Note: sections marked with * can be repeated as necessary. For physiological response studies, the bounding box info is for the location of the organism collection. For comments please contact Liqing.Jiang@noaa.gov

Click here to access the Excel version.

1. Data submitter

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   Attribute	Additional	Ref No.	Brief Descriptions
   Name		1.01	Full name of the principal investigator (Firstname Middlename Lastname).
   Institution		1.02	Affiliated institution of the principal investigator (e.g., Woods Hole Oceanographic Institution).
   Road address		1.03	Address of the affiliated institution of the principal investigator.
   City		1.04	Name of the City, e.g., Seattle
   State or province		1.05	State or Province, e.g., Washington
   Zip code		1.06	Zip code, e.g., 98115
   Country		1.07	Name of the country, e.g., U.S.A.
   Phone		1.08	Phone number of the principal investigator (xxx xxx xxx).
   Email		1.09	Email address of the principal investigator.
   Researcher ID		1.10	Identification number of the researcher
   ID type (ORCID, Researcher ID, etc.)		1.11	Type of the researcher identification

2. Investigators*

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   Attribute	Additional	Ref No.	Brief Descriptions
   Name		2.01	Full name of the principal investigator (Firstname Middlename Lastname).
   Institution		2.02	Affiliated institution of the principal investigator (e.g., Woods Hole Oceanographic Institution).
   Road address		2.03	Address of the affiliated institution of the principal investigator.
   City		2.04	Name of the City, e.g., Seattle
   State or province		2.05	State or Province, e.g., Washington
   Zip code		2.06	Zip code, e.g., 98115
   Country		2.07	Name of the country, e.g., U.S.A.
   Phone		2.08	Phone number of the principal investigator (xxx xxx xxx).
   Email		2.09	Email address of the principal investigator.
   Researcher ID		2.10	Identification number of the researcher
   ID type (ORCID, Researcher ID, etc.)		2.11	Type of the researcher identification
   Role		2.12	The role of the investigator

3. Author list for citation purposes

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   Ref No.	Brief Descriptions
   3	Author list in the format of Lastname1, Firstname1 Middlename1; Lastname2, Firstname2 Middlename2; ...

4. Dataset identifiers

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   Attribute	Additional	Ref No.	Brief Descriptions
   EXPOCODE*		4.01	Expedition code consists of the four digit ICES Platform code, and the date of the first day of the cruise in the format of YYYYMMDD.
   Cruise ID*		4.02	Cruise identification
   Digital object identifier (if available)*		4.03	It is recommended to get a DOI only after the data is published in a long-term archive. However, if your dataset has a DOI already that you want to honor, please list them here.

5. Dataset title

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   Ref No.

   Brief Descriptions

   5

   A brief descriptive sentence that summarizes the content of a data set. Here is one example: "Dissolved inorganic carbon, total alkalinity, pH, temperature, salinity and other variables collected from profile and discrete sample observations using CTD, Niskin bottle, and other instruments from R/V Wecoma in the U.S. West Coast California Current System during the 2011 West Coast Ocean Acidification Cruise (WCOA2011) from 2011-08-12 to 2011-08-30"

6. Dataset description

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   Ref No.

   Brief Descriptions

   6

   The abstract of a dataset is a brief summary that provides an overview of the dataset's content, purpose, and scope. It is used to provide context and background information to users who are interested in using the dataset. An abstract may include information such as the dataset's source, how the data was collected or generated, the variables or attributes included in the dataset, and any limitations or restrictions on the use of the data. It may also include information on how the data can be accessed or used.

7. Types of study*

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   Ref No.	Brief Descriptions
   7	There are several types of study designs that can be used to collect and measure oceanographic variables, or investigate the physiological responses of marine organisms to ocean acidification. Examples: surface underway, CTD profile, timeseries, laboratory experiment, mesocosm, field experiment, natural analogues, etc.

