Table 10. Comparison of the shipboard analysis of TCO2 by coulometry and the
shore-based reference analyses by manometry on duplicate samples. (The nanometric analysis
were completed by February of 1995 in the laboratory of C.D. Keeling at SIO.)
Station Date Niskin Depth TCO2(P6) TCO2(SIO) Delta TCO2
(m) (µmol/kg) (µmol/kg) (P6-SIO)
(µmol/kg)
32 5/12 5 3006.9 2300.19 2302.70 -2.51
42a 5/15 8 3002.2 2294.39 2301.94 -7.55
46 5/16 36 18.6 2022.48 2023.65 -1.17
58 5/20 36 5.4 2016.23 2018.44 -2.21
58 5/20 5 3002.1 2294.45 2294.34 +0.11
68 5/23 36 12.2 2014.30 2014.72 -0.42
68 5/23 1 2771.9 2298.66 2302.19 -3.53
85 6/04 36 20.3 2010.10(2)b 2014.15 -4.05
98a 6/08 36 19.2 2015.00(2) 2017.40 -2.40
98a 6/08 7 2998.1 2298.90 2301.49 -2.59
123 6/18 35 61.3 2025.20 2027.79 -2.59
123 6/18 12 3117.9 2305.70 2310.94 -5.24
144 6/24 35 61.3 2033.70 2036.34 -2.64
144a 6/24 12 3007.5 2313.10 2316.60 -3.50
170 7/01 15 3041.2 2288.80 2290.42 -1.60
184 7/04 23 44.5 2045.50(2) 2049.16 -3.66
188 7/05 31 3029.0 2309.80 2311.48 -1.68
231 7/22 24 20.2 2005.20 2009.57 -4.37
231 7/22 2 3135.3 2269.00 2272.61 -3.61
233 7/23 10 3001.6 2266.90 2268.49 -1.59
237 7/24 10 3004.6 2269.30 2267.89 +1.41
Mean -2.64
S. D. 1.92
n 21
aAnalyzed on System 004.
bIndicates TCO2 is the mean of 2 analyses (the SIO TCO2 values are always the mean
of 2 analyses).
tbeaty 9/30/2001