Parameter: Ar

Dataset: 
LabSea_Hamme et al 2017
Parameter: 
dissolved noble gas concentration
Master parameters information
Short Name:
 diss_noble_gas_conc
Short Description:
 dissolved noble gas concentration
Official Name:
 diss_noble_gas_conc
No Data Value:
 nd
Description:
 

Dissolved noble gas concentration in the water column. Refer to dataset for element name and units.

Dataset-parameters information
Supplied Name: 
Ar
Supplied Units: 
micromol/kilogram
Conversion Necessary: 
no
No Data Value: 
NaN
Description: 

Ar concentration in umol/kg determined by Ar isotope dilution with 38Ar. As discussed in the paper, the 2007 measurements follow Hamme and Severinghaus (2007) "Trace gas disequilibria during deep-water formation" Deep Sea Research I: 54(6):939-950 while the later measurements use a similar method but with a helium balance gas. Standard gases are calibrated relative to air with assumed dry mole fractions of 9.34e-3 for Ar.