Parameters

About Parameters

The CCHDO works frequently with many parameters common in hydrography. Provided here is a description of many common parameters encountered in exchange files.

Warning

This list may not contain every parameter which may be encountered in an exchange file. CCHDO is working on providing a machine readable list of ALL parameters which may be encountered in all files. This list will include parameters which CCHDO lacks a description for (known unknown parameters).

Until that time, parameters may appear in exchange formats from the CCHDO which are not documented here. No undocumented parameter or field will cause data integrity or usefulness issues (i.e. all undocumented parameters may be safely ignored).

Definitions

Provided with each parameter is a set of information in a table, the information included in that table should be interpreted as follows:

Units

These are the common units encountered for this parameter as it will appear in the exchange document itself. The special units of “None” means the field will be either blank or contain only whitespace.

Data Type

Specifies the allowed type of data in the data records for this parameter. There are three types of data, string (str), integers (int), and decimal. String data types may be any printing character except a comma , which is the field seperator. Integer data types may only contain numbers without a decimal point, quality flags are usually integers. Decimal data types may be any real number (including an integer) and may include decimal point, the precision is not specified.

Quality Flags

Specifies which set of quality flag definitions should be used to interpret a quality flag column for this parameter (if present). Current quality flags are: bottle, water, ctd. See the Quality Codes section for more information

Alternate Units

Some parameters might have alternate units which might also be in data files.

Error Column Label

A parameter might contain an error or uncertanty value associated with it. The column which contains the error/uncertanty values for this parameter will have the name listed in this field.

Unlisted Parameters

Otherwise valid exchange files which contain parameters, units, or parameter/unit pairs that are not listed in the Common Parameters list SHALL NOT cause the file to be invalid so long as the rest of the specification is adhered to.

Pass Through

Authors of software which read and write exchange files SHOULD pass though unlisted parameters, units, parameter/unit pairs, and the associated data columns.

Note

This section is intended for software which is used in data management, it does not impose a requirement on authors only wishing to do analysis.

Parameters with Unknown Units

Sometimes data may have units which are not known. For this reason, any parameter, including ones not yet listed in the table bellow, MAY have the unit of ARBITRARY in the unit line.

Warning

Parameters with ARBITRARY units are NOT comparable with other ARBITRARY parameters, including those with the same parameter name.

Common Parameters

This section was generated automatically from a machine readable list of parameters, there is also a validation schema for the parameters json.

EXPOCODE

Units

None

Data Type

string

The expedition code, assigned by the CCHDO or generated by the user. Used as the unique identifier for the cruise. Usual generation formula is ICES 4 character platform code then the cruise departure date in YYYYMMDD format. The underscore _ character may also be present.

Warning

EXPOCODE does not have woce quality codes. EXPOCODE_FLAG_W should not appear in data file Parameter and Unit Lines.


SECT_ID

Units

None

Data Type

string

If a repeat of a WOCE section, this is the WHP section identifier. Examples include: A12, A13.5, P02.

Warning

SECT_ID does not have woce quality codes. SECT_ID_FLAG_W should not appear in data file Parameter and Unit Lines.

Note

There may be inconsistency in the how line numbers are represented. For example, P02 might be present as P2, these represent the same SECT_ID. Two digit zero padded line numbers are the canonical representation, please inform the CCHDO if non zero padded line numbers are encountered.


STNNBR

Units

None

Data Type

string

The originator’s station identifier. Allowed characters are U+0030 to U+0039, U+0041 to U+005A, U+0061 to U+007A, and U+005F (0-9, a-z, A-Z, and _)

Warning

STNNBR does not have woce quality codes. STNNBR_FLAG_W should not appear in data file Parameter and Unit Lines.

Note

Numeric-only station identifiers are preferred by many data users, but provision for non numeric station identifiers is retained to maintain compatibility with WOCE records.


CASTNO

Units

None

Data Type

integer

The originator’s cast number.

Warning

CASTNO does not have woce quality codes. CASTNO_FLAG_W should not appear in data file Parameter and Unit Lines.

Note

Where cast number is unknown a default value of 1 MAY be inserted by data processors.


BIOS_CASTID

Units

None

Data Type

integer

BIOS cast number. Used by the Bermuda Institute of Ocean Sciences in the BATS and Hydrostation S timeseries.

Warning

BIOS_CASTID does not have woce quality codes. BIOS_CASTID_FLAG_W should not appear in data file Parameter and Unit Lines.


