/* DATA DESCRIPTION: Citation: Croot, Peter L; Bowie, Andrew R; Frew, Russell; Maldonado, Maria T; Hall, Julie A; Safi, Karl A; La Roche, Julie; Boyd, Philip W; Law, Cliff S (2014): Dissolved iron and Fe(II) in an iron induced Southern Ocean phytoplankton bloom measured during TANGAROA cruise SOIREE. PANGAEA, https://doi.org/10.1594/PANGAEA.832530, Supplement to: Croot, PL et al. (2001): Retention of dissolved iron and Fe II in an iron induced Southern Ocean phytoplankton bloom. Geophysical Research Letters, 28(18), 3425-3428, https://doi.org/10.1029/2001GL013023 Abstract: During the 13 day Southern Ocean Iron RE-lease Experiment (SOIREE), dissolved iron concentrations decreased rapidly following each of three iron-enrichments, but remained high (>1 nM, up to 80% as FeII) after the fourth and final enrichment on day 8. The former trend was mainly due to dilution (spreading of iron-fertilized waters) and particle scavenging. The latter may only be explained by a joint production-maintenance mechanism; photoreduction is the only candidate process able to produce sufficiently high FeII, but as such levels persisted overnight (8 hr dark period) -ten times the half-life for this species- a maintenance mechanism (complexation of FeII) is required, and is supported by evidence of increased ligand concentrations on day 12. The source of these ligands and their affinity for FeII is not known. This retention of iron probably permitted the longevity of this bloom raising fundamental questions about iron cycling in HNLC (High Nitrate Low Chlorophyll) Polar waters. Coverage: MEDIAN LATITUDE: -60.984458 * MEDIAN LONGITUDE: 140.018708 * SOUTH-BOUND LATITUDE: -61.123300 * WEST-BOUND LONGITUDE: 139.230000 * NORTH-BOUND LATITUDE: -60.900700 * EAST-BOUND LONGITUDE: 140.645700 DATE/TIME START: 1999-02-09T13:13:00 * DATE/TIME END: 1999-02-22T08:21:00 MINIMUM DEPTH, water: 40 m * MAXIMUM DEPTH, water: 40 m Event(s): T1136-1 * LATITUDE: -60.978500 * LONGITUDE: 139.230000 * DATE/TIME: 1999-02-09T13:13:00 * LOCATION: Southern Ocean - Australasian-Pacific Sector * CAMPAIGN: SOIREE (URI: https://doi.org/10.1016/S0967-0645(01)00002-9) * BASIS: Tangaroa (URI: https://en.wikipedia.org/wiki/RV_Tangaroa) * METHOD/DEVICE: Go-Flo bottles (GOFLO) * COMMENT: OUT-patch of the iron-fertilized area T1139-1 * LATITUDE: -60.987000 * LONGITUDE: 139.463300 * DATE/TIME: 1999-02-10T17:48:00 * LOCATION: Southern Ocean - Australasian-Pacific Sector * CAMPAIGN: SOIREE (URI: https://doi.org/10.1016/S0967-0645(01)00002-9) * BASIS: Tangaroa (URI: https://en.wikipedia.org/wiki/RV_Tangaroa) * METHOD/DEVICE: Go-Flo bottles (GOFLO) * COMMENT: IN-patch of the iron-fertilized area T1140-6 * LATITUDE: -60.945800 * LONGITUDE: 139.728200 * DATE/TIME: 1999-02-12T07:32:00 * LOCATION: Southern Ocean - Australasian-Pacific Sector * CAMPAIGN: SOIREE (URI: https://doi.org/10.1016/S0967-0645(01)00002-9) * BASIS: Tangaroa (URI: