Parameter: SIGMA_T

Dataset: 
FeOA Profile Data
Parameter: 
sigma-theta
Master parameters information
Short Name:
 sigma_0
Short Description:
 sigma-theta
Official Name:
 sigma_0
No Data Value:
 nd
Description:
 

sigma-theta (potential density), often reported in kg/m^3. Sigma-theta is denoted 'sigma_0', where the last digit, a zero, is used to represent the Greek letter theta. This altered density which takes into account adiabatic heating/cooling with changes in pressure is called the 'potential density'. (See How do we measure the density of sea water?)

Dataset-parameters information
Supplied Name: 
SIGMA_T
Supplied Units: 
kilograms per cubic meter (kg/m3)
Datatype: 
Float
Conversion Necessary: 
no
Conversion Utility: 
No Data Value: 
NDA
Description: 
Potential density anomaly associated with each sample, retrieved from CTD profiler for depth of Niskin bottle closure. 'nda' for 'no data available' used when data has not yet been obtained for this parameter.