SAMPNO

Units

None

Data Type

string

The sample number. Often it is the rosette position, however, groups may use their own sampling identification scheme. Allowed characters are U+0030 to U+0039, U+0041 to U+005A, U+0061 to U+007A, and U+005F (0-9, a-z, A-Z, and _)

Warning

SAMPNO does not have woce quality codes. SAMPNO_FLAG_W should not appear in data file Parameter and Unit Lines.

Warning

The value may not be numeric, ensure that any software reading the file can handle UTF-8 data of the specified allowed code points.


GEOTR_EVENT

Units

None

Data Type

integer

The GEOTRACES Event number. Along with the GEOTRACES sample number, it is used by the GEOTRACES community for sample identification.

Warning

GEOTR_EVENT does not have woce quality codes. GEOTR_EVENT_FLAG_W should not appear in data file Parameter and Unit Lines.


GEOTR_SAMPNO

Units

None

Data Type

integer

The GEOTRACES Sample number. Along with the GEOTRACES Event number, it is used by the GEOTRACES community for sample identification.

Warning

GEOTR_SAMPNO does not have woce quality codes. GEOTR_SAMPNO_FLAG_W should not appear in data file Parameter and Unit Lines.


BIONBR

Units

None

Data Type

string

Sample identification number used by the Bedford Institute of Oceanography (BIO)

Warning

BIONBR does not have woce quality codes. BIONBR_FLAG_W should not appear in data file Parameter and Unit Lines.


BTLNBR

Units

None

Data Type

string

BTLNBR_FLAG_W Definitions

WOCE Bottle Quality Codes

The bottle identification number. This is intended to be a permanent, unique serial number fixed to the sampling device. It may also be the an identifier fixed for the duration of a single expedition. Allowed characters are U+0030 to U+0039, U+0041 to U+005A, U+0061 to U+007A, and U+005F (0-9, a-z, A-Z, and _)

Note

The bottle number MAY have quality flags.

Warning

The value may not be numeric, ensure that any software reading the file can handle UTF-8 data of the specified allowed code points.


DATE

Units

None

Data Type

string

The UTC date in zero padded YYYYMMDD format. The date reported is usually cast bottom for Bottle files and cast start for CTD files. Valid range for YYYY: 0001-9999. Valid range for MM: 01-12. Valid range for DD: 01-31 (depends on month and year). The format of dates corresponds to the C-strftime format of %Y%m%d.

The date should be read as a string, but be able to be cast unambiguously to an integer. To convert from integer representation, left pad zeros to match the date format description. For example, the integer 8020202 is the date 08020202 or Feb 2nd, 802. This is a very unlikely situation.

Warning

DATE does not have woce quality codes. DATE_FLAG_W should not appear in data file Parameter and Unit Lines.


TIME

Units

None

Data Type

string

The UTC time in zero padded hhmm format. A single time should be reported for each cast, usually the time at cast bottom (deepest) is used. The order of preference for the reported time is: cast bottom, cast start, cast end (i.e if cast bottom is not available, the cast start time should be used).

Valid range for hh: 00-24 Valid range for mm: 00-59 The format of times corresponds to the C-strftime format of %H%M.

The time should be read as a string, but be able to be cast unambiguously into an integer. To convert from an integer, left pad zeros to match the time format description.

Warning

TIME does not have woce quality codes. TIME_FLAG_W should not appear in data file Parameter and Unit Lines.

Note

Times represented as integers will be present in whp COARDS netcdf files. Times in netcdf files will be anywhere from 1 to 4 digits. E.g. a time of 6 as in integer represents 6 minutes after midnight or 0006

Midnight is a special case in that it has two valid representations: 0000 and 2400. The date 20140202 at time 0000 is the same instant as the date 20140201 at time 2400. This corresponds to times allowed by ISO 8601.

Use BTL_TIME to report the time of individual bottle closures.

CF netCDF files will use the standard Time Coordinate as specified in the conventions

Warning

Time is not a required parameter! If time is not present, then the temporal resolution of the data is reduced to a 24 hour period. It is the responsibility of the user of the data to omit files/casts which do not meet their temporal resolution requirements.


LATITUDE

Units

None

Data Type

decimal

CF Standard Name

latitude

The latitude as a signed decimal number. By convention, is positive in the northern hemisphere and negative in the southern hemisphere. Positive values do not include a + character (U+002B), negative values are prefixed with a - character (U+002D).

