P15N

• Nitrate (Whitney - IOS) - Analytical procedures are essentially those described by Koroleff and Grasshoff (1983).
• Phosphate (Whitney - IOS) - Phosphate samples were frequently contaminated during the second half of the first leg. Analytical procedures are essentially those described by Koroleff and Grasshoff (1983).
• Silicate (Whitney - IOS) - Analytical procedures are essentially those described by Koroleff and Grasshoff (1983).
• Oxygen (Whitney - IOS) - Analytical procedures are essentially those described by Koroleff and Grasshoff (1983).
• TCO₂ (Wong -IOS) - No adjustments recommended.
• Crossovers:
  

  Crossing #	Latitude	Longitude	WOCE Line	Station(s) used	Crosses with	Station(s) used	Delta DIC	Stdev DIC
  36	30° N	165° W	P15N	52,54	P2	65	-5.7	4.4
  40b	0° N	170° W	P15N	174	P14S15S	112	-1.2	0.7
  40c	0° N	170° W	P15N	112	EQS92	56	1.5	2.0
  40d	1° S	170° W	P15N	173	P14S15S	114	3.5	2.9
  40e	2° S	170° W	P15N	172	P14S15S	116	-10.6	2.0
  40f	3° S	170° W	P15N	171	P14S15S	118	-4.8	4.0
  40h	4° S	170° W	P15N	170	P14S15S	120	-3.5	0.9
  40j	5° S	170° W	P15N	169	P14S15S	122	-6.3	1.3
  40k	5° S	170° W	P15N	122	EQS92	63	-8.6	2.3
  40l	6° S	170° W	P15N	167	P14S15S	124	0	0.8
  40m	7° S	170° W	P15N	165	P14S15S	126	-2.8	0.7
  40n	8° S	170° W	P15N	163	P14S15S	128	-2.5	2.3
  40o	12° S	170° W	P15N	155	P14S15S	134,136	-1.4	1.1
  41a	10° S	170° W	P15N	157,159,161	P14S15S	130,132	-0.9	0.7
  41d	10° S	170° W	P15N	130,132	EQS92	66	-2.4	2.2
  41f	10° S	170° W	P15N	130,132	P31	54,57,61	-3.2	3.6
  MEAN							-3.1	3.6

• Precision of Duplicate Measurements - No Information.

• CRM Results - Shipboard measurements off by -0.1 ± 2.7.

• Keeling Replicates- No Information.

• Multiparameter Analysis (details) - Mean Difference (estimated - measured) = 2.3 ± 3.6

• Alkalinity (Wong -IOS) - No adjustments recommended.

• Crossovers

  Crossing #	old #	Latitude	Longitude	Cruise 1	Cruise 1 Sta	Cruise 2	Cruise 2 Sta	TA Delta Stdev
  36		30° N	165° W	P2	65	P15N	52,54	-14.8 ± 6.7
  40b	14	0° N	170° W	P14S15S	174	P15N	112	11.0 ± 3.2
  40c		0° N	170° W	EQS92	56	P15N	112	14.6 ± 4.9
  40d	42	1° S	170° W	P14S15S	173	P15N	114	6.3 ± 2.4
  40e	43	2° S	170° W	P14S15S	172	P15N	116	4.8 ± 3.5
  40f	44	3° S	170° W	P14S15S	171	P15N	118	4.5 ± 5.6
  40h	45	4° S	170° W	P14S15S	170	P15N	120	1.0 ± 3.2
  40j	11	5° S	170° W	P14S15S	169	P15N	122	4.1 ± 2.7
  40k		5° S	170° W	EQS92	63	P15N	122	-6.6 ± 1.9
  40l	46	6° S	170° W	P14S15S	167	P15N	124	2.6 ± 4.6
  40m	47	7° S	170° W	P14S15S	165	P15N	126	1.9 ± 1.4
  40n	48	8° S	170° W	P14S15S	163	P15N	128	2.2 ± 0.6
  40o	50	12° S	170° W	P14S15S	155	P15N	134,136	2.8 ± 1.0
  41a	9	10° S	170° W	P14S15S	157,159,161	P15N	130,132	2.4 ± 1.8
  41d		10° S	170° W	EQS92	66	P15N	130,132	0.7 ± 2.7
  41f	51	10° S	170° W	P31	54,57,61	P15N	130,132	3.2 ± 0.9
  AVERAGE								2.5 ± 6.5

• Precision of Duplicate Measurements - No Information.
• CRM Results - Reported data were not corrected to CRM values. Measured values were adjusted by -23.6 to agree with certified CRM values.

• Multiparameter Analysis (details) - Mean Difference (estimated - measured) = -2.4 ± 6.6

• fCO₂(Not Measured)

• pH(Not Measured)