8. Treatment type (special use only)

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   Ref No.	Brief Descriptions
   8	This element is only applicable if the above element is one of the physiological response studies. This element is designed to indicate whether a physiological response dataset is out of an ocean acidification (OA) or ocean alkalinity enhancement (OAE) study.

9. Model name (special use only)*

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   Ref No.	Brief Descriptions
   9	[For model output dataset only] Name of the regional or global model, e.g., GFDL-ESM4.1.

10. Temporal coverage

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    Attribute	Additional	Ref No.	Brief Descriptions
    Start date (YYYY-MM-DD)		10.01	Start date of the first measurement in the format of YYYY-MM-DD (e.g., 2001-02-25).
    End date (YYYY-MM-DD)		10.02	End date of the last measurement in the format of YYYY-MM-DD (e.g., 2002-05-16).

11. Bounding box information

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    Attribute	Additional	Ref No.	Brief Descriptions
    Westernmost longitude		11.01	Westernmost longitude of the sampling (decimal degrees, negative for Western Hemisphere longitude).
    Easternmost longitude		11.02	Easternmost longitude of the sampling (decimal degrees, negative for Western Hemisphere longitude)
    Northernmost latitude		11.03	Northernmost latitude of the sampling (decimal degrees, negative for Southern Hemisphere latitude)
    Southernmost latitude		11.04	Southernmost latitude of the sampling (decimal degrees, negative for Southern Hemisphere latitude)

12. Sea names*

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    Ref No.	Brief Descriptions
    12	Names of the seas where the data collection takes place, e.g., Gulf of Mexico, Baltic Sea, etc.

13. Location where biological subject was collected (special use only)*

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    Ref No.	Brief Descriptions
    13	Location where the organisms were collected, e.g., Puget Sound.

14. Location where the experiment was carried out (special use only)*

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    Ref No.	Brief Descriptions
    14	Descriptive words about where the experiment was carried out, e.g., Puget Sound.

15. Platform info*

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    Attribute	Additional	Ref No.	Brief Descriptions
    Platform type		15.01	Controlled vocabularies for the types of the platform (e.g., research vessel, Saildrone, glider, argo, research vessel, fish vessel, oil tanker, mooring, etc)
    Platform name		15.02	Name of the observing platform, e.g., RV Ronald Brown, Saildrone#0132, Mooring_First_Landing, etc.
    Platform ID		15.03	ICES platform code (e.g., 33RO, optional).
    Platform owner		15.04	Institution that owns the platform.
    Platform country		15.05	Country to which the platform belongs.

16. Research project*

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    Ref No.	Brief Descriptions
    16	Project, which the data collection is part of. For example, West Coast Ocean Acidification (WCOA) Project.

17. Funding info*

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    Attribute	Additional	Ref No.	Brief Descriptions
    Name of the funder		17.01	Funding agency name that supported the data collection, e.g., NOAA Ocean Acidification Program. Use controlled vocabulary
    Funder country
    Project title		17.02	Title of the grant or project
    Project identification		17.03	Identification of the grant or project
    Project start date		17.04	Start date of the research project
    Project end date		17.05	End date of the research project

18. Supplemental information

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    Ref No.	Brief Descriptions
    18	Additional information that cannot be accommodated in other metadata fields pertaining to this dataset.

19. Publications describing this dataset*

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    Ref No.	Brief Descriptions
    19	References of peer-reviewed publications that describe this dataset. It is recommended to use https://www.citationmachine.net/ to generate such references.

20. Other datasets collected from this expedition*

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    Ref No.	Brief Descriptions
    20	Other datasets that are collected from the same expedition, including all biological, chemical, and physical measurements.

