

Laboratory experiments reveal calcification rates of crustose coralline algae (CCA) are strongly correlated to seawater aragonite saturation state. Predictions of reduced coral calcification rates, due to ocean acidification, suggest that coral reef communities will undergo ecological phase shifts as calcifying organisms are negatively impacted by changing seawater chemistry.

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.

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.

Additionally 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 observed during climate site surveys. 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 sea water chemistry changes.

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.

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.

Purpose:

The Coral Reef Ecosystem Program (CREP) at NOAA Fisheries is conducting in-situ climate monitoring across the U.S. Pacific Islands Region. Climate monitoring 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 and community structure to understand the impacts of thermal stress and ocean acidification on the ecosystem.

This particular dataset for the Philippines is part of a 3-year project ("Climate, Biodiversity and Fisheries in the Coral Triangle: Embracing the E in Ecosystem Approaches to Fisheries Management") implemented by CREP. This project was funded by NOAA's Coral Reef Conservation Program (CRCP) and the U.S. Agency for International Development (USAID) Regional Development Mission Asia (RDMA) as part of the U.S. Coral Triangle Initiative, with additional support from the Coral Triangle Support Partnership and USAID Philippines.

The goal of the project was to build on CREP's expertise to provide tools and information about climate change, ocean acidification, and their impacts on biodiversity and fisheries that could inform and be incorporated into an Ecosystem Approach to Fisheries Management (EAFM) for the Philippines. CREP worked with local governments, communities, and NGOs to build science capacity by establishing robust observing capabilities and providing hands-on training to initiate collection of climate science information for the Verde Island Passage in the Philippines that can be used toward adaptive EAFM.

Supplemental Information:

The NOAA Coral Reef Ecosystem Program (CREP) traveled to the Verde Island Passage region of the Philippines in 2012 to deploy moored oceanographic (subsurface temperature recorders [STRs]) and ecological (calcification accretion units [CAUs] and autonomous reef monitoring structures [ARMS]) instrumentation, to collect surface and bottom water samples, and to conduct benthic photo-quadrat surveys, which included the collection of benthic images; in 2013 to collect additional water samples; and again in 2015 to recover the instrumentation and to collect another round of water samples and benthic images. All activities were conducted by SCUBA divers at five locations in the municipalities of Mabini and Tingloy, including Batong Buhay, Koala Reserve Area, Arthur's Reef, Twin Rocks, and Batalang Bato. At each of the five locations, a shallow and deep survey site was established for a total of 10 survey sites.

Keywords

Theme Keywords

Thesaurus Keyword
CoRIS Discovery Thesaurus Numeric Data Sets > Water Quality
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Baseline studies
CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > In Situ Physical
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Chemistry > Alkalinity
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Chemistry > Carbon Dioxide
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Chemistry > Carbonate Chemistry
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Chemistry > Chemistry Monitoring and Assessment
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Chemistry > Dissolved Gases
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Chemistry > Inorganic Carbon
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Chemistry > Ocean Acidification
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Chemistry > Oxygen
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Chemistry > pH
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Optics > Turbidity
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Temperature > Thermocline > Profile
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Temperature > Water Temperature
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Salinity/Density > Conductivity
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Salinity/Density > Density
CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Salinity/Density > Salinity
CRCP Project 483
CRCP Project Climate, Biodiversity and Fisheries in the Coral Triangle: Embracing the E in Ecosystem Approaches to Fisheries Management
ISO 19115 Topic Category 014
ISO 19115 Topic Category Oceans
NODC DATA TYPES THESAURUS Conductivity
NODC DATA TYPES THESAURUS DEPTH - OBSERVATION
NODC DATA TYPES THESAURUS DISSOLVED INORGANIC CARBON (DIC)
NODC DATA TYPES THESAURUS PRESSURE - WATER
NODC DATA TYPES THESAURUS SALINITY
NODC DATA TYPES THESAURUS TOTAL ALKALINITY (TA)
NODC DATA TYPES THESAURUS WATER DENSITY
NODC DATA TYPES THESAURUS WATER TEMPERATURE
NODC DATA TYPES THESAURUS DISSOLVED OXYGEN
NODC OBSERVATION TYPES THESAURUS profile
NODC Observation Types Thesaurus water chemistry
NODC Project Names Thesaurus Coral Reef Conservation Program
NODC Project Names Thesaurus CORAL REEF STUDIES
NODC Project Names Thesaurus Coral Triangle Initiative
NODC Submitting Institution Names Thesaurus US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division; Coral Reef Ecosystem Program
None conductivity-temperature-depth
None Coral Reef Ecosystem Division
None Coral Reef Ecosystem Program
None CRED
None CREP
None CTD
None Pacific Islands Fisheries Science Center
None PIFSC
None United States Agency for International Development
None USAID