Warning

LATITUDE does not have woce quality codes. LATITUDE_FLAG_W should not appear in data file Parameter and Unit Lines.

Note

Only one latitude SHOULD be reported for a cast, typically this is the ship position when the cast is at the bottom (deepest), but this is not guaranteed.

Use BTL_LAT to include positions of individual bottle closures.

Warning

Since this parameter has no units, the positive in the northern hemisphere and negative in the southern hemisphere MUST be strictly adhered to.

The geographic coordinate system is not currently reported.


LONGITUDE

Units

None

Data Type

decimal

CF Standard Name

longitude

The longitude as a signed decimal number. By convention, is positive in the eastern hemisphere and negative in the western hemisphere. Positive values do not include a + character (U+002B), negative values are prefixed with a - character (U+002D).

Warning

LONGITUDE does not have woce quality codes. LONGITUDE_FLAG_W should not appear in data file Parameter and Unit Lines.

Note

Only one longitude SHOULD be reported for a cast, typically this is the ship position when the cast is at the bottom (deepest), but this is not guaranteed.

Use BTL_LON to include positions of individual bottle closures.

The longitudes of -180 and 180 describe the same meridian.

Warning

Since this parameter has no units, the positive in the eastern hemisphere and negative in the western hemisphere convention MUST be strictly adhered to.

The geographic coordinate system is not currently reported.


DEPTH

Units

METERS

Data Type

decimal

CF Standard Name

sea_floor_depth_below_sea_surface

The reported depth to the bottom. Corrected depths are preferred to uncorrected depths.

Warning

DEPTH does not have woce quality codes. DEPTH_FLAG_W should not appear in data file Parameter and Unit Lines.

Note

Documentation should be provided describing how the depth was calculated/corrected, typically in the comment fields.

Warning

This is NOT the depth of bottle closures.


CTDPRS

Units

DBAR

Data Type

decimal

CTDPRS_FLAG_W Definitions

WOCE CTD Quality Codes

CF Standard Name

sea_water_pressure

The corrected pressure as measured by the CTD.

Note

Typically does not have quality flags.


CTDRAW

Units

DBAR

Data Type

decimal

CTDRAW_FLAG_W Definitions

WOCE CTD Quality Codes

CF Standard Name

sea_water_pressure

The uncorrected pressure as measured by the CTD. Uncorrected means that no processing has been done (e.g. deck pressure offsets) other than manufacturer calibrations applied.

Note

Typically does not have quality flags.


CTDTMP

Units

ITS-90

Data Type

decimal

CTDTMP_FLAG_W Definitions

WOCE CTD Quality Codes

Alternate Units

IPTS-68, DEG C

CF Standard Name

sea_water_temperature

CF Units

degC

The corrected temperature as measured by the CTD.

Note

Typically does not have quality flags.


CTDSAL

Units

PSS-78

Data Type

decimal

CTDSAL_FLAG_W Definitions

WOCE CTD Quality Codes

CF Standard Name

sea_water_practical_salinity

CF Units

1

The corrected salinity as measured (calculated) by the CTD.


SALNTY

Units

PSS-78

Data Type

decimal

SALNTY_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Standard Name

sea_water_practical_salinity

CF Units

1

The salinity measured from a bottle sample.


DNSSAL

Units

G/KG

Data Type

decimal

DNSSAL_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Standard Name

sea_water_absolute_salinity

Salinity calculated from direct density measurements, also called absolute salinity.


CTDOXY

Units

UMOL/KG

Data Type

decimal

CTDOXY_FLAG_W Definitions

WOCE CTD Quality Codes

Alternate Units

ML/L

CF Standard Name

moles_of_oxygen_per_unit_mass_in_sea_water

The corrected oxygen measured by the CTD.


OXYGEN

Units

UMOL/KG

Data Type

decimal

OXYGEN_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Standard Name

moles_of_oxygen_per_unit_mass_in_sea_water

The dissolved oxygen measured in a discrete sample, typically using the Winkler test for dissolved oxygen.


SILCAT

Units

UMOL/KG

Data Type

decimal

SILCAT_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Standard Name

moles_of_silicate_per_unit_mass_in_sea_water

The concentration of dissolved silicate in sea water.


NH4

Units

UMOL/KG

Data Type

decimal

NH4_FLAG_W Definitions

WOCE Water Sample Quality Codes

The concentration of dissolved ammonium in sea water.