21. Observed properties*

    Note:

    1. This section is for observed properties, e.g., temperature, dissolved oxygen, nitrate, etc. only.
       Information such as longitude, latitude, depth, QC flags, etc., are important information for the data files,
       but should not be listed in this section.
    2. Carbon system parameters, e.g., DIC, TA, pH, fCO2, have their own dedicated sections.
    3. There are two sections for fCO2, one for autonomous fCO2 measurements and the other for discrete bottle based fCO2 measurements
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    Attribute	Additional	Ref No.	Brief Descriptions
    Variable abbreviation in data files		21.01	Column header name of the variable in the data files, e.g., T, DO, etc.
    Full variable name		21.02	Long name of the measured variable, e.g., Temperature, Dissolved Oxygen, etc
    Variable unit		21.03	Units of the variable, e.g., oC, μmol/kg.
    Observation type		21.04	How the variable was observed, e.g., surface underway, profile, time series, model output, etc. For experimental data, this could be: laboratory experiment, pelagic mesocosm, benthic mesocosm, natural perturbation site studies, natural analogues, etc.
    Discrete or continuous		21.05	Whether the reported results are based on discrete-bottled measurements or continuous sensor measurements
    In-situ or manipulated		21.06	Whether the variable reported is from an in-situ observation, or from a manipulated experiment.
    Manipulation method (special use only)		21.07	How the seawater chemsitry is manipulated (e.g., bubbling CO2, solid alkalinization, etc.)
    Measured or calculated		21.08	Whether the variable is measured in-situ, or calculated from other variables.
    Calculation method and parameters (special use only)		21.09	Information about how the variable was calculated, e.g., using a Matlab version of the CO2SYS with the dissociation constants of Lueker et al., 2000 for carbonic acid, etc.
    Sampling instrument		21.10	Instrument that is used to collect water samples, or deploy sensors, etc. For example, a Niskin bottle, pump, CTD, etc is a sampling instrument.
    Sampling method		21.11	Additional information describing how the sample was collected.
    Analyzing instrument		21.12	Instrument that is used to analyze the water samples collected with the 'sampling instrument', or the sensors that are mounted on the 'sampling instrument' to measure the water body continuously. For example, a coulometer, winkler titrator, spectrophotometer, pH meter, thermosalinograph, oxygen sensor, YSI Multiparameter Meter, etc is an analyzing instrument. We encourage you to document as much details (such as the make, model, resolution, precisions, etc) of the instrument as you can here.
    Analyzing method		21.13	Additional information describing how the sample was analyzed.
    Calibration info		21.14	Information about how the sensor was calibrated.
    Field replicate information		21.15	Repetition of sample collection and measurement, e.g., triplicate samples.
    QC steps taken		21.16	Describe what QC steps have been taken to improve the quality of the data
    Uncertainty		21.17	Uncertainty of the results (e.g., 1%, 2 μmol/kg), or a description of the uncertainties involved in this method.
    Weather or climate quality		21.18
    QC flag scheme		21.19	Describe what the quality control flags stand for, e.g., 2 = good value, 3 = questionable value, 4 = bad value.
    Biological subject		21.20	For biological variables, please state the taxonomy (a specific species genus or a community), upon which the variable is studied. For example, if you study the growth rate of a certain type of Salmon. The "variable/parameter" is growth rate, and "Biological subject" is that specific type of salmon. You could group/capture organismal data in three forms: taxonomic, functional, and phylogenetic.
    Species Identification code (if available)		21.21	It is recommended to use the species reference databases from the Integrated Taxonomic Information System (ITIS, http://www.itis.gov/), World Register of Marine Species (WoRMS, http://marinespecies.org/), Catalogue of Life (COL, https://www.catalogueoflife.org/), or Paleobiology Database (PBDB, https://paleobiodb.org/classic/classificationForm).
    Taxonomic code system used		21.22	The type of the taxonomic system used, e.g., IT IS, WoRMS, COL, PBDB, etc.
    Life stage		21.23	Organisms often go through several distinct stages during their development. This can be any stages like egg, embryo, larva, juvenile, and adult.
    Other detailed information		21.24	Other details about the sampling and analyzing procedures.
    Method reference (citation)		21.25	Citation for the method.
    Researcher who measured this variable		21.26	The name of the PI, whose research team measured or derived this parameter.
    		21.27	The institution of the PI, whose research team measured or derived this parameter.