Spatial Keywords

Thesaurus Keyword
CoRIS Place Thesaurus COUNTRY/TERRITORY > Philippines > Batangas > Arthur's Rock (13N120E0002)
CoRIS Place Thesaurus COUNTRY/TERRITORY > Philippines > Batangas > Mabini (13N120E0032)
CoRIS Place Thesaurus COUNTRY/TERRITORY > Philippines > Batangas > Tingloy (13N120E0009)
CoRIS Place Thesaurus COUNTRY/TERRITORY > Philippines > Batangas > Twin Rocks Sanctuary (13N120E0005)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > South China Sea > Balayan Bay > Arthur's Rock (13N120E0002)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > South China Sea > Balayan Bay > Mabini (13N120E0032)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > South China Sea > Balayan Bay > Twin Rocks Sanctuary (13N120E0005)
CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > South China Sea > Maricaban Island > Tingloy (13N120E0009)
NODC Sea Area Names Thesaurus NW Pacific (limit-180)
None Arthur's Reef
None Batalang Bato
None Batong Buhay
None Koala Reserve Area
None Philippines
None Twin Rocks
None Verde Island Passage

Physical Location

Organization: Pacific Islands Fisheries Science Center
City: Honolulu
State/Province: HI
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: CSV Files
Maintenance Frequency: None Planned
Data Presentation Form: Table (digital)
Entity Attribute Overview:

The archived data includes information about the survey as well as the observations, and each column of data provided is described in the entities and attributes.

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.

Data Set Credit: PIFSC Coral Reef Ecosystem Program and funded by the NOAA Coral Reef Conservation Program and the United States Agency for International Development
Instrument (Deprecated): CTD
Platform (Deprecated): Not applicable
Physical Collection / Fishing Gear (Deprecated): Niskin bottles

Support Roles

Data Steward

CC ID: 565393
Date Effective From: 2012
Date Effective To:
Contact (Person): Young, Charles W
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: charles.young@noaa.gov
Contact Instructions:

Email preferred

Distributor

CC ID: 565394
Date Effective From: 2017
Date Effective To:
Contact (Organization): National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD)
Address: NOAA/NESDIS E/OC SSMC3, 4th Floor, 1351 East-West Highway
Silver Spring, MD 20910-3282
Phone: (301) 713-3277
Contact Instructions:

Email preferred

Distributor

CC ID: 565392
Date Effective From: 2012
Date Effective To: 2017
Contact (Person): Trick, Kevin L
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: kevin.trick@noaa.gov
Phone: 808-725-5421
Contact Instructions:

Email preferred

Metadata Contact

CC ID: 565390
Date Effective From: 2012
Date Effective To:
Contact (Person): DesRochers, Annette M
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: annette.desrochers@noaa.gov
Phone: (808)725-5461
Business Hours: 8 am - 5 pm
Contact Instructions:

Email preferred

Originator

CC ID: 565395
Date Effective From: 2012
Date Effective To:
Contact (Organization): NOAA Coral Reef Conservation Program (CRCP) (CRCP)
Address: 1305 East West Highway 10th Floor
Silver Spring, MD 20910-3281
Phone: (301) 713-3155
URL: http://coralreef.noaa.gov

Originator

CC ID: 565389
Date Effective From: 2012
Date Effective To:
Contact (Organization): Pacific Islands Fisheries Science Center (PIFSC)
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Phone: 808-725-5300
URL: http://www.pifsc.noaa.gov
Business Hours: 8:00 a.m. - 4:30 p.m.

