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| GLODAP Results ---- |
Summary of analytical and standardization techniques
Summary of the TCO2 analytical and standardization techniques, PIs, sample volumes, CRM analyses, replicate analyses, and shorebased analyses for TCO2 during the Global CO2 Survey cruises in the Pacific.
| SIO Shorebased Replicate Analyses | |||||||||
| Cruise | TCO2 Analysis Technique | TCO2 PI |
Standardization Technique | Sample
Vol. (mL) |
CRM correction (SIO-cruise) |
Field Replicate Analyses Average Difference | Average Difference (Shore-Ship) µmol/kg | Std. Dev. of Difference µmol/kg | N |
| P8S | Coulometer | Shitashima | Liquid Stds. | 30 | 2.0±2.8 | 1.8 | NDa | ND | ND |
| P9 | Coulometer | Ishii | Liquid Stds. | 23 | 1.1±1.3 | 2.0 | ND | ND | ND |
| P10 | Coulometer/SOMMAd | Sabine | Gas Loops | 22 | ±1.9 | 1.7 | 0.6 | 1.8 | 9 |
| P13 | Coulometer/SOMMA | Dickson | bGas Loops | 30 | ±2.4 | 0.9 | -1.4 | 3.1 | 138 |
| P14N | Coulometer/SOMMA | Winn/Millero | Gas Loops | 20 | ND | ND | 0.7 | 2.3 | 27 |
| P14S15S | Coulometer/SOMMA | Feely | Gas Loops | 26 | -1.1±0.9 | 1.9 | ND | ND | ND |
| P15N | Coulometer/SOMMA | Wong | Liquid Stds. | 29 | -0.1±2.7 | ND | ND | ND | ND |
| EQS92 | Coulometer/SOMMA | Feely | Gas Loops | 26 | -0.8±1.2 | ND | ND | ND | ND |
| P16C | Coulometer/SOMMA | Goyet | bLiquid Stds. | 30 | 0a | ND | -2.1 | 2.4 | 66 |
| P16N | Coulometer | Feely | Liquid Stds. | 50 | 3.0±2.5 | 2.8 | ND | ND | ND |
| P16S17S | Coulometer | Takahashi | Gas Loops | 20 | 1.3±1.5 | 0.03% | -3.5 | 2.0 | 11 |
| P16A17A | Coulometer | Takahashi | Gas Loops | 20 | 1.0±1.7 | 0.03% | -3.4 | 1.8 | 14 |
| P17C | Coulometer/SOMMA | Goyet | Liquid Stds.b | 30 | b0 | ND | -3.4 | -4.0 | 40 |
| P17N | Coulometer/SOMMA | Goyet | Liquid Stds. | 30 | c0 | ND | -1.0 | 4.1 | 9 |
| CGC91 | Coulometer | Feely | Liquid Stds. | 50 | 3.0±2.5 | 2.8 | ND | ND | ND |
| P17E19S | Coulometer | Takahashi | Gas Loops | 20 | 1.4±2.1 | 0.03% | ND | ND | ND |
| P18 | Coulometer/SOMMA | Feely | Gas Loops | 26 | -1.3±1.4 | 2.0 | -0.4 | 2.0 | 28 |
| P19C | Coulometer | Takahashi | Gas Loops | 20 | -0.2±2.1 | 0.03% | -1.0 | 1.9 | 15 |
| P2 | Coulometer | Ono | Gas Loops | 32 | 6.8±3.1 | ND | ND | ND | ND |
| P21 | Coulometer/SOMMA | Millero | Gas Loops | 20 | 0.9±1.1 | ND | -2.3 | 1.5 | 15 |
| P31 | Coulometer/SOMMA | Winn | Gas Loops | 21 | -0.9±2.7 | 2.0 | 0.2 | 3.4 | 8 |
| P6 | Coulometer/SOMMA | Wallace | Gas Loops | 28 | -0.6±1.9 | ND | -2.6 | 1.9 | 21 |
| S4P | Coulometer | Takahashi | Gas Loops | 20 | -0.9±1.8 | 0.03% | ND | ND | ND |
| SR3S4 | Coulometer/SOMMA | Tilbrook | Gas Loops | 22 | 10.0±0.95 | 2.0 | ND | ND | ND |
aND=no data
bCRM used as a primary standard
cCRM's not available
dSOMMA=Single Operator Multi-parameter Metabolic Analyzer
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