22. Dissolved Inorganic Carbon (DIC)

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    Attribute	Additional	Ref No.	Brief Descriptions
    Variable abbreviation in data files		22.01	Column header name of the variable in the data files, e.g., DIC, TCO2, etc.
    Variable unit		22.02	Units of the variable, e.g., oC, μmol/kg.
    Observation type		22.03	How the variable is observed, e.g., surface underway, profile, time series, model output, etc. For experimental data, this could be: laboratory experiment, pelagic mesocosm, benthic mesocosm, benthic FOCE type studies, natural perturbation site studies, natural gradient studies, etc
    Discrete or continuous		22.04	Whether the reported results are based on discrete-bottled measurements or continuous sensor measurements
    In-situ or manipulated		22.05	Whether the variable reported is from an in-situ observation, or from a manipulated experiment.
    Manipulation method (special use only)		22.06	How the seawater chemsitry is manipulated (e.g., bubbling CO2, solid alkalinization, etc.)
    Measured or calculated		22.07	Whether the variable is measured directly, or calculated from other variables. For example, pH can be calculated from DIC and TA.
    Calculation method and parameters (special use only)		22.08	Information about how the variable was calculated, e.g., using a Matlab version of the CO2SYS with the dissociation constants of Lueker et al., 2000 for carbonic acid, etc.
    Sampling instrument		22.09	Instrument that is used to collect water samples, or deploy sensors, etc. For example, a Niskin bottle, pump, CTD, etc is a sampling instrument.
    Sampling method		22.10	Additional information describing how the sample was collected.
    Analyzing instrument		22.11	Instrument that is used to analyze the water samples collected with the 'sampling instrument', or the sensors that are mounted on the 'sampling instrument' to measure the water body continuously. For example, a coulometer, winkler titrator, spectrophotometer, pH meter, thermosalinograph, oxygen sensor, YSI Multiparameter Meter, etc is an analyzing instrument. We encourage you to document as much details (such as the make, model, resolution, precisions, etc) of the instrument as you can here.
    Analyzing method		22.12	Additional information describing how the sample was analyzed.
    Calibration info	Calibration technique description	22.13	Description of the procedure.
    	Frequency of Calibration	22.14	How frequent was the calibration carried out, e.g., every 6 hours, etc.
    	CRM manufacturer	22.15	Manufacture of the Certified Reference Material, e.g., Andrew Dickson's lab at Scripps Institute of Oceanography.
    	CRM Batch number	22.16	Batch number of the CRMs that are used to calibrate the instrument.
    How were the samples preserved	Preservative used to kill the sample	22.17	As described, e.g., Mercury Chloride.
    	Preservative volume	22.18	How much is added to each sample to kill the microbes. For example, 20 μL Mercury Chloride is added to 500 mL samples.
    	Preservative volume	22.19	Please specify whether the reported variables were corrected for usage, and if so, how they were corrected.
    Field replicate information		22.20	Repetition of sample collection and measurement, e.g., triplicate samples.
    QC steps taken		22.21	Describe what QC steps have been taken to improve the quality of the data
    Uncertainty		22.22	Uncertainty of the results (e.g., 1%, 2 μmol/kg), or a description of the uncertainties involved in this method.
    Weather or climate quality		22.23	Whether the measurement accuracy is of weather or climate quality.
    QC flag scheme		22.24	Describe what the quality control flags stand for, e.g., 2 = good value, 3 = questionable value, 4 = bad value.
    Other detailed information		22.25	Detailed description of the sampling and analyzing procedures.
    Method reference (citation)		22.26	Citation for the dissolved inorganic carbon method
    Researcher who measured this variable	Researcher Name	22.27	The name of the PI, whose research team measured or derived this parameter.
    	Researcher Institution	22.28	The institution of the PI, whose research team measured or derived this parameter.