Point of Contact

CC ID: 565391
Date Effective From: 2015
Date Effective To:
Contact (Person): Oliver, Thomas
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: thomas.oliver@noaa.gov
Phone: (808)725-5444
Contact Instructions:

Email preferred

Point of Contact

CC ID: 566672
Date Effective From: 2012
Date Effective To: 2015
Contact (Person): Young, Charles W
Address: 1845 Wasp Blvd.
Honolulu, HI 96818
USA
Email Address: charles.young@noaa.gov
Contact Instructions:

Email preferred

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Description:

Mabini and Tingloy in Batangas, Philippines

Extent Group 1 / Geographic Area 1

CC ID: 566705
W° Bound: 120.87
E° Bound: 120.9
N° Bound: 13.728054
S° Bound: 13.658594
Description

Five survey locations in the municipalities of Mabini and Tingloy in Batangas, Philippines (near the Verde Island Passage), including Batong Buhay, Koala Reserve Area, Arthur's Reef, Twin Rocks, and Batalang Bato.

Extent Group 1 / Time Frame 1

CC ID: 566708
Time Frame Type: Range
Start: 2013-02-02
End: 2013-02-03
Alternate Start As Of Info: SBP1301
Description:

Interim mission to collect water samples for carbonate chemistry monitoring

Extent Group 1 / Time Frame 2

CC ID: 566706
Time Frame Type: Range
Start: 2015-05-23
End: 2015-06-03
Alternate Start As Of Info: MP1507
Description:

Final mission to recover instrumentation, and to collect benthic photographs and water samples, including CTDs.

Extent Group 1 / Time Frame 3

CC ID: 566707
Time Frame Type: Range
Start: 2012-03-12
End: 2012-03-15
Alternate Start As Of Info: SBP1201
Description:

Initial mission to deploy instrumentation, and to collect benthic photographs and water samples.

Access Information

Security Class: Unclassified
Security Classification System:

Not applicable

Security Handling Description:

Not applicable

Data Access Policy:

Coral Reef Ecosystem Program (CREP) Data Sharing Recommendations, version 9.0 updated August 12, 2015:

CREP welcomes the opportunity to collaborate on research issues contributing to the scientific basis for better management of marine ecosystems. CREP has a very diverse set of field activities that generates large volumes of data using an array of data collection protocols.

The following recommendations are for your consideration as you use this data:

1) Data analyses should take all field exigencies into account. The most effective way to do this would be active collaboration with CREP principal investigators.

2) In all presentations, product releases, or publications using data generated by CREP, proper acknowledgement of both CREP and the individuals responsible for data collection is expected. Citing the DOI (if available) is preferred, a non-DOI example is listed below.

3) If you collect or generate data for the same study areas, CREP requests that you share relevant information on complimentary data collections.

4) Those receiving data are strongly urged to inform the CREP Data Management Team of any errors and discrepancies that are discovered during the course of using these data. They are further urged to bring to the attention of the Team all problems and difficulties encountered in using these data. This information is necessary in order to improve the collections and to facilitate more efficient and economical data processing and retrieval. The users are asked to supply copies of any missing data that may be located, and to provide information as to significant subsets and special aggregations of data that are developed in using the material provided.

Example citation:

"This publication makes use of data products provided by the Coral Reef Ecosystem Program (CREP), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), with funding support from the NOAA Coral Reef Conservation Program (CRCP) and the United States Agency for International Development. The analysis and interpretations presented here are solely that of the current authors”

Data Access Procedure:

Data can be accessed online via the NOAA National Centers for Environmental Information (NCEI) Ocean Archive.

Data Access Constraints:

None

Data Use Constraints:

Please cite NOAA Coral Reef Ecosystem Program (CREP) when using the data.

Suggested Citation:

Coral Reef Ecosystem Program; Pacific Islands Fisheries Science Center (2017). Water chemistry and Conductivity-Temperature-Depth (CTD) profiles at coral reef sites in Batangas, Philippines from discrete surface and bottom water samples collected from 2012 to 2015. NOAA's National Center for Environmental Information, https://inport.nmfs.noaa.gov/inport/item/45817.

Metadata Access Constraints:

None

Metadata Use Constraints:

None

Distribution Information

Distribution 1

CC ID: 565398
Download URL: http://accession.nodc.noaa.gov/0157633
Distributor: National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD) (2017 - Present)
File Name: Dickson_2007_SOP_OceanCO2.pdf
Description:

Dickson et al. (2007) protocols, Guide to best practices for ocean CO2 measurements. PICES Special Publication 3, 191 pp. ("Guide" in one PDF file). Chapter 4, SOPs 1, 2 and 3b are relevant to this particular dataset.

