Parameter Naming Conventions

Standard hydrographic parameters in the GEOTRACES IDP2017, 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). †Other hydrographic parameters use names defined intuitively.† Examples are PRESSURE for the CTD pressure at the bottle sample depth, SALINTY, PHOSPHATE, NITRATE, and SILICATE for salinity, phosphate, nitrate and silicate measured on bottle samples. †Biogeochemistry parameters in the GEOTRACES IDP 2017 use names defined in SCOR naming convention (eg. HPLC pigments; SCOR WG78) or names that intuitively define the parameters (eg. nifH_UCYN-A_DNA_P_CONC_BOTTLE; abundance nifH Uncultured unicellular cyanobacteria (UCYN-A)). ††

All other trace elements and isotope names are composed of up to six separate tokens as shown below:

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))

_LP (large particulate)

_LPT (large particulate, total (unleached))

_R (Rain)

_S (soluble)

_SML (soluble mild leach)

_SSL (soluble strong leach)

_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

_DELTA

_EPSILON

_LogK

_RATIO

6

Sampling system (mandatory)

_BOTTLE

_FISH

_PUMP

_UWAY

_HIVOL

_AUTO

 

Examples

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

d13C of DIC

DIC_14_12_D_DELTA_BOTTLE

D14C of DIC

NITRATE_15_14_D_DELTA_BOTTLE

d15N of nitrate

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)