Parameter: Depth_water_m

Dataset: 
HPLC pigment data collected during the Tara Pacific expedition
Parameter: 
depth
Master parameters information
Short Name:
 depth
Short Description:
 depth
Official Name:
 depth
No Data Value:
 nd
Description:
 

Observation/sample depth below the sea surface. Units often reported as: meters, feet.

When used in a JGOFS/GLOBEC dataset the depth is a best estimate; usually but not always calculated from pressure; calculated either from CTD pressure using Fofonoff and Millard (1982; UNESCO Tech Paper #44) algorithm adjusted for 1980 equation of state for seawater (EOS80) or simply equivalent to nominal depth as recorded during sampling if CTD pressure was unavailable.

Dataset-parameters information
Supplied Name: 
Depth_water_m
Supplied Units: 
meters (m)
Datatype: 
Float
Conversion Necessary: 
no
No Data Value: 
nd
Description: 

The mid-depth at which the water was sampled. (Note: the min and max depth associated with the samples take into account the potential variability in sampling depth, but Depth_water_m would be considered the sampling depth.)