PMEL

Table 4. Summary of the comparison results for the fugacity of CO₂ (fCO₂)
for each of the 16 crossover comparisons during the Global CO₂ Survey in the Pacific


Location number/ Crossover comparison	Nominal position		Cruise name/ WOCE line		Salinity between cruises	SD Salinity between cruises	O₂ between cruises	SD O₂ between cruises (µmol/kg)	fCO₂ between cruises (µatm)	SD fCO₂ between cruises (µatm)
Location number/ Crossover comparison	Long.	Lat.	Cruise 1	Cruise 2	Cruise 1-2	SD Salinity between cruises	Cruise 1-2	SD O₂ between cruises (µmol/kg)	fCO₂ between cruises (µatm)	SD fCO₂ between cruises (µatm)

1 / 1	170° E	66° S	*P14S^a	⁺S4	0.003	0.002	-1.0	0.2	3.8	2.6
4 / 4	170° W	67° S	*P15S^a	⁺S4	0.005	0.002	-1.6	0.2	2.8	1
7 / 8	170° W	10° S	*P15S^a	*EQS92	0.002	0.003	-3.2	1.3	30.3	8.9
8 / 13	170° W	5° S	*P15S^a	*EQS92	-0.002	0.002	2.3	5.2	17.2	25.8
9 / 16	170° W	0°	*P15S^a	*EQS92	0.002	0.001	ND^b	ND^b	13.9	12.0
11 / 18	150° W	37° S	*P16	*P16	-0.001	0.002	1.5	2.5	3.2	10.4
14 / 23	135° W	53° S	⁺P17	⁺P17	-0.001	0.004	2.3	0.7	4.7	8.8
20 / 29	126° W	67° S	⁺S4	⁺P17	0.011	0.019	-6.1	7.1	9.8^c	8.2
21 / 30	110° W	0°	*P18	*EQS92	-0.012	0.012	0.6	6.0	-28.7^c	41.5
21 / 31	110° W	0°	*P18	*EQF92	0.018	0.022	-3.2	1.6	-12.9	25.1
22 / 32	110° W	5° N	*P18	*EQS92	-0.006	0.004	-5.1^c	1.5	67.1	10.9
22 / 33	110° W	5° N	*P18	*EQF92	-0.001	0.004	3.7	6.6	34.0^c	74.1
23 / 34	103° W	67° S	*P18	⁺S4	0.002	0.002	-5.1	3.9	-8.0	5.5
26 / 37	88° W	67° S	⁺S4	⁺P19	-0.005	0.001	3.5	0.2	-13.1	1.9
28 / 39	86° W	55° S	⁺P19	⁺P19	-0.001	0.001	0.4	0.2	14.2	4.3
30 / 41	86° W	13° S	*P19	*EQF92	0.012	0.008	0.1	3.8	18.8	47.2

Mean of the absolute value of the difference Standard deviation of the absolute value of the difference									17.6 16.3

^aPreliminary data. ^bND = no data. ^cLinear regression applied. ^*Measured at 20°C. ⁺Measured at 4°C.

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