23. Total Alkalinity (TA)

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    Attribute	Additional	Ref No.	Brief Descriptions
    Variable abbreviation in data files		23.01	Column header name of the variable in the data files, e.g., TA, Alk, etc.
    Variable unit		23.02	Units of the variable, e.g., oC, μmol/kg.
    Observation type		23.03	How the variable is observed, e.g., surface underway, profile, time series, model output, etc. For experimental data, this could be: laboratory experiment, pelagic mesocosm, benthic mesocosm, benthic FOCE type studies, natural perturbation site studies, natural gradient studies, etc
    Discrete or continuous		23.04	Whether the reported results are based on discrete-bottled measurements or continuous sensor measurements
    In-situ or manipulated		23.05	Whether the variable reported is from an in-situ observation, or from a manipulated experiment.
    Manipulation method (special use only)		23.06	How the seawater chemsitry is manipulated (e.g., bubbling CO2, solid alkalinization, etc.)
    Measured or calculated		23.07	Whether the variable is measured in-situ, or calculated from other variables.
    Calculation method and parameters (special use only)		23.08	Information about how the variable was calculated, e.g., using a Matlab version of the CO2SYS with the dissociation constants of Lueker et al., 2000 for carbonic acid, etc.
    Sampling instrument		23.09	Instrument that is used to collect water samples, or deploy sensors, etc. For example, a Niskin bottle, pump, CTD, etc is a sampling instrument.
    Sampling method		23.10	Additional information describing how the sample was collected.
    Analyzing instrument		23.11	Instrument that is used to analyze the water samples collected with the 'sampling instrument', or the sensors that are mounted on the 'sampling instrument' to measure the water body continuously. For example, a coulometer, winkler titrator, spectrophotometer, pH meter, thermosalinograph, oxygen sensor, YSI Multiparameter Meter, etc is an analyzing instrument. We encourage you to document as much details (such as the make, model, resolution, precisions, etc) of the instrument as you can here.
    Analyzing method		23.12	Additional information describing how the sample was analyzed.
    Calibration info	Calibration technique description	23.13	Description of the procedure.
    	Frequency of Calibration	23.14	How frequent was the calibration carried out, e.g., every 6 hours, etc.
    	CRM manufacturer	23.15	Manufacture of the Certified Reference Material, e.g., Andrew Dickson's lab at Scripps Institute of Oceanography.
    	CRM Batch number	23.16	Batch number of the CRMs that are used to calibrate the instrument.
    How were the samples preserved	Preservative used to kill the sample	23.17	As described, e.g., Mercury Chloride.
    	Preservative volume	23.18	How much is added to each sample to kill the microbes. For example, 20 μL Mercury Chloride is added to 500 mL samples.
    	Preservative correction description	23.19	Please specify whether the reported variables were corrected for usage, and if so, how they were corrected.
    Type of titration		23.20	Type of the titration used to determine alkalinity.
    Cell type (open or closed)		23.21	Whether the titration cell is open or closed.
    Curve fitting method		23.22	Curve fitting method used to determine the alkalinity.
    Magnitude of blank correction		23.23	Please specify whether the reported variables were corrected for blank, and if so, how they were corrected.
    Field replicate information		23.24	Repetition of sample collection and measurement, e.g., triplicate samples.
    QC steps taken		23.25	Describe what QC steps have been taken to improve the quality of the data
    Uncertainty		23.26	Uncertainty of the results (e.g., 1%, 2 μmol/kg), or a description of the uncertainties involved in this method.
    Weather or climate quality		23.27
    QC flag scheme		23.28	Describe what the quality control flags stand for, e.g., 2 = good value, 3 = questionable value, 4 = bad value.
    Other detailed information		23.29	Detailed description of the sampling and analyzing procedures.
    Method reference (citation)		23.30	Citation for the dissolved inorganic carbon method
    Researcher who measured this variable	Researcher Name	23.31	The name of the PI, whose research team measured or derived this parameter.
    	Researcher Institution	23.32	The institution of the PI, whose research team measured or derived this parameter.