NITRAT

Units

UMOL/KG

Data Type

decimal

NITRAT_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Standard Name

moles_of_nitrate_per_unit_mass_in_sea_water

The concentration of dissolved nitrate in sea water. The chemical formula for the nitrate anion is NO3-.


NITRIT

Units

UMOL/KG

Data Type

decimal

NITRIT_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Standard Name

moles_of_nitrite_per_unit_mass_in_sea_water

The concentration of dissolved nitrite in sea water. The chemical formula for the nitrite anion is NO2-.


PHSPHT

Units

UMOL/KG

Data Type

decimal

PHSPHT_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Standard Name

moles_of_phosphate_per_unit_mass_in_sea_water

The concentration of dissolved phosphate in sea water. The chemical formula for the nitrite anion is NO2-.


NO2+NO3

Units

UMOL/KG

Data Type

decimal

NO2+NO3_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Standard Name

moles_of_nitrate_and_nitrite_per_unit_mass_in_sea_water

The concentration of dissolved nitrate plus nitrite in sea water. The chemical formula for the nitrite anion is NO2-.

Note

Most modern techniques for determining dissolved nitrate return a value of nitrate (NO3) plus nitrite (NO2). A separate determination is then done for nitrite and the result subtracted by the data originator to obtain nitrate. If no separate nitrite determination was carried out - or in rare cases the nitrite number was not subtracted - data providers should list the result as NO2+NO3. Because nitrite values are in most regions small compared to nitrate, most data users will not adversely affect their results by relabeling NO2+NO3 as NITRAT.


CFC-11

Units

PMOL/KG

Data Type

decimal

CFC-11_FLAG_W Definitions

WOCE Water Sample Quality Codes

Error Column Label

CF11ER

CF Standard Name

moles_of_cfc11_per_unit_mass_in_sea_water

The concentration of dissolved CFC11 in sea water. The chemical formula of CFC11 is CFCl3. The IUPAC name for CFC11 is trichloro(fluoro)methane.


CFC-12

Units

PMOL/KG

Data Type

decimal

CFC-12_FLAG_W Definitions

WOCE Water Sample Quality Codes

Error Column Label

CF12ER

The concentration of dissolved CFC12 in sea water. The chemical formula for CFC12 is CF2Cl2. The IUPAC name for CFC12 is dichloro(difluoro)methane.


CFC113

Units

PMOL/KG

Data Type

decimal

CFC113_FLAG_W Definitions

WOCE Water Sample Quality Codes

The concentration of dissolved CFC113 in sea water. The chemical formula of CFC113 is CCl2FCClF2. The IUPAC name for CFC113 is 1,1,2-trichloro-1,2,2-trifluoroethane.


SF6

Units

FMOL/KG

Data Type

decimal

SF6_FLAG_W Definitions

WOCE Water Sample Quality Codes

The concentration of SF6 (Sulfur hexafluoride) in sea water.


TCARBN

Units

UMOL/KG

Data Type

decimal

TCARBN_FLAG_W Definitions

WOCE Water Sample Quality Codes


ALKALI

Units

UMOL/KG

Data Type

decimal

ALKALI_FLAG_W Definitions

WOCE Water Sample Quality Codes

The total alkalinity equivalent concentration (including carbonate, nitrogen, silicate, and borate components).


FCO2

Units

UATM

Data Type

decimal

FCO2_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Standard Name

fugacity_of_carbon_dioxide_in_sea_water

The fugacity is the measured pressure (or partial pressure) of a real gas corrected for the intermolecular forces of that gas, which allows that corrected quantity to be treated like the pressure of an ideal gas in the ideal gas equation PV = nRT. The partial pressure of a dissolved gas in sea water is the partial pressure in air with which it would be in equilibrium. The partial pressure of a gaseous constituent of air is the pressure that it would exert if all other gaseous constituents were removed, assuming the volume, the temperature, and its number of moles remain unchanged. The chemical formula for carbon dioxide is CO2.


FCO2TMP

Units

DEG C

Data Type

decimal

FCO2TMP_FLAG_W Definitions

WOCE Water Sample Quality Codes


PCO2

Units

UATM

Data Type

decimal

PCO2_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Standard Name

partial_pressure_of_carbon_dioxide_in_sea_water

The partial pressure of a dissolved gas in sea water is the partial pressure in air with which it would be in equilibrium. The partial pressure of a gaseous constituent of air is the pressure that it would exert if all other gaseous constituents were removed, assuming the volume, the temperature, and its number of moles remain unchanged. The chemical formula for carbon dioxide is CO2.


