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.
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
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
- CF Units
meters
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
- CF Standard Name
sea_water_pressure
- CF Units
dbar
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
- CF Standard Name
sea_water_pressure
- CF Units
dbar
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
- 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
- CF Standard Name
sea_water_practical_salinity
- CF Units
1
The corrected practical salinity as measured (calculated) by the CTD.
SALNTY¶
- Units
PSS-78
- Data Type
decimal
- SALNTY_FLAG_W Definitions
- CF Standard Name
sea_water_practical_salinity
- CF Units
1
The practical salinity measured from a bottle sample.
DNSSAL¶
- Units
G/KG
- Data Type
decimal
- DNSSAL_FLAG_W Definitions
- CF Standard Name
sea_water_absolute_salinity
- CF Units
g/kg
Absolute salinity calculated from direct density measurements, also called absolute salinity.
CTDSVLSAL¶
- Units
G/KG
- Data Type
decimal
- CTDSVLSAL_FLAG_W Definitions
- CF Standard Name
sea_water_absolute_salinity
- CF Units
g/kg
Absolute salinity calculated from sound velocity and temperature, also called absolute salinity.
CTDOXY¶
- Units
UMOL/KG
- Data Type
decimal
- CTDOXY_FLAG_W Definitions
- Alternate Units
ML/L
- CF Standard Name
moles_of_oxygen_per_unit_mass_in_sea_water
- CF Units
umol/kg
The corrected oxygen measured by the CTD.
OXYGEN¶
- Units
UMOL/KG
- Data Type
decimal
- OXYGEN_FLAG_W Definitions
- CF Standard Name
moles_of_oxygen_per_unit_mass_in_sea_water
- CF Units
umol/kg
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
- Error Column Label
SILUNC
- CF Standard Name
moles_of_silicate_per_unit_mass_in_sea_water
- CF Units
umol/kg
The concentration of dissolved silicate in sea water.
NH4¶
- Units
UMOL/KG
- Data Type
decimal
- NH4_FLAG_W Definitions
- CF Units
umol/kg
The concentration of dissolved ammonium in sea water.
NITRAT¶
- Units
UMOL/KG
- Data Type
decimal
- NITRAT_FLAG_W Definitions
- Error Column Label
NRAUNC
- CF Standard Name
moles_of_nitrate_per_unit_mass_in_sea_water
- CF Units
umol/kg
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
- Error Column Label
NRIUNC
- CF Standard Name
moles_of_nitrite_per_unit_mass_in_sea_water
- CF Units
umol/kg
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
- Error Column Label
PHPUNC
- CF Standard Name
moles_of_phosphate_per_unit_mass_in_sea_water
- CF Units
umol/kg
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
- CF Standard Name
moles_of_nitrate_and_nitrite_per_unit_mass_in_sea_water
- CF Units
umol/kg
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
- Error Column Label
CF11ER
- CF Standard Name
moles_of_cfc11_per_unit_mass_in_sea_water
- CF Units
pmol/kg
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
- Error Column Label
CF12ER
- CF Units
pmol/kg
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
- CF Units
pmol/kg
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
- CF Units
fmol/kg
The concentration of SF6 (Sulfur hexafluoride) in sea water.
ALKALI¶
- Units
UMOL/KG
- Data Type
decimal
- ALKALI_FLAG_W Definitions
- CF Units
umol/kg
The total alkalinity equivalent concentration (including carbonate, nitrogen, silicate, and borate components).