24. pH

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    Attribute	Additional	Ref No.	Brief Descriptions
    Variable abbreviation in data files		24.01	Column header name of the variable in the data files, e.g., pH
    pH		24.02	The pH scale for the reported pH results, e.g., total scale, seawater scale, NBS scale, etc.
    Observation type		24.03	How the variable is observed, e.g., surface underway, profile, time series, model output, etc. For experimental data, this could be: laboratory experiment, pelagic mesocosm, benthic mesocosm, benthic FOCE type studies, natural perturbation site studies, natural gradient studies, etc
    Discrete or continuous		24.04	Whether the reported results are based on discrete-bottled measurements or continuous sensor measurements
    In-situ or manipulated		24.05	Whether the variable reported is from an in-situ observation, or from a manipulated experiment.
    Manipulation method (special use only)		24.06	How the seawater chemsitry is manipulated (e.g., bubbling CO2, solid alkalinization, etc.)
    Measured or calculated		24.07	Whether the variable is measured in-situ, or calculated from other variables.
    Calculation method and parameters (special use only)		24.08	Information about how the variable was calculated, e.g., using a Matlab version of the CO2SYS with the dissociation constants of Lueker et al., 2000 for carbonic acid, etc.
    Sampling instrument		24.09	Instrument that is used to collect water samples, or deploy sensors, etc. For example, a Niskin bottle, pump, CTD, etc is a sampling instrument.
    Sampling method		24.10	Additional information describing how the sample was collected.
    Analyzing instrument		24.11	Instrument that is used to analyze the water samples collected with the 'sampling instrument', or the sensors that are mounted on the 'sampling instrument' to measure the water body continuously. For example, a coulometer, winkler titrator, spectrophotometer, pH meter, thermosalinograph, oxygen sensor, YSI Multiparameter Meter, etc is an analyzing instrument. We encourage you to document as much details (such as the make, model, resolution, precisions, etc) of the instrument as you can here.
    Analyzing method		24.12	Additional information describing how the sample was analyzed.
    Calibration info	Calibration technique description	24.13	Description of the pH calibration procedures
    	Frequency of Calibration	24.14	How frequent was the calibration carried out, e.g., every 6 hours, etc.
    	Type of dye and manufacturer information	24.15	N/A
    	pH values of the standards	24.16	pH values of the standards, e.g., 4.0, 7.0, 10.0.
    	Temperature of calibration	24.17	Temperature at which the calibration was done.
    Temperature of pH measurement		24.18	Temperature at which the samples were measured.
    At what temperature was pH reported		24.19	The input could be a constant temperature value, or something like, in-situ temperature, temperature of analysis, etc.
    Temperature correction method (delete)		24.20	How the temperature effect was corrected.
    Field replicate information		24.21	Repetition of sample collection and measurement, e.g., triplicate samples.
    QC steps taken		24.22	Describe what QC steps have been taken to improve the quality of the data
    Uncertainty		24.23	Uncertainty of the results (e.g., 1%, 0.02 pH, etc), or a description of the uncertainties involved in this method.
    Weather or climate quality		24.24
    QC flag scheme		24.25	Describe what the quality control flags stand for, e.g., 2 = good value, 3 = questionable value, 4 = bad value.
    Other detailed information		24.26	Detailed description of the sampling and analyzing procedures.
    Method reference (citation)		24.27	Citation for the dissolved inorganic carbon method
    Researcher who measured this variable	Researcher Name	24.28	The name of the PI, whose research team measured or derived this parameter.
    	Researcher Institution	24.29	The institution of the PI, whose research team measured or derived this parameter.