PCO2TMP

Units

DEG C

Data Type

decimal

PCO2TMP_FLAG_W Definitions

WOCE Water Sample Quality Codes


PH_TOT

Units

None

Data Type

decimal

PH_TOT_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Standard Name

sea_water_ph_reported_on_total_scale

The measure of acidity of seawater, defined as the negative logarithm of the concentration of dissolved hydrogen ions plus bisulfate ions in a sea water medium; when measured the scale is defined according to a series of buffers prepared in artificial seawater containing bisulfate. The quantity may be written as pH(total) = -log([H+](free) + [HSO4-]).


PH_SWS

Units

None

Data Type

decimal

PH_SWS_FLAG_W Definitions

WOCE Water Sample Quality Codes


PH_TMP

Units

DEG C

Data Type

decimal

PH_TMP_FLAG_W Definitions

WOCE Water Sample Quality Codes


DOC

Units

UMOL/KG

Data Type

decimal

DOC_FLAG_W Definitions

WOCE Water Sample Quality Codes

Dissolved organic carbon


TRITUM

Units

TU

Data Type

decimal

TRITUM_FLAG_W Definitions

WOCE Water Sample Quality Codes

Error Column Label

TRITER

CF Units

1e-18

Note

1 TU is 1 tritium atom per 1018 hydrogen atoms


HELIUM

Units

NMOL/KG

Data Type

decimal

HELIUM_FLAG_W Definitions

WOCE Water Sample Quality Codes

Error Column Label

HELIER


DELHE3

Units

PERCNT

Data Type

decimal

DELHE3_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Units

percent


REFTMP

Units

ITS-90

Data Type

decimal

REFTMP_FLAG_W Definitions

WOCE Water Sample Quality Codes

Alternate Units

DEG C

CF Standard Name

sea_water_temperature

CF Units

degC

Sea water temperature as measured by a reference thermometer, such as an SBE35. These typically only measure when a bottle is triggered and are part of the discrete data stream rather than the CTD one.


REVPRS

Units

DBAR

Data Type

decimal

REVPRS_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Standard Name

sea_water_pressure

Sea water pressure as determined via a pair of reversing thermometers.


REVTMP

Units

ITS-90

Data Type

decimal

REVTMP_FLAG_W Definitions

WOCE Water Sample Quality Codes

Alternate Units

IPTS-68, DEG C

CF Standard Name

sea_water_temperature

CF Units

degC

Sea water temperature as determined via a reversing thermometer.


DELC13

Units

/MILLE

Data Type

decimal

DELC13_FLAG_W Definitions

WOCE Water Sample Quality Codes

Error Column Label

C13ERR

CF Units

1e-3


DELC14

Units

/MILLE

Data Type

decimal

DELC14_FLAG_W Definitions

WOCE Water Sample Quality Codes

Error Column Label

C14ERR

CF Units

1e-3


DON

Units

UMOL/KG

Data Type

decimal

DON_FLAG_W Definitions

WOCE Water Sample Quality Codes

Dissolved organic nitrogen in sea water. ‘Dissolved organic nitrogen’ describes the nitrogen held in carbon compounds in solution. These are mostly generated by plankton excretion and decay.