FCO2¶
- Units
UATM
- Data Type
decimal
- FCO2_FLAG_W Definitions
- CF Standard Name
fugacity_of_carbon_dioxide_in_sea_water
- CF Units
uatm
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
- CF Standard Name
temperature_of_analysis_of_sea_water
- CF Units
degC
PCO2¶
- Units
UATM
- Data Type
decimal
- PCO2_FLAG_W Definitions
- CF Standard Name
partial_pressure_of_carbon_dioxide_in_sea_water
- CF Units
uatm
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
- CF Standard Name
temperature_of_analysis_of_sea_water
- CF Units
degC
PH_TOT¶
- Units
None
- Data Type
decimal
- PH_TOT_FLAG_W Definitions
- 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_TMP¶
- Units
DEG C
- Data Type
decimal
- PH_TMP_FLAG_W Definitions
- CF Standard Name
temperature_of_analysis_of_sea_water
- CF Units
degC
DOC¶
- Units
UMOL/KG
- Data Type
decimal
- DOC_FLAG_W Definitions
- CF Units
umol/kg
Dissolved organic carbon
TRITUM¶
- Units
TU
- Data Type
decimal
- TRITUM_FLAG_W Definitions
- 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
- Error Column Label
HELIER
- CF Units
nmol/kg
DELHE3¶
- Units
PERCNT
- Data Type
decimal
- DELHE3_FLAG_W Definitions
- Error Column Label
DELHER
- CF Units
percent
REFTMP¶
- Units
ITS-90
- Data Type
decimal
- REFTMP_FLAG_W Definitions
- 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
- CF Standard Name
sea_water_pressure
- CF Units
dbar
Sea water pressure as determined via a pair of reversing thermometers.
REVTMP¶
- Units
ITS-90
- Data Type
decimal
- REVTMP_FLAG_W Definitions
- 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
- Error Column Label
C13ERR
- CF Units
1e-3
DELC14¶
- Units
/MILLE
- Data Type
decimal
- DELC14_FLAG_W Definitions
- Error Column Label
C14ERR
- CF Units
1e-3
DON¶
- Units
UMOL/KG
- Data Type
decimal
- DON_FLAG_W Definitions
- CF Units
umol/kg
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.
PON¶
- Units
UG/KG
- Data Type
decimal
- PON_FLAG_W Definitions
- CF Units
ug/kg
Particulate organic nitrogen
NEON¶
- Units
NMOL/KG
- Data Type
decimal
- NEON_FLAG_W Definitions
- Error Column Label
NEONER
- CF Units
nmol/kg
DELO18¶
- Units
/MILLE
- Data Type
decimal
- DELO18_FLAG_W Definitions
- Error Column Label
O18ERR
- CF Units
1e-3
Enrichment of the 18O/16O isotopic ratio of the sea water itself compared to VSMOW (Vienna Standard Mean Ocean Water).
CCL4¶
- Units
PMOL/KG
- Data Type
decimal
- CCL4_FLAG_W Definitions
- Error Column Label
CCL4ER
- CF Units
pmol/kg
Carbon tetrachloride
FE¶
- Units
NMOL/L
- Data Type
decimal
- FE_FLAG_W Definitions
- CF Standard Name
mole_concentration_of_dissolved_iron_in_sea_water
- CF Units
nmol/l
CTDFLUOR¶
- Units
MG/M^3
- Data Type
decimal
- CTDFLUOR_FLAG_W Definitions
- Alternate Units
0-5VDC, None
- CF Units
mg/m^3
PAR¶
- Units
UMOL/M^2/SEC
- Data Type
decimal
- PAR_FLAG_W Definitions
- CF Standard Name
downwelling_photosynthetic_photon_flux_in_sea_water
- CF Units
umol m-2 s-1
Photosynthetically active radiation. The downwelling photon flux of photons with a wavelength between 400nm and 700nm.
