Parameter Naming Conventions

The IDP2017 employs the following parameter naming scheme. Standard hydrographic parameters, such as temperature, salinity and oxygen use names as defined in the WOCE/CLIVAR naming convention (CTDTMP, CTDSAL and CTDOXY for temperature, salinity and oxygen from CTD sensors; https://exchange-format.readthedocs.io/en/latest/parameters.html).† Other hydrographic parameters use names defined intuitively.† Examples are PRESSURE for the CTD pressure at the bottle sample depth, SALINITY, PHOSPHATE, NITRATE, and SILICATE for salinity, phosphate, nitrate and silicate measured on bottle samples.† Biogeochemistry parameters in the IDP2017 use names defined by SCOR naming conventions (e.g., HPLC pigments; Roy et al., 2011) or names that intuitively define the parameters (e.g., nifH_UCYN-A_DNA_P_CONC_BOTTLE; concentration of nifH genes from uncultured unicellular cyanobacteria (UCYN-A) particles (P) in a bottle sample). †††

All other trace elements and isotope names are composed of up to six separate tokens as shown below. Tokens 2 and 3 are optional, while all other tokens are mandatory.

1

2

3

4

5

6

Element/

Compound

[_Oxidation State]

[_Atomic Mass]

_Phase

_DataType

_Sampling System

 

Explanations

#

Explanation

Example

1

Element or compound (mandatory)

Fe, Th, DIC, NO3, L1Fe

2

Oxidation state as roman number (optional)

_II, _IV, _III_V_ where III and V are combined

3

Atomic mass (optional); two entries for isotope ratios

_228, _208_204

4

Phase on which element or compound was measured (mandatory); may include two components (e.g., _R_TD_ refers to the Total Dissolvable concentration of a constituent in Rain; _MM_D_ refers to the dissolved concentration of the monomethyl form of a constituent)

_A (aerosol)

_C (colloidal)

_D (dissolved)

_DL (dissolved labile)

_F (free (un-complexed))

_LPT (large particulate, total (unleached))

_R (rain)

_S (soluble)

_SMLH2O (soluble mild leach with ultrapure water)

_SMLSW (soluble mild leach with seawater)

_SSLNH4AC (soluble strong leach with ammonium acetate)

_SSLHAC (soluble strong leach with acetic acid)

_SP (small particulate)

_SPL (small particulate, labile fraction)

_SPR (small particulate, refractory fraction)

_SPT (small particulate, total (unleached))

_T (total)

_TD (total dissolvable)

_TP (total particulate)

_TPL (total particulate, labile fraction)

_TPR (total particulate, refractory fraction)

5

DataType (mandatory)

_CONC (concentration)

_DELTA (isotope ratio in delta notation)

_EPSILON (isotope ratio in epsilon notation)

_LogK (log of binding constant of ligand)

_RATIO (atomic abundance ratio of isotopes)

6

Sampling system (mandatory)

_BOTTLE (Niskin or similar water sampling bottle)

_FISH (trace-metal clean towed surface sampler)

_PUMP (either in-situ pump or on-deck pump)

_UWAY (shipís underway surface seawater)

_HIVOL (high-volume aerosol sampler)

_LOWVOL (low-volume aerosol sampler)

_FINE_IMPACTOR (size-fractionated aerosols, small fraction)

_COARSE_IMPACTOR (size-fractionated aerosols, large fraction)

_AUTO (automated aerosol sampler)

_MAN (aerosol sampler with manual on-off controls)

 

Examples

Parameter Name

Parameter description

Fe_D_CONC_BOTTLE

Concentration of dissolved Fe

Fe_II_D_CONC_BOTTLE

Concentration of dissolved Fe(II)

Fe_II_TP_CONC_BOTTLE

Concentration of total particulate Fe(II) determined by filtration from a water sampling bottle

Fe_TPL_CONC_BOTTLE

Concentration of labile particulate iron determined by filtration from a water sampling bottle

Nd_143_144_D_RATIO_BOTTLE

Atom ratio of given isotopes for dissolved Nd

Nd_143_144_D_EPSILON_BOTTLE

Atom ratio of dissolved Nd isotopes expressed in conventional EPSILON notation

Cd_114_110_D_DELTA_BOTTLE

Atom ratio of dissolved Cd isotopes expressed in conventional DELTA notation

Cu_Cuí_D_CONC_BOTTLE

Concentration of dissolved inorganic Cu

Pb_206_204_D_RATIO_BOTTLE

Atom ratio of given isotopes for dissolved Pb

DIC_13_12_D_DELTA_BOTTLE

Atom ratio of given isotopes for dissolved C as DIC in delta notation

DIC_14_12_D_DELTA_BOTTLE

Atom ratio of radiocarbon as dissolved C in DIC in DELTA notation

NITRATE_15_14_D_DELTA_BOTTLE

Atom ratio of given isotopes for dissolved N as nitrate in delta notation

L1_Fe_D_CONC_BOTTLE

Concentration of dissolved L1 Fe-binding ligand

L1_Fe_D_LogK_BOTTLE

Log of the stability constant of L1 Fe

HOMOCYS_D_CONC_BOTTLE

Concentration of dissolved homocysteine

Chl a_HPLC_P_CONC_BOTTLE

Concentration of particulate Chlorophyll a measured using HPLC method

nifH_UCYN-A_DNA_P_CONC_BOTTLE

Abundance nifH Uncultured unicellular cyanobacteria (UCYN-A)

Al_A_T_CONC_HIVOL

Total aerosol Al concentration, high-volume sampler

Al_A_SMLH2O_CONC_HIVOL

Soluble aerosol Al concentration, mild leach with ultrapure water, high-volume sampler

Al_A_SMLSW_CONC_HIVOL

Soluble aerosol Al concentration, mild leach with seawater, high-volume sampler

Al_A_SMLH2O_CONC_COARSE_IMPACTOR

Soluble aerosol Al concentration, mild leach with ultrapure water, coarse fraction, impactor sampler

Al_A_SMLH2O_CONC_FINE_IMPACTOR

Soluble aerosol Al concentration, mild leach with ultrapure water, fine fraction, impactor sampler

Al_A_SSLNH4AC_CONC_HIVOL

Soluble aerosol Al concentration, strong leach with ammonium acetate, high-volume sampler

Al_A_SSLNH4AC_CONC_COARSE_IMPACTOR

 

Soluble aerosol Al concentration, strong leach with ammonium acetate, coarse fraction, impactor sampler

Al_A_SSLNH4AC_CONC_FINE_IMPACTOR

Soluble aerosol Al concentration, strong leach with ammonium acetate, fine fraction, impactor sampler