25. pCO2/fCO2 (autonomous)

    Note: For calculated pCO2/fCO2, please use this section, instead of the one below for discrete measurements

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    Attribute	Additional	Ref No.	Brief Descriptions
    Variable abbreviation in data files		25.01	Column header name of the variable in the data files, e.g., pCO2 etc.
    Variable unit		25.02	Units of the variable, e.g., μatm.
    Observation type		25.03	How the variable is observed, e.g., surface underway, profile, time series, model output, etc. For experimental data, this could be: laboratory experiment, pelagic mesocosm, benthic mesocosm, benthic FOCE type studies, natural perturbation site studies, natural gradient studies, etc
    In-situ or manipulated		25.04	Whether the variable reported is from an in-situ observation, or from a manipulated experiment.
    Manipulation method (special use only)		25.05	How the seawater chemsitry is manipulated (e.g., bubbling CO2, solid alkalinization, etc.)
    Measured or calculated		25.06	Whether the variable is measured directly, or calculated from other variables. For example, pH can be calculated from DIC and TA.
    Calculation method and parameters (special use only)		25.07	Information about how the variable was calculated, e.g., using a Matlab version of the CO2SYS with the dissociation constants of Lueker et al., 2000 for carbonic acid, etc.
    Sampling instrument		25.08	Instrument that is used to collect water samples, or deploy sensors, etc. For example, a Niskin bottle, pump, CTD, etc is a sampling instrument.
    Sampling method		25.09	Additional information describing how the sample was collected.
    Analyzing method		25.10	Additional information describing how the sample was analyzed.
    Equilibrator information	Equilibrator type	25.11	Type of the equilibrator for the CO2 measurement.
    	Equilibrator volume (L)	25.12	The total volume of the CO2 equilibrator.
    	Vented or not	25.13	Is the equilibrator vented or not?
    	Water flow rate (L/min)	25.14	Flow rate of the flow through seawater.
    	Headspace gas flow rate (L/min)	25.15	Flow rate of the gas from the equilibrator to the CO2 analyzer.
    	How was temperature inside the equilibrator measured.	25.16	Please specify whether temperatrure inside the equilibrator is measured or not. If so, please describe how the temperature was measured.
    	How was pressured inside the equilibrator measured.	25.17	Please specify whether pressure inside the equilibrator is measured or not. If so, please describe how the pressure was measured.
    Gas detector information	Manufacturer	25.18	Manufacturer of the CO2 sensor
    	Model	25.19	Model of the CO2 sensor
    	Resolution	25.20	Resolution of the CO2 sensor
    	Uncertainty	25.21	Uncertainty of the CO2 sensor
    Calibration info	Calibration technique description	25.22	Please describe the calibration procedure.
    	Frequency of Calibration	25.23	How frequent was the calibration carried out, e.g., every 6 hours, etc.
    	Manufacturer of standard gas	25.24	Manufacturer of the CO2 standard gas.
    	Concentrations of standard gas	25.25	Concentrations of the CO2 standard gases that are used to calibrate the CO2 sensor, e.g., 200, 350, 510ppm.
    	Uncertainties of standard gas	25.26	Uncertainties of the CO2 standard gas, e.g., 0.5%.
    Location of seawater intake		25.27	Whereabout of the seawater intake
    Depth of seawater intake		25.28	Water depth of the seawater intake
    Drying method for CO2 gas		25.29	The method used to dry the gas coming out of CO2 equilibrator, before it is pumped into the CO2 sensor.
    Water vapor correction method		25.30	How the water vapor pressure inside the equilibrator was determined
    Temperature correction method		25.31	How the temperature effect was corrected.
    at what temperature was pCO2 reported		25.32	The input could be a constant temperature value, or something like, in-situ temperature, temperature of analysis, etc.
    QC steps taken		25.33	Describe what QC steps have been taken to improve the quality of the data
    Uncertainty		25.34	Uncertainty of the results (e.g., 1%, 2 μmol/kg), or a description of the uncertainties involved in this method.
    Weather or climate quality		25.35
    QC flag scheme		25.36	Describe what the quality control flags stand for, e.g., 2 = good value, 3 = questionable value, 4 = bad value.
    Other detailed information		25.37	Detailed description of the sampling and analyzing procedures, including calibration procedures, model number of the instrument, etc.
    Method reference (citation)		25.38	Citation for the pCO2 method
    Researcher who measured this variable	Researcher Name	25.39	The name of the PI, whose research team measured or derived this parameter.
    	Researcher Institution	25.40	The institution of the PI, whose research team measured or derived this parameter.