https://en.wikipedia.org/wiki/RV_Tangaroa) * METHOD/DEVICE: Go-Flo bottles (GOFLO) * COMMENT: IN-patch of the iron-fertilized area T1141-6 * LATITUDE: -60.966700 * LONGITUDE: 139.459500 * DATE/TIME: 1999-02-12T17:04:00 * LOCATION: Southern Ocean - Australasian-Pacific Sector * CAMPAIGN: SOIREE (URI: https://doi.org/10.1016/S0967-0645(01)00002-9) * BASIS: Tangaroa (URI: https://en.wikipedia.org/wiki/RV_Tangaroa) * METHOD/DEVICE: Go-Flo bottles (GOFLO) T1144-6 * LATITUDE: -60.932700 * LONGITUDE: 139.928800 * DATE/TIME: 1999-02-14T09:38:00 * LOCATION: Southern Ocean - Australasian-Pacific Sector * CAMPAIGN: SOIREE (URI: https://doi.org/10.1016/S0967-0645(01)00002-9) * BASIS: Tangaroa (URI: https://en.wikipedia.org/wiki/RV_Tangaroa) * METHOD/DEVICE: Go-Flo bottles (GOFLO) * COMMENT: IN-patch of the iron-fertilized area T1151-5 * LATITUDE: -60.900700 * LONGITUDE: 140.086300 * DATE/TIME: 1999-02-16T09:08:00 * LOCATION: Southern Ocean - Australasian-Pacific Sector * CAMPAIGN: SOIREE (URI: https://doi.org/10.1016/S0967-0645(01)00002-9) * BASIS: Tangaroa (URI: https://en.wikipedia.org/wiki/RV_Tangaroa) * METHOD/DEVICE: Go-Flo bottles (GOFLO) * COMMENT: IN-patch of the iron-fertilized area T1152-5 * LATITUDE: -61.123300 * LONGITUDE: 140.137500 * DATE/TIME: 1999-02-16T17:56:00 * LOCATION: Southern Ocean - Australasian-Pacific Sector * CAMPAIGN: SOIREE (URI: https://doi.org/10.1016/S0967-0645(01)00002-9) * BASIS: Tangaroa (URI: https://en.wikipedia.org/wiki/RV_Tangaroa) * METHOD/DEVICE: Go-Flo bottles (GOFLO) * COMMENT: OUT-patch of the iron-fertilized area T1158-5 * LATITUDE: -60.925000 * LONGITUDE: 140.236700 * DATE/TIME: 1999-02-18T15:17:00 * LOCATION: Southern Ocean - Australasian-Pacific Sector * CAMPAIGN: SOIREE (URI: https://doi.org/10.1016/S0967-0645(01)00002-9) * BASIS: Tangaroa (URI: https://en.wikipedia.org/wiki/RV_Tangaroa) * METHOD/DEVICE: Go-Flo bottles (GOFLO) * COMMENT: IN-patch of the iron-fertilized area T1159-6 * LATITUDE: -60.965200 * LONGITUDE: 140.275800 * DATE/TIME: 1999-02-19T12:25:00 * LOCATION: Southern Ocean - Australasian-Pacific Sector * CAMPAIGN: SOIREE (URI: https://doi.org/10.1016/S0967-0645(01)00002-9) * BASIS: Tangaroa (URI: https://en.wikipedia.org/wiki/RV_Tangaroa) * METHOD/DEVICE: Go-Flo bottles (GOFLO) * COMMENT: IN-patch of the iron-fertilized area T1160-3 * LATITUDE: -60.970300 * LONGITUDE: 140.630000 * DATE/TIME: 1999-02-19T20:16:00 * LOCATION: Southern Ocean - Australasian-Pacific Sector * CAMPAIGN: SOIREE (URI: https://doi.org/10.1016/S0967-0645(01)00002-9) * BASIS: Tangaroa (URI: https://en.wikipedia.org/wiki/RV_Tangaroa) * METHOD/DEVICE: Go-Flo bottles (GOFLO) * COMMENT: OUT-patch of the iron-fertilized area T1162-4 * LATITUDE: -61.017000 * LONGITUDE: 140.402700 * DATE/TIME: 1999-02-20T13:35:00 * LOCATION: Southern Ocean - Australasian-Pacific Sector * CAMPAIGN: SOIREE (URI: https://doi.org/10.1016/S0967-0645(01)00002-9) * BASIS: Tangaroa (URI: https://en.wikipedia.org/wiki/RV_Tangaroa) * METHOD/DEVICE: Go-Flo bottles (GOFLO) * COMMENT: IN-patch of the iron-fertilized area T1171-5 * LATITUDE: -61.101300 * LONGITUDE: 140.645700 * DATE/TIME: 1999-02-22T08:21:00 * LOCATION: Southern Ocean - Australasian-Pacific Sector * CAMPAIGN: SOIREE (URI: https://doi.org/10.1016/S0967-0645(01)00002-9) * BASIS: Tangaroa (URI: https://en.wikipedia.org/wiki/RV_Tangaroa) * METHOD/DEVICE: Go-Flo bottles (GOFLO) * COMMENT: IN-patch of the iron-fertilized area Parameter(s): Event label (Event) Comment (Comment) * COMMENT: In/Out patch Date/Time of event (Date/Time) Latitude of event (Latitude) Longitude of event (Longitude) DEPTH, water [m] (Depth water) * GEOCODE Iron-binding ligand, dissolved [nmol/l] (FeL diss) * PI: Croot, Peter L (https://orcid.org/0000-0003-1396-0601, peter.croot@nuigalway.ie) Error (Error) * PI: Croot, Peter L (https://orcid.org/0000-0003-1396-0601, peter.croot@nuigalway.ie) * METHOD/DEVICE: Voltammetry (URI: https://en.wikipedia.org/wiki/Voltammetry) * COMMENT: Iron-binding ligand Iron, dissolved, conditional complex stability (Fe LogK´ diss) * PI: Croot, Peter L (https://orcid.org/0000-0003-1396-0601, peter.croot@nuigalway.ie) * METHOD/DEVICE: Voltammetry (URI: https://en.wikipedia.org/wiki/Voltammetry) * COMMENT: K is relative to Fe' where aFe' is 10**10 Error (Error) * PI: Croot, Peter L (https://orcid.org/0000-0003-1396-0601, peter.croot@nuigalway.ie) * METHOD/DEVICE: Voltammetry (URI: https://en.wikipedia.org/wiki/Voltammetry) * COMMENT: Log K Iron, dissolved [nmol/l] (Fe diss) * PI: Croot, Peter L (https://orcid.org/0000-0003-1396-0601, peter.croot@nuigalway.ie) * METHOD/DEVICE: Voltammetry (URI: https://en.wikipedia.org/wiki/Voltammetry) License: Creative Commons Attribution 3.0 Unported (CC-BY-3.0) (URI: https://creativecommons.org/licenses/by/3.0/) Size: 64 data points */ Event Comment (In/Out patch) Date/Time Latitude Longitude Depth water [m] FeL diss [nmol/l] Error (Iron-binding ligand) Fe LogK´ diss (K is relative to Fe' where aF...) Error (Log K) Fe diss [nmol/l] T1136-1 Out 1999-02-09T13:13 -60.9785 139.2300 40 0.250 T1139-1 In 1999-02-10T17:48 -60.9870 139.4633 40 3.520 T1140-6 In 1999-02-12T07:32 -60.9458 139.7282 40 3.49 0.07 12.28 0.78 3.260 T1141-6 Out 1999-02-12T17:04 -60.9667 139.4595 40 3.61 0.49 12.08 1.96 0.080 T1144-6 In 1999-02-14T09:38 -60.9327 139.9288 40 4.71 0.75 10.94 0.48 0.683 T1151-5 In 1999-02-16T09:08 -60.9007 140.0863 40 4.16 0.82 10.62 0.68 4.880 T1152-5 Out 1999-02-16T17:56 -61.1233 140.1375 40 2.71 0.40 11.23 0.92 0.630 T1158-5 In 1999-02-18T15:17 -60.9250 140.2367 40 4.27 0.12 11.12 0.13 2.350 T1159-6 In 1999-02-19T12:25 -60.9652 140.2758 40 2.41 0.62 11.07 1.08 1.340 T1160-3 Out 1999-02-19T20:16 -60.9703 140.6300 40 1.04 0.03 12.98 0.92 0.480 T1162-4 In 1999-02-20T13:35 -61.0170 140.4027 40 4.45 0.38 11.53 0.73 1.135 T1171-5 In 1999-02-22T08:21 -61.1013 140.6457 40 9.20 2.82 11.19 1.13 1.340