Parameter Naming Conventions

Standard hydrographic parameters in the GEOTRACES IDP2014, such as pressure, depth, oxygen, and nutrients, use names as defined in the WOCE/CLIVAR naming conventions (http://cchdo.ucsd.edu/parameter_descriptions). Examples are CTDPRS, CTDTMP, CTDSAL and CTDOXY for pressure, temperature, salinity and oxygen from CTD sensors, or SALNTY, PHSPHT, NITRAT, PHSPHT, SILCAT for salinity, phosphate, nitrate and silicate measured on bottle samples.

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

3

Atomic mass (optional; two entries for isotope ratios)

_56, _208_204

4

Phase on which element or compound was measured (mandatory)

_C (colloidal)

_D (dissolved)

_F (free (un-complexed))

_LP (large particulate)

_LPT (large particulate, total (unleached))

_S (soluble)

_SP (small particulate)

_SPL (small particulate, labile fraction)

_SPR (small particulate, refractory fraction)

_SPT (small particulate, total (unleached))

_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

 

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_D_EPSILON_BOTTLE

Atom ratio of dissolved Nd isotopes expressed in conventional EPSILON notation

Cd_114_D_EPSILON_BOTTLE

Atom ratio of dissolved Cd isotopes expressed in conventional EPSILON notation

Cu_II_F_CONC_BOTTLE

Concentration of free Cu++

Pb_206_204_D_RATIO_BOTTLE

Atom ratio of given isotopes for dissolved Pb

DIC_13_D_DELTA_BOTTLE

d13C of DIC

DIC_14_D_DELTA_BOTTLE

D14C of DIC

NO3_15_D_DELTA_BOTTLE

d15N of nitrate

L1Fe_D_CONC_BOTTLE

Concentration of dissolved L1 Fe-binding ligand

L1Fe_D_LogK_BOTTLE

Log of the stability constant of L1 Fe