I-129¶
- Units
BQ/M^3
- Data Type
decimal
- I-129_FLAG_W Definitions
- Error Column Label
I129ER
- CF Units
Bq m-3
RA-226¶
- Units
DM/.1MG
- Data Type
decimal
- RA-226_FLAG_W Definitions
- Error Column Label
RA-226E
- CF Units
0.000166 Bq/kg
Note
units are disintegrations per minute per 100kg
RA-228¶
- Units
DM/.1MG
- Data Type
decimal
- RA-228_FLAG_W Definitions
- CF Units
0.000166 Bq/kg
Note
units are disintegrations per minute per 100kg
CTDXMISS¶
- Units
%TRANS
- Data Type
decimal
- CTDXMISS_FLAG_W Definitions
- Alternate Units
0-5VDC
- CF Units
1e-2
CTDBEAMCP¶
- Units
/METER
- Data Type
decimal
- CTDBEAMCP_FLAG_W Definitions
- 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
- CF Units
1e-2
Note
The units mean ‘% modern’
CS-137¶
- Units
DM/.1MG
- Data Type
decimal
- CS-137_FLAG_W Definitions
- CF Units
0.000166 Bq/kg
Note
units are disintegrations per minute per 100kg
KR-85¶
- Units
DM/MG
- Data Type
decimal
- KR-85_FLAG_W Definitions
- CF Units
0.0000166 Bq/kg
Note
units are disintegrations per minute per 1000kg
SR-90¶
- Units
DM/.1MG
- Data Type
decimal
- SR-90_FLAG_W Definitions
- CF Units
0.000166 Bq/kg
Note
units are disintegrations per minute per 100kg
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
- CF Units
pmol/kg
The concentration of dissolved methyl chloroform in sea water. The IUPAC name for methyl chloroform is 1,1,1-Trichloroethane.
CHLORA¶
- Units
UG/KG
- Data Type
decimal
- CHLORA_FLAG_W Definitions
- Alternate Units
UG/L
- CF Units
ug/kg
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.
CH3CL¶
- Units
PMOL/KG
- Data Type
decimal
- CH3CL_FLAG_W Definitions
- CF Units
pmol/kg
Concentration of Methyl Chloride
DMS¶
- Units
NMOL/L
- Data Type
decimal
- DMS_FLAG_W Definitions
- CF Units
nmol/l
The chemical formula for dimethyl sulfide is (CH3)2S. Dimethyl sulfide is sometimes referred to as DMS.
UREA¶
- Units
UMOL/KG
- Data Type
decimal
- UREA_FLAG_W Definitions
- CF Units
umol/kg
Urea has the chemical formula CO(NH2)2
TOT_CHL_A¶
- Units
MG/M^3
- Data Type
decimal
- TOT_CHL_A_FLAG_W Definitions
- CF Units
mg/m^3
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
- CF Units
mg/m^3
HPLC DV_Chl_b + MV_Chl_b
TOT_CHL_C¶
- Units
MG/M^3
- Data Type
decimal
- TOT_CHL_C_FLAG_W Definitions
- CF Units
mg/m^3
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
- CF Units
mg/m^3
HPLC Alpha (Beta,epsilon) + Beta (Beta,beta) Carotenes
BUT-FUCO¶
- Units
MG/M^3
- Data Type
decimal
- BUT-FUCO_FLAG_W Definitions
- CF Units
mg/m^3
HPLC 19’-Butanoyloxyfucoxanthin
HEX-FUCO¶
- Units
MG/M^3
- Data Type
decimal
- HEX-FUCO_FLAG_W Definitions
- CF Units
mg/m^3
HPLC 19’-Hexanoyloxyfucoxanthin
DIADINO¶
- Units
MG/M^3
- Data Type
decimal
- DIADINO_FLAG_W Definitions
- CF Units
mg/m^3
HPLC Diadinoxanthin
MV_CHL_A¶
- Units
MG/M^3
- Data Type
decimal
- MV_CHL_A_FLAG_W Definitions
- CF Units
mg/m^3
HPLC Monovinyl Chlorophyll a
DV_CHL_A¶
- Units
MG/M^3
- Data Type
decimal
- DV_CHL_A_FLAG_W Definitions
- CF Units
mg/m^3
HPLC Divinyl Chlorophyll a
CHLIDE_A¶
- Units
MG/M^3
- Data Type
decimal
- CHLIDE_A_FLAG_W Definitions
- CF Units
mg/m^3
HPLC Chlorophyllide a
MV_CHL_B¶
- Units
MG/M^3
- Data Type
decimal
- MV_CHL_B_FLAG_W Definitions
- CF Units
mg/m^3
HPLC Monovinyl Chlorophyll b
DV_CHL_B¶
- Units
MG/M^3
- Data Type
decimal
- DV_CHL_B_FLAG_W Definitions
- CF Units
mg/m^3
HPLC Divinyl Chlorophyll B
CHL_C1C2¶
- Units
MG/M^3
- Data Type
decimal
- CHL_C1C2_FLAG_W Definitions
- CF Units
mg/m^3
HPLC Chlorophyll c1 + c2
CHL_C3¶
- Units
MG/M^3
- Data Type
decimal
- CHL_C3_FLAG_W Definitions
- CF Units
mg/m^3
HPLC Chlorophyll c3
PHYTIN_A¶
- Units
MG/M^3
- Data Type
decimal
- PHYTIN_A_FLAG_W Definitions
- CF Units
mg/m^3
HPLC Pheophytin a
PHIDE_A¶
- Units
MG/M^3
- Data Type
decimal
- PHIDE_A_FLAG_W Definitions
- CF Units
mg/m^3
HPLC Pheophorbide a
GYRO¶
- Units
MG/M^3
- Data Type
decimal
- GYRO_FLAG_W Definitions
- CF Units
mg/m^3
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
- CF Standard Name
latitude
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
- CF Standard Name
longitude
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
- CF Units
seconds
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.