26. pCO2/fCO2 (discrete)

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    Attribute	Additional	Ref No.	Brief Descriptions
    Variable abbreviation in data files		26.01	Column header name of the variable in the data files, e.g., pCO2, etc.
    Variable unit		26.02	Units of the variable, e.g., μatm.
    Observation type		26.03	How the variable is observed, e.g., surface underway, profile, time series, model output, etc. For experimental data, this could be: laboratory experiment, pelagic mesocosm, benthic mesocosm, benthic FOCE type studies, natural perturbation site studies, natural gradient studies, etc
    In-situ or manipulated		26.04	Whether the variable reported is from an in-situ observation, or from a manipulated experiment.
    Manipulation method (special use only)		26.05	How the seawater chemsitry is manipulated (e.g., bubbling CO2, solid alkalinization, etc.)
    Sampling instrument		26.06	Instrument that is used to collect water samples, or deploy sensors, etc. For example, a Niskin bottle, pump, CTD, etc is a sampling instrument.
    Sampling method		26.07	Additional information describing how the sample was collected.
    Analyzing method		26.08	Additional information describing how the sample was analyzed.
    Gas detector information	Manufacturer	26.09	Manufacturer of the CO2 sensor
    	Model	26.10	Model of the CO2 sensor
    	Resolution	26.11	Resolution of the CO2 sensor
    	Uncertainty	26.12	Uncertainty of the CO2 sensor
    Calibration info	Calibration technique description	26.13	Description of the calibration procedure.
    	Frequency of Calibration	26.14	How frequent was the calibration carried out, e.g., every 6 hours, etc.
    	Temperature of Calibration	26.15	Temperature at which normalization was done.
    	Manufacturer of standard gas	26.16	Manufacturer of the CO2 standard gas.
    	Concentrations of standard gas	26.17	Concentrations of the CO2 standard gases that are used to calibrate the CO2 sensor, e.g., 200, 350, 510ppm.
    	Uncertainties of standard gas	26.18	Uncertainties of the CO2 standard gas, e.g., 0.5%.
    Storage method		26.19	How the samples were stored before the measurement.
    Seawater volume (mL)		26.20	Volume of seawater in the flask.
    Headspace volume (mL)		26.21	Volume of headspace (water displaced in the flask plus volume of the tubing).
    Temperature of measurement		26.22	Temperature at which the samples were analyzed.
    Water vapor correction method		26.23	How the water vapor pressure inside the equilibrator was determined
    Temperature correction method		26.24	How the temperature effect was corrected.
    At what temperature was pCO2 reported		26.25	The input could be a constant temperature value, or something like, in-situ temperature, temperature of analysis, etc.
    Field replicate information		26.26	Repetition of sample collection and measurement, e.g., triplicate samples.
    QC steps taken		26.27	Describe what QC steps have been taken to improve the quality of the data
    Uncertainty		26.28	Uncertainty of the results (e.g., 1%, 2 μmol/kg), or a description of the uncertainties involved in this method.
    Weather or climate quality		26.29
    QC flag scheme		26.30	Describe what the quality control flags stand for, e.g., 2 = good value, 3 = questionable value, 4 = bad value.
    Other detailed information		26.31	Detailed description of the sampling and analyzing procedures, including calibration procedures, model number of the instrument, etc.
    Method reference (citation)		26.32	Citation for the pCO2 method
    Researcher who measured this variable	Researcher Name	26.33	The name of the PI, whose research team measured or derived this parameter.
    	Researcher Institution	26.34	The institution of the PI, whose research team measured or derived this parameter.

27. Non-measured variables

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    Attribute	Additional	Ref No.	Brief Descriptions
    Variable abbrevation in data files		27.01	For variables that are not measured variables, such as station number, cast number, date, longitude, latitude etc. The purpose of this section is to allow you to spell out all the abbreviations that appear in your data files.
    Full variable name		27.02