TOC

Units

None

Data Type

string

TOC_FLAG_W Definitions

WOCE Water Sample Quality Codes


POC

Units

UG/KG

Data Type

decimal

POC_FLAG_W Definitions

WOCE Water Sample Quality Codes

Particulate organic carbon


PON

Units

UG/KG

Data Type

decimal

PON_FLAG_W Definitions

WOCE Water Sample Quality Codes

Particulate organic nitrogen


TDN

Units

UMOL/KG

Data Type

decimal

TDN_FLAG_W Definitions

WOCE Water Sample Quality Codes


TON

Units

None

Data Type

string

TON_FLAG_W Definitions

WOCE Water Sample Quality Codes


NEON

Units

NMOL/KG

Data Type

decimal

NEON_FLAG_W Definitions

WOCE Water Sample Quality Codes

Error Column Label

NEONER


DELO18

Units

/MILLE

Data Type

decimal

DELO18_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Units

1e-3


CCL4

Units

PMOL/KG

Data Type

decimal

CCL4_FLAG_W Definitions

WOCE Water Sample Quality Codes

Error Column Label

CCL4ER

Carbon tetrachloride


NI

Units

None

Data Type

string

NI_FLAG_W Definitions

WOCE Water Sample Quality Codes


ALUMIN

Units

NMOL/L

Data Type

decimal

ALUMIN_FLAG_W Definitions

WOCE Water Sample Quality Codes


BARIUM

Units

NMOL/KG

Data Type

decimal

BARIUM_FLAG_W Definitions

WOCE Water Sample Quality Codes


CU

Units

None

Data Type

string

CU_FLAG_W Definitions

WOCE Water Sample Quality Codes


FE

Units

NMOL/L

Data Type

decimal

FE_FLAG_W Definitions

WOCE Water Sample Quality Codes


MN

Units

NMOL/L

Data Type

decimal

MN_FLAG_W Definitions

WOCE Water Sample Quality Codes


CTDFLUOR

Units

MG/M^3

Data Type

decimal

CTDFLUOR_FLAG_W Definitions

WOCE CTD Quality Codes

Alternate Units

0-5VDC


PAR

Units

None

Data Type

decimal

PAR_FLAG_W Definitions

WOCE CTD Quality Codes

PAR/Irradiance, Biospherical/Licor

Note

From SBE .cnv files, no units


I-129

Units

None

Data Type

string

I-129_FLAG_W Definitions

WOCE Water Sample Quality Codes

Error Column Label

I129ER


RA-226

Units

DM/.1MG

Data Type

decimal

RA-226_FLAG_W Definitions

WOCE Water Sample Quality Codes

Error Column Label

RA-226E

CF Units

0.6 Bq/kg

Note

units are disintegrations per minute per 100kg


RA-228

Units

DM/.1MG

Data Type

decimal

RA-228_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Units

0.6 Bq/kg

Note

units are disintegrations per minute per 100kg


CTDXMISS

Units

%TRANS

Data Type

decimal

CTDXMISS_FLAG_W Definitions

WOCE CTD Quality Codes

Alternate Units

0-5VDC

CF Units

1e-2


CTDBEAMCP

Units

/METER

Data Type

decimal

CTDBEAMCP_FLAG_W Definitions

WOCE CTD Quality Codes

CF Standard Name

volume_beam_attenuation_coefficient_of_radiative_flux_in_sea_water_corrected_for_pure_water_attenuance

CF Units

m^-1

Radiative flux is the sum of shortwave and longwave radiative fluxes. In accordance with common usage in geophysical disciplines, “flux” implies per unit area, called “flux density” in physics. The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. Attenuation is the sum of absorption and scattering. Attenuation is sometimes called “extinction”. Beam attenuation refers to the decrease of radiative flux along the direction of the incident path. It is distinguished from attenuation of the downwelling component of radiative flux from any incident direction, also called “diffuse” attenuation. Corrected for pure water attendance means the attenuation coefficient has been adjusted/calibrated to remove the influence of absorption/scattering from the water itself.


AR-39

Units

PCTMOD

Data Type

decimal

AR-39_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Units

1e-2

Note

The units mean ‘% modern’


CS-137

Units

DM/.1MG

Data Type

decimal

CS-137_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Units

0.6 Bq/kg

Note

units are disintegrations per minute per 100kg


KR-85

Units

DM/MG

Data Type

decimal

KR-85_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Units

6 Bq/kg

Note

units are disintegrations per minute per 1000kg


SR-90

Units

DM/.1MG

Data Type

decimal

SR-90_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Units

0.6 Bq/kg

Note

units are disintegrations per minute per 100kg


N2O

Units

NMOL/KG

Data Type

decimal

N2O_FLAG_W Definitions

WOCE Water Sample Quality Codes

Nitrous oxide


RA-8/6

Units

DM/.1MG

Data Type

string

RA-8/6_FLAG_W Definitions

WOCE Water Sample Quality Codes

Error Column Label

RA-8/6E

CF Units

0.6 Bq/kg


QUALT1

Units

None

Data Type

string

Quality code 1, this is not used in exchange files. In WOCE SEA and CTD files it represents the quality code assigned by the investigator responsible for the measurement. The quality code from QUALT1 is used as the FLAG_W in exchange files if QUALT2 is not available

Warning

QUALT1 does not have woce quality codes. QUALT1_FLAG_W should not appear in data file Parameter and Unit Lines.


