Thuróczy, Charles-Edouard; Gerringa, Loes J A; Klunder, Maarten B; Laan, Patrick; de Baar, Hein J W (2011): (Table 2) Dissolved iron concentration and ligand characteristics during POLARSTERN expedition ANT-XXIV/3 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.839214, In supplement to: Thuróczy, C-E et al. (2011): Observation of consistent trends in the organic complexation of dissolved iron in the Atlantic sector of the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 58(25-26), 2695-2706, https://doi.org/10.1016/j.dsr2.2011.01.002
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Related to:
Klunder, Maarten B; Laan, Patrick; Middag, Rob; de Baar, Hein J W; van Ooijen, Jan C (2011): Dissolved iron in the Southern Ocean (Atlantic sector). Deep Sea Research Part II: Topical Studies in Oceanography, 58(25-16), 2678-2694, https://doi.org/10.1016/j.dsr2.2010.10.042
Klunder, Maarten B; Laan, Patrick; Middag, Rob; de Baar, Hein J W; van Ooijen, Jan C (2011): Dissolved iron measured on water bottle samples during POLARSTERN cruise ANT-XXIV/3. PANGAEA, https://doi.org/10.1594/PANGAEA.780271
Coverage:
Median Latitude: -57.957890 * Median Longitude: -12.153560 * South-bound Latitude: -69.400500 * West-bound Longitude: -62.395400 * North-bound Latitude: -42.338900 * East-bound Longitude: 8.993400
Date/Time Start: 2008-02-13T17:17:00 * Date/Time End: 2008-04-08T23:55:00
Minimum DEPTH, water: 30 m * Maximum DEPTH, water: 4799 m
Event(s):
PS71/101-2 * Latitude: -42.338900 * Longitude: 8.993400 * Date/Time: 2008-02-13T17:17:00 * Elevation: -4546.0 m * Location: South Atlantic Ocean * Campaign: ANT-XXIV/3 (PS71) * Basis: Polarstern * Method/Device: CTD/Rosette, ultra clean (CTD-UC)
PS71/103-1 * Latitude: -45.999500 * Longitude: 5.881200 * Date/Time: 2008-02-16T02:38:00 * Elevation: -3330.0 m * Location: South Atlantic Ocean * Campaign: ANT-XXIV/3 (PS71) * Basis: Polarstern * Method/Device: CTD/Rosette, ultra clean (CTD-UC)
PS71/107-3 * Latitude: -50.271600 * Longitude: 1.450300 * Date/Time: 2008-02-18T20:59:00 * Elevation: -3841.0 m * Location: South Atlantic Ocean * Campaign: ANT-XXIV/3 (PS71) * Basis: Polarstern * Method/Device: CTD/Rosette, ultra clean (CTD-UC)
Comment:
The standard deviation for Fe concentrations is missing when there were not enough samples to determine the concentration in duplicate or triplicate. When the [dFe] was not determined in the same sample and therefore the concentration [dFe] was averaged from the samples above and under it; this was used for the calculation of the ligand characteristics.
At station 101 the deepest samples collected at 3505 and 4353 m had higher values of dissolved Fe, 0.630 and 0.572 nM, respectively, as compared with the duplicate subsamples reported by Klunder et al. (2011), 0.401 and 0.280 nM, respectively. The cause for this discrepancy is not known; perhaps our samples were contaminated. Nevertheless here we use our values, 0.63 and 0.572 nM in further interpretation. At station 178 Klunder et al. (2011) measured a complete vertical profile and found elevated concentrations of dissolved Fe between 300 and 800 m depth due to melted ice (1.50 nM of Fe at 451 m). The cause for the discrepancy with our sample at 451 m (0.171 nM) is not known.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Date/Time of event | Date/Time | ||||
| 3 | Latitude of event | Latitude | ||||
| 4 | Longitude of event | Longitude | ||||
| 5 | DEPTH, water | Depth water | m | Geocode | ||
| 6 | Iron, dissolved | Fe diss | nmol/l | Thuróczy, Charles-Edouard | ||
| 7 | Iron, dissolved, standard deviation | Fe diss std dev | ± | Thuróczy, Charles-Edouard | ||
| 8 | Iron-binding ligand, dissolved | FeL diss | nmol/l | Thuróczy, Charles-Edouard | Langmuir model, non-linear fit (Gerringa et al. 1995) | ligand [Lt], (nEq of M Fe) |
| 9 | Standard deviation | Std dev | ± | Thuróczy, Charles-Edouard | Langmuir model, non-linear fit (Gerringa et al. 1995) | FeL diss |
| 10 | Iron, dissolved, conditional complex stability | Fe LogK´ diss | Thuróczy, Charles-Edouard | Langmuir model, non-linear fit (Gerringa et al. 1995) | in 1/mol | |
| 11 | Standard deviation | Std dev | ± | Thuróczy, Charles-Edouard | Langmuir model, non-linear fit (Gerringa et al. 1995) | Fe LogK' diss |
| 12 | Iron-binding ligand, dissolved | FeL diss | nmol/l | Thuróczy, Charles-Edouard | Langmuir model, non-linear fit (Gerringa et al. 1995) | excess ligand [L'] = [Lt]-[dFe], (nEq of M Fe) |
| 13 | - | - | Thuróczy, Charles-Edouard | Langmuir model, non-linear fit (Gerringa et al. 1995) | log alpha; alpha = alpha organic = [L'] · K' | |
| 14 | - | - | Thuróczy, Charles-Edouard | Langmuir model, non-linear fit (Gerringa et al. 1995) | pFe = -log {[Fe]/(alpha inorganic + alpha organic)} in M | |
| 15 | Ratio | Ratio | Thuróczy, Charles-Edouard | Langmuir model, non-linear fit (Gerringa et al. 1995) | [Lt]/[dFe] |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
818 data points