File Date/Time: 2007-10-12 00:00:00
File Type: PDF

Distribution 2

CC ID: 565397
Download URL: http://accession.nodc.noaa.gov/0157633
Distributor: National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD) (2017 - Present)
File Name: PMEL_2010_SOP_DICandTA.pdf
Description:

Discrete water sample collection protocol, established by the NOAA Pacific Marine Environmental Laboratory (PMEL).

File Date/Time: 2010-05-14 00:00:00
File Type: PDF

Distribution 3

CC ID: 567056
Start Date: 2015-05-23
End Date: 2015-06-03
Download URL: http://accession.nodc.noaa.gov/0162832
Distributor: National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD) (2017 - Present)
File Name: CTD_Data_Philippines_2015.csv
Description:

CTD profiles from climate survey sites in the Philippines in 2015

File Date/Time: 2016-10-24 00:00:00
File Type: .csv

Distribution 4

CC ID: 565399
Start Date: 2012-03
End Date: 2015-06
Download URL: http://accession.nodc.noaa.gov/0162832
Distributor: National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD) (2017 - Present)
File Name: WaterSample_Data_Philippines_2012to2015.csv
Description:

Water quality data from water samples collected by the NOAA Coral Reef Ecosystem Program at sites in the Philippines from 2012 to 2015.

File Type: csv (comma-separated values)

URLs

URL 1

CC ID: 565400
URL: https://pifscblog.wordpress.com/2013/03/06/verde-island-passage/
URL Type:
Online Resource
File Resource Format: HTML
Description:

NOAA PIFSC Coral Reef Ecosystem Program blog post from the 2013 mission to the Philippines.

URL 2

CC ID: 565401
URL: https://www.pifsc.noaa.gov/cred/coral_triangle_initiative.php
URL Type:
Online Resource
File Resource Format: PHP
Description:

Information about the NOAA Coral Reef Ecosystem Program's activities in the Coral Triangle.

URL 3

CC ID: 565402
URL: http://cdiac.ornl.gov/oceans/Handbook_2007.html
URL Type:
Online Resource
File Resource Format: HTML
Description:

Guide to Best Practices for Ocean CO2 Measurements (Dickson et al, 2007). The "Guide" all in one PDF is available on this website as well. Chapter 4 is relevant to the dataset, specifically standard operating procedures (SOPs) 1, 2, and 3b.

URL 4

CC ID: 565403
URL: http://www.pifsc.noaa.gov/cred/ocean_acidification.php
URL Type:
Online Resource
File Resource Format: PHP
Description:

Pacific Islands Fisheries Science Center, Coral Reef Ecosystem Program official website, Ocean Acidification page.

URL 5

CC ID: 565404
URL: https://galapagosscience.files.wordpress.com/2014/12/chuki_niskin.jpg
URL Type:
Browse Graphic
File Resource Format: JPG
Description:

Example of a SCUBA diver collecting a water sample underwater using a Niskin Bottle. Source: Galapagos Science Center, El-Nino Research Cruise News Blog, https://galapagosscience.wordpress.com/.

URL 6

CC ID: 567058
URL: https://www.pifsc.noaa.gov/cred/ocean_and_climate_change.php
URL Type:
Online Resource
File Resource Format: PHP
Description:

Official NOAA Coral Reef Ecosystem Program website, Ocean and Climate Change

Technical Environment

Description:

Water Sample and CTD Data: Microsoft Access 2010

See the data file for instruments used during each CTD cast.

Data processing was performed using Seabird Instrument's SeaSoft SBE Data Processing Software: http://www.seabird.com/software/SBEDataProcforWindows.htm

Data format is discreet, tabular (formatted, space delimited ASCII) files for each profile, with a full header as provided by SeaSoft. Raw file extension is HEX, processed file extension is CNV. The header contains latitude, longitude and other location information, as well as all data processing steps and settings. All dates and times are UTC. All positions are WGS84 decimal degrees.

Data Quality

Accuracy:

Water samples: Accuracy of laboratory analysis is explained in detail in Dickson et al (2007).

Comparability:

Since the carbonate system can vary on a diurnal scale and not all samples are taken at the exact same time of day, considering the time a sample was taken may be important for some analyses. However, because all samples are taken between 8:00 AM and 4:00 PM, variation due to diurnal change is expected to be small.