INSTRUMENT_ID¶
- Units
None
- Data Type
string
The serial number of the CTD. In the case of SBE9plus, this is the serial number of the main housing, not the sensors.
Warning
INSTRUMENT_ID does not have woce quality codes. INSTRUMENT_ID_FLAG_W should not appear in data file Parameter and Unit Lines.
THETA¶
- Units
DEG C
- Data Type
decimal
- THETA_FLAG_W Definitions
- 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.
OXYGEN¶
- Units
ML/L
- Data Type
decimal
- OXYGEN_FLAG_W Definitions
- CF Standard Name
volume_fraction_of_oxygen_in_sea_water
- CF Units
ml/l
The dissolved oxygen measured in a discrete sample, typically using the Winkler test for dissolved oxygen.
AOU¶
- Units
UMOL/KG
- Data Type
decimal
- AOU_FLAG_W Definitions
- CF Standard Name
apparent_oxygen_utilization
- CF Units
umol/kg
Apparent Oxygen Utilization (AOU) is the difference between measured dissolved oxygen concentration in water, and the equilibrium saturation concentration of dissolved oxygen in water with the same physical and chemical properties.
ARABI¶
- Units
NMOL/KG
- Data Type
decimal
- ARABI_FLAG_W Definitions
- CF Units
nmol/kg
Concentration of Arabanose after hydrolysis
BACT¶
- Units
E8/L
- Data Type
decimal
- BACT_FLAG_W Definitions
- CF Units
1e8 l-1
Cell count of non pigmented heterotrophic bacterioplankton through FCM
PEUK¶
- Units
E6/L
- Data Type
decimal
- PEUK_FLAG_W Definitions
- CF Units
1e6 l-1
Pigmented Picoeukaryotes cell count
PROC¶
- Units
E7/L
- Data Type
decimal
- PROC_FLAG_W Definitions
- CF Units
1e7 l-1
Prochlorophyte Cell Count
BLACKC¶
- Units
UMOL/L
- Data Type
decimal
- BLACKC_FLAG_W Definitions
- CF Units
umol l-1
Black carbon (e.g. soot) concentration
BRDU¶
- Units
UMOL/L/H
- Data Type
decimal
- BRDU_FLAG_W Definitions
- CF Units
umol l-1 h-1
Bacterial Production via BrdU (Bromodeoxyuridine ) uptake Method
CH3BR¶
- Units
PMOL/KG
- Data Type
decimal
- CH3BR_FLAG_W Definitions
- CF Units
pmol/kg
Concentration of Methyl Bromide
CH3I¶
- Units
PMOL/KG
- Data Type
decimal
- CH3I_FLAG_W Definitions
- CF Units
pmol/kg
Concentration of Methyl Iodide
DCNS¶
- Units
NMOL/KG
- Data Type
decimal
- DCNS_FLAG_W Definitions
- CF Units
nmol/kg
Dissolved Combined Neutral Sugars
DELO17¶
- Units
/MILLE
- Data Type
decimal
- DELO17_FLAG_W Definitions
- CF Units
1e-3
Enrichment of the 17O/16O isotopic ratio of the sea water itself compared to VSMOW (Vienna Standard Mean Ocean Water).
