P16A17A

• Nitrate (Gordon - OSU)
• Phosphate (Gordon - OSU)
• Silicate (Gordon - OSU)
• Oxygen (Gordon - OSU)
• TCO₂ (Takahashi - LDEO) - No adjustments recommended.
• Crossovers:
  

  Crossing #	Latitude	Longitude	WOCE Line	Station(s) used	Crosses with	Station(s) used	Delta DIC	Stdev DIC
  55	37° S	150° W	P16A17A	180	P16S17S	3	-0.1	2.4
  66b	33° S	135° W	P16A17A	179	P16S17S	119	-2.8	2.2
  66c	33° S	135° W	P16A17A	119	P6	108	-2.3	0.7
  67	53° S	135° W	P16A17A	77	P17E19S	128	-4.4	2.9
  MEAN							-2.4	1.8

• Precision of Duplicate Measurements - Repeated measurements yielded a precision of ± 0.03%.
• CRM Results - 166 analyses (batch 12 & 13) with average of 1983.0 ± 1.5 µmol/kg. Compare to SIO manometric value of 1984.0 ± 0.7 µmol/kg (n=7) Mean difference (LDEO-SIO) estimated to be -1.0 ± 1.7 µmol/kg.
• Keeling Replicates - Mean difference for 14 samples was -3.43 ± 1.82.
• Alkalinity (Not Measured)
• fCO₂ (Takahashi - LDEO) - No adjustments recommended.
• Crossovers:
  

  Crossover	Longitude	Latitude	Cruise-1	Stations-1	Cruise-2	Stations-2	Δ Salinity	Δ O2	ΔfCO2	Feely et al. #
  55	150° W	37° S	P16S17S	180	P16A17A	3	-0.001 ± 0.002	1.5 ± 2.5	3.2 ± 10.4	18
  67	135° W	53° S	P16A17A	77	P17E19S	128	-0.001 ± 0.004	2.3 ± 0.7	4.7 ± 8.8	23

  From Feely et al., 1999, ORNL/CDIAC-115 (Δ = Cruise 1 - Cruise 2)
• Precision of Duplicate Measurements - Repeated measurements yielded a precision of 0.12%.
• CRM Results - No Information.
• pH(Not Measured)