Completeness Report:

Water Samples: All analyzed samples are included. -9.99-E29 values in the data, where they exist, indicate that this observation/analysis was not conducted for the sample record where it appears.

CTD: The data are believed to be complete. -9.99-E29 values in the data, where they exist, indicate that this observation/analysis was not conducted for the sample record where it appears.

"Raw" data without calculations are provided, as many different parameters, in addition to aragonite saturation state, can be calculated from the data provided, and researchers may be interested in different parameters.

Conceptual Consistency:

The same methods of data collection are used at each surveyed site. The data are very consistent, sample collection and processing protocols are adhered to very rigorously, both in the field and in the lab.

Quality Control Procedures Employed:

CTD: The data is quality controlled by CREP personnel after the data is downloaded from the instrument.

Water Samples: PMEL conducts quality assurance and quality control on their analyses; the precision and accuracy of DIC analyses are on the order of ± 0.05% and TA analyses are on the order of ± 0.1% in a laboratory setting.

Data quality flags are provided by NOAA Pacific Marine Environmental Laboratory (PMEL) and included in the dataset. These flags indicate if something went wrong with the analytical equipment or with the processing of the samples. PMEL uses the World Ocean Circulation Experiment (WOCE) data quality flag system, where '2's correspond to good values, '3's to questionable data, and '4's to bad data. Most water samples collected by the NOAA Coral Reef Ecosystem Program (CREP) and analyzed by PMEL in this dataset received a '2' data quality flag and the remainder were flagged as questionable ('3').

Data Management

Have Resources for Management of these Data Been Identified?: Yes
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: Yes
Is Access to the Data Limited Based on an Approved Waiver?: No
Approximate Delay Between Data Collection and Dissemination: Unknown
Actual or Planned Long-Term Data Archive Location: NCEI-MD
Approximate Delay Between Data Collection and Archiving: Unknown
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

The data resides in an MS Access database, which is maintained and regularly backed up by PIFSC ITS.

Lineage

Lineage Statement:

NOAA Coral Reef Ecosystem Program (CREP) assembles carbonate chemistry information from discrete seawater samples analyzed for two parameters: 1) Dissolved Inorganic Carbon (DIC), which in some literature is defined as Total Carbon (CT), and 2) Total Alkalinity (TA or AT). The carbonate system is influenced by seawater salinity, temperature, pressure, and the dissolved nutrients silicate (SiO44-) and phosphate (PO43-).

All carbonate system collection and measurement methodologies follow the protocols accepted by the greater scientific community and outlined in Dickson et al. (2007)

Sources

Coral reef ecosystem integrated observing system: In-situ oceanographic observations at the US Pacific islands and atolls

CC ID: 567061
Citation URL: http://www.pifsc.noaa.gov/library/pubs/Hoeke_etal_JOO_2009.pdf

Dickson et al (2007), SOP 1: Water Sampling for the parameters of the oceanic carbon dioxide system

CC ID: 565409
Citation URL: http://cdiac.ornl.gov/ftp/oceans/Handbook_2007/sop01.pdf

Dickson et al (2007), SOP 2: Determination of total dissolved inorganic carbon in sea water

CC ID: 565410
Citation URL: http://cdiac.ornl.gov/ftp/oceans/Handbook_2007/sop02.pdf

Dickson et al (2007), SOP 3b: Determination of total alkalinity in sea water using an open-cell titration

CC ID: 565411
Citation URL: http://cdiac.ornl.gov/ftp/oceans/Handbook_2007/sop03b.pdf

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.

CC ID: 565412
Citation URL: http://cdiac.ornl.gov/ftp/oceans/Handbook_2007/Guide_all_in_one.pdf

Inorganic Carbon Sampling: Planning and Sample Collection

CC ID: 565408
Contact Name: NOAA Pacific Marine Environmental Laboratory (PMEL)
Publish Date: 2010-05-14
Citation URL: http://www.pmel.noaa.gov/co2/files/dic_sample_technique_revised_5-17-10.pdf

Program developed for CO2 System Calculations (CO2Sys)

CC ID: 577397
Publish Date: 1998-02-01
Citation URL: http://cdiac.ornl.gov/ftp/co2sys/CO2SYS_calc_DOS_v1.05/cdiac105.pdf

Process Steps

Process Step 1

CC ID: 565413
Description:

Discrete water samples are collected according to the protocol established by the NOAA Pacific Marine Environmental Laboratory (PMEL).