FCO2IN¶
- Units
UATM
- Data Type
decimal
- FCO2IN_FLAG_W Definitions
- CF Standard Name
fugacity_of_carbon_dioxide_in_sea_water
- CF Units
uatm
In situ fugacity of CO2 gas
Note
Usually calcualted
FUCO¶
- Units
NMOL/KG
- Data Type
decimal
- FUCO_FLAG_W Definitions
- CF Units
nmol/kg
Concentration of Fucose after hydrolyses
GALA¶
- Units
NMOL/KG
- Data Type
decimal
- GALA_FLAG_W Definitions
- CF Units
nmol/kg
Concentration of Galactose after hydrolysis
GLUC¶
- Units
NMOL/KG
- Data Type
decimal
- GLUC_FLAG_W Definitions
- CF Units
nmol/kg
Concentration of Glucose after hydrolysis
LAB_DEN¶
- Units
KG/M^3
- Data Type
decimal
- LAB_DEN_FLAG_W Definitions
- CF Units
kg m-3
Density measured in a lab, not calcualted from temperature, salinity, and pressure
MAN¶
- Units
NMOL/KG
- Data Type
decimal
- MAN_FLAG_W Definitions
- CF Units
nmol/kg
Concentration of Mannose after hydrolysis
PIGMENTS¶
- Units
None
- Data Type
decimal
- PIGMENTS_FLAG_W Definitions
Phytoplankton pigments
Note
This is almost always a placeholder for samples collected for HPLC analysis later, the results of which are published at NASA SeaBASS
RHAM¶
- Units
NMOL/KG
- Data Type
decimal
- RHAM_FLAG_W Definitions
- CF Units
nmol/kg
Concetration of Rhamnose after hydrolysis
SALTREF¶
- Units
G/KG
- Data Type
decimal
- SALTREF_FLAG_W Definitions
- CF Standard Name
sea_water_reference_salinity
- CF Units
g/kg
Salinity reported on the Reference-Composition Salinity Scale, reported in units of “absolute salinity” (g/kg). If a sea water sample has the Reference Composition (defined in Millero et al., 2008), then its Reference Salinity is the best available estimate of its Absolute Salinity. For general purposes, Reference Salinity is (35.16504 g kg-1)/35 times Practical Salinity. Reference: www.teos-10.org; Millero et al., 2008 doi: 10.1016/j.dsr.2007.10.001.
Note
See “The composition of Standard Seawater and the definition of the Reference-Composition Salinity Scale” by Millero et. al (2007) 10.1016/j.dsr.2007.10.001
SF5CF3¶
- Units
FMOL/KG
- Data Type
decimal
- SF5CF3_FLAG_W Definitions
- CF Units
fmol/kg
Concentration of Trifluoromethyl Sulfur Pentafluoride
DWNPRS¶
- Units
DBAR
- Data Type
decimal
- DWNPRS_FLAG_W Definitions
- CF Units
dbar
Pressure on the downcast for the same isopycnal as the upcast
SIG0¶
- Units
KG/M^3
- Data Type
decimal
- SIG0_FLAG_W Definitions
- CF Standard Name
sea_water_sigma_theta
- CF Units
kg m-3
Potential density anomaly referenced to 0 dbar (ocean surface)
SOMSAL¶
- Units
PSS-78
- Data Type
decimal
- SOMSAL_FLAG_W Definitions
- CF Standard Name
sea_water_practical_salinity
- CF Units
1
Salinity measured by a Single-Operator Multiparameter Metabolic Analyzer (SOMMA), used in sea water CO2 analysis
DWNOXY¶
- Units
UMOL/KG
- Data Type
decimal
- DWNOXY_FLAG_W Definitions
- CF Standard Name
moles_of_oxygen_per_unit_mass_in_sea_water
- CF Units
umol/kg
CTD Oxygen on the downcast for the same isopycnal as the upcast