P10
- Nitrate (Gordon - OSU)
- Phosphate (Gordon - OSU)
- Silicate (Gordon - OSU)
- Oxygen (Gordon - OSU)
- TCO2 (Sabine, PU) - No adjustment recommended.
- Crossovers:
| Crossing # |
Latitude |
Longitude |
WOCE Line |
Station(s) used |
Crosses with |
Station(s) used |
Delta DIC |
Stdev DIC |
| 10 |
30° N |
148° E |
P2 |
74,77 |
P10 |
37 |
2.8 |
1.0 |
- Precision of Duplicate Measurements - The sample precision can be evaluated from the 70 sets of duplicate samples collected in shallow, mid-depth, and deep waters at every station. The average difference between duplicates was 0.16 ± 1.71 μmol/kg, suggesting that sample precision was not significantly different from the analytical precision of the CRMs.
- CRM Results - TCO2 samples were normalized to certified CRM values. The standard deviation of the 83 batch 15 CRM bottles analyzed was ± 1.91 μmol/kg.
- Keeling Samples - As a further check on the accuracy of the TCO2 analyses, duplicate samples from the surface and the 3000 m Niskins were collected from 10 stations along the cruise track and returned to SIO for analysis by vacuum extraction and manometry in C. D. Keeling's laboratory.Ten samples have been analyzed to date giving a mean difference (shore - sea) of 0.52 ± 1.78 µmol/kg, which is not statistically different from zero.
- Multiparameter Analysis (details) - Mean Difference (estimated - measured) = 0.72.8
- Alkalinity (Sabine, PU) - No adjustment recommended.
- Crossovers:
| Crossing # |
Old # |
Latitude |
Longitude |
Cruise 1 |
Cruise 1 Sta
| Cruise 2 |
Cruise 2 Sta |
TA Delta Stdev |
| 10 |
|
30° N |
148deg; E |
P10 |
74,77 |
P2 |
37 |
16.9 ± 9.7
|
- Precision of Duplicate Measurements - The mean difference for sample replicates run at sea was 0.5 ± 3.8 μmol/kg (N = 71).
- CRM Results - A mean batch 15 CRM alkalinity value of 2207.2 ± 3.9 μmol/kg (N=98) was determined for the cruise.
- Multiparameter Analysis (details) - Mean Difference (estimated - measured) = -4.5 ± 6.7
- fCO2 (Not Measured)
- pH (Not Measured)
|