Process Contact: Young, Charles W
Email Address: charles.young@noaa.gov
Source: Inorganic Carbon Sampling: Planning and Sample Collection

Process Step 2

CC ID: 565414
Description:

NOAA Coral Reef Ecosystem Program (CREP) collects supplementary salinity, temperature, and pressure values by deploying a Seabird Electronics SBE-19plus CTD in concert with every discrete seawater sample collection.

Process Contact: Young, Charles W
Email Address: charles.young@noaa.gov

Process Step 3

CC ID: 565415
Description:

NOAA Pacific Marine Environmental Laboratory (PMEL) supports NOAA Coral Reef Ecosystem Program's (CREP’s) carbonate chemistry sampling through the laboratory analysis of dissolved inorganic carbon (DIC) and total alkalinity (TA), provision of the sample bottles and transport cases, and technical consultation. The source document contains the protocols that PMEL uses to analyze water samples for DIC and TA.

Non-InPort Process Contact (Deprecated): NOAA Pacific Marine Environmental Laboratory (PMEL)
Source: 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.

Process Step 4

CC ID: 565416
Description:

The Total Alkalinity (TA) analysis employs a two-stage, potentiometric, open-cell titration using coulometrically analyzed HCl.

Source: Dickson et al (2007), SOP 3b: Determination of total alkalinity in sea water using an open-cell titration

Process Step 5

CC ID: 567059
Description:

The CTD package is deployed off a small boat using a hand line. The CTD is held just under the surface for 1 minute to cycle water through the instrument and tubing. Afterwards the CTD is lowered at an even pace to near the bottom depth (max 18 m). A GPS waypoint is taken at the beginning of the cast to mark the position and time.

Process Contact: Young, Charles W
Email Address: charles.young@noaa.gov
Source: Coral reef ecosystem integrated observing system: In-situ oceanographic observations at the US Pacific islands and atolls

Process Step 6

CC ID: 567060
Description:

The raw data are processed by the SeaBird data processing software (http://www.seabird.com/software/sbe-data-processing) using the following steps:

1) Data conversion, 2) Filter, 3) AlignCTD, 4) Loop Edit, 5) Derive, 6) Bin Average.

Each header in the raw and processed files is manipulated to include the latitude, longitude, and date/time (in UTC) of the cast. The result is a standard ascii .cnv file, in addition to the raw .hex file. THe data are then ingested into an Access database.

Process Contact: Young, Charles W
Email Address: charles.young@noaa.gov
Source: Coral reef ecosystem integrated observing system: In-situ oceanographic observations at the US Pacific islands and atolls

Process Step 7

CC ID: 577398
Description:

Aragonite calculations (not provided in dataset) that are of interest to CREP researchers as part of the National Coral Reef Monitoring Program are described here.

CO2Sys is a carbonate system calculator used to calculate aragonite parameters. It can be used in programs written for Excel, Matlab, R, and many more. The source document is the CO2Sys User's Manual. The CO2Sys Excel and Matlab versions most commonly used by oceanographers can be found online at http://cdiac.ornl.gov/ftp/oceans/co2sys/.

In section 6.3 the output variable for aragonite saturation state is "Omegas for calcite and aragonite at the output conditions"

Section 12 contains the "Omega" calculation of interest.

With all the input conditions, including temp, salinity, pressure (depth), dissolved nutrients, and 2 of the required carbonate system parameters (CREP analyzes water samples for DIC and TA) collected in the field (and included in the dataset), the rest of the carbonate values can be calculated, one of which is the omega for aragonite (i.e., aragonite saturation state).

Process Contact: Oliver, Thomas
Phone (Voice): (808)725-5444
Email Address: thomas.oliver@noaa.gov
Source: Program developed for CO2 System Calculations (CO2Sys)

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Type Title
Entity (ENT) Conductivity-Temperature-Depth Entity
Entity (ENT) Water Chemistry Entity

Catalog Details

Catalog Item ID: 45817
Metadata Record Created By: Annette M DesRochers
Metadata Record Created: 2017-04-21 23:37+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2019-06-04 13:14+0000
Metadata Record Published: 2017-06-09
Owner Org: PIFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2018-06-10