QUALT2

Units

None

Data Type

string

Quality code 2, this is not used in exchange files. In WOCE SEA and CTD files it represents the quality code assigned by an independent data quality evaluator (DQE). When available this is the code used in exchange file FLAG_W columns.

Warning

QUALT2 does not have woce quality codes. QUALT2_FLAG_W should not appear in data file Parameter and Unit Lines.


MCHFRM

Units

PMOL/KG

Data Type

decimal

MCHFRM_FLAG_W Definitions

WOCE Water Sample Quality Codes

The concentration of dissolved methyl chloroform in sea water. The IUPAC name for methyl chloroform is 1,1,1-Trichloroethane.


IODATE

Units

NMOL/KG

Data Type

decimal

IODATE_FLAG_W Definitions

WOCE Water Sample Quality Codes


IODIDE

Units

NMOL/KG

Data Type

decimal

IODIDE_FLAG_W Definitions

WOCE Water Sample Quality Codes


CHLORA

Units

UG/KG

Data Type

decimal

CHLORA_FLAG_W Definitions

WOCE Water Sample Quality Codes

Alternate Units

UG/L

chlorophyll-a. Chlorophylls are the green pigments found in most plants, algae and cyanobacteria; their presence is essential for photosynthesis to take place. There are several different forms of chlorophyll that occur naturally. All contain a chlorin ring (chemical formula C20H16N4) which gives the green pigment and a side chain whose structure varies. The naturally occurring forms of chlorophyll contain between 35 and 55 carbon atoms. Chlorophyll-a is the most commonly occurring form of natural chlorophyll. The chemical formula of chlorophyll-a is C55H72O5N4Mg.


PPHYTN

Units

UG/KG

Data Type

decimal

PPHYTN_FLAG_W Definitions

WOCE Water Sample Quality Codes

Phaeophytin


CH3CL

Units

PMOL/KG

Data Type

decimal

CH3CL_FLAG_W Definitions

WOCE Water Sample Quality Codes

Chloromethane


CH4

Units

NMOL/KG

Data Type

decimal

CH4_FLAG_W Definitions

WOCE Water Sample Quality Codes

Methane


DMS

Units

None

Data Type

string

DMS_FLAG_W Definitions

WOCE Water Sample Quality Codes

The chemical formula for dimethyl sulfide is (CH3)2S. Dimethyl sulfide is sometimes referred to as DMS.


AZOTE

Units

None

Data Type

string

AZOTE_FLAG_W Definitions

WOCE Water Sample Quality Codes

Dissolved N2 Gas in sea water.


CALCIUM

Units

None

Data Type

string

CALCIUM_FLAG_W Definitions

WOCE Water Sample Quality Codes


ARGON

Units

UMOL/KG

Data Type

decimal

ARGON_FLAG_W Definitions

WOCE Water Sample Quality Codes


14C-DOC

Units

/MILLE

Data Type

decimal

14C-DOC_FLAG_W Definitions

WOCE Water Sample Quality Codes

CF Units

1e-3


D15N_NO3

Units

None

Data Type

decimal

D15N_NO3_FLAG_W Definitions

WOCE Water Sample Quality Codes


UREA

Units

UMOL/KG

Data Type

decimal

UREA_FLAG_W Definitions

WOCE Water Sample Quality Codes

Urea has the chemical formula CO(NH2)2


TOT_CHL_A

Units

MG/M^3

Data Type

decimal

TOT_CHL_A_FLAG_W Definitions

WOCE Water Sample Quality Codes

Total chlorophyll a measured using HPLC

SeaBass Description:HPLC DV_Chl_a + MV_Chl_a + Chlide_a + Chl_a_allom + Chl_a_prime

Note

A different measurement than CHLORA


TOT_CHL_B

Units

MG/M^3

Data Type

decimal

TOT_CHL_B_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC DV_Chl_b + MV_Chl_b


TOT_CHL_C

Units

MG/M^3

Data Type

decimal

TOT_CHL_C_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC chl_c1 + chl_c2 (chl_c1c2) + chl_c3


ALPHA-BETA-CAR

Units

MG/M^3

Data Type

decimal

ALPHA-BETA-CAR_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Alpha (Beta,epsilon) + Beta (Beta,beta) Carotenes


BUT-FUCO

Units

MG/M^3

Data Type

decimal

BUT-FUCO_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC 19’-Butanoyloxyfucoxanthin


HEX-FUCO

Units

MG/M^3

Data Type

decimal

HEX-FUCO_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC 19’-Hexanoyloxyfucoxanthin


ALLO

Units

MG/M^3

Data Type

decimal

ALLO_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Alloxanthin


DIADINO

Units

MG/M^3

Data Type

decimal

DIADINO_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Diadinoxanthin


DIATO

Units

MG/M^3

Data Type

decimal

DIATO_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Diatoxanthin


HFUCO

Units

MG/M^3

Data Type

decimal

HFUCO_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Fucoxanthin


PERID

Units

MG/M^3

Data Type

decimal

PERID_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Peridinin


ZEA

Units

MG/M^3

Data Type

decimal

ZEA_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Zeaxanthin


MV_CHL_A

Units

MG/M^3

Data Type

decimal

MV_CHL_A_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Monovinyl Chlorophyll a


DV_CHL_A

Units

MG/M^3

Data Type

decimal

DV_CHL_A_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Divinyl Chlorophyll a


CHLIDE_A

Units

MG/M^3

Data Type

decimal

CHLIDE_A_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Chlorophyllide a


MV_CHL_B

Units

MG/M^3

Data Type

decimal

MV_CHL_B_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Monovinyl Chlorophyll b


DV_CHL_B

Units

MG/M^3

Data Type

decimal

DV_CHL_B_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Divinyl Chlorophyll B


CHL_C1C2

Units

MG/M^3

Data Type

decimal

CHL_C1C2_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Chlorophyll c1 + c2


CHL_C3

Units

MG/M^3

Data Type

decimal

CHL_C3_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Chlorophyll c3


LUT

Units

MG/M^3

Data Type

decimal

LUT_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Lutein


NEO

Units

MG/M^3

Data Type

decimal

NEO_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Neoxanthin


VIOLA

Units

MG/M^3

Data Type

decimal

VIOLA_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Violaxanthin


PHYTIN_A

Units

MG/M^3

Data Type

decimal

PHYTIN_A_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Pheophytin a


PHIDE_A

Units

MG/M^3

Data Type

decimal

PHIDE_A_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Pheophorbide a


PRAS

Units

MG/M^3

Data Type

decimal

PRAS_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Prasinoxanthin


GYRO

Units

MG/M^3

Data Type

decimal

GYRO_FLAG_W Definitions

WOCE Water Sample Quality Codes

HPLC Gyroxanthin-Diester


BTL_DATE

Units

None

Data Type

string

Date of an individual bottle closure in the same format as DATE, for the canonical reported station date, use DATE

Warning

BTL_DATE does not have woce quality codes. BTL_DATE_FLAG_W should not appear in data file Parameter and Unit Lines.


BTL_TIME

Units

None

Data Type

string

Time of an individual bottle closure in the same format as TIME, for the canonical reported station time, use TIME

Warning

BTL_TIME does not have woce quality codes. BTL_TIME_FLAG_W should not appear in data file Parameter and Unit Lines.


BTL_LAT

Units

None

Data Type

decimal

Latitude (ship position) of an individual bottle closure in the same format as LATITUDE, for the canonical reported station latitude, use LATITUDE

Warning

BTL_LAT does not have woce quality codes. BTL_LAT_FLAG_W should not appear in data file Parameter and Unit Lines.


BTL_LON

Units

None

Data Type

decimal

Longitude (ship position) of an individual bottle closure in the same format as LONGITUDE, for the canonical reported station longitude, use LONGITUDE

Warning

BTL_LON does not have woce quality codes. BTL_LON_FLAG_W should not appear in data file Parameter and Unit Lines.


CTDNOBS

Units

None

Data Type

integer

CF Standard Name

number_of_observations

The number of discrete observations from which the values of another data variable have been derived

Warning

CTDNOBS does not have woce quality codes. CTDNOBS_FLAG_W should not appear in data file Parameter and Unit Lines.


CTDETIME

Units

SECONDS

Data Type

decimal

The elapsed time of CTD pressure bin

Warning

CTDETIME does not have woce quality codes. CTDETIME_FLAG_W should not appear in data file Parameter and Unit Lines.


THETA

Units

DEG C

Data Type

decimal

THETA_FLAG_W Definitions

WOCE CTD Quality Codes

Alternate Units

ITS-90, IPTS-68

CF Standard Name

sea_water_potential_temperature

CF Units

degC

Sea water potential temperature is the temperature a parcel of sea water would have if moved adiabatically to sea level pressure.

Note

